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<meta name="keywords" content="C3714756, development disorder, intellectual, development disorders, intellectual, disabilities, intellectual, disability, intellectual, disorder, intellectual development, disorders, intellectual development, dull intelligence, intellectual development disorder, intellectual development disorders, intellectual developmental disorder, intellectual disabilities, intellectual disability, intellectual functioning disability, intellectual limitation, low intelligence, mental deficiency, mental or behavioral dysfunction, mental retardation, mental retardation, nonspecific, mental-retardation, non rare in europe: unexplained intellectual disability, nonprogressive intellectual disability, nonprogressive mental retardation, poor school performance, retardation, mental, autosomal dominant, autosomal recessive, birth defects, chromosomal disease, chromosome, clinical features, clinical findings, clinical genetics, clinical recommendations, clinvar, congenital chromosomal disease, consumer genetic resources, cytogenetic location, disease characteristics, disease definitions, disease descriptions, disease ontology, disease synonyms, disease vocabulary, dysmorphology, entrez, familial disease, gene, gene-disease relationship, genereviews, genetic disease, genetic disorder, genetic terminology, genetic testing registry, genetics home reference, genomic disease, gtr, hereditary disease, heritable disease, hpo, human phenotype ontology, inherited disease, management guidelines, maternal inheritance, medgen, medical genetics, medical subject headings, mesh, mitochondrial inheritance, mode of inheritance, national center for biotechnology information, national institutes of health, national library of medicine, ncbi, nih, nlm, omim, ordo, orphanet, paternal inheritance, phenome, position statements, professional practice guidelines, rare disease, reference sequence, refseq, snomed ct, syndrome, undiagnosed diseases, x-linked recessive" /><meta name="description" content="Intellectual disability, previously referred to as mental retardation, is characterized by subnormal intellectual functioning that occurs during the developmental period. It is defined by an IQ score below 70." /><meta name="robots" content="index,nofollow,noarchive" />
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<!--
UID=811461
ConceptID=C3714756
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Intellectual disability</div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>811461</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3714756</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonyms:</td>
<td>Intellectual developmental disorder; intellectual disabilities; Intellectual functioning disability</td></tr>
<tr><td><span class="bold">SNOMED CT: </span></td>
<td>Intellectual limitation (228156007); Intellectual disability (110359009); Intellectual functioning disability (228156007); Intellectual developmental disorder (110359009)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>HPO:</td>
<td><a target="_blank" title="Human Phenotype Ontology" href="https://hpo.jax.org/app/browse/term/HP:0001249">HP:0001249</a></td></tr>
<tr><td>Monarch Initiative:</td>
<td><a href="https://monarchinitiative.org/disease/MONDO:0001071" target="_blank">MONDO:0001071</a></td></tr>
<tr><td>Orphanet:</td>
<td><a target="_blank" title="Orphanet: The portal for rare diseases and orphan drugs" href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&amp;Expert=319658">ORPHA319658</a></td></tr></tbody></table></div><div class="rprt-body jig-ncbiinpagenav" data-jigconfig="smoothScroll: false, gotoTopLink: true, gotoTopLinkText: '', gotoTopLinkAttrs: {'title': 'Go to the top of the page'},allHeadingLevels: ['h1'], topOfPageTOC: true, tocId: 'my-toc'"><div id="rprt-tabs-1" class="rprt-tab"><div id="tb-termsProp-1"><div class="leftCol mgCol"><div>
<div class="portlet mgSection" id="ID_100">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Definition">Definition</h1><a sid="100" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">Intellectual disability, previously referred to as mental retardation, is characterized by subnormal intellectual functioning that occurs during the developmental period. It is defined by an IQ score below 70. [from <a title="Human Phenotype Ontology" href="http://www.human-phenotype-ontology.org" class="defSource" target="_blank">HPO</a>]</div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Term_Hierarchy">Term Hierarchy</h1><a sid="118" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln HierarchyGTR"><div class="jig-ncbitabs"><ul><li><a href="#tabGTR">GTR</a></li><li><a href="#tabMGEN">MeSH</a></li></ul><div id="tabGTR"><div class="search_result"><div class="rprts"><div class="chiclet_legend"><span class="chiclet_list" style="position:static;"><span title="Clinical test" class="chiclet Ccolor round">C</span><span>Clinical test,  </span><span title="Research test" class="chiclet Rcolor round">R</span><span>Research test,  </span><span title="OMIM" class="chiclet Ocolor ">O</span><span>OMIM,  </span><span title="GeneReview" class="chiclet Gcolor">G</span><span><em>GeneReviews</em>,  </span><span title="ClinVar" class="chiclet Vcolor">V</span><span>ClinVar  </span></span></div><div id="hierarchy" class="margin_t1"><div class="ds_tree"><ul><li class="matched_ds"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C3714756[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=811461">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=811461" ref="ncbi_uid=811461">V</a></span></span><span class="TLline">Intellectual disability</span></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/21047" ref="tree=MeSH" title="MedGen record for Pathological Conditions, Signs and Symptoms">Pathological Conditions, Signs and Symptoms</a></span><ul><li><span class="TLline"><a href="/medgen/18325" ref="tree=MeSH" title="MedGen record for Pathological process">Pathological process</a></span><ul><li><span class="TLline"><a href="/medgen/4347" ref="tree=MeSH" title="MedGen record for Disease">Disease</a></span><ul><li><span class="TLline"><a href="/medgen/520" ref="tree=MeSH" title="MedGen record for Behavior disorder">Behavior disorder</a></span><ul><li><span class="matched_ds">Intellectual disability</span><ul><li><span class="TLline"><a href="/medgen/64512" ref="tree=MeSH" title="MedGen record for 11p partial monosomy syndrome">11p partial monosomy syndrome</a></span></li><li><span class="TLline"><a href="/medgen/41345" ref="tree=MeSH" title="MedGen record for 5p partial monosomy syndrome">5p partial monosomy syndrome</a></span></li><li><span class="TLline"><a href="/medgen/78752" ref="tree=MeSH" title="MedGen record for De Lange syndrome">De Lange syndrome</a></span><ul><li><span class="TLline"><a href="/medgen/315658" ref="tree=MeSH" title="MedGen record for Congenital muscular hypertrophy-cerebral syndrome">Congenital muscular hypertrophy-cerebral syndrome</a></span></li><li><span class="TLline"><a href="/medgen/1645760" ref="tree=MeSH" title="MedGen record for Cornelia de Lange syndrome 1">Cornelia de Lange syndrome 1</a></span></li><li><span class="TLline"><a href="/medgen/339902" ref="tree=MeSH" title="MedGen record for Cornelia de Lange syndrome 3">Cornelia de Lange syndrome 3</a></span></li><li><span class="TLline"><a href="/medgen/766431" ref="tree=MeSH" title="MedGen record for Cornelia de Lange syndrome 4">Cornelia de Lange syndrome 4</a></span></li><li><span class="TLline"><a href="/medgen/763817" ref="tree=MeSH" title="MedGen record for Cornelia de Lange syndrome 5">Cornelia de Lange syndrome 5</a></span></li></ul></li><li><span class="TLline"><a href="/medgen/4385" ref="tree=MeSH" title="MedGen record for Down syndrome">Down syndrome</a></span><ul><li><span class="TLline"><a href="/medgen/693553" ref="tree=MeSH" title="MedGen record for Translocation Down syndrome">Translocation Down syndrome</a></span><ul><li><span class="TLline"><a href="/medgen/989330" ref="tree=MeSH" title="MedGen record for Mosaic translocation Down syndrome">Mosaic translocation Down syndrome</a></span></li><li><span class="TLline"><a href="/medgen/994147" ref="tree=MeSH" title="MedGen record for Reciprocal translocation down syndrome">Reciprocal translocation down syndrome</a></span></li><li><span class="TLline"><a href="/medgen/1816520" ref="tree=MeSH" title="MedGen record for Robertsonian translocation Down syndrome">Robertsonian translocation Down syndrome</a></span></li></ul></li><li><span class="TLline"><a href="/medgen/760825" ref="tree=MeSH" title="MedGen record for Trisomy 21">Trisomy 21</a></span><ul><li><span class="TLline"><a href="/medgen/1624021" ref="tree=MeSH" title="MedGen record for Complete trisomy 21">Complete trisomy 21</a></span></li><li><span class="TLline"><a href="/medgen/419386" ref="tree=MeSH" title="MedGen record for Mosaic trisomy 21">Mosaic trisomy 21</a></span></li></ul></li></ul></li><li><span class="TLline"><a href="/medgen/507499" ref="tree=MeSH" title="MedGen record for Intellectual disability, borderline">Intellectual disability, borderline</a></span></li><li><span class="TLline"><a href="/medgen/10044" ref="tree=MeSH" title="MedGen record for Intellectual disability, mild">Intellectual disability, mild</a></span></li><li><span class="TLline"><a href="/medgen/7680" ref="tree=MeSH" title="MedGen record for Intellectual disability, moderate">Intellectual disability, moderate</a></span></li><li><span class="TLline"><a href="/medgen/892508" ref="tree=MeSH" title="MedGen record for Intellectual disability, profound">Intellectual disability, profound</a></span></li><li><span class="TLline"><a href="/medgen/337397" ref="tree=MeSH" title="MedGen record for Intellectual disability, progressive">Intellectual disability, progressive</a></span></li><li><span class="TLline"><a href="/medgen/48638" ref="tree=MeSH" title="MedGen record for Intellectual disability, severe">Intellectual disability, severe</a></span></li><li><span class="TLline"><a href="/medgen/46057" ref="tree=MeSH" title="MedGen record for Prader-Willi 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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Conditions_with_this_feature">Conditions with this feature</h1><a sid="112" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
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<div class="divPopper rprt" id="rdis_7858"><div><strong>Acrocephalosyndactyly type I</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>7858</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0001193</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Apert syndrome is characterized by the presence of multisuture craniosynostosis, midface retrusion, and syndactyly of the hands with fusion of the second through fourth nails. Almost all affected individuals have coronal craniosynostosis, and a majority also have involvement of the sagittal and lambdoid sutures. The midface in Apert syndrome is underdeveloped as well as retruded; a subset of affected individuals have cleft palate. The hand in Apert syndrome always includes fusion of the middle three digits; the thumb and fifth finger are sometimes also involved. Feeding issues, dental abnormalities, hearing loss, hyperhidrosis, and progressive synostosis of multiple bones (skull, hands, feet, carpus, tarsus, and cervical vertebrae) are also common. Multilevel airway obstruction may be present and can be due to narrowing of the nasal passages, tongue-based airway obstruction, and/or tracheal anomalies. Nonprogressive ventriculomegaly is present in a majority of individuals, with a small subset having true hydrocephalus. Most individuals with Apert syndrome have normal intelligence or mild intellectual disability; moderate-to-severe intellectual disability has been reported in some individuals. A minority of affected individuals have structural cardiac abnormalities, true gastrointestinal malformations, and anomalies of the genitourinary tract.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/7858">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_13966"><div><strong>Autism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>13966</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0004352</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autism, the prototypic pervasive developmental disorder (PDD), is usually apparent by 3 years of age. It is characterized by a triad of limited or absent verbal communication, a lack of reciprocal social interaction or responsiveness, and restricted, stereotypic, and ritualized patterns of interests and behavior (Bailey et al., 1996; Risch et al., 1999). 'Autism spectrum disorder,' sometimes referred to as ASD, is a broader phenotype encompassing the less severe disorders Asperger syndrome (see ASPG1; 608638) and pervasive developmental disorder, not otherwise specified (PDD-NOS). 'Broad autism phenotype' includes individuals with some symptoms of autism, but who do not meet the full criteria for autism or other disorders. Mental retardation coexists in approximately two-thirds of individuals with ASD, except for Asperger syndrome, in which mental retardation is conspicuously absent (Jones et al., 2008). Genetic studies in autism often include family members with these less stringent diagnoses (Schellenberg et al., 2006).&#13; Levy et al. (2009) provided a general review of autism and autism spectrum disorder, including epidemiology, characteristics of the disorder, diagnosis, neurobiologic hypotheses for the etiology, genetics, and treatment options.&#13; Genetic Heterogeneity of Autism&#13; Autism is considered to be a complex multifactorial disorder involving many genes. Accordingly, several loci have been identified, some or all of which may contribute to the phenotype. Included in this entry is AUTS1, which has been mapped to chromosome 7q22.&#13; Other susceptibility loci include AUTS3 (608049), which maps to chromosome 13q14; AUTS4 (608636), which maps to chromosome 15q11; AUTS6 (609378), which maps to chromosome 17q11; AUTS7 (610676), which maps to chromosome 17q21; AUTS8 (607373), which maps to chromosome 3q25-q27; AUTS9 (611015), which maps to chromosome 7q31; AUTS10 (611016), which maps to chromosome 7q36; AUTS11 (610836), which maps to chromosome 1q41; AUTS12 (610838), which maps to chromosome 21p13-q11; AUTS13 (610908), which maps to chromosome 12q14; AUTS14A (611913), which has been found in patients with a deletion of a region of 16p11.2; AUTS14B (614671), which has been found in patients with a duplication of a region of 16p11.2; AUTS15 (612100), associated with mutation in the CNTNAP2 gene (604569) on chromosome 7q35-q36; AUTS16 (613410), associated with mutation in the SLC9A9 gene (608396) on chromosome 3q24; AUTS17 (613436), associated with mutation in the SHANK2 gene (603290) on chromosome 11q13; AUTS18 (615032), associated with mutation in the CHD8 gene (610528) on chromosome 14q11; AUTS19 (615091), associated with mutation in the EIF4E gene (133440) on chromosome 4q23; and AUTS20 (618830), associated with mutation in the NLGN1 gene (600568) on chromosome 3q26. (NOTE: the symbol 'AUTS2' has been used to refer to a gene on chromosome 7q11 (KIAA0442; 607270) and therefore is not used as a part of this autism locus series.)&#13; There are several X-linked forms of autism susceptibility: AUTSX1 (300425), associated with mutations in the NLGN3 gene (300336); AUTSX2 (300495), associated with mutations in NLGN4 (300427); AUTSX3 (300496), associated with mutations in MECP2 (300005); AUTSX4 (300830), associated with variation in the region on chromosome Xp22.11 containing the PTCHD1 gene (300828); AUTSX5 (300847), associated with mutations in the RPL10 gene (312173); and AUTSX6 (300872), associated with mutation in the TMLHE gene (300777).&#13; A locus on chromosome 2q (606053) associated with a phenotype including intellectual disability and speech deficits was formerly designated AUTS5.&#13; Folstein and Rosen-Sheidley (2001) reviewed the genetics of autism.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/13966">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_2554"><div><strong>Gorlin syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>2554</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0004779</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Neoplastic Process</dd></dl></div></div></div>
<div class="spaceAbove">Nevoid basal cell carcinoma syndrome (NBCCS) is characterized by the development of multiple jaw keratocysts, frequently beginning in the second decade of life, and/or basal cell carcinomas (BCCs), usually from the third decade onward. Many individuals have a recognizable appearance with macrocephaly, frontal bossing, coarse facial features, and facial milia. Most individuals have skeletal anomalies (e.g., bifid ribs, wedge-shaped vertebrae). Ectopic calcification, particularly in the falx, is present in 90% of affected individuals by age 30 years. Cardiac and ovarian fibromas occur in approximately 2% and 20% of individuals, respectively. Approximately 5% of all children with NBCCS develop medulloblastoma (primitive neuroectodermal tumor), generally the desmoplastic subtype. The risk of developing medulloblastoma is substantially higher in individuals with an SUFU pathogenic variant (33%) than in those with a PTCH1 pathogenic variant (&lt;2%). Peak incidence is at age one to two years. Life expectancy in NBCCS is not significantly different from average.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/2554">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_3347"><div><strong>Chédiak-Higashi syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>3347</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0007965</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Chediak-Higashi syndrome (CHS) is characterized by partial oculocutaneous albinism (OCA), immunodeficiency, a mild bleeding tendency, and late adolescent- to adult-onset neurologic manifestations (e.g., learning difficulties, peripheral neuropathy, ataxia, and parkinsonism). While present in nearly all individuals with CHS, these clinical findings vary in severity. Of note, all individuals with CHS are at risk of developing neurologic manifestations and hemophagocytic lymphohistiocytosis (HLH). Individuals with severe childhood-onset presentations are considered to have "classic" CHS, whereas individuals with milder adolescent- to adult-onset presentations are considered to have "atypical" CHS. Because of the considerable overlap between classic CHS and atypical CHS, the disorder is best understood as a continuum of severe to milder phenotypes, with the universal feature being the pathognomonic giant granules within leukocytes observed on peripheral blood smear.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/3347">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1162"><div><strong>Crouzon syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1162</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0010273</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Crouzon syndrome is an autosomal dominant disorder characterized by craniosynostosis causing secondary alterations of the facial bones and facial structure. Common features include hypertelorism, exophthalmos and external strabismus, parrot-beaked nose, short upper lip, hypoplastic maxilla, and a relative mandibular prognathism (Reardon et al., 1994; Glaser et al., 2000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1162">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_41345"><div><strong>5p partial monosomy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>41345</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0010314</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cri-du-chat syndrome was first described by Lejeune et al. (1963) as a hereditary congenital syndrome associated with deletion of part of the short arm of chromosome 5. The deletions can vary in size from extremely small and involving only band 5p15.2 to the entire short arm. Although the majority of deletions arise as new mutations, approximately 12% result from unbalanced segregation of translocations or recombination involving a pericentric inversion in one of the parents.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/41345">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_4297"><div><strong>DiGeorge syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>4297</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0012236</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Individuals with 22q11.2 deletion syndrome (22q11.2DS) can present with a wide range of features that are highly variable, even within families. The major clinical manifestations of 22q11.2DS include congenital heart disease, particularly conotruncal malformations (ventricular septal defect, tetralogy of Fallot, interrupted aortic arch, and truncus arteriosus), palatal abnormalities (velopharyngeal incompetence, submucosal cleft palate, bifid uvula, and cleft palate), immune deficiency, characteristic facial features, and learning difficulties. Hearing loss can be sensorineural and/or conductive. Laryngotracheoesophageal, gastrointestinal, ophthalmologic, central nervous system, skeletal, and genitourinary anomalies also occur. Psychiatric illness and autoimmune disorders are more common in individuals with 22q11.2DS.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/4297">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_4385"><div><strong>Down syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>4385</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0013080</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Down syndrome is a chromosomal condition that is associated with intellectual disability, a characteristic facial appearance, and weak muscle tone (hypotonia) in infancy. All affected individuals experience cognitive delays, but the intellectual disability is usually mild to moderate.\n\nPeople with Down syndrome often have a characteristic facial appearance that includes a flattened appearance to the face, outside corners of the eyes that point upward (upslanting palpebral fissures), small ears, a short neck, and a tongue that tends to stick out of the mouth. Affected individuals may have a variety of birth defects. Many people with Down syndrome have small hands and feet and a single crease across the palms of the hands. About half of all affected children are born with a heart defect. Digestive abnormalities, such as a blockage of the intestine, are less common.\n\nIndividuals with Down syndrome have an increased risk of developing several medical conditions. These include gastroesophageal reflux, which is a backflow of acidic stomach contents into the esophagus, and celiac disease, which is an intolerance of a wheat protein called gluten. About 15 percent of people with Down syndrome have an underactive thyroid gland (hypothyroidism). The thyroid gland is a butterfly-shaped organ in the lower neck that produces hormones. Individuals with Down syndrome also have an increased risk of hearing and vision problems. Additionally, a small percentage of children with Down syndrome develop cancer of blood-forming cells (leukemia).\n\nDelayed development and behavioral problems are often reported in children with Down syndrome. Affected individuals can have growth problems and their speech and language develop later and more slowly than in children without Down syndrome. Additionally, speech may be difficult to understand in individuals with Down syndrome. Behavioral issues can include attention problems, obsessive/compulsive behavior, and stubbornness or tantrums. A small percentage of people with Down syndrome are also diagnosed with developmental conditions called autism spectrum disorders, which affect communication and social interaction.\n\nPeople with Down syndrome often experience a gradual decline in thinking ability (cognition) as they age, usually starting around age 50. Down syndrome is also associated with an increased risk of developing Alzheimer's disease, a brain disorder that results in a gradual loss of memory, judgment, and ability to function. Approximately half of adults with Down syndrome develop Alzheimer's disease. Although Alzheimer's disease is usually a disorder that occurs in older adults, people with Down syndrome commonly develop this condition earlier, in their fifties or sixties.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/4385">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_8584"><div><strong>Ellis-van Creveld syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>8584</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0013903</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ellis-van Creveld (EVC) syndrome is characterized by postaxial polydactyly of the hands, disproportionate short stature with short limbs, dystrophic and/or hypoplastic nails, dental and oral manifestations, congenital heart disease, and radiologic abnormalities (narrow chest, short ribs, short tubular bones, bulbous ends of the proximal ulnae and distal radii, carpal and metacarpal fusions, cone-shaped epiphyses of phalanges, small iliac crests, acetabular spur projections [trident ilia], and lateral slanting of the tibial plateau). Other less common and more variable features include postaxial polydactyly of the feet, upper lip defect, and developmental delay.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/8584">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_42055"><div><strong>Focal dermal hypoplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>42055</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0016395</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PORCN-related developmental disorders include a spectrum of highly variable multisystem disorders caused by developmental abnormalities in mesodermal and ectodermal structures primarily involving the skin, limbs, eyes, and face. The manifestations vary among affected individuals, and many have only a subset of the characteristic features. Skin manifestations present at birth include atrophic and hypoplastic areas of skin; cutis aplasia; fat nodules in the dermis manifesting as soft, yellow-pink cutaneous nodules; and pigmentary changes. Verrucous papillomas of the skin and mucous membranes may appear later. The nails can be ridged, dysplastic, or hypoplastic; hair can be sparse or absent. Limb malformations include oligo- and syndactyly and split hand/foot. Developmental abnormalities of the eye can include anophthalmia/microphthalmia, iris and chorioretinal coloboma, and lacrimal duct abnormalities. Craniofacial findings can include facial asymmetry, notched alae nasi, cleft lip and palate, pointed chin, and small, underfolded pinnae. Dental anomalies can include hypodontia, enamel defects, and/or abnormally shaped teeth. Occasional findings include abdominal wall defects, diaphragmatic hernia, and renal anomalies. Psychomotor development is usually normal; some individuals have cognitive impairment and/or behavioral issues.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/42055">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_42105"><div><strong>Hereditary fructosuria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>42105</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0016751</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Following dietary exposure to fructose, sucrose, or sorbitol, untreated hereditary fructose intolerance (HFI) is characterized by metabolic disturbances (hypoglycemia, lactic acidemia, hypophosphatemia, hyperuricemia, hypermagnesemia, hyperalaninemia) and clinical findings (nausea, vomiting, and abdominal distress; chronic growth restriction / failure to thrive). While untreated HFI typically first manifested when fructose- and sucrose-containing foods were introduced in the course of weaning young infants from breast milk, it is now presenting earlier, due to the addition of fructose-containing nutrients in infant formulas. If the infant ingests large quantities of fructose, the infant may acutely develop lethargy, seizures, and/or progressive coma. Untreated HFI may result in renal and hepatic failure. If identified and treated before permanent organ injury occurs, individuals with HFI can experience a normal quality of life and life expectancy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/42105">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_5288"><div><strong>Fucosidosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>5288</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0016788</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fucosidosis is an autosomal recessive lysosomal storage disease caused by defective alpha-L-fucosidase with accumulation of fucose in the tissues. Clinical features include angiokeratoma, progressive psychomotor retardation, neurologic signs, coarse facial features, and dysostosis multiplex.&#13; Fucosidosis has been classified into 2 major types. Type 1 is characterized by rapid psychomotor regression and severe neurologic deterioration beginning at about 6 months of age, elevated sweat sodium chloride, and death within the first decade of life. Type 2 is characterized by milder psychomotor retardation and neurologic signs, the development of angiokeratoma corporis diffusum, normal sweat salinity, and longer survival (Kousseff et al., 1976).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/5288">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_5414"><div><strong>Hallermann-Streiff syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>5414</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0018522</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hallermann-Streiff syndrome is characterized by a typical skull shape (brachycephaly with frontal bossing), hypotrichosis, microphthalmia, cataracts, beaked nose, micrognathia, skin atrophy, dental anomalies, and proportionate short stature (Hallermann, 1948; Streiff, 1950; Francois, 1958). Mental retardation is present in a minority of cases (Gorlin et al., 1990).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/5414">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_6708"><div><strong>Pigmentary pallidal degeneration</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>6708</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0018523</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pantothenate kinase-associated neurodegeneration (PKAN) is a type of neurodegeneration with brain iron accumulation (NBIA). The phenotypic spectrum of PKAN includes classic PKAN and atypical PKAN. Classic PKAN is characterized by early-childhood onset of progressive dystonia, dysarthria, rigidity, and choreoathetosis. Pigmentary retinal degeneration is common. Atypical PKAN is characterized by later onset (age &gt;10 years), prominent speech defects, psychiatric disturbances, and more gradual progression of disease.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/6708">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_6723"><div><strong>Neutral 1 amino acid transport defect</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>6723</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0018609</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hartnup disorder (HND) is characterized by transient manifestations of pellagra, cerebellar ataxia, and psychosis. It is caused by impaired transport of neutral amino acids across epithelial cells in renal proximal tubules and intestinal mucosa (summary by Kleta et al., 2004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/6723">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_6915"><div><strong>Hereditary insensitivity to pain with anhidrosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>6915</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0020074</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NTRK1 congenital insensitivity to pain with anhidrosis (NTRK1-CIPA) is characterized by insensitivity to pain, anhidrosis (the inability to sweat), and intellectual disability. The ability to sense all pain (including visceral pain) is absent, resulting in repeated injuries including: oral self-mutilation (biting of tongue, lips, and buccal mucosa); biting of fingertips; bruising, scarring, and infection of the skin; multiple bone fractures (many of which fail to heal properly); and recurrent joint dislocations resulting in joint deformity. Sense of touch, vibration, and position are normal. Anhidrosis predisposes to recurrent febrile episodes that are often the initial manifestation of NTRK1-CIPA. Hypothermia in cold environments also occurs. Intellectual disability of varying degree is observed in most affected individuals; hyperactivity and emotional lability are common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/6915">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_7049"><div><strong>Incontinentia pigmenti syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>7049</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0021171</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Incontinentia pigmenti (IP) is a disorder that affects the skin, hair, teeth, nails, eyes, and central nervous system; it occurs primarily in females and on occasion in males. Characteristic skin lesions evolve through four stages: I.. Blistering (birth to age ~4 months). II.. Wart-like rash (for several months). III.. Swirling macular hyperpigmentation (age ~6 months into adulthood). IV.. Linear hypopigmentation. Alopecia, hypodontia, abnormal tooth shape, and dystrophic nails are observed. Neovascularization of the retina, present in some individuals, predisposes to retinal detachment. Neurologic findings including seizures, intellectual disability, and developmental delays are occasionally seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/7049">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_5920"><div><strong>Ito hypomelanosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>5920</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0022283</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Hypomelanosis of Ito (HMI) is a systemic neurocutaneous disorder characterized cutaneously by hypopigmented areas with irregular borders, streaks, whorls, or patches that are more evident on hyperpigmented skin or by examination under the ultraviolet light of a Wood lamp. These areas show a reduction in the number of melanocytes and in the size and number of melanosomes. Other cutaneous lesions such as cafe au lait spots, cutis marmorata, angiomatous nevi, heterochromia of iris or hair, and diffuse alopecia or trichorhexis may be present. More than 60% of cases also show clinical, radiologic, or histologic abnormalities of the central nervous system, with the most common abnormalities being impaired intellectual development and seizures (summary by Urgelles et al., 1996). There is evidence that the disorder is not a distinct entity but is rather a symptom of many different states of mosaicism (summary by Happle, 1998).&#13; See also linear and whorled nevoid hypermelanosis (LWNH; 614323), a benign pigmentation disorder with some similarities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/5920">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_44030"><div><strong>Menkes kinky-hair syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>44030</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0022716</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Menkes disease (MNK) is an X-linked recessive disorder characterized by generalized copper deficiency. The clinical features result from the dysfunction of several copper-dependent enzymes.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/44030">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_9646"><div><strong>Angioosteohypertrophic syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>9646</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0022739</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Klippel-Trenaunay syndrome is a condition that affects the development of blood vessels, soft tissues (such as skin and muscles), and bones. The disorder has three characteristic features: a red birthmark called a port-wine stain, abnormal overgrowth of soft tissues and bones, and vein malformations.\n\nMost people with Klippel-Trenaunay syndrome are born with a port-wine stain. This type of birthmark is caused by swelling of small blood vessels near the surface of the skin. Port-wine stains are typically flat and can vary from pale pink to deep maroon in color. In people with Klippel-Trenaunay syndrome, the port-wine stain usually covers part of one limb. The affected area may become lighter or darker with age. Occasionally, port-wine stains develop small red blisters that break open and bleed easily.\n\nKlippel-Trenaunay syndrome is also associated with overgrowth of bones and soft tissues beginning in infancy. Usually this abnormal growth is limited to one limb, most often one leg. However, overgrowth can also affect the arms or, rarely, the torso. The abnormal growth can cause pain, a feeling of heaviness, and reduced movement in the affected area. If the overgrowth causes one leg to be longer than the other, it can also lead to problems with walking.\n\nMalformations of veins are the third major feature of Klippel-Trenaunay syndrome. These abnormalities include varicose veins, which are swollen and twisted veins near the surface of the skin that often cause pain. Varicose veins usually occur on the sides of the upper legs and calves. Veins deep in the limbs can also be abnormal in people with Klippel-Trenaunay syndrome. Malformations of deep veins increase the risk of a type of blood clot called a deep vein thrombosis (DVT). If a DVT travels through the bloodstream and lodges in the lungs, it can cause a life-threatening blood clot known as a pulmonary embolism (PE).\n\nOther complications of Klippel-Trenaunay syndrome can include a type of skin infection called cellulitis, swelling caused by a buildup of fluid (lymphedema), and internal bleeding from abnormal blood vessels. Less commonly, this condition is also associated with fusion of certain fingers or toes (syndactyly) or the presence of extra digits (polydactyly).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/9646">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_6009"><div><strong>Langer-Giedion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>6009</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0023003</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Trichorhinophalangeal syndrome (TRPS) comprises TRPS I (caused by a heterozygous pathogenic variant in TRPS1) and TRPS II (caused by a contiguous gene deletion of TRPS1, RAD21, and EXT1). Both TRPS types are characterized by distinctive facial features (large nose with broad nasal ridge and tip and underdeveloped alae; thick and broad medial eyebrows; long philtrum; thin vermilion of the upper lip; and large prominent ears); ectodermal features (fine, sparse, depigmented, and slow-growing hair and dystrophic nails); and skeletal findings (short stature, brachydactyly with ulnar or radial deviation of the fingers, short feet, and early, marked hip dysplasia). TRPS II is additionally characterized by multiple osteochondromas and an increased risk of mild-to-moderate intellectual disability.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/6009">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_44078"><div><strong>Laurence-Moon syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>44078</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0023138</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PNPLA6 disorders span a phenotypic continuum characterized by variable combinations of cerebellar ataxia; upper motor neuron involvement manifesting as spasticity and/or brisk reflexes; chorioretinal dystrophy associated with variable degrees of reduced visual function; and hypogonadotropic hypogonadism (delayed puberty and lack of secondary sex characteristics). The hypogonadotropic hypogonadism occurs either in isolation or as part of anterior hypopituitarism (growth hormone, thyroid hormone, or gonadotropin deficiencies). Common but less frequent features are peripheral neuropathy (usually of axonal type manifesting as reduced distal reflexes, diminished vibratory sensation, and/or distal muscle wasting); hair anomalies (long eyelashes, bushy eyebrows, or scalp alopecia); short stature; and impaired cognitive functioning (learning disabilities in children; deficits in attention, visuospatial abilities, and recall in adults). Some of these features can occur in distinct clusters on the phenotypic continuum: Boucher-Neuhäuser syndrome (cerebellar ataxia, chorioretinal dystrophy, and hypogonadotropic hypogonadism); Gordon Holmes syndrome (cerebellar ataxia, hypogonadotropic hypogonadism, and – to a variable degree – brisk reflexes); Oliver-McFarlane syndrome (trichomegaly, chorioretinal dystrophy, short stature, intellectual disability, and hypopituitarism); Laurence-Moon syndrome; and spastic paraplegia type 39 (SPG39) (upper motor neuron involvement, peripheral neuropathy, and sometimes reduced cognitive functioning and/or cerebellar ataxia).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/44078">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_9721"><div><strong>Lesch-Nyhan syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>9721</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0023374</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">HPRT1 disorders, caused by deficiency of the enzyme hypoxanthine-guanine phosphoribosyltransferase (HGprt), are typically associated with clinical evidence for overproduction of uric acid (hyperuricemia, nephrolithiasis, and/or gouty arthritis) and varying degrees of neurologic and/or behavioral problems. Historically, three phenotypes were identified in the spectrum of HPRT1 disorders: Lesch-Nyhan disease (LND) at the most severe end with motor dysfunction resembling severe cerebral palsy, intellectual disability, and self-injurious behavior; HPRT1-related neurologic dysfunction (HND) in the intermediate range with similar but fewer severe neurologic findings than LND and no self-injurious behavior; and HPRT1-related hyperuricemia (HRH) at the mild end without overt neurologic deficits. It is now recognized that these neurobehavioral phenotypes cluster along a continuum from severe to mild.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/9721">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_6071"><div><strong>Metachromatic leukodystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>6071</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0023522</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Arylsulfatase A deficiency (also known as metachromatic leukodystrophy or MLD) is characterized by three clinical subtypes: late-infantile, juvenile, and adult MLD. The age of onset within a family is usually similar. The disease course may be from several years in the late-infantile-onset form to decades in the juvenile- and adult-onset forms. Late-infantile MLD: Onset is before age 30 months. Typical presenting findings include weakness, hypotonia, clumsiness, frequent falls, toe walking, and dysarthria. Language, cognitive, and gross and fine motor skills regress as the disease progresses. Later signs include spasticity, pain, seizures, and compromised vision and hearing. In the final stages, children have tonic spasms, decerebrate posturing, and general unawareness of their surroundings. Juvenile MLD: Onset is between age 30 months and 16 years. Initial manifestations include a decline in school performance and the emergence of behavioral problems, followed by gait disturbances. Progression is similar to but slower than in the late-infantile form. Adult MLD: Onset occurs after the age of 16 years, sometimes not until the fourth or fifth decade. Initial signs can include problems in school or job performance, personality changes, emotional lability, or psychosis; in others, neurologic symptoms (weakness and loss of coordination progressing to spasticity and incontinence) or seizures predominate initially. Peripheral neuropathy is common. The disease course is variable, with periods of stability interspersed with periods of decline, and may extend over two to three decades. The final stage is similar to earlier-onset forms.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/6071">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_7467"><div><strong>Deficiency of alpha-mannosidase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>7467</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0024748</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The clinical phenotype of alpha-mannosidosis varies considerably, with a wide spectrum of clinical findings and broad variability in individual presentation. At least three clinical types have been suggested in untreated individuals: mild (clinically recognized after age ten years, with myopathy, slow progression, and absence of skeletal abnormalities); moderate (clinically recognized before age ten years, with myopathy, slow progression, and presence of skeletal abnormalities); and severe (obvious progression leading to early death from primary central nervous system involvement or infection). Core features of untreated individuals generally include early childhood-onset non-progressive hearing loss, frequent infections due to immunodeficiency, rheumatologic symptoms (especially systemic lupus erythematosus), developmental delay / intellectual disability, low tone, ataxia, spastic paraplegia, psychiatric findings, bone disease (ranging from asymptomatic osteopenia to focal lytic or sclerotic lesions and osteonecrosis), gastrointestinal dysfunction (including diarrhea, swallowing issues / aspiration, and enlarged liver and spleen), poor growth, eye issues (including tapetoretinal degeneration and optic nerve atrophy), cardiac complications in adults, and pulmonary issues (including parenchymal lung disease). However, with the advent of enzyme replacement therapy, the natural history of this condition may change. Long-term velmanase alfa (VA) treatment outcomes are still being elucidated, but may include improvement in hearing, immunologic profile, and quality of life (improved clinical outcomes for muscle strength). Similarly, affected individuals who underwent hematopoietic stem cell transplantation (HSCT) experienced improvement in development (with preservation of previously learned skills), ability to participate in activities of daily living, stabilization or improvement in skeletal abnormalities, and improvement in hearing ability, although expressive speech and hearing deficiencies remained the most significant clinical problems after HSCT.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/7467">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_6222"><div><strong>Marinesco-Sjögren syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>6222</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0024814</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Marinesco-Sjögren syndrome (MSS) is characterized by cerebellar ataxia with cerebellar atrophy, dysarthria, nystagmus, early-onset (not necessarily congenital) cataracts, myopathy, muscle weakness, and hypotonia. Additional features may include psychomotor delay, hypergonadotropic hypogonadism, short stature, and various skeletal abnormalities. Children with MSS usually present with muscular hypotonia in early infancy; distal and proximal muscular weakness is noticed during the first decade of life. Later, cerebellar findings of truncal ataxia, dysdiadochokinesia, nystagmus, and dysarthria become apparent. Motor function worsens progressively for some years, then stabilizes at an unpredictable age and degree of severity. Cataracts can develop rapidly and typically require lens extraction in the first decade of life. Although many adults have severe disabilities, life span in MSS appears to be near normal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/6222">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_6453"><div><strong>Mucopolysaccharidosis, MPS-I-S</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>6453</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0026708</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mucopolysaccharidosis type I (MPS I) is a progressive multisystem disorder with features ranging over a continuum of severity. While affected individuals have traditionally been classified as having one of three MPS I syndromes (Hurler syndrome, Hurler-Scheie syndrome, or Scheie syndrome), no easily measurable biochemical differences have been identified and the clinical findings overlap. Affected individuals are best described as having either a phenotype consistent with either severe (Hurler syndrome) or attenuated MPS I, a distinction that influences therapeutic options. Severe MPS I: Infants appear normal at birth. Typical early manifestations are nonspecific (e.g., umbilical or inguinal hernia, frequent upper respiratory tract infections before age 1 year). Coarsening of the facial features may not become apparent until after age one year. Gibbus deformity of the lower spine is common and often noted within the first year. Progressive skeletal dysplasia (dysostosis multiplex) involving all bones is universal, as is progressive arthropathy involving most joints. By age three years, linear growth decreases. Intellectual disability is progressive and profound but may not be readily apparent in the first year of life. Progressive cardiorespiratory involvement, hearing loss, and corneal clouding are common. Without treatment, death (typically from cardiorespiratory failure) usually occurs within the first ten years of life. Attenuated MPS I: Clinical onset is usually between ages three and ten years. The severity and rate of disease progression range from serious life-threatening complications leading to death in the second to third decade, to a normal life span complicated by significant disability from progressive joint manifestations and cardiorespiratory disease. While some individuals have no neurologic involvement and psychomotor development may be normal in early childhood, learning disabilities and psychiatric manifestations can be present later in life. Hearing loss, cardiac valvular disease, respiratory involvement, and corneal clouding are common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/6453">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_44514"><div><strong>Mucopolysaccharidosis type 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>44514</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0026709</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mucopolysaccharidosis type VI (MPS6) is an autosomal recessive lysosomal storage disorder resulting from a deficiency of arylsulfatase B. Clinical features and severity are variable, but usually include short stature, hepatosplenomegaly, dysostosis multiplex, stiff joints, corneal clouding, cardiac abnormalities, and facial dysmorphism. Intelligence is usually normal (Azevedo et al., 2004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/44514">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_18145"><div><strong>Lowe syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>18145</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0028860</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Lowe syndrome (oculocerebrorenal syndrome) is characterized by involvement of the eyes, central nervous system, and kidneys. Dense congenital cataracts are found in all affected boys and infantile glaucoma in approximately 50%. All boys have impaired vision; corrected acuity is rarely better than 20/100. Generalized hypotonia is noted at birth and is of central (brain) origin. Deep tendon reflexes are usually absent. Hypotonia may slowly improve with age, but normal motor tone and strength are never achieved. Motor milestones are delayed. Almost all affected males have some degree of intellectual disability; 10%-25% function in the low-normal or borderline range, approximately 25% in the mild-to-moderate range, and 50%-65% in the severe-to-profound range of intellectual disability. Affected males have varying degrees of proximal renal tubular dysfunction of the Fanconi type, including low molecular-weight (LMW) proteinuria, aminoaciduria, bicarbonate wasting and renal tubular acidosis, phosphaturia with hypophosphatemia and renal rickets, hypercalciuria, sodium and potassium wasting, and polyuria. The features of symptomatic Fanconi syndrome do not usually become manifest until after the first few months of life, except for LMW proteinuria. Glomerulosclerosis associated with chronic tubular injury usually results in slowly progressive chronic renal failure and end-stage renal disease between the second and fourth decades of life.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/18145">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_10617"><div><strong>Pelger-Huët anomaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>10617</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0030779</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pelger-Huet anomaly (PHA) is an autosomal dominant disorder characterized by hypolobulated neutrophil nuclei with coarse chromatin (Hoffmann et al., 2002). The nucleus of the granulocytes has been described as hyposegmented, being rodlike, dumbbell- or peanut-shaped, or spectaclelike.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/10617">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_19244"><div><strong>Phenylketonuria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>19244</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0031485</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Phenylalanine hydroxylase (PAH) deficiency results in intolerance to the dietary intake of the essential amino acid phenylalanine and produces a spectrum of disorders. The risk of adverse outcome varies based on the degree of PAH deficiency. Without effective therapy, most individuals with severe PAH deficiency, known as classic PKU, develop profound and irreversible intellectual disability. Affected individuals on an unrestricted diet who have phenylalanine levels above normal but below 1,200 µmol/L (20 mg/dL) are at much lower risk for impaired cognitive development in the absence of treatment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/19244">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_46057"><div><strong>Prader-Willi syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>46057</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0032897</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Prader-Willi syndrome (PWS) is characterized by severe hypotonia, poor appetite, and feeding difficulties in early infancy, followed in early childhood by excessive eating and gradual development of morbid obesity (unless food intake is strictly controlled). Motor milestones and language development are delayed. All individuals have some degree of cognitive impairment. Hypogonadism is present in both males and females and manifests as genital hypoplasia, incomplete pubertal development, and, in most, infertility. Short stature is common (if not treated with growth hormone). A distinctive behavioral phenotype (temper tantrums, stubbornness, manipulative behavior, and obsessive-compulsive characteristics) is common. Characteristic facial features, strabismus, and scoliosis are often present.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/46057">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_10988"><div><strong>Pseudo-Hurler polydystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>10988</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0033788</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GNPTAB-related disorders comprise the phenotypes mucolipidosis II (ML II) and mucolipidosis IIIa/ß (ML IIIa/ß), and phenotypes intermediate between ML II and ML IIIa/ß. ML II is evident at birth and slowly progressive; death most often occurs in early childhood. Orthopedic abnormalities present at birth may include thoracic deformity, kyphosis, clubfeet, deformed long bones, and/or dislocation of the hip(s). Growth often ceases in the second year of life; contractures develop in all large joints. The skin is thickened, facial features are coarse, and gingiva are hypertrophic. All children have cardiac involvement, most commonly thickening and insufficiency of the mitral valve and, less frequently, the aortic valve. Progressive mucosal thickening narrows the airways, and gradual stiffening of the thoracic cage contributes to respiratory insufficiency, the most common cause of death. ML IIIa/ß becomes evident at about age three years with slow growth rate and short stature; joint stiffness and pain initially in the shoulders, hips, and fingers; gradual mild coarsening of facial features; and normal to mildly impaired cognitive development. Pain from osteoporosis becomes more severe during adolescence. Cardiorespiratory complications (restrictive lung disease, thickening and insufficiency of the mitral and aortic valves, left and/or right ventricular hypertrophy) are common causes of death, typically in early to middle adulthood. Phenotypes intermediate between ML II and ML IIIa/ß are characterized by physical growth in infancy that resembles that of ML II and neuromotor and speech development that resemble that of ML IIIa/ß.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/10988">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_10995"><div><strong>Pseudopseudohypoparathyroidism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>10995</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0033835</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Disorders of GNAS inactivation include the phenotypes pseudohypoparathyroidism Ia, Ib, and Ic (PHP-Ia, -Ib, -Ic), pseudopseudohypoparathyroidism (PPHP), progressive osseous heteroplasia (POH), and osteoma cutis (OC). PHP-Ia and PHP-Ic are characterized by: End-organ resistance to endocrine hormones including parathyroid hormone (PTH), thyroid-stimulating hormone (TSH), gonadotropins (LH and FSH), growth hormone-releasing hormone (GHRH), and CNS neurotransmitters (leading to obesity and variable degrees of intellectual disability and developmental delay); and The Albright hereditary osteodystrophy (AHO) phenotype (short stature, round facies, and subcutaneous ossifications) and brachydactyly type E (shortening mainly of the 4th and/or 5th metacarpals and metatarsals and distal phalanx of the thumb). Although PHP-Ib is characterized principally by PTH resistance, some individuals also have partial TSH resistance and mild features of AHO (e.g., brachydactyly). PPHP, a more limited form of PHP-Ia, is characterized by various manifestations of the AHO phenotype without the hormone resistance or obesity. POH and OC are even more restricted variants of PPHP: POH consists of dermal ossification beginning in infancy, followed by increasing and extensive bone formation in deep muscle and fascia. OC consists of extra-skeletal ossification that is limited to the dermis and subcutaneous tissues.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/10995">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_18801"><div><strong>Pyruvate carboxylase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>18801</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0034341</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pyruvate carboxylase (PC) deficiency is characterized in most affected individuals by failure to gain weight and/or linear growth failure, developmental delay, epilepsy, and metabolic acidosis. Three clinical phenotypes are recognized. Type A (infantile form) is characterized by infantile onset of metabolic and lactic acidosis, delayed motor development, intellectual disability, poor linear growth and/or weight gain, and neurologic findings (apathy, hypotonia, pyramidal and extrapyramidal signs, ataxia, and seizures). Brain anomalies can be noted. Most affected children die in infancy or early childhood. Type B (severe neonatal form) is characterized by neonatal or infantile onset of hypothermia, respiratory distress/failure, vomiting, severe lactic acidosis, hyperammonemia, and often hypoglycemia. Neurologic findings include brain abnormalities, lethargy, hypotonia, and pyramidal and extrapyramidal signs. Death typically occurs by age eight months. Type C (intermittent/attenuated form) is characterized by relatively normal or mildly delayed neurologic development, motor and/or gait abnormalities, (rarely) seizures, episodic movement disorders, and metabolic acidosis. Life span is unknown but survival into adulthood has been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/18801">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_11443"><div><strong>Sjögren-Larsson syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>11443</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0037231</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Sjogren-Larsson syndrome (SLS) is an autosomal recessive, early childhood-onset disorder characterized by ichthyosis, impaired intellectual development, spastic paraparesis, macular dystrophy, and leukoencephalopathy. It is caused by deficiency of fatty aldehyde dehydrogenase (summary by Lossos et al., 2006).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/11443">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_21361"><div><strong>Sturge-Weber syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>21361</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0038505</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Sturge-Weber syndrome (SWS) is characterized by an intracranial vascular anomaly, leptomeningeal angiomatosis, most often involving the occipital and posterior parietal lobes. The most common symptoms and signs are facial cutaneous vascular malformations (port-wine stains), seizures, and glaucoma. Stasis results in ischemia underlying the leptomeningeal angiomatosis, leading to calcification and laminar cortical necrosis. The clinical course is highly variable and some children experience intractable seizures, mental retardation, and recurrent stroke-like episodes (review by Thomas-Sohl et al., 2004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/21361">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_86937"><div><strong>X-linked ichthyosis with steryl-sulfatase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>86937</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0079588</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked ichthyosis is clinically characterized by widespread, dark brown, polygonal scales and generalized dryness. Cutaneous manifestations are present soon after birth and usually do not improve with age. The histopathology of XLI typically shows compact hyperkeratosis and slight acanthosis with a normal granular layer (summary by Takeichi and Akiyama, 2016).&#13; X-linked ichthyosis is fundamentally the same disorder as placental steroid sulfatase deficiency, which is often first noted in the pregnant mother of affected males by decreased estrogen or delayed progression of parturition (Alperin and Shapiro, 1997). This is thus an example of affinity ('lumping') of phenotypes thought previously to be separate, the opposite of genetic heterogeneity.&#13; Schnyder (1970) gave a useful classification of the inherited ichthyoses.&#13; Hernandez-Martin et al. (1999) provided a comprehensive review of X-linked ichthyosis. They pointed out that among all genetic disorders X-linked ichthyosis shows one of the highest ratios of chromosomal deletions; complete deletion has been found in up to 90% of patients.&#13; Takeichi and Akiyama (2016) reviewed inherited nonsyndromic forms of ichthyosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/86937">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_86948"><div><strong>Waardenburg syndrome type 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>86948</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0079661</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Waardenburg syndrome type 3 is an auditory-pigmentary syndrome characterized by pigmentary abnormalities of the hair, skin, and eyes; congenital sensorineural hearing loss; presence of 'dystopia canthorum,' the lateral displacement of the ocular inner canthi; and upper limb abnormalities (reviews by Read and Newton, 1997 and Pingault et al., 2010). WS type 3 is also referred to as 'Klein-Waardenburg syndrome' (Gorlin et al., 1976).&#13; Clinical Variability of Waardenburg Syndrome Types 1-4&#13; Waardenburg syndrome has been classified into 4 main phenotypes. Type I Waardenburg syndrome (WS1; 193500) is characterized by pigmentary abnormalities of the hair, including a white forelock and premature graying; pigmentary changes of the iris, such as heterochromia iridis and brilliant blue eyes; congenital sensorineural hearing loss; and 'dystopia canthorum.' WS type II (WS2) is distinguished from type I by the absence of dystopia canthorum. WS type III has dystopia canthorum and is distinguished by the presence of upper limb abnormalities. WS type IV (WS4; 277580), also known as Waardenburg-Shah syndrome, has the additional feature of Hirschsprung disease (reviews by Read and Newton, 1997 and Pingault et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/86948">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_43108"><div><strong>Mucopolysaccharidosis type 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>43108</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0085132</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Individuals with mucopolysaccharidosis type VII (MPS VII) can present perinatally with early demise, nonimmune hydrops fetalis, cholestatic jaundice, and hepatosplenomegaly, or in early childhood with developmental delay and characteristic musculoskeletal features (e.g., short neck, short-trunk short stature, pectus deformity, gibbus, and joint stiffness/contractures) and craniofacial features (e.g., macrocephaly, coarse hair, coarse facies, corneal clouding, and macroglossia). Skeletal survey shows features of dysostosis multiplex including thickened cortical bone, abnormal J-shaped sella turcica, paddle- or oar-shaped ribs, short, thickened clavicles, platyspondyly with anterior beaking of the lower thoracic and lumbar vertebrae, and proximal pointing of the metacarpals and metatarsals. Complications include developmental delay, intellectual disability, hepatosplenomegaly, spinal stenosis, recurrent otitis media, hearing loss, pulmonary disease, obstructive sleep apnea, hernias, feeding difficulties, and heart valve disease.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/43108">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_39264"><div><strong>Mucopolysaccharidosis, MPS-III-A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>39264</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0086647</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mucopolysaccharidosis type III (MPS III) is a multisystem lysosomal storage disease characterized by progressive central nervous system degeneration manifest as severe intellectual disability (ID), developmental regression, and other neurologic manifestations including autism spectrum disorder (ASD), behavioral problems, and sleep disturbances. Disease onset is typically before age ten years. Disease course may be rapidly or slowly progressive; some individuals with an extremely attenuated disease course present in mid-to-late adulthood with early-onset dementia with or without a history of ID. Systemic manifestations can include musculoskeletal problems (joint stiffness, contractures, scoliosis, and hip dysplasia), hearing loss, respiratory tract and sinopulmonary infections, and cardiac disease (valvular thickening, defects in the cardiac conduction system). Neurologic decline is seen in all affected individuals; however, clinical severity varies within and among the four MPS III subtypes (defined by the enzyme involved) and even among members of the same family. Death usually occurs in the second or third decade of life secondary to neurologic regression or respiratory tract infections.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/39264">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_88601"><div><strong>Mucopolysaccharidosis, MPS-III-B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>88601</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0086648</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mucopolysaccharidosis type III (MPS III) is a multisystem lysosomal storage disease characterized by progressive central nervous system degeneration manifest as severe intellectual disability (ID), developmental regression, and other neurologic manifestations including autism spectrum disorder (ASD), behavioral problems, and sleep disturbances. Disease onset is typically before age ten years. Disease course may be rapidly or slowly progressive; some individuals with an extremely attenuated disease course present in mid-to-late adulthood with early-onset dementia with or without a history of ID. Systemic manifestations can include musculoskeletal problems (joint stiffness, contractures, scoliosis, and hip dysplasia), hearing loss, respiratory tract and sinopulmonary infections, and cardiac disease (valvular thickening, defects in the cardiac conduction system). Neurologic decline is seen in all affected individuals; however, clinical severity varies within and among the four MPS III subtypes (defined by the enzyme involved) and even among members of the same family. Death usually occurs in the second or third decade of life secondary to neurologic regression or respiratory tract infections.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/88601">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_39477"><div><strong>Mucopolysaccharidosis, MPS-III-C</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>39477</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0086649</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mucopolysaccharidosis type III (MPS III) is a multisystem lysosomal storage disease characterized by progressive central nervous system degeneration manifest as severe intellectual disability (ID), developmental regression, and other neurologic manifestations including autism spectrum disorder (ASD), behavioral problems, and sleep disturbances. Disease onset is typically before age ten years. Disease course may be rapidly or slowly progressive; some individuals with an extremely attenuated disease course present in mid-to-late adulthood with early-onset dementia with or without a history of ID. Systemic manifestations can include musculoskeletal problems (joint stiffness, contractures, scoliosis, and hip dysplasia), hearing loss, respiratory tract and sinopulmonary infections, and cardiac disease (valvular thickening, defects in the cardiac conduction system). Neurologic decline is seen in all affected individuals; however, clinical severity varies within and among the four MPS III subtypes (defined by the enzyme involved) and even among members of the same family. Death usually occurs in the second or third decade of life secondary to neurologic regression or respiratory tract infections.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/39477">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_88602"><div><strong>Mucopolysaccharidosis, MPS-III-D</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>88602</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0086650</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mucopolysaccharidosis type III (MPS III) is a multisystem lysosomal storage disease characterized by progressive central nervous system degeneration manifest as severe intellectual disability (ID), developmental regression, and other neurologic manifestations including autism spectrum disorder (ASD), behavioral problems, and sleep disturbances. Disease onset is typically before age ten years. Disease course may be rapidly or slowly progressive; some individuals with an extremely attenuated disease course present in mid-to-late adulthood with early-onset dementia with or without a history of ID. Systemic manifestations can include musculoskeletal problems (joint stiffness, contractures, scoliosis, and hip dysplasia), hearing loss, respiratory tract and sinopulmonary infections, and cardiac disease (valvular thickening, defects in the cardiac conduction system). Neurologic decline is seen in all affected individuals; however, clinical severity varies within and among the four MPS III subtypes (defined by the enzyme involved) and even among members of the same family. Death usually occurs in the second or third decade of life secondary to neurologic regression or respiratory tract infections.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/88602">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_43375"><div><strong>Mucopolysaccharidosis, MPS-IV-A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>43375</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0086651</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The phenotypic spectrum of mucopolysaccharidosis IVA (MPS IVA) is a continuum that ranges from a severe and rapidly progressive early-onset form to a slowly progressive later-onset form. Children with MPS IVA typically have no distinctive clinical findings at birth. The severe form is usually apparent between ages one and three years, often first manifesting as kyphoscoliosis, genu valgum (knock-knee), and pectus carinatum; the slowly progressive form may not become evident until late childhood or adolescence, often first manifesting as hip problems (pain, stiffness, and Legg Perthes disease). Progressive bone and joint involvement leads to short stature, and eventually to disabling pain and arthritis. Involvement of other organ systems can lead to significant morbidity, including respiratory compromise, obstructive sleep apnea, valvular heart disease, hearing impairment, visual impairment from corneal clouding, dental abnormalities, and hepatomegaly. Compression of the spinal cord is a common complication that results in neurologic impairment. Children with MPS IVA have normal intellectual abilities at the outset of the disease.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/43375">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_43376"><div><strong>Mucopolysaccharidosis, MPS-IV-B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>43376</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0086652</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GLB1-related disorders comprise two phenotypically distinct lysosomal storage disorders: GM1 gangliosidosis and mucopolysaccharidosis type IVB (MPS IVB). The phenotype of GM1 gangliosidosis constitutes a spectrum ranging from severe (infantile) to intermediate (late-infantile and juvenile) to mild (chronic/adult). Type I (infantile) GM1 gangliosidosis begins before age 12 months. Prenatal manifestations may include nonimmune hydrops fetalis, intrauterine growth restriction, and placental vacuolization; congenital dermal melanocytosis (Mongolian spots) may be observed. Macular cherry-red spot is detected on eye exam. Progressive central nervous system dysfunction leads to spasticity and rapid regression; blindness, deafness, decerebrate rigidity, seizures, feeding difficulties, and oral secretions are observed. Life expectancy is two to three years. Type II can be subdivided into the late-infantile (onset age 1-3 years) and juvenile (onset age 3-10 years) phenotypes. Central nervous system dysfunction manifests as progressive cognitive, motor, and speech decline as measured by psychometric testing. There may be mild corneal clouding, hepatosplenomegaly, and/or cardiomyopathy; the typical course is characterized by progressive neurologic decline, progressive skeletal disease in some individuals (including kyphosis and avascular necrosis of the femoral heads), and progressive feeding difficulties leading to aspiration risk. Type III begins in late childhood to the third decade with generalized dystonia leading to unsteady gait and speech disturbance followed by extrapyramidal signs including akinetic-rigid parkinsonism. Cardiomyopathy develops in some and skeletal involvement occurs in most. Intellectual impairment is common late in the disease with prognosis directly related to the degree of neurologic impairment. MPS IVB is characterized by skeletal dysplasia with specific findings of axial and appendicular dysostosis multiplex, short stature (below 15th centile in adults), kyphoscoliosis, coxa/genu valga, joint laxity, platyspondyly, and odontoid hypoplasia. First signs and symptoms may be apparent at birth. Bony involvement is progressive, with more than 84% of adults requiring ambulation aids; life span does not appear to be limited. Corneal clouding is detected in some individuals and cardiac valvular disease may develop.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/43376">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_39698"><div><strong>Hurler syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>39698</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0086795</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mucopolysaccharidosis type I (MPS I) is a progressive multisystem disorder with features ranging over a continuum of severity. While affected individuals have traditionally been classified as having one of three MPS I syndromes (Hurler syndrome, Hurler-Scheie syndrome, or Scheie syndrome), no easily measurable biochemical differences have been identified and the clinical findings overlap. Affected individuals are best described as having either a phenotype consistent with either severe (Hurler syndrome) or attenuated MPS I, a distinction that influences therapeutic options. Severe MPS I: Infants appear normal at birth. Typical early manifestations are nonspecific (e.g., umbilical or inguinal hernia, frequent upper respiratory tract infections before age 1 year). Coarsening of the facial features may not become apparent until after age one year. Gibbus deformity of the lower spine is common and often noted within the first year. Progressive skeletal dysplasia (dysostosis multiplex) involving all bones is universal, as is progressive arthropathy involving most joints. By age three years, linear growth decreases. Intellectual disability is progressive and profound but may not be readily apparent in the first year of life. Progressive cardiorespiratory involvement, hearing loss, and corneal clouding are common. Without treatment, death (typically from cardiorespiratory failure) usually occurs within the first ten years of life. Attenuated MPS I: Clinical onset is usually between ages three and ten years. The severity and rate of disease progression range from serious life-threatening complications leading to death in the second to third decade, to a normal life span complicated by significant disability from progressive joint manifestations and cardiorespiratory disease. While some individuals have no neurologic involvement and psychomotor development may be normal in early childhood, learning disabilities and psychiatric manifestations can be present later in life. Hearing loss, cardiac valvular disease, respiratory involvement, and corneal clouding are common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/39698">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_57509"><div><strong>Cyclical vomiting syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>57509</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0152164</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A condition characterized by recurrent, self-limiting episodes of vomiting associated with intense nausea, pallor, and lethargy. It is commonly a migraine precursor.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/57509">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_59797"><div><strong>Dubowitz syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>59797</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0175691</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dubowitz syndrome (DS) is a rare multiple congenital syndrome characterized primarly by growth retardation, microcephaly, distinctive facial dysmorphism, cutaneous eczema, a mild to severe intellectual deficit and genital abnormalities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/59797">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_59798"><div><strong>Johanson-Blizzard syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>59798</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0175692</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Johanson-Blizzard syndrome (JBS) is an autosomal recessive disorder characterized by poor growth, impaired intellectual development, and variable dysmorphic features, including aplasia or hypoplasia of the nasal alae, abnormal hair patterns or scalp defects, and oligodontia. Other features include hypothyroidism, sensorineural hearing loss, imperforate anus, and pancreatic exocrine insufficiency (summary by Al-Dosari et al., 2008).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/59798">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_61231"><div><strong>Smith-Lemli-Opitz syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>61231</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0175694</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Smith-Lemli-Opitz syndrome (SLOS) is a congenital multiple-anomaly / cognitive impairment syndrome caused by an abnormality in cholesterol metabolism resulting from deficiency of the enzyme 7-dehydrocholesterol (7-DHC) reductase. It is characterized by prenatal and postnatal growth restriction, microcephaly, moderate-to-severe intellectual disability, and multiple major and minor malformations. The malformations include distinctive facial features, cleft palate, cardiac defects, underdeveloped external genitalia in males, postaxial polydactyly, and 2-3 syndactyly of the toes. The clinical spectrum is wide; individuals with normal development and only minor malformations have been described.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/61231">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_61232"><div><strong>Sotos syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>61232</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0175695</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Sotos syndrome is characterized by a distinctive facial appearance (broad and prominent forehead with a dolichocephalic head shape, sparse frontotemporal hair, downslanting palpebral fissures, malar flushing, long and narrow face, long chin); learning disability (early developmental delay, mild-to-severe intellectual impairment); and overgrowth (height and/or head circumference =2 SD above the mean). These three clinical features are considered the cardinal features of Sotos syndrome. Major features of Sotos syndrome include behavioral findings (most notably autistic spectrum disorder), advanced bone age, cardiac anomalies, cranial MRI/CT abnormalities, joint hyperlaxity with or without pes planus, maternal preeclampsia, neonatal complications, renal anomalies, scoliosis, and seizures.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/61232">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_64221"><div><strong>Saethre-Chotzen syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>64221</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0175699</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Saethre-Chotzen syndrome (SCS) is characterized by coronal synostosis (unilateral or bilateral), facial asymmetry (particularly in individuals with unicoronal synostosis), strabismus, ptosis, and characteristic appearance of the ear (small pinna with a prominent superior and/or inferior crus). Syndactyly of digits two and three of the hand is variably present. Cognitive development is usually normal, although those with a large genomic deletion are at an increased risk for intellectual challenges. Less common manifestations of SCS include other skeletal findings (parietal foramina, vertebral segmentation defects, radioulnar synostosis, maxillary hypoplasia, ocular hypertelorism, hallux valgus, duplicated or curved distal hallux), hypertelorism, palatal anomalies, obstructive sleep apnea, increased intracranial pressure, short stature, and congenital heart malformations.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/64221">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_61234"><div><strong>Aarskog syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>61234</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0175701</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Aarskog-Scott syndrome is a genetic disorder that affects the development of many parts of the body, most commonly the head and face, the hands and feet, and the genitals and urinary system (genitourinary tract). This condition mainly affects males, although females may have mild features of the syndrome.\n\nPeople with Aarskog-Scott syndrome often have distinctive facial features, such as widely spaced eyes (hypertelorism), a small nose, a long area between the nose and mouth (philtrum), and a widow's peak hairline. They frequently have mild to moderate short stature during childhood, but their growth usually catches up with that of their peers during puberty. Hand abnormalities are common in this syndrome and include short fingers (brachydactyly), curved pinky fingers (fifth finger clinodactyly), webbing of the skin between some fingers (cutaneous syndactyly), and a single crease across the palm. Affected individuals can also have wide, flat feet with broad, rounded toes. Other abnormalities in people with Aarskog-Scott syndrome include heart defects and a split in the upper lip (cleft lip) with or without an opening in the roof of the mouth (cleft palate).\n\nMost males with Aarskog-Scott syndrome have a shawl scrotum, in which the scrotum surrounds the penis instead of hanging below. Less often, they have undescended testes (cryptorchidism) or a soft out-pouching around the belly-button (umbilical hernia) or in the lower abdomen (inguinal hernia).\n\nThe intellectual development of people with Aarskog-Scott syndrome varies widely. Most individuals with Aarskog-Scott syndrome have normal intelligence; however, some may have mild learning and behavior problems, and in rare cases, severe intellectual disability has been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/61234">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_59799"><div><strong>Williams syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>59799</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0175702</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Williams syndrome (WS) is characterized by developmental delay, intellectual disability (usually mild), a specific cognitive profile, unique personality characteristics, cardiovascular disease (supravalvar aortic stenosis, peripheral pulmonary stenosis, hypertension), connective tissue abnormalities, growth deficiency, endocrine abnormalities (early puberty, hypercalcemia, hypercalciuria, hypothyroidism), and distinctive facies. Hypotonia and hyperextensible joints can result in delayed attainment of motor milestones. Feeding difficulties often lead to poor weight gain in infancy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/59799">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_61235"><div><strong>Radial aplasia-thrombocytopenia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>61235</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0175703</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Thrombocytopenia absent radius (TAR) syndrome is characterized by bilateral absence of the radii with the presence of both thumbs, and thrombocytopenia that is generally transient. Thrombocytopenia may be congenital or may develop within the first few weeks to months of life; in general, thrombocytopenic episodes decrease with age. Cow's milk allergy is common and can be associated with exacerbation of thrombocytopenia. Other anomalies of the skeleton (upper and lower limbs, ribs, and vertebrae), heart, and genitourinary system (renal anomalies and agenesis of uterus, cervix, and upper part of the vagina) can occur.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/61235">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_104498"><div><strong>Corpus callosum, agenesis of</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>104498</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0175754</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">The corpus callosum is the largest fiber tract in the central nervous system and the major interhemispheric fiber bundle in the brain. Formation of the corpus callosum begins as early as 6 weeks' gestation, with the first fibers crossing the midline at 11 to 12 weeks' gestation, and completion of the basic shape by age 18 to 20 weeks (Schell-Apacik et al., 2008). Agenesis of the corpus callosum (ACC) is one of the most frequent malformations in brain with a reported incidence ranging between 0.5 and 70 in 10,000 births. ACC is a clinically and genetically heterogeneous condition, which can be observed either as an isolated condition or as a manifestation in the context of a congenital syndrome (see MOLECULAR GENETICS and Dobyns, 1996). Also see mirror movements-1 and/or agenesis of the corpus callosum (MRMV1; 157600).&#13; Schell-Apacik et al. (2008) noted that there is confusion in the literature regarding radiologic terminology concerning partial absence of the corpus callosum, where various designations have been used, including hypogenesis, hypoplasia, partial agenesis, or dysgenesis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/104498">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_104500"><div><strong>Larsen syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>104500</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0175778</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The FLNB disorders include a spectrum of phenotypes ranging from mild to severe. At the mild end are spondylocarpotarsal synostosis (SCT) syndrome and Larsen syndrome; at the severe end are the phenotypic continuum of atelosteogenesis types I (AOI) and III (AOIII) and Piepkorn osteochondrodysplasia (POCD). SCT syndrome is characterized by postnatal disproportionate short stature, scoliosis and lordosis, clubfeet, hearing loss, dental enamel hypoplasia, carpal and tarsal synostosis, and vertebral fusions. Larsen syndrome is characterized by congenital dislocations of the hip, knee, and elbow; clubfeet (equinovarus or equinovalgus foot deformities); scoliosis and cervical kyphosis, which can be associated with a cervical myelopathy; short, broad, spatulate distal phalanges; distinctive craniofacies (prominent forehead, depressed nasal bridge, malar flattening, and widely spaced eyes); vertebral anomalies; and supernumerary carpal and tarsal bone ossification centers. Individuals with SCT syndrome and Larsen syndrome can have midline cleft palate and hearing loss. AOI and AOIII are characterized by severe short-limbed dwarfism; dislocated hips, knees, and elbows; and clubfeet. AOI is lethal in the perinatal period. In individuals with AOIII, survival beyond the neonatal period is possible with intensive and invasive respiratory support. Piepkorn osteochondrodysplasia (POCD) is a perinatal-lethal micromelic dwarfism characterized by flipper-like limbs (polysyndactyly with complete syndactyly of all fingers and toes, hypoplastic or absent first digits, and duplicated intermediate and distal phalanges), macrobrachycephaly, prominant forehead, hypertelorism, and exophthalmos. Occasional features include cleft palate, omphalocele, and cardiac and genitourinary anomalies. The radiographic features at mid-gestation are characteristic.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/104500">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_61440"><div><strong>Pelizaeus-Merzbacher disease</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>61440</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0205711</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PLP1 disorders of central nervous system myelin formation include a range of phenotypes from Pelizaeus-Merzbacher disease (PMD) to spastic paraplegia 2 (SPG2). PMD typically manifests in infancy or early childhood with nystagmus, hypotonia, and cognitive impairment; the findings progress to severe spasticity and ataxia. Life span is shortened. SPG2 manifests as spastic paraparesis with or without CNS involvement and usually normal life span. Intrafamilial variation of phenotypes can be observed, but the signs are usually fairly consistent within families. Heterozygous females may manifest mild-to-moderate signs of the disease.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/61440">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_64512"><div><strong>11p partial monosomy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>64512</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0206115</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PAX6-related aniridia occurs either as an isolated ocular abnormality or as part of the Wilms tumor-aniridia-genital anomalies-retardation (WAGR) syndrome. Aniridia is a pan ocular disorder affecting the cornea, iris, intraocular pressure (resulting in glaucoma), lens (cataract and lens subluxation), fovea (foveal hypoplasia), and optic nerve (optic nerve coloboma and hypoplasia). Individuals with aniridia characteristically show nystagmus and impaired visual acuity (usually 20/100 - 20/200); however, milder forms of aniridia with subtle iris architecture changes, good vision, and normal foveal structure do occur. Other ocular involvement may include strabismus and occasionally microphthalmia. Although the severity of aniridia can vary between and within families, little variability is usually observed in the two eyes of an affected individual. WAGR syndrome. The risk for Wilms tumor is 42.5%-77%; of those who develop Wilms tumor, 90% do so by age four years and 98% by age seven years. Genital anomalies in males can include cryptorchidism and hypospadias (sometimes resulting in ambiguous genitalia), urethral strictures, ureteric abnormalities, and gonadoblastoma. While females typically have normal external genitalia, they may have uterine abnormalities and streak ovaries. Intellectual disability (defined as IQ &lt;74) is observed in 70%; behavioral abnormalities include attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, anxiety, depression, and obsessive-compulsive disorder. Other individuals with WAGR syndrome can have normal intellect without behavioral issues.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/64512">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_67390"><div><strong>Pfeiffer syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>67390</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0220658</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pfeiffer syndrome is an autosomal dominant craniosynostosis syndrome with characteristic anomalies of the hands and feet. Three clinical subtypes, which have important diagnostic and prognostic implications, have been identified. Type 1, the classic syndrome, is compatible with life and consists of craniosynostosis, midface deficiency, broad thumbs, broad great toes, brachydactyly, and variable syndactyly. Type 2 consists of cloverleaf skull with Pfeiffer hands and feet, together with ankylosis of the elbows. Type 3 is similar to type 2 but without cloverleaf skull. Ocular proptosis is severe, and the anterior cranial base is markedly short. Various visceral malformations have been found in association with type 3. Early demise is characteristic of types 2 and 3 (Cohen, 1993). Cohen and Barone (1994) further tabulated the findings in the 3 types of Pfeiffer syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/67390">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_113099"><div><strong>Arthrogryposis, distal, type 1A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>113099</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0220662</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Distal arthrogryposis type 1 is a disorder characterized by joint deformities (contractures) that restrict movement in the hands and feet. The term "arthrogryposis" comes from the Greek words for joint (arthro-) and crooked or hooked (gryposis). The characteristic features of this condition include permanently bent fingers and toes (camptodactyly), overlapping fingers, and a hand deformity in which all of the fingers are angled outward toward the fifth finger (ulnar deviation). Clubfoot, which is an inward- and upward-turning foot, is also commonly seen with distal arthrogryposis type 1. The specific hand and foot abnormalities vary among affected individuals. However, this condition typically does not cause any signs and symptoms affecting other parts of the body.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/113099">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_66317"><div><strong>KBG syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>66317</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0220687</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">KBG syndrome is typically characterized by macrodontia (especially of the upper central incisors), characteristic facial features (triangular face, brachycephaly, synophrys, widely spaced eyes, broad or bushy eyebrows, prominent ears, prominent nasal bridge, bulbous nose, anteverted nares, long philtrum, and thin vermilion of the upper lip), short stature, developmental delay / intellectual disability, and behavioral issues. Affected individuals may have feeding difficulties (particularly in infancy), skeletal anomalies (brachydactyly, large anterior fontanelle with delayed closure, scoliosis), hearing loss (conductive, mixed, and sensorineural), seizure disorder, and brain malformations. There is significant variability in the clinical findings, even between affected members of the same family.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/66317">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_65085"><div><strong>Velocardiofacial syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>65085</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0220704</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Individuals with 22q11.2 deletion syndrome (22q11.2DS) can present with a wide range of features that are highly variable, even within families. The major clinical manifestations of 22q11.2DS include congenital heart disease, particularly conotruncal malformations (ventricular septal defect, tetralogy of Fallot, interrupted aortic arch, and truncus arteriosus), palatal abnormalities (velopharyngeal incompetence, submucosal cleft palate, bifid uvula, and cleft palate), immune deficiency, characteristic facial features, and learning difficulties. Hearing loss can be sensorineural and/or conductive. Laryngotracheoesophageal, gastrointestinal, ophthalmologic, central nervous system, skeletal, and genitourinary anomalies also occur. Psychiatric illness and autoimmune disorders are more common in individuals with 22q11.2DS.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/65085">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_113103"><div><strong>Diastrophic dysplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>113103</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0220726</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Diastrophic dysplasia (DTD) is characterized by limb shortening, normal-sized head, hitchhiker thumbs, spinal deformities (scoliosis, exaggerated lumbar lordosis, cervical kyphosis), and contractures of the large joints with deformities and early-onset osteoarthritis. Other typical findings are ulnar deviation of the fingers, gap between the first and second toes, and clubfoot. On occasion, the disease can be lethal at birth, but most affected individuals survive the neonatal period and develop physical limitations with normal intelligence.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/113103">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_65088"><div><strong>Fryns syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>65088</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0220730</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fryns syndrome is characterized by diaphragmatic defects (diaphragmatic hernia, eventration, hypoplasia, or agenesis); characteristic facial appearance (coarse facies, wide-set eyes, a wide and depressed nasal bridge with a broad nasal tip, long philtrum, low-set and anomalous ears, tented vermilion of the upper lip, wide mouth, and a small jaw); short distal phalanges of the fingers and toes (the nails may also be small); pulmonary hypoplasia; and associated anomalies (polyhydramnios, cloudy corneas and/or microphthalmia, orofacial clefting, renal dysplasia / renal cortical cysts, and/or malformations involving the brain, cardiovascular system, gastrointestinal system, and/or genitalia). Survival beyond the neonatal period is rare. Data on postnatal growth and psychomotor development are limited; however, severe developmental delay and intellectual disability are common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/65088">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_65095"><div><strong>Craniofrontonasal syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>65095</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0220767</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Craniofrontonasal syndrome is an X-linked developmental disorder that shows paradoxically greater severity in heterozygous females than in hemizygous males. Females have frontonasal dysplasia, craniofacial asymmetry, craniosynostosis, bifid nasal tip, grooved nails, wiry hair, and abnormalities of the thoracic skeleton, whereas males typically show only hypertelorism (Twigg et al., 2004; Wieland et al., 2004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/65095">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_113135"><div><strong>Histidinemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>113135</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0220992</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Histidinemia is a metabolic disorder characterized by increased levels of histidine in blood, urine, and cerebrospinal fluid, and decreased levels of the metabolite urocanic acid in blood, urine, and skin cells. Although histidinemia was originally associated with mental retardation and speech defects, it is generally considered to be a benign disorder (Levy et al., 2001). However, it is possible that histidinemia may be a risk factor for developmental disorders in certain individuals under specific circumstances, such as perinatal events (Ishikawa, 1987).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/113135">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_113137"><div><strong>Hypothalamic hypothyroidism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>113137</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0220998</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A type of hypothyroidism that results from a defect in thyrotropin-releasing hormone activity.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/113137">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_66358"><div><strong>Abortive cerebellar ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>66358</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0221061</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">'Behr syndrome' is a clinical term that refers to the constellation of early-onset optic atrophy accompanied by neurologic features, including ataxia, pyramidal signs, spasticity, and mental retardation (Behr, 1909; Thomas et al., 1984).&#13; Patients with mutations in genes other than OPA1 can present with clinical features reminiscent of Behr syndrome. Mutations in one of these genes, OPA3 (606580), result in type III 3-methylglutaconic aciduria (MGCA3; 258501). Lerman-Sagie (1995) noted that the abnormal urinary pattern in MGCA3 may not be picked up by routine organic acid analysis, suggesting that early reports of Behr syndrome with normal metabolic features may actually have been 3-methylglutaconic aciduria type III.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/66358">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_116041"><div><strong>Cholestanol storage disease</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>116041</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0238052</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebrotendinous xanthomatosis (CTX) is a lipid storage disease characterized by infantile-onset diarrhea, childhood-onset cataract, adolescent- to young adult-onset tendon xanthomas, and adult-onset progressive neurologic dysfunction (dementia, psychiatric disturbances, pyramidal and/or cerebellar signs, dystonia, atypical parkinsonism, peripheral neuropathy, and seizures). Chronic diarrhea from infancy and/or neonatal cholestasis may be the earliest clinical manifestation. In approximately 75% of affected individuals, cataracts are the first finding, often appearing in the first decade of life. Xanthomas appear in the second or third decade; they occur on the Achilles tendon, the extensor tendons of the elbow and hand, the patellar tendon, and the neck tendons. Xanthomas have been reported in the lung, bones, and central nervous system. Some individuals show cognitive impairment from early infancy, whereas the majority have normal or only slightly impaired intellectual function until puberty; dementia with slow deterioration in intellectual abilities occurs in the third decade in more than 50% of individuals. Neuropsychiatric symptoms such as behavioral changes, hallucinations, agitation, aggression, depression, and suicide attempts may be prominent. Pyramidal signs (i.e., spasticity) and/or cerebellar signs almost invariably become evident between ages 20 and 30 years. The biochemical abnormalities that distinguish CTX from other conditions with xanthomas include high plasma and tissue cholestanol concentration, normal-to-low plasma cholesterol concentration, decreased chenodeoxycholic acid (CDCA), increased concentration of bile alcohols and their glyconjugates, and increased concentrations of cholestanol and apolipoprotein B in cerebrospinal fluid.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/116041">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_68663"><div><strong>Mucolipidosis type IV</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>68663</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0238286</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mucolipidosis IV (MLIV) is an ultra-rare lysosomal storage disorder characterized by severe psychomotor delay, progressive visual impairment, and achlorhydria. Individuals with MLIV typically present by the end of the first year of life with delayed developmental milestones (due to a developmental brain abnormality) and impaired vision (resulting from a combination of corneal clouding and retinal degeneration). By adolescence, all individuals with MLIV have severe visual impairment. A neurodegenerative component of MLIV has become more widely appreciated, with the majority of individuals demonstrating progressive spastic quadriparesis and loss of psychomotor skills starting in the second decade of life. About 5% of individuals have atypical MLIV, manifesting with less severe psychomotor impairment, but still exhibiting progressive retinal degeneration and achlorhydria.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/68663">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_66078"><div><strong>Treacher Collins syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>66078</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0242387</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Treacher Collins syndrome (TCS) is characterized by lower eyelid abnormalities, malar hypoplasia, downslanted palpebral fissures, and micro- or retrognathia due to symmetric hypoplasia of the zygomatic bones, maxilla, and mandible. External ear anomalies include absent, small, malformed, and/or posteriorly rotated ears and atresia or stenosis of the external auditory canals. About 40%-50% of individuals have conductive hearing loss attributed most commonly to malformation of the ossicles and hypoplasia of the middle ear cavities. Inner ear structures tend to be normal. Significant respiratory and feeding difficulties can be present in infancy. Other, less common abnormalities include cleft palate and unilateral or bilateral choanal stenosis or atresia. Typically, intellect is normal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/66078">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75520"><div><strong>Keratosis pilaris atrophicans</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75520</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0263428</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Keratosis pilaris atrophicans (KPA) represents a group of rare genodermatoses characterized by perifollicular keratosis and inflammation that progresses to atrophy and scarring of the facial skin. Keratosis pilaris of extensor surfaces of limbs is a common associated finding. Affected individuals may present with features that overlap between 3 subtypes, keratosis pilaris atrophicans faciei (KPAF), keratosis follicularis spinulosa decalvans (KFSD), and atrophoderma vermiculata (AVA; see 209700) (summary by Klar et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75520">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75550"><div><strong>DE SANCTIS-CACCHIONE SYNDROME</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75550</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265201</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare autosomal recessive inherited syndrome. It is characterized by xeroderma pigmentosum, mental retardation, dwarfism, hypogonadism, and neurologic abnormalities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75550">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120511"><div><strong>Weaver syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120511</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265210</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">EZH2-related overgrowth is a variable overgrowth syndrome characterized by tall stature, macrocephaly, variable intellect (ranging from normal intellect to severe intellectual disability), characteristic facial appearance, and a range of associated clinical features including advanced bone age, poor coordination, soft, doughy skin, camptodactyly of the fingers and/or toes, umbilical hernia, abnormal tone, and hoarse, low cry in infancy. Brain MRI has identified abnormalities in a few individuals with EZH2-related overgrowth. Neuroblastoma occurs at a slightly increased frequency in individuals with a heterozygous EZH2 pathogenic variant, but data are insufficient to determine absolute risk. There is currently no evidence that additional malignancies (including hematologic malignancies) occur with increased frequency, though a few have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120511">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75551"><div><strong>Marshall-Smith syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75551</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265211</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The Marshall-Smith syndrome (MRSHSS) is a malformation syndrome characterized by accelerated skeletal maturation, relative failure to thrive, respiratory difficulties, mental retardation, and unusual facies, including prominent forehead, shallow orbits, blue sclerae, depressed nasal bridge, and micrognathia (Adam et al., 2005).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75551">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75552"><div><strong>X-linked hydrocephalus syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75552</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265216</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">L1 syndrome involves a phenotypic spectrum ranging from severe to mild and includes three clinical phenotypes: X-linked hydrocephalus with stenosis of the aqueduct of Sylvius (HSAS). MASA (mental retardation [intellectual disability], aphasia [delayed speech], spastic paraplegia [shuffling gait], adducted thumbs) syndrome including X-linked complicated hereditary spastic paraplegia type 1. X-linked complicated corpus callosum agenesis. Males with HSAS are born with severe hydrocephalus, adducted thumbs, and spasticity; intellectual disability is severe. In less severely affected males, hydrocephalus may be subclinically present and documented only because of developmental delay; intellectual disability ranges from mild (IQ: 50-70) to moderate (IQ: 30-50). It is important to note that all phenotypes can be observed in affected individuals within the same family.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75552">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78538"><div><strong>Miller Dieker syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78538</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265219</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PAFAH1B1-related lissencephaly / subcortical band heterotopia (SBH) comprises a spectrum of severity. Affected newborns typically have mild-to-moderate hypotonia, feeding difficulties, and poor head control. During the first years, neurologic examination typically demonstrates poor visual tracking and response to sounds, axial hypotonia, and mild distal spasticity that can transition over time to more severe spasticity. Seizures occur in more than 90% of individuals with lissencephaly and often include infantile spasms. Seizures are often drug resistant, but even with good seizure control, the best developmental level achieved (excluding the few individuals with partial lissencephaly) is the equivalent of about age three to five months. In individuals with PAFAH1B1-related lissencephaly/SBH, developmental delay ranges from mild to severe. Other findings in PAFAH1B1-related lissencephaly/SBH include feeding issues and aspiration (which may result in need for gastrostomy tube placement), progressive microcephaly, and occasional developmental regression.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78538">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120514"><div><strong>Pallister-Hall syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120514</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265220</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GLI3-related Pallister-Hall syndrome (GLI3-PHS) is characterized by a spectrum of anomalies ranging from polydactyly, asymptomatic bifid epiglottis, and hypothalamic hamartoma at the mild end to laryngotracheal cleft with neonatal lethality at the severe end. Individuals with mild GLI3-PHS may be incorrectly diagnosed as having isolated postaxial polydactyly type A. Individuals with GLI3-PHS can have pituitary insufficiency and may die as neonates from undiagnosed and untreated adrenal insufficiency.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120514">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78539"><div><strong>Cohen syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78539</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265223</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Cohen syndrome is characterized by failure to thrive in infancy and childhood; truncal obesity in the teen years; early-onset hypotonia and developmental delays; microcephaly developing during the first year of life; moderate to profound psychomotor retardation; progressive retinochoroidal dystrophy and high myopia; neutropenia in many with recurrent infections and aphthous ulcers in some; a cheerful disposition; joint hypermobility; and characteristic facial features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78539">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120517"><div><strong>Schinzel-Giedion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120517</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265227</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Schinzel-Giedion syndrome (SGS), an ultra-rare multisystem disorder caused by gain-of-function pathogenic variants in a SETBP1 mutational hot spot, is characterized by global neurodevelopmental impairment leading to moderate-to-profound intellectual disability, epilepsy (often refractory to treatment), hypotonia, spasticity, dysautonomia, hearing loss, and cerebral visual impairment. Other findings can include poor weight gain often associated with gastroesophageal reflux disease, chronic vomiting, constipation, gastroparesis, and/or feeding intolerance. Structural malformations can involve the heart, skeleton, kidney and urinary tract, genitalia, and brain. Anomalies of the liver, spleen, and/or pancreas are less common. Other features may include neuroepithelial neoplasia, severely disrupted sleep, choanal stenosis, inguinal hernia, sensitive skin, and increased risk of infection. To date, more than 50 individuals have been reported with molecularly confirmed classic SGS. Atypical SGS, reported in five individuals to date, is caused by pathogenic SETBP1 variants in proximity to – but not within – the mutational hot spot. The broad spectrum of clinical features of variable severity partially overlaps with classic SGS; however, this spectrum does not include risk for neuroepithelial neoplasia to date.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120517">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120519"><div><strong>Nager syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120519</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265245</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nager syndrome is the prototype for a group of disorders collectively referred to as the acrofacial dysostoses (AFDs), which are characterized by malformation of the craniofacial skeleton and the limbs. The major facial features of Nager syndrome include downslanted palpebral fissures, midface retrusion, and micrognathia, the latter of which often requires the placement of a tracheostomy in early childhood. Limb defects typically involve the anterior (radial) elements of the upper limbs and manifest as small or absent thumbs, triphalangeal thumbs, radial hypoplasia or aplasia, and radioulnar synostosis. Phocomelia of the upper limbs and, occasionally, lower-limb defects have also been reported. The presence of anterior upper-limb defects and the typical lack of lower-limb involvement distinguishes Nager syndrome from Miller syndrome (263750), another rare AFD; however, distinguishing Nager syndrome from other AFDs, including Miller syndrome, can be challenging (summary by Bernier et al., 2012).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120519">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120520"><div><strong>Ruvalcaba syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120520</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265248</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ruvalcaba syndrome is an extremely rare malformation syndrome, described in less than 10 patients to date, characterized by microcephaly with characteristic facies (downslanting parpebral fissures, microstomia, beaked nose, narrow maxilla), very short stature, narrow thoracic cage with pectus carinatum, hypoplastic genitalia and skeletal anomalies (i.e. characteristic brachydactyly and osteochondritis of the spine) as well as intellectual and developmental delay.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120520">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82695"><div><strong>Mietens syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82695</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265249</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mietens syndrome is a very rare syndrome consisting of corneal opacity, nystagmus, strabismus, flexion contracture of the elbows with dislocation of the head of the radius and abnormally short ulnae and radii.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82695">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75556"><div><strong>Coffin-Lowry syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75556</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265252</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The phenotypic spectrum associated with RPS6KA3 pathogenic variants is a continuum. Coffin-Lowry syndrome (CLS) classically manifests in males with developmental delay, intellectual disability, neurologic manifestations (hypotonia, stimulus-induced drop attacks, spastic paraparesis, and seizures), musculoskeletal manifestations (kyphoscoliosis and pectus deformity), and characteristic craniofacial and hand findings. Dental issues, sensorineural hearing loss, and obstructive sleep apnea also occur. The milder end of the continuum in males includes neurodevelopmental disabilities with or without less pronounced multisystem involvement. Heterozygous females often exhibit clinical manifestations that can be consistent with clinically defined CLS but are typically less severe than those seen in affected males. Developmental delay and intellectual disability comprise the core phenotypic findings, and quality of life and prognosis are variably affected by the presence and severity of neurologic and musculoskeletal involvement.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75556">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75557"><div><strong>Grebe syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75557</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265260</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Acromesomelic dysplasia-2A (AMD2A), or Grebe chondrodysplasia, is an autosomal recessive disorder characterized by severe abnormality of the limbs and limb joints. The severity of limb shortening progresses in a proximal-distal gradient, with the hands and feet being most affected. The fingers and toes lack articulation and appear as skin appendages. In contrast, axial skeletal structures and the craniofacial skeleton are not affected. Heterozygous individuals are of average stature and have mild skeletal abnormalities (summary by Thomas et al., 1997). Because Grebe syndrome exhibits increasing severity in a proximal-distal gradient, it is classified as a form of acromesomelic dysplasia (Costa et al., 1998).&#13; For discussion of the genetic heterogeneity of acromesomelic dysplasia, see AMD1 (602875).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75557">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82696"><div><strong>Autosomal recessive multiple pterygium syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82696</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265261</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Multiple pterygium syndromes comprise a group of multiple congenital anomaly disorders characterized by webbing (pterygia) of the neck, elbows, and/or knees and joint contractures (arthrogryposis) (Morgan et al., 2006). The multiple pterygium syndromes are phenotypically and genetically heterogeneous but are traditionally divided into prenatally lethal (253290) and nonlethal (Escobar) types.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82696">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120523"><div><strong>Femoral hypoplasia - unusual facies syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120523</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265263</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Femoral-facial syndrome (FFS), also known as femoral hypoplasia-unusual facies syndrome (FHUFS), is a rare and sporadic multiple congenital anomaly syndrome comprising bilateral femoral hypoplasia and characteristic facial features, such as long philtrum, thin upper lip, micrognathia with or without cleft palate, upward-slanting palpebral fissures, and a short nose with broad tip. Other features, such as renal anomalies, are more variable (summary by Nowaczyk et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120523">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120527"><div><strong>Dyggve-Melchior-Clausen syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120527</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265286</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dyggve-Melchior-Clausen disease (DMC) is an autosomal recessive disorder characterized by progressive spondyloepimetaphyseal dysplasia and impaired intellectual development. Short-trunk dwarfism and microcephaly are present, and specific radiologic appearances most likely reflect abnormalities of the growth plates, including platyspondyly with notched end plates, metaphyseal irregularities, laterally displaced capital femoral epiphyses, and small iliac wings with lacy iliac crests (summary by El Ghouzzi et al., 2003).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120527">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120532"><div><strong>Baller-Gerold syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120532</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265308</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Baller-Gerold syndrome (BGS) can be suspected at birth in an infant with craniosynostosis and upper limb abnormality. The coronal suture is most commonly affected; the metopic, lambdoid, and sagittal sutures may also be involved alone or in combination. Upper limb abnormality can include a combination of thumb hypo- or aplasia and radial hypo- or aplasia and may be asymmetric. Malformation or absence of carpal or metacarpal bones has also been described. Skin lesions may appear anytime within the first few years after birth, typically beginning with erythema of the face and extremities and evolving into poikiloderma. Slow growth is apparent in infancy with eventual height and length typically at 4 SD below the mean.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120532">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120537"><div><strong>Cerebro-costo-mandibular syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120537</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265342</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebrocostomandibular syndrome (CCMS) is a rare autosomal dominant disorder characterized by branchial arch-derivative and thoracic malformations. A key craniofacial characteristic is micrognathia, often associated with cleft palate and feeding and airway difficulties. Patients with CCMS have a narrow chest and striking posterior rib gaps which distinguish this condition (summary by Tooley et al., 2016).&#13; See CDG2G (611209) for a cerebrocostomandibular-like syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120537">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75567"><div><strong>CHARGE syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75567</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0265354</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CHD7 disorder encompasses the entire phenotypic spectrum of heterozygous CHD7 pathogenic variants that includes CHARGE syndrome as well as subsets of features that comprise the CHARGE syndrome phenotype. The mnemonic CHARGE syndrome, introduced in the premolecular era, stands for coloboma, heart defect, choanal atresia, retarded growth and development, genital hypoplasia, ear anomalies (including deafness). Following the identification of the genetic cause of CHD7 disorder, the phenotypic spectrum expanded to include cranial nerve anomalies, vestibular defects, cleft lip and/or palate, hypothyroidism, tracheoesophageal anomalies, brain anomalies, seizures, and renal anomalies. Life expectancy highly depends on the severity of manifestations; mortality can be high in the first few years when severe birth defects (particularly complex heart defects) are present and often complicated by airway and feeding issues. In childhood, adolescence, and adulthood, decreased life expectancy is likely related to a combination of residual heart defects, infections, aspiration or choking, respiratory issues including obstructive and central apnea, and possibly seizures. Despite these complications, the life expectancy for many individuals can be normal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75567">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82728"><div><strong>Pili torti-deafness syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82728</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0266006</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bjornstad syndrome (BJS) is an autosomal recessive disorder characterized by sensorineural hearing loss and pili torti. The hearing loss is congenital and of variable severity. Pili torti (twisted hairs), a condition in which the hair shafts are flattened at irregular intervals and twisted 180 degrees from the normal axis, making the hair very brittle, is usually recognized early in childhood (Selvaag, 2000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82728">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78617"><div><strong>Holoprosencephaly 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78617</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0266667</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Holoprosencephaly (HPE) is the most common structural malformation of the human forebrain and occurs after failed or abbreviated midline cleavage of the developing brain during the third and fourth weeks of gestation. HPE occurs in up to 1 in 250 gestations, but only 1 in 8,000 live births (Lacbawan et al., 2009). Classically, 3 degrees of severity defined by the extent of brain malformation have been described. In the most severe form, 'alobar HPE,' there is a single ventricle and no interhemispheric fissure. The olfactory bulbs and tracts and the corpus callosum are typically absent. In 'semilobar HPE,' the most common type of HPE in neonates who survive, there is partial cortical separation with rudimentary cerebral hemispheres and a single ventricle. In 'lobar HPE,' the ventricles are separated, but there is incomplete frontal cortical separation (Corsello et al., 1990). An additional milder form, called 'middle interhemispheric variant' (MIHV) has also been delineated, in which the posterior frontal and parietal lobes are incompletely separated and the corpus callosum may be hypoplastic (Lacbawan et al., 2009). Finally, microforms of HPE include a single maxillary median incisor or hypotelorism without the typical brain malformations (summary by Mercier et al., 2011). Cohen (2001) discussed problems in the definition of holoprosencephaly, which can be viewed from 2 different perspectives: anatomic (fixed) and genetic (broad). When the main interest is description, the anatomic perspective is appropriate. In genetic perspective, a fixed definition of holoprosencephaly is not appropriate because the same mutational cause may result in either holoprosencephaly or some microform of holoprosencephaly. Cohen (2001) concluded that both fixed and broad definitions are equally valid and depend on context.&#13; Munke (1989) provided an extensive review of the etiology and pathogenesis of holoprosencephaly, emphasizing heterogeneity.&#13; See also schizencephaly (269160), which may be part of the phenotypic spectrum of HPE.&#13; Genetic Heterogeneity of Holoprosencephaly&#13; Several loci for holoprosencephaly have been mapped to specific chromosomal sites and the molecular defects in some cases of HPE have been identified. Holoprosencephaly-1 (HPE1) maps to chromosome 21q22. See also HPE2 (157170), caused by mutation in the SIX3 gene (603714) on 2p21; HPE3 (142945), caused by mutation in the SHH gene (600725) on 7q36; HPE4 (142946), caused by mutation in the TGIF gene (602630) on 18p11; HPE5 (609637), caused by mutation in the ZIC2 gene (603073) on 13q32; HPE6 (605934), mapped to 2q37; HPE7 (610828), caused by mutation in the PTCH1 gene (601309) on 9q22; HPE8 (609408), mapped to 14q13; HPE9 (610829), caused by mutation in the GLI2 gene (165230) on 2q14; HPE10 (612530), mapped to 1q41-q42; HPE11 (614226), caused by mutation in the CDON gene (608707) on 11q24; HPE12 (618500), caused by mutation in the CNOT1 gene (604917) on 16q21; HPE13 (301043), caused by mutation in the STAG2 gene (300826) on Xq25; and HPE14 (619895), caused by mutation in the PLCH1 gene (612835) on 3q25.&#13; Wallis and Muenke (2000) gave an overview of mutations in holoprosencephaly. They indicated that at least 12 different loci had been associated with HPE.&#13; Mutations in genes involved in the multiprotein cohesin complex, including STAG2, have been shown to be involved in midline brain defects such as HPE. Mutations in some of those genes cause Cornelia de Lange syndrome (CDLS; see 122470), and some patients with severe forms of CDLS may have midline brain defects. See, for example, CDLS2 (300590), CDLS3 (610759), and CDLS4 (614701).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78617">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75653"><div><strong>Purine-nucleoside phosphorylase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75653</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268125</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Purine nucleoside phosphorylase deficiency is a rare autosomal recessive immunodeficiency disorder characterized mainly by decreased T-cell function. Some patients also have neurologic impairment (review by Aust et al., 1992).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75653">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78641"><div><strong>Adenylosuccinate lyase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78641</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268126</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Adenylosuccinase deficiency is an autosomal recessive inborn error of metabolism caused by an enzymatic defect in de novo purine synthesis (DNPS) pathway. ADSL deficiency leads to the accumulation of toxic intermediates, including succinyladenosine (S-Ado) and succinylaminoimidazole carboxamide riboside (SAICAr) in body fluids. There are 3 major phenotypic forms of the disorder that correlate with different values of the S-Ado and SAICAr concentration ratios (S-Ado/SAICAr) in the cerebrospinal fluid. These include the most severe fatal neonatal encephalopathy (S-Ado/SAICAr ratio less than 1); childhood form (type I) with severe psychomotor retardation (S-Ado/SAICAr ratio close to 1), and a milder form (type II) with psychomotor retardation or hypotonia (S-Ado/SAICAr ratio greater than 2) (summary by Baresova et al., 2012).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78641">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82775"><div><strong>Xeroderma pigmentosum group A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82775</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268135</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Xeroderma pigmentosum (XP) is characterized by: Acute sun sensitivity (severe sunburn with blistering, persistent erythema on minimal sun exposure) with marked freckle-like pigmentation of the face before age two years; Sunlight-induced ocular involvement (photophobia, severe keratitis, atrophy of the skin of the lids, ocular surface neoplasms); Greatly increased risk of sunlight-induced cutaneous neoplasms (basal cell carcinoma, squamous cell carcinoma, melanoma) within the first decade of life. Approximately 25% of affected individuals have neurologic manifestations (acquired microcephaly, diminished or absent deep tendon stretch reflexes, progressive sensorineural hearing loss, progressive cognitive impairment, and ataxia). The most common causes of death are skin cancer, neurologic degeneration, and internal cancer. The median age at death in persons with XP with neurodegeneration (29 years) was found to be younger than that in persons with XP without neurodegeneration (37 years).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82775">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78643"><div><strong>Xeroderma pigmentosum group B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78643</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268136</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Xeroderma pigmentosum (XP) is characterized by: Acute sun sensitivity (severe sunburn with blistering, persistent erythema on minimal sun exposure) with marked freckle-like pigmentation of the face before age two years; Sunlight-induced ocular involvement (photophobia, severe keratitis, atrophy of the skin of the lids, ocular surface neoplasms); Greatly increased risk of sunlight-induced cutaneous neoplasms (basal cell carcinoma, squamous cell carcinoma, melanoma) within the first decade of life. Approximately 25% of affected individuals have neurologic manifestations (acquired microcephaly, diminished or absent deep tendon stretch reflexes, progressive sensorineural hearing loss, progressive cognitive impairment, and ataxia). The most common causes of death are skin cancer, neurologic degeneration, and internal cancer. The median age at death in persons with XP with neurodegeneration (29 years) was found to be younger than that in persons with XP without neurodegeneration (37 years).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78643">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75656"><div><strong>Xeroderma pigmentosum, group D</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75656</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268138</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Xeroderma pigmentosum (XP) is characterized by: Acute sun sensitivity (severe sunburn with blistering, persistent erythema on minimal sun exposure) with marked freckle-like pigmentation of the face before age two years; Sunlight-induced ocular involvement (photophobia, severe keratitis, atrophy of the skin of the lids, ocular surface neoplasms); Greatly increased risk of sunlight-induced cutaneous neoplasms (basal cell carcinoma, squamous cell carcinoma, melanoma) within the first decade of life. Approximately 25% of affected individuals have neurologic manifestations (acquired microcephaly, diminished or absent deep tendon stretch reflexes, progressive sensorineural hearing loss, progressive cognitive impairment, and ataxia). The most common causes of death are skin cancer, neurologic degeneration, and internal cancer. The median age at death in persons with XP with neurodegeneration (29 years) was found to be younger than that in persons with XP without neurodegeneration (37 years).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75656">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120612"><div><strong>Xeroderma pigmentosum, group F</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120612</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268140</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Xeroderma pigmentosum (XP) is characterized by: Acute sun sensitivity (severe sunburn with blistering, persistent erythema on minimal sun exposure) with marked freckle-like pigmentation of the face before age two years; Sunlight-induced ocular involvement (photophobia, severe keratitis, atrophy of the skin of the lids, ocular surface neoplasms); Greatly increased risk of sunlight-induced cutaneous neoplasms (basal cell carcinoma, squamous cell carcinoma, melanoma) within the first decade of life. Approximately 25% of affected individuals have neurologic manifestations (acquired microcephaly, diminished or absent deep tendon stretch reflexes, progressive sensorineural hearing loss, progressive cognitive impairment, and ataxia). The most common causes of death are skin cancer, neurologic degeneration, and internal cancer. The median age at death in persons with XP with neurodegeneration (29 years) was found to be younger than that in persons with XP without neurodegeneration (37 years).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120612">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82777"><div><strong>Deficiency of UDPglucose-hexose-1-phosphate uridylyltransferase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82777</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268151</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The term "galactosemia" refers to disorders of galactose metabolism that include classic galactosemia, clinical variant galactosemia, and biochemical variant galactosemia (not covered in this chapter). This GeneReview focuses on: Classic galactosemia, which can result in life-threatening complications including feeding problems, failure to thrive, hepatocellular damage, bleeding, and E coli sepsis in untreated infants. If a lactose-restricted diet is provided during the first ten days of life, the neonatal signs usually quickly resolve and the complications of liver failure, sepsis, and neonatal death are prevented; however, despite adequate treatment from an early age, children with classic galactosemia remain at increased risk for developmental delays, speech problems (termed childhood apraxia of speech and dysarthria), and abnormalities of motor function. Almost all females with classic galactosemia manifest hypergonadatropic hypogonadism or premature ovarian insufficiency (POI). Clinical variant galactosemia, which can result in life-threatening complications including feeding problems, failure to thrive, hepatocellular damage including cirrhosis, and bleeding in untreated infants. This is exemplified by the disease that occurs in African Americans and native Africans in South Africa. Persons with clinical variant galactosemia may be missed with newborn screening as the hypergalactosemia is not as marked as in classic galactosemia and breath testing is normal. If a lactose-restricted diet is provided during the first ten days of life, the severe acute neonatal complications are usually prevented. African Americans with clinical variant galactosemia and adequate early treatment do not appear to be at risk for long-term complications, including POI.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82777">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75661"><div><strong>Deficiency of cytochrome-b5 reductase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75661</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268193</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Methemoglobinemia due to NADH-cytochrome b5 reductase deficiency is an autosomal recessive disorder characterized clinically by decreased oxygen carrying capacity of the blood, with resultant cyanosis and hypoxia (review by Percy and Lappin, 2008).&#13; There are 2 types of methemoglobin reductase deficiency. In type I, the defect affects the soluble form of the enzyme, is restricted to red blood cells, and causes well-tolerated methemoglobinemia. In type II, the defect affects both the soluble and microsomal forms of the enzyme and is thus generalized, affecting red cells, leukocytes, and all body tissues. Type II methemoglobinemia is associated with mental deficiency and other neurologic symptoms. The neurologic symptoms may be related to the major role played by the cytochrome b5 system in the desaturation of fatty acids (Vives-Corrons et al., 1978; Kaplan et al., 1979).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75661">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78649"><div><strong>Aspartylglucosaminuria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78649</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268225</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Aspartylglucosaminuria is a lysosomal storage disorder characterized by developmental delay, intellectual disability, behavioral manifestations (hyperactivity in young children, anxiety and restlessness in adolescence, and apathy in adulthood), recurrent infections, musculoskeletal features, and characteristic craniofacial features (prominent supraorbital ridges, hypertelorism, periorbital fullness, short nose with broad nasal bridge, thick vermilion of the upper and lower lips, and macroglossia) that become more prominent with age. Additional neurologic manifestations can include seizures, poor balance and coordination, and progressive cerebral atrophy in adulthood. Macrocephaly is common. Musculoskeletal features include lordosis, scoliosis, and arthritis in adolescents and young adults; vertebral dysplasia and/or rib cage abnormalities; and progressive muscle wasting, joint contractures, bursitis, and osteoporosis in adulthood. Skin manifestations (facial seborrhea, rosacea, and angiofibromas), gastrointestinal manifestations, neutropenia, and thrombocytopenia occur in some individuals. The clinical manifestations of aspartylglucosaminuria worsen with age, and adults have progressive psychomotor decline.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78649">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82779"><div><strong>Combined deficiency of sialidase AND beta galactosidase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82779</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268233</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Galactosialidosis (GSL) is a lysosomal storage disease associated with a combined deficiency of beta-galactosidase (611458) and neuraminidase (608272), secondary to a defect in protective protein/cathepsin A (PPCA). All patients have clinical manifestations typical of a lysosomal disorder, such as coarse facies, cherry red spots, vertebral changes, foam cells in the bone marrow, and vacuolated lymphocytes. Three phenotypic subtypes are recognized. The early infantile form is associated with fetal hydrops, edema, ascites, visceromegaly, skeletal dysplasia, and early death. The late infantile type is characterized by hepatosplenomegaly, growth retardation, cardiac involvement, and rare occurrence of neurologic signs. The juvenile/adult form is characterized by myoclonus, ataxia, angiokeratoma, mental retardation, neurologic deterioration, absence of visceromegaly, and long survival. The majority of reported patients belong to the juvenile/adult group and are mainly of Japanese origin (summary by d'Azzo et al., 2001).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82779">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82780"><div><strong>Triglyceride storage disease with ichthyosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82780</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268238</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Chanarin-Dorfman syndrome (CDS) is a rare autosomal recessive nonlysosomal inborn error of neutral lipid metabolism. Patients present with a nonbullous erythrodermic form of ichthyosis (NCIE; see 242300) with variable involvement of other organs, such as liver, central nervous system, eyes, and ears. Intracellular triacylglycerol droplets are present in most tissues, and diagnosis can be confirmed by a simple blood smear, in which the characteristic lipid droplets are observed in the cytoplasm of granulocytes (summary by Lefevre et al., 2001).&#13; Another form of neutral lipid storage disease without ichthyosis but with myopathy (NLSDM; 610717) is caused by mutation in the PNPLA2 gene (609059).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82780">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78650"><div><strong>Niemann-Pick disease, type A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78650</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268242</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The phenotype of acid sphingomyelinase deficiency (ASMD) occurs along a continuum. Individuals with the severe early-onset form, infantile neurovisceral ASMD, were historically diagnosed with Niemann-Pick disease type A (NPD-A). The later-onset, chronic visceral form of ASMD is also referred to as Niemann-Pick disease type B (NPD-B). A phenotype with intermediate severity is also known as chronic neurovisceral ASMD (NPD-A/B). Enzyme replacement therapy (ERT) is currently FDA approved for the non-central nervous system manifestations of ASMD, regardless of type. As more affected individuals are treated with ERT for longer periods of time, the natural history of ASMD is likely to change. The most common presenting symptom in untreated NPD-A is hepatosplenomegaly, usually detectable by age three months; over time the liver and spleen become massive in size. Growth failure typically becomes evident by the second year of life. Psychomotor development progresses no further than the 12-month level, after which neurologic deterioration is relentless. This feature may not be amenable to ERT. A classic cherry-red spot of the macula of the retina, which may not be present in the first few months, is eventually present in all affected children, although it is unclear if ERT will have an impact on this. Interstitial lung disease caused by storage of sphingomyelin in pulmonary macrophages results in frequent respiratory infections and often respiratory failure. Most untreated children succumb before the third year of life. NPD-B generally presents later than NPD-A, and the manifestations are less severe. NPD-B is characterized in untreated individuals by progressive hepatosplenomegaly, gradual deterioration in liver and pulmonary function, osteopenia, and atherogenic lipid profile. No central nervous system manifestations occur. Individuals with NPD-A/B have symptoms that are intermediate between NPD-A and NPD-B. The presentation in individuals with NPD-A/B varies greatly, although all are characterized by the presence of some central nervous system manifestations. Survival to adulthood can occur in individuals with NPD-B and NPD-A/B, even when untreated.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78650">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78654"><div><strong>Farber lipogranulomatosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78654</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268255</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The spectrum of ASAH1-related disorders ranges from Farber disease (FD) to spinal muscular atrophy with progressive myoclonic epilepsy (SMA-PME). Classic FD is characterized by onset in the first weeks of life of painful, progressive deformity of the major joints; palpable subcutaneous nodules of joints and mechanical pressure points; and a hoarse cry resulting from granulomas of the larynx and epiglottis. Life expectancy is usually less than two years. In the other less common types of FD, onset, severity, and primary manifestations vary. SMA-PME is characterized by early-childhood-onset progressive lower motor neuron disease manifest typically between ages three and seven years as proximal lower-extremity weakness, followed by progressive myoclonic and atonic seizures, tremulousness/tremor, and sensorineural hearing loss. Myoclonic epilepsy typically begins in late childhood after the onset of weakness and can include jerking of the upper limbs, action myoclonus, myoclonic status, and eyelid myoclonus. Other findings include generalized tremor, and cognitive decline. The time from disease onset to death from respiratory complications is usually five to 15 years.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78654">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75664"><div><strong>Multiple sulfatase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75664</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268263</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Initial symptoms of multiple sulfatase deficiency (MSD) can develop from infancy through early childhood, and presentation is widely variable. Some individuals display the multisystemic features characteristic of mucopolysaccharidosis disorders (e.g., developmental regression, organomegaly, skeletal deformities) while other individuals present primarily with neurologic regression (associated with leukodystrophy). Based on age of onset, rate of progression, and disease severity, several different clinical subtypes of MSD have been described: Neonatal MSD is the most severe with presentation in the prenatal period or at birth with rapid progression and death occurring within the first two years of life. Infantile MSD is the most common variant and may be characterized as attenuated (slower clinical course with cognitive disability and neurodegeneration identified in the 2nd year of life) or severe (loss of the majority of developmental milestones by age 5 years). Juvenile MSD is the rarest subtype with later onset of symptoms and subacute clinical presentation. Many of the features found in MSD are progressive, including neurologic deterioration, heart disease, hearing loss, and airway compromise.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75664">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75665"><div><strong>Infantile GM1 gangliosidosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75665</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268271</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GLB1-related disorders comprise two phenotypically distinct lysosomal storage disorders: GM1 gangliosidosis and mucopolysaccharidosis type IVB (MPS IVB). The phenotype of GM1 gangliosidosis constitutes a spectrum ranging from severe (infantile) to intermediate (late-infantile and juvenile) to mild (chronic/adult). Type I (infantile) GM1 gangliosidosis begins before age 12 months. Prenatal manifestations may include nonimmune hydrops fetalis, intrauterine growth restriction, and placental vacuolization; congenital dermal melanocytosis (Mongolian spots) may be observed. Macular cherry-red spot is detected on eye exam. Progressive central nervous system dysfunction leads to spasticity and rapid regression; blindness, deafness, decerebrate rigidity, seizures, feeding difficulties, and oral secretions are observed. Life expectancy is two to three years. Type II can be subdivided into the late-infantile (onset age 1-3 years) and juvenile (onset age 3-10 years) phenotypes. Central nervous system dysfunction manifests as progressive cognitive, motor, and speech decline as measured by psychometric testing. There may be mild corneal clouding, hepatosplenomegaly, and/or cardiomyopathy; the typical course is characterized by progressive neurologic decline, progressive skeletal disease in some individuals (including kyphosis and avascular necrosis of the femoral heads), and progressive feeding difficulties leading to aspiration risk. Type III begins in late childhood to the third decade with generalized dystonia leading to unsteady gait and speech disturbance followed by extrapyramidal signs including akinetic-rigid parkinsonism. Cardiomyopathy develops in some and skeletal involvement occurs in most. Intellectual impairment is common late in the disease with prognosis directly related to the degree of neurologic impairment. MPS IVB is characterized by skeletal dysplasia with specific findings of axial and appendicular dysostosis multiplex, short stature (below 15th centile in adults), kyphoscoliosis, coxa/genu valga, joint laxity, platyspondyly, and odontoid hypoplasia. First signs and symptoms may be apparent at birth. Bony involvement is progressive, with more than 84% of adults requiring ambulation aids; life span does not appear to be limited. Corneal clouding is detected in some individuals and cardiac valvular disease may develop.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75665">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82795"><div><strong>Cutis laxa with osteodystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82795</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268355</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ATP6V0A2-related cutis laxa is characterized by generalized cutis laxa, findings associated with generalized connective tissue disorder, developmental delays, and a variety of neurologic findings including abnormality on brain MRI. At birth, hypotonia, overfolded skin, and distinctive facial features are present and enlarged fontanelles are often observed. During childhood, the characteristic facial features and thick or coarse hair may become quite pronounced. The skin findings decrease with age, although easy bruising and Ehlers-Danlos-like scars have been described in some. In most (not all) affected individuals, cortical and cerebellar malformations are observed on brain MRI. Nearly all affected individuals have developmental delays, seizures, and neurologic regression.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82795">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82803"><div><strong>Inborn glycerol kinase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82803</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268418</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NR0B1-related adrenal hypoplasia congenita includes both X-linked adrenal hypoplasia congenita (X-linked AHC) and Xp21 deletion (previously called complex glycerol kinase deficiency). X-linked AHC is characterized by primary adrenal insufficiency and/or hypogonadotropic hypogonadism (HH). Adrenal insufficiency is acute infantile onset (average age 3 weeks) in approximately 60% of affected males and childhood onset (ages 1-9 years) in approximately 40%. HH typically manifests in a male with adrenal insufficiency as delayed puberty (i.e., onset age &gt;14 years) and less commonly as arrested puberty at about Tanner Stage 3. Rarely, X-linked AHC manifests initially in early adulthood as delayed-onset adrenal insufficiency, partial HH, and/or infertility. Heterozygous females very occasionally have manifestations of adrenal insufficiency or hypogonadotropic hypogonadism. Xp21 deletion includes deletion of NR0B1 (causing X-linked AHC) and GK (causing glycerol kinase deficiency), and in some cases deletion of DMD (causing Duchenne muscular dystrophy). Developmental delay has been reported in males with Xp21 deletion when the deletion extends proximally to include DMD or when larger deletions extend distally to include IL1RAPL1 and DMD.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82803">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75682"><div><strong>Dihydropteridine reductase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75682</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268465</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tetrahydrobiopterin deficiency is a rare disorder characterized by a shortage (deficiency) of a molecule called tetrahydrobiopterin or BH4. This condition alters the levels of several substances in the body, including phenylalanine. Phenylalanine is a building block of proteins (an amino acid) that is obtained through the diet. It is found in foods that contain protein and in some artificial sweeteners. High levels of phenylalanine are present from early infancy in people with untreated tetrahydrobiopterin deficiency. This condition also alters the levels of chemicals called neurotransmitters, which transmit signals between nerve cells in the brain.\n\nInfants with tetrahydrobiopterin deficiency appear normal at birth, but medical problems ranging from mild to severe become apparent over time. Signs and symptoms of this condition can include intellectual disability, progressive problems with development, movement disorders, difficulty swallowing, seizures, behavioral problems, and an inability to control body temperature.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75682">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120642"><div><strong>Dopa-responsive dystonia due to sepiapterin reductase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120642</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268468</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The phenotypic spectrum of sepiapterin reductase deficiency (SRD), which ranges from significant motor and cognitive deficits to only minimal findings, has not been completely elucidated. Clinical features in the majority of affected individuals include motor and speech delay, axial hypotonia, dystonia, weakness, and oculogyric crises; symptoms show diurnal fluctuation and sleep benefit. Other common features include parkinsonian signs (tremor, bradykinesia, masked facies, rigidity), limb hypertonia, hyperreflexia, intellectual disability, psychiatric and/or behavioral abnormalities, autonomic dysfunction, and sleep disturbances (hypersomnolence, difficulty initiating or maintaining sleep, and drowsiness). Most affected individuals have nonspecific features in infancy including developmental delays and axial hypotonia; other features develop over time.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120642">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78680"><div><strong>Tryptophanuria with dwarfism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78680</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268473</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78680">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75686"><div><strong>Hooft disease</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75686</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268479</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75686">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75687"><div><strong>Tyrosinemia type II</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75687</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268487</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tyrosinemia type II is characterized by corneal dystrophy, painful palmoplantar hyperkeratosis, and variable intellectual disability. Individuals diagnosed and treated from early infancy may be asymptomatic or have only mild ocular and skin manifestations. Individuals with delayed diagnosis or lack of treatment present with ocular, skin, and variable cognitive manifestations.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75687">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82813"><div><strong>gamma-Glutamyltransferase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82813</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268524</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A disorder that is characterized by increased glutathione concentration in the plasma and urine.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82813">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120645"><div><strong>Proline dehydrogenase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120645</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268529</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Phang et al. (2001) noted that prospective studies of HPI probands identified through newborn screening as well as reports of several families have suggested that it is a metabolic disorder not clearly associated with clinical manifestations. Phang et al. (2001) concluded that HPI is a relatively benign condition in most individuals under most circumstances. However, other reports have suggested that some patients have a severe phenotype with neurologic manifestations, including epilepsy and impaired intellectual development (Jacquet et al., 2003).&#13; Genetic Heterogeneity of Hyperprolinemia&#13; See also hyperprolinemia type II (HYRPRO2; 239510), which is caused by mutation in the gene encoding pyrroline-5-carboxylate dehydrogenase (P5CDH, ALDH4A1; 606811) on chromosome 1p36.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120645">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75691"><div><strong>Hyperhydroxyprolinemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75691</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268531</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hydroxyproline is an imino acid normally present in human plasma. It is derived primarily from endogenous collagen turnover and the breakdown of dietary collagen. The finding of elevated (5- to 10-fold increase from the normal of less than 50 micromoles) serum hydroxyproline is thought to be an inherited defect in the catabolism of hydroxyproline.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75691">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82815"><div><strong>Hyperornithinemia-hyperammonemia-homocitrullinuria syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82815</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268540</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hyperornithinemia-hyperammonemia-homocitrullinuria (HHH) syndrome is a disorder of the urea cycle and ornithine degradation pathway. Clinical manifestations and age of onset vary among individuals even in the same family. Neonatal onset (~8% of affected individuals). Manifestations of hyperammonemia usually begin 24-48 hours after feeding begins and can include lethargy, somnolence, refusal to feed, vomiting, tachypnea with respiratory alkalosis, and/or seizures. Infantile, childhood, and adult onset (~92%). Affected individuals may present with: Chronic neurocognitive deficits (including developmental delay, ataxia, spasticity, learning disabilities, cognitive deficits, and/or unexplained seizures); Acute encephalopathy secondary to hyperammonemic crisis precipitated by a variety of factors; and Chronic liver dysfunction (unexplained elevation of liver transaminases with or without mild coagulopathy, with or without mild hyperammonemia and protein intolerance). Neurologic findings and cognitive abilities can continue to deteriorate despite early metabolic control that prevents hyperammonemia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82815">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75692"><div><strong>Ornithine carbamoyltransferase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75692</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268542</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ornithine transcarbamylase (OTC) deficiency can occur as a severe neonatal-onset disease in males (but rarely in females) and as a post-neonatal-onset (also known as "late-onset" or partial deficiency) disease in males and females. Males with severe neonatal-onset OTC deficiency are asymptomatic at birth but become symptomatic from hyperammonemia in the first week of life, most often on day two to three of life, and are usually catastrophically ill by the time they come to medical attention. After successful treatment of neonatal hyperammonemic coma these infants can easily become hyperammonemic again despite appropriate treatment; they typically require liver transplant to improve quality of life. Males and heterozygous females with post-neonatal-onset (partial) OTC deficiency can present from infancy to later childhood, adolescence, or adulthood. No matter how mild the disease, a hyperammonemic crisis can be precipitated by stressors and become a life-threatening event at any age and in any situation in life. For all individuals with OTC deficiency, typical neuropsychological complications include developmental delay, learning disabilities, intellectual disability, attention-deficit/hyperactivity disorder, and executive function deficits.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75692">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78687"><div><strong>Argininosuccinate lyase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78687</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268547</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Deficiency of argininosuccinate lyase (ASL), the enzyme that cleaves argininosuccinic acid to produce arginine and fumarate in the fourth step of the urea cycle, may present as a severe neonatal-onset form or a late-onset form: The severe neonatal-onset form is characterized by hyperammonemia within the first few days after birth that can manifest as increasing lethargy, somnolence, refusal to feed, vomiting, tachypnea, and respiratory alkalosis. Absence of treatment leads to worsening lethargy, seizures, coma, and even death. In contrast, the manifestations of late-onset form range from episodic hyperammonemia triggered by acute infection or stress to cognitive impairment, behavioral abnormalities, and/or learning disabilities in the absence of any documented episodes of hyperammonemia. Manifestations of ASL deficiency that appear to be unrelated to the severity or duration of hyperammonemic episodes: Neurocognitive deficiencies (attention-deficit/hyperactivity disorder, developmental delay, seizures, and learning disability). Liver disease (hepatitis, cirrhosis). Trichorrhexis nodosa (coarse brittle hair that breaks easily). Systemic hypertension.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78687">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78688"><div><strong>Arginase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78688</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268548</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Arginase deficiency in untreated individuals is characterized by episodic hyperammonemia of variable degree that is infrequently severe enough to be life threatening or to cause death. Most commonly, birth and early childhood are normal. Untreated individuals have slowing of linear growth at age one to three years, followed by development of spasticity, plateauing of cognitive development, and subsequent loss of developmental milestones. If untreated, arginase deficiency usually progresses to severe spasticity, loss of ambulation, complete loss of bowel and bladder control, and severe intellectual disability. Seizures are common and are usually controlled easily. Individuals treated from birth, either as a result of newborn screening or having an affected older sib, appear to have minimal symptoms.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78688">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120650"><div><strong>Hyperlysinuria with hyperammonemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120650</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268555</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120650">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75693"><div><strong>Saccharopinuria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75693</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268556</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Saccharopinuria, also known as hyperlysinemia type II, is an autosomal recessive metabolic condition with few, if any, clinical manifestations. Hyperlysinemia type II and hyperlysinemia type I (238700) both result from deficiency of the bifunctional enzyme AASS (605113) on chromosome 7q31. The AASS gene encodes lysine alpha-ketoglutarate reductase and saccharopine dehydrogenase, which catalyze, respectively, the sequential conversion of lysine to saccharopine and saccharopine to alpha-aminoadipic semialdehyde and glutamate (summary by Tondo et al., 2013). In hyperlysinemia type I, both enzymatic functions of AASS are defective and patients have increased serum lysine and possibly increased saccharopine; in hyperlysinemia type II, most of the first enzymatic function is retained, and patients tend to have isolated saccharopine increase (Cox, 1985; Cox et al., 1986).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75693">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82818"><div><strong>Hyperglycinemia, transient neonatal</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82818</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268560</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82818">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82821"><div><strong>Hyperleucine-isoleucinemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82821</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268574</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82821">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78691"><div><strong>3-methylcrotonyl-CoA carboxylase 1 deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78691</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268600</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">3-Methylcrotonylglycinuria is an autosomal recessive disorder of leucine catabolism. The clinical phenotype is highly variable, ranging from neonatal onset with severe neurologic involvement to asymptomatic adults. There is a characteristic organic aciduria with massive excretion of 3-hydroxyisovaleric acid and 3-methylcrotonylglycine, usually in combination with a severe secondary carnitine deficiency. MCC activity in extracts of cultured fibroblasts of patients is usually less than 2% of control (summary by Baumgartner et al., 2001).&#13; Also see 3-methylcrotonylglycinuria II (MCC2D; 210210), caused by mutation in the beta subunit of 3-methylcrotonyl-CoA carboxylase (MCCC2; 609014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78691">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82823"><div><strong>Glutamate formiminotransferase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82823</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268609</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Glutamate formiminotransferase deficiency is an autosomal recessive disorder and the second most common inborn error of folate metabolism. Features of a severe phenotype include elevated levels of formiminoglutamate (FIGLU) in the urine in response to histidine administration, megaloblastic anemia, and mental retardation. Features of a mild phenotype include high urinary excretion of FIGLU in the absence of histidine administration, mild developmental delay, and no hematologic abnormalities (summary by Hilton et al., 2003).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82823">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75700"><div><strong>Hepatic methionine adenosyltransferase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75700</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268621</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Methionine adenosyltransferase deficiency is an inborn error of metabolism resulting in isolated hypermethioninemia. Most patients have no clinical abnormalities, although some with the autosomal recessive form have have neurologic abnormalities (Mudd et al., 2003; Kim et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75700">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_78693"><div><strong>Familial methionine malabsorption</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>78693</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268622</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/78693">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_124340"><div><strong>Succinate-semialdehyde dehydrogenase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>124340</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268631</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Succinic semialdehyde dehydrogenase (SSADH) deficiency is characterized by a relatively non-progressive encephalopathy typically presenting with hypotonia and delayed acquisition of motor and language developmental milestones in the first two years of life. Common clinical features include an almost universal intellectual disability and adaptive function deficits, as well as epilepsy, autism spectrum disorder, movement disorders (such as ataxia, dystonia, and exertional dyskinesia), sleep disturbances, attention problems, anxiety, and obsessive-compulsive behaviors. Notably, seizures, autism spectrum disorder features, and behavioral problems tend to worsen around the time of late childhood or early adolescence. Affected individuals do not usually have episodic decompensation following metabolic stressors, as is typical of other organic acidemias and metabolic encephalopathies, although some have been diagnosed after having unanticipated difficulty recovering from otherwise ordinary childhood illnesses. Clinical presentation with acute onset of generalized hypotonia and choreiform movement following upper-respiratory tract infection has been observed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/124340">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75703"><div><strong>Homocarnosinosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75703</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268632</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Homocarnosinosis, an elevation of homocarnosine, is a biochemical aberration of unknown significance. Only one such family has been reported (Sjaastad et al., 2018).&#13; Homocarnosinosis was previously thought to be a disorder characterized by marked elevation of homocarnosine in the cerebrospinal fluid along with spastic paraplegia, impaired intellectual development, and retinal pigmentation based on the report of one Norwegian family reported by Sjaastad et al. (1976). Sjaastad et al. (2018) performed genetic analysis postmortem in this family and identified a homozygous mutation in the SPG11 gene (610844). A reevaluation of the clinical symptoms and findings in the family correlated with spastic paraplegia-11 (SPG11; 604360). A study of other patients with SPG11 did not find elevated levels of homocarnosine.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75703">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82825"><div><strong>Histidine transport defect</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82825</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268642</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare disorder of histidine metabolism characterized by histidinuria without histidinemia due to impaired intestinal and renal tubular absorption of histidine. Developmental delay, intellectual disability, seizures, and mild dysmorphic features have been reported in association. There have been no further descriptions in the literature since 1992.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82825">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_75704"><div><strong>Lysinuric protein intolerance</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>75704</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268647</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Lysinuric protein intolerance (LPI) typically presents after an infant is weaned from breast milk or formula; variable findings include recurrent vomiting and episodes of diarrhea, episodes of stupor and coma after a protein-rich meal, poor feeding, aversion to protein-rich food, failure to thrive, hepatosplenomegaly, and muscular hypotonia. Over time, findings include: poor growth, osteoporosis, involvement of the lungs (progressive interstitial changes, pulmonary alveolar proteinosis) and of the kidneys (progressive glomerular and proximal tubular disease), hematologic abnormalities (normochromic or hypochromic anemia, leukopenia, thrombocytopenia, erythroblastophagocytosis in the bone marrow aspirate), and a clinical presentation resembling the hemophagocytic lymphohistiocytosis/macrophagic activation syndrome. Hypercholesterolemia, hypertriglyceridemia, and acute pancreatitis can also be seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/75704">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_124342"><div><strong>Iminoglycinuria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>124342</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0268654</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The imino acids, proline and hydroxyproline, share a renal tubular reabsorptive mechanism with glycine. Iminoglycinuria (IG), a benign inborn error of amino acid transport, is also a normal finding in neonates and infants under 6 months of age (Chesney, 2001). Early studies of families with iminoglycinuria suggested genetic complexity, with homozygotes developing IG and heterozygotes manifesting only hyperglycinuria (HG; 138500) (summary by Broer et al., 2008).&#13; Iminoglycinuria also occurs as part of the generalized amino aciduria of the Fanconi renotubular syndrome (134600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/124342">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82852"><div><strong>Infantile neuroaxonal dystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82852</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0270724</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PLA2G6-associated neurodegeneration (PLAN) comprises a continuum of three phenotypes with overlapping clinical and radiologic features: Infantile neuroaxonal dystrophy (INAD). Atypical neuroaxonal dystrophy (atypical NAD). PLA2G6-related dystonia-parkinsonism. INAD usually begins between ages six months and three years with psychomotor regression or delay, hypotonia, and progressive spastic tetraparesis. Many affected children never learn to walk or lose the ability shortly after attaining it. Strabismus, nystagmus, and optic atrophy are common. Disease progression is rapid, resulting in severe spasticity, progressive cognitive decline, and visual impairment. Many affected children do not survive beyond their first decade. Atypical NAD shows more phenotypic variability than INAD. In general, onset is in early childhood but can be as late as the end of the second decade. The presenting signs may be gait instability, ataxia, or speech delay and autistic features, which are sometimes the only evidence of disease for a year or more. Strabismus, nystagmus, and optic atrophy are common. Neuropsychiatric disturbances including impulsivity, poor attention span, hyperactivity, and emotional lability are also common. The course is fairly stable during early childhood and resembles static encephalopathy but is followed by neurologic deterioration between ages seven and 12 years. PLA2G6-related dystonia-parkinsonism has a variable age of onset, but most individuals present in early adulthood with gait disturbance or neuropsychiatric changes. Affected individuals consistently develop dystonia and parkinsonism (which may be accompanied by rapid cognitive decline) in their late teens to early twenties. Dystonia is most common in the hands and feet but may be more generalized. The most common features of parkinsonism in these individuals are bradykinesia, resting tremor, rigidity, and postural instability.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82852">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82888"><div><strong>Leucine-induced hypoglycemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82888</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0271714</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Leucine-sensitive hypoglycemia (LIH) is a condition in which symptomatic hypoglycemia is provoked by protein meals or the amino acid leucine (summary by Magge et al., 2004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82888">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82889"><div><strong>Glucocorticoid deficiency with achalasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82889</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0271742</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Triple A syndrome is an inherited condition characterized by three specific features: achalasia, Addison disease, and alacrima. Achalasia is a disorder that affects the ability to move food through the esophagus, the tube that carries food from the throat to the stomach. It can lead to severe feeding difficulties and low blood glucose (hypoglycemia). Addison disease, also known as primary adrenal insufficiency, is caused by abnormal function of the small hormone-producing glands on top of each kidney (adrenal glands). The main features of Addison disease include fatigue, loss of appetite, weight loss, low blood pressure, and darkening of the skin. The third major feature of triple A syndrome is a reduced or absent ability to secrete tears (alacrima). Most people with triple A syndrome have all three of these features, although some have only two.\n\nMany of the features of triple A syndrome are caused by dysfunction of the autonomic nervous system. This part of the nervous system controls involuntary body processes such as digestion, blood pressure, and body temperature. People with triple A syndrome often experience abnormal sweating, difficulty regulating blood pressure, unequal pupil size (anisocoria), and other signs and symptoms of autonomic nervous system dysfunction (dysautonomia).\n\nPeople with this condition may have other neurological abnormalities, such as developmental delay, intellectual disability, speech problems (dysarthria), and a small head size (microcephaly). In addition, affected individuals commonly experience muscle weakness, movement problems, and nerve abnormalities in their extremities (peripheral neuropathy). Some develop optic atrophy, which is the degeneration (atrophy) of the nerves that carry information from the eyes to the brain. Many of the neurological symptoms of triple A syndrome worsen over time.\n\nPeople with triple A syndrome frequently develop a thickening of the outer layer of skin (hyperkeratosis) on the palms of their hands and the soles of their feet. Other skin abnormalities may also be present in people with this condition.\n\nAlacrima is usually the first noticeable sign of triple A syndrome, as it becomes apparent early in life that affected children produce little or no tears while crying. They develop Addison disease and achalasia during childhood or adolescence, and most of the neurologic features of triple A syndrome begin during adulthood. The signs and symptoms of this condition vary among affected individuals, even among members of the same family.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82889">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82890"><div><strong>Pendred syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82890</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0271829</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SLC26A4-related sensorineural hearing loss (SLC26A4-SNHL), characterized by inner ear malformations also associated with vestibular dysfunction, comprises two phenotypes: (1) nonsyndromic SLC26A4-SNHL (also referred to as DFNB4 or nonsyndromic enlargement of the vestibular aqueduct [NSEVA]) and (2) Pendred syndrome (PDS) that includes thyroid involvement (typically identified more frequently in countries without universal salt iodization programs). The time of onset and type of presentation of the SNHL vary (such that some newborns pass their newborn hearing screening); however, by age three years most children have bilateral and severe-to-profound hearing loss. Manifestations of vestibular dysfunction (such as head-tilting, vomiting, and/or delayed ambulation or clumsiness in a child who previously walked well) can precede or accompany the fluctuations in hearing typical of this disorder. Thyroid enlargement (goiter) occurs gradually and is typically evident in the second decade, especially if iodine is not routinely included in the diet.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82890">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_82895"><div><strong>HNSHA due to aldolase A deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82895</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0272066</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Aldolase A deficiency is an autosomal recessive disorder associated with hereditary hemolytic anemia (Kishi et al., 1987).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82895">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_79465"><div><strong>Landau-Kleffner syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>79465</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0282512</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GRIN2A-related disorders encompass a broad phenotypic spectrum that includes developmental delay evolving to intellectual disability (DD/ID), epilepsy, speech and language disorders, movement disorders, and neuropsychiatric disorders. Intellect ranges from normal to profoundly impaired. Observed speech disorders include dysarthria and speech dyspraxia, and both receptive and expressive language delays; more mildly affected individuals may display subtly impaired intelligibility of conversational speech. Epilepsy features include seizure onset usually between ages three and six years, focal epilepsy with language and/or global developmental regression, and electroencephalogram (EEG) abnormalities, including continuous spike-and-wave discharges in sleep or very active centrotemporal discharges. Epilepsy is typically focal and ranges from self-limited epilepsy with centrotemporal spikes to developmental and/or epileptic encephalopathies (DEE/EE), including the syndromes of DEE/EE with spike-wave activation in sleep (DEE/EE-SWAS), which include Landau-Kleffner syndrome. Movement disorders occur less frequently and include ataxia, dystonia, and chorea.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/79465">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_90976"><div><strong>Iodotyrosyl coupling defect</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>90976</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0342194</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Kanou et al. (2007) reviewed characteristics of thyroid dyshormonogenesis caused by mutations in the thyroglobulin (TG) gene. This form of thyroid dyshormonogenesis has an estimated prevalence of one in 100,000 newborns. Inherited in an autosomal recessive manner, the disorder in the majority of patients causes large goiters of elastic and soft consistency. Although the degree of thyroid dysfunction varies considerably among patients with defective TG synthesis, patients usually have a relatively high serum free T3 concentration with disproportionately low free T4 level. The maintenance of relatively high FT3 levels prevents profound tissue hypothyroidism except in brain and pituitary, which are dependent on T4 supply, resulting in neurologic and intellectual defects in some cases.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/90976">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_87429"><div><strong>Iodotyrosine deiodination defect</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>87429</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0342195</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Presumed loss-of-function mutation(s) in the IYD gene, resulting in reduced activity of the enzyme iodotyrosine deiodinase.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/87429">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_87430"><div><strong>Thyroglobulin synthesis defect</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>87430</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0342196</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital hypothyroidism can also occur as part of syndromes that affect other organs and tissues in the body. These forms of the condition are described as syndromic. Some common forms of syndromic hypothyroidism include Pendred syndrome, Bamforth-Lazarus syndrome, and brain-lung-thyroid syndrome.\n\nCongenital hypothyroidism occurs when the thyroid gland fails to develop or function properly. In 80 to 85 percent of cases, the thyroid gland is absent, severely reduced in size (hypoplastic), or abnormally located. These cases are classified as thyroid dysgenesis. In the remainder of cases, a normal-sized or enlarged thyroid gland (goiter) is present, but production of thyroid hormones is decreased or absent. Most of these cases occur when one of several steps in the hormone synthesis process is impaired; these cases are classified as thyroid dyshormonogenesis. Less commonly, reduction or absence of thyroid hormone production is caused by impaired stimulation of the production process (which is normally done by a structure at the base of the brain called the pituitary gland), even though the process itself is unimpaired. These cases are classified as central (or pituitary) hypothyroidism.\n\nSigns and symptoms of congenital hypothyroidism result from the shortage of thyroid hormones. Affected babies may show no features of the condition, although some babies with congenital hypothyroidism are less active and sleep more than normal. They may have difficulty feeding and experience constipation. If untreated, congenital hypothyroidism can lead to intellectual disability and slow growth. In the United States and many other countries, all hospitals test newborns for congenital hypothyroidism. If treatment begins in the first two weeks after birth, infants usually develop normally.\n\nCongenital hypothyroidism is a partial or complete loss of function of the thyroid gland (hypothyroidism) that affects infants from birth (congenital). The thyroid gland is a butterfly-shaped tissue in the lower neck. It makes iodine-containing hormones that play an important role in regulating growth, brain development, and the rate of chemical reactions in the body (metabolism). People with congenital hypothyroidism have lower-than-normal levels of these important hormones.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/87430">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_83336"><div><strong>Fetal iodine deficiency disorder</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>83336</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0342200</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Severely reduced physical and mental growth associated with pyramidal and extrapyramidal signs and symptoms, due to dietary iodine deficiency.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/83336">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_90978"><div><strong>Bird-headed dwarfism with progressive ataxia, insulin-resistant diabetes, goiter, and primary gonadal insufficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>90978</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0342284</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bangstad syndrome is a rare endocrine disease characterized by the association of primordial birdheaded nanism, progressive ataxia, goiter, primary gonadal insufficiency and insulin resistant diabetes mellitus. Plasma concentrations of TSH, PTH, LH, FSH, ACTH, glucagon, and insulin are usually elevated. A generalized cell membrane defect was suggested to be the pathophysiological abnormality in these patients. The mode of inheritance was thought to be autosomal recessive. There have been no further descriptions in the literature since 1989.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/90978">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_83337"><div><strong>Woodhouse-Sakati syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>83337</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0342286</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Virtually all individuals with Woodhouse-Sakati syndrome (WSS) have the endocrine findings of hypogonadism (evident at puberty) and progressive childhood-onset hair thinning that often progresses to alopecia totalis in adulthood. More than half of individuals have the neurologic findings of progressive extrapyramidal movements (dystonic spasms with dystonic posturing with dysarthria and dysphagia), moderate bilateral postlingual sensorineural hearing loss, and mild intellectual disability. To date, more than 40 families (including 33 with a molecularly confirmed diagnosis) with a total of 88 affected individuals have been reported in the literature.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/83337">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_137976"><div><strong>Transcobalamin II deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>137976</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0342701</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Transcobalamin II deficiency (TCN2D) is an autosomal recessive disorder with onset in early infancy characterized by failure to thrive, megaloblastic anemia, and pancytopenia. Other features include methylmalonic aciduria, recurrent infections, and vomiting and diarrhea. Treatment with cobalamin results in clinical improvement, but the untreated disorder may result in mental retardation and neurologic abnormalities (summary by Haberle et al., 2009).&#13; Hall (1981) gave a clinically oriented review of congenital defects of vitamin B12 transport, and Frater-Schroder (1983) gave a genetically oriented review.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/137976">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_83348"><div><strong>Congenital defect of folate absorption</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>83348</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0342705</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary folate malabsorption (HFM) is characterized by folate deficiency due to impaired intestinal folate absorption and impaired folate transport into the central nervous system. Findings include poor feeding, failure to thrive, and anemia. There can be leukopenia and thrombocytopenia, diarrhea and/or oral mucositis, hypoimmunoglobulinemia, and other immunologic dysfunction resulting in infections, most often Pneumocystis jirovecii pneumonia. Neurologic manifestations include developmental delays, cognitive and motor disorders, behavioral disorders, and seizures.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/83348">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_452447"><div><strong>D-Glyceric aciduria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>452447</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0342765</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">D-glyceric aciduria is a rare autosomal recessive metabolic disorder with a highly variable phenotype. Some patients have an encephalopathic presentation, with severely impaired intellectual development, seizures, microcephaly, and sometimes early death, whereas others have a mild phenotype with only mild speech delay or even normal development (summary by Sass et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/452447">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_91001"><div><strong>Deficiency of malonyl-CoA decarboxylase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>91001</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0342793</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Malonyl-CoA decarboxylase deficiency is an uncommon inherited metabolic disease. The characteristic phenotype is variable, but may include developmental delay in early childhood, seizures, hypotonia, diarrhea, vomiting, metabolic acidosis, hypoglycemia, ketosis, abnormal urinary compounds, lactic acidemia, and hypertrophic cardiomyopathy (Sweetman and Williams, 2001).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/91001">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_83353"><div><strong>Dihydropyrimidinase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>83353</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0342803</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dihydropyrimidinase deficiency (DPYSD) is an autosomal recessive disease characterized by the presence of dihydropyrimidinuria. The clinical phenotype is highly variable, ranging from early infantile onset of severe neurologic involvement, dysmorphic features, and feeding problems to late onset of mild intellectual disability and even asymptomatic individuals. Patients with a complete or partial deficiency have an increased risk of developing severe toxicity after administration of the anticancer drug 5-fluorouracil (5-FU) (summary by Nakajima et al., 2017).&#13; See also dihydropyrimidine dehydrogenase deficiency (274270), a similar disorder.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/83353">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_91042"><div><strong>Osteopetrosis with renal tubular acidosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>91042</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0345407</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Osteopetrosis is a bone disease that makes bone tissue abnormally compact and dense and also prone to breakage (fracture). Researchers have described several major types of osteopetrosis, which are usually distinguished by their pattern of inheritance: autosomal dominant or autosomal recessive. The different types of the disorder can also be distinguished by the severity of their signs and symptoms.\n\nAutosomal dominant osteopetrosis (ADO), which is also called Albers-Schönberg disease, is typically the mildest type of the disorder. Some affected individuals have no symptoms. In affected people with no symptoms, the unusually dense bones may be discovered by accident when an x-ray is done for another reason. \n\nIn individuals with ADO who develop signs and symptoms, the major features of the condition include multiple bone fractures after minor injury, abnormal side-to-side curvature of the spine (scoliosis) or other spinal abnormalities, arthritis in the hips, and a bone infection called osteomyelitis. These problems usually become apparent in late childhood or adolescence.\n\nAutosomal recessive osteopetrosis (ARO) is a more severe form of the disorder that becomes apparent in early infancy. Affected individuals have a high risk of bone fracture resulting from seemingly minor bumps and falls. Their abnormally dense skull bones pinch nerves in the head and face (cranial nerves), often resulting in vision loss, hearing loss, and paralysis of facial muscles. Dense bones can also impair the function of bone marrow, preventing it from producing new blood cells and immune system cells. As a result, people with severe osteopetrosis are at risk of abnormal bleeding, a shortage of red blood cells (anemia), and recurrent infections. In the most severe cases, these bone marrow abnormalities can be life-threatening in infancy or early childhood.\n\nOther features of autosomal recessive osteopetrosis can include slow growth and short stature, dental abnormalities, and an enlarged liver and spleen (hepatosplenomegaly). Depending on the genetic changes involved, people with severe osteopetrosis can also have brain abnormalities, intellectual disability, or recurrent seizures (epilepsy).\n\nA few individuals have been diagnosed with intermediate autosomal osteopetrosis (IAO), a form of the disorder that can have either an autosomal dominant or an autosomal recessive pattern of inheritance. The signs and symptoms of this condition become noticeable in childhood and include an increased risk of bone fracture and anemia. People with this form of the disorder typically do not have life-threatening bone marrow abnormalities. However, some affected individuals have had abnormal calcium deposits (calcifications) in the brain, intellectual disability, and a form of kidney disease called renal tubular acidosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/91042">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_95931"><div><strong>Roberts-SC phocomelia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>95931</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0392475</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ESCO2 spectrum disorder is characterized by mild-to-severe prenatal growth restriction, limb malformations (which can include bilateral symmetric tetraphocomelia or hypomelia caused by mesomelic shortening), hand anomalies (including oligodactyly, thumb aplasia or hypoplasia, and syndactyly), elbow and knee flexion contractures (involving elbows, wrists, knees, ankles, and feet [talipes equinovarus]), and craniofacial abnormalities (which can include bilateral cleft lip and/or cleft palate, micrognathia, widely spaced eyes, exophthalmos, downslanted palpebral fissures, malar flattening, and underdeveloped ala nasi), ear malformation, and corneal opacities. Intellectual disability (ranging from mild to severe) is common. Early mortality is common among severely affected pregnancies and newborns; mildly affected individuals may survive to adulthood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/95931">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98284"><div><strong>Epilepsy with myoclonic atonic seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98284</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0393702</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SLC6A1-related neurodevelopmental disorder (SLC6A1-NDD) is characterized by mild-to-severe developmental delay and/or intellectual disability, hypotonia, epilepsy, movement disorders (e.g., tremor, stereotypies, ataxia), and neurobehavioral and/or psychiatric manifestations (e.g., autism spectrum disorder, attention-deficit/hyperactivity disorder, aggression, anxiety, and/or sleep disturbances). Language skills, particularly expressive language, are often more significantly affected than motor development. Developmental regression has been reported. Gastrointestinal manifestations (e.g., constipation, diarrhea) are also common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98284">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_96004"><div><strong>Congenital laryngeal abductor palsy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96004</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0396059</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Laryngeal abductor paralysis is an autosomal dominant condition characterized by variable penetrance and expressivity ranging from mild symptoms to neonatal asphyxia. (summary by Morelli et al., 1982; Manaligod and Smith, 1998).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96004">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_97988"><div><strong>Glutathione synthetase deficiency with 5-oxoprolinuria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>97988</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0398746</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">5-Oxoprolinuria can be caused by genetic defects in either of 2 enzymes involved in the gamma-glutamyl cycle of glutathione metabolism: glutathione synthetase (GSS) or 5-oxoprolinase (OPLAH; 614243). Glutathione synthetase deficiency (GSSD) is an autosomal recessive disorder characterized, in its severe form, by massive urinary excretion of 5-oxoproline, metabolic acidosis, hemolytic anemia, and central nervous system damage. The metabolic defect results in decreased levels of cellular glutathione, which overstimulates the synthesis of gamma-glutamylcysteine and its subsequent conversion to 5-oxoproline (Larsson and Anderson, 2001).&#13; See 5-oxoprolinuria due to 5-oxoprolinase deficiency (260005).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/97988">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_140771"><div><strong>Microcephaly, normal intelligence and immunodeficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>140771</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0398791</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nijmegen breakage syndrome (NBS) is characterized by progressive microcephaly, early growth deficiency that improves with age, recurrent respiratory infections, an increased risk for malignancy (primarily lymphoma), and premature ovarian failure in females. Developmental milestones are attained at the usual time during the first year; however, borderline delays in development and hyperactivity may be observed in early childhood. Intellectual abilities tend to decline over time. Recurrent pneumonia and bronchitis may result in respiratory failure and early death. Other reported malignancies include solid tumors (e.g., medulloblastoma, glioma, rhabdomyosarcoma).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/140771">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_96043"><div><strong>Prune belly syndrome with pulmonic stenosis, intellectual disability, and deafness</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96043</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0403551</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96043">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_140806"><div><strong>Neonatal pseudo-hydrocephalic progeroid syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>140806</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0406586</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Wiedemann-Rautenstrauch syndrome (WDRTS) is a rare autosomal recessive neonatal progeroid disorder characterized by intrauterine growth retardation, failure to thrive, short stature, a progeroid appearance, hypotonia, and variable mental impairment (summary by Toriello, 1990). Average survival in WDRTS is 7 months, although survival into the third decade of life has been reported (Akawi et al., 2013).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/140806">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98030"><div><strong>Wrinkly skin syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98030</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0406587</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ATP6V0A2-related cutis laxa is characterized by generalized cutis laxa, findings associated with generalized connective tissue disorder, developmental delays, and a variety of neurologic findings including abnormality on brain MRI. At birth, hypotonia, overfolded skin, and distinctive facial features are present and enlarged fontanelles are often observed. During childhood, the characteristic facial features and thick or coarse hair may become quite pronounced. The skin findings decrease with age, although easy bruising and Ehlers-Danlos-like scars have been described in some. In most (not all) affected individuals, cortical and cerebellar malformations are observed on brain MRI. Nearly all affected individuals have developmental delays, seizures, and neurologic regression.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98030">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98032"><div><strong>Ankyloblepharon-ectodermal defects-cleft lip/palate syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98032</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0406709</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The TP63-related disorders comprise six overlapping phenotypes: Ankyloblepharon-ectodermal defects-cleft lip/palate (AEC) syndrome (which includes Rapp-Hodgkin syndrome). Acro-dermo-ungual-lacrimal-tooth (ADULT) syndrome. Ectrodactyly, ectodermal dysplasia, cleft lip/palate syndrome 3 (EEC3). Limb-mammary syndrome. Split-hand/foot malformation type 4 (SHFM4). Isolated cleft lip/cleft palate (orofacial cleft 8). Individuals typically have varying combinations of ectodermal dysplasia (hypohidrosis, nail dysplasia, sparse hair, tooth abnormalities), cleft lip/palate, split-hand/foot malformation/syndactyly, lacrimal duct obstruction, hypopigmentation, hypoplastic breasts and/or nipples, and hypospadias. Findings associated with a single phenotype include ankyloblepharon filiforme adnatum (tissue strands that completely or partially fuse the upper and lower eyelids), skin erosions especially on the scalp associated with areas of scarring, and alopecia, trismus, and excessive freckling.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98032">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98034"><div><strong>GAPO syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98034</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0406723</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GAPO syndrome is the acronymic designation for a complex of growth retardation, alopecia, pseudoanodontia (failure of tooth eruption), and progressive optic atrophy (Tipton and Gorlin, 1984). Ilker et al. (1999) and Bayram et al. (2014) noted that optic atrophy is not a consistent feature of the disorder.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98034">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_96069"><div><strong>Orofacial-digital syndrome III</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96069</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0406726</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Other features occur in only one or a few types of oral-facial digital syndrome. These features help distinguish the different forms of the disorder. For example, the most common form of oral-facial-digital syndrome, type I, is associated with polycystic kidney disease. This kidney disease is characterized by the growth of fluid-filled sacs (cysts) that interfere with the kidneys' ability to filter waste products from the blood. Other forms of oral-facial-digital syndrome are characterized by neurological problems, particular changes in the structure of the brain, bone abnormalities, vision loss, and heart defects.\n\nAbnormalities of the digits can affect both the fingers and the toes in people with oral-facial-digital syndrome. These abnormalities include fusion of certain fingers or toes (syndactyly), digits that are shorter than usual (brachydactyly), or digits that are unusually curved (clinodactyly). The presence of extra digits (polydactyly) is also seen in most forms of oral-facial-digital syndrome.\n\nDistinctive facial features often associated with oral-facial-digital syndrome include a split in the lip (a cleft lip); a wide nose with a broad, flat nasal bridge; and widely spaced eyes (hypertelorism).\n\nAbnormalities of the oral cavity that occur in many types of oral-facial-digital syndrome include a split (cleft) in the tongue, a tongue with an unusual lobed shape, and the growth of noncancerous tumors or nodules on the tongue. Affected individuals may also have extra, missing, or defective teeth. Another common feature is an opening in the roof of the mouth (a cleft palate). Some people with oral-facial-digital syndrome have bands of extra tissue (called hyperplastic frenula) that abnormally attach the lip to the gums.\n\nThe signs and symptoms of oral-facial-digital syndrome vary widely. However, most forms of this disorder involve problems with development of the oral cavity, facial features, and digits. Most forms are also associated with brain abnormalities and some degree of intellectual disability.\n\nResearchers have identified at least 13 potential forms of oral-facial-digital syndrome. The different types are classified by their patterns of signs and symptoms. However, the features of the various types overlap significantly, and some types are not well defined. The classification system for oral-facial-digital syndrome continues to evolve as researchers find more affected individuals and learn more about this disorder.\n\nOral-facial-digital syndrome is actually a group of related conditions that affect the development of the oral cavity (the mouth and teeth), facial features, and digits (fingers and toes).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96069">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98036"><div><strong>Amelocerebrohypohidrotic syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98036</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0406740</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Kohlschutter-Tonz syndrome (KTZS) is an autosomal recessive disorder characterized by severe global developmental delay, early-onset intractable seizures, spasticity, and amelogenesis imperfecta affecting both primary and secondary teeth and causing yellow or brown discoloration of the teeth. Although the phenotype is consistent, there is variability. Impaired intellectual development is related to the severity of seizures, and the disorder can thus be considered an epileptic encephalopathy. Some infants show normal development until seizure onset, whereas others are delayed from birth. The most severely affected individuals have profound mental retardation, never acquire speech, and become bedridden early in life (summary by Schossig et al., 2012 and Mory et al., 2012).&#13; See also Kohlschutter-Tonz syndrome-like (KTZSL; 619229), caused by heterozygous mutation in the SATB1 gene (602075) on chromosome 3p23.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98036">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_140820"><div><strong>Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A, 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>140820</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0410174</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fukuyama congenital muscular dystrophy (FCMD) is characterized by hypotonia, symmetric generalized muscle weakness, and CNS migration disturbances that result in changes consistent with cobblestone lissencephaly with cerebral and cerebellar cortical dysplasia. Mild, typical, and severe phenotypes are recognized. Onset typically occurs in early infancy with poor suck, weak cry, and floppiness. Affected individuals have contractures of the hips, knees, and interphalangeal joints. Later features include myopathic facial appearance, pseudohypertrophy of the calves and forearms, motor and speech delays, intellectual disability, seizures, ophthalmologic abnormalities including visual impairment and retinal dysplasia, and progressive cardiac involvement after age ten years. Swallowing disturbance occurs in individuals with severe FCMD and in individuals older than age ten years, leading to recurrent aspiration pneumonia and death.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/140820">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98046"><div><strong>Ullrich congenital muscular dystrophy 1A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98046</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0410179</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Collagen VI-related dystrophies (COL6-RDs) represent a continuum of overlapping clinical phenotypes with Bethlem muscular dystrophy at the milder end, Ullrich congenital muscular dystrophy (UCMD) at the more severe end, and a phenotype in between UCMD and Bethlem muscular dystrophy, referred to as intermediate COL6-RD. Bethlem muscular dystrophy is characterized by a combination of proximal muscle weakness and joint contractures. Hypotonia and delayed motor milestones occur in early childhood; mild hypotonia and weakness may be present congenitally. By adulthood, there is evidence of proximal weakness and contractures of the elbows, Achilles tendons, and long finger flexors. The progression of weakness is slow, and more than two thirds of affected individuals older than age 50 years remain independently ambulatory indoors, while relying on supportive means for mobility outdoors. Respiratory involvement is not a consistent feature. UCMD is characterized by congenital weakness, hypotonia, proximal joint contractures, and striking hyperlaxity of distal joints. Decreased fetal movements are frequently reported. Some affected children acquire the ability to walk independently; however, progression of the disease results in a loss of ambulation by age ten to eleven years. Early and severe respiratory insufficiency occurs in all individuals, resulting in the need for nocturnal noninvasive ventilation (NIV) in the form of bilevel positive airway pressure (BiPAP) by age 11 years. Intermediate COL6-RD is characterized by independent ambulation past age 11 years and respiratory insufficiency that is later in onset than in UCMD and results in the need for NIV in the form of BiPAP by the late teens to early 20s. In contrast to individuals with Bethlem muscular dystrophy, those with intermediate COL6-RD typically do not achieve the ability to run, jump, or climb stairs without use of a railing.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98046">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98047"><div><strong>Eichsfeld type congenital muscular dystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98047</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0410180</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rigid spine muscular dystrophy (RSMD) is a form of congenital muscular dystrophy. Disorders in this group cause muscle weakness and wasting (atrophy) beginning very early in life. In particular, RSMD involves weakness of the muscles of the torso and neck (axial muscles). Other characteristic features include spine stiffness and serious breathing problems.\n\nIn RSMD, muscle weakness is often apparent at birth or within the first few months of life. Affected infants can have poor head control and weak muscle tone (hypotonia), which may delay the development of motor skills such as crawling or walking. Over time, muscles surrounding the spine atrophy, and the joints of the spine develop deformities called contractures that restrict movement. The neck and back become stiff and rigid, and affected children have limited ability to move their heads up and down or side to side. Affected children eventually develop an abnormal curvature of the spine (scoliosis). In some people with RSMD, muscles in the inner thighs also atrophy, although it does not impair the ability to walk.\n\nA characteristic feature of RSMD is breathing difficulty (respiratory insufficiency) due to restricted movement of the torso and weakness of the diaphragm, which is the muscle that separates the abdomen from the chest cavity. The breathing problems, which tend to occur only at night, can be life-threatening. Many affected individuals require a machine to help them breathe (mechanical ventilation) during sleep.\n\nThe combination of features characteristic of RSMD, particularly axial muscle weakness, spine rigidity, and respiratory insufficiency, is sometimes referred to as rigid spine syndrome. While these features occur on their own in RSMD, they can also occur along with additional signs and symptoms in other muscle disorders. The features of rigid spine syndrome typically appear at a younger age in people with RSMD than in those with other muscle disorders.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98047">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98376"><div><strong>Hypochondroplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98376</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0410529</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypochondroplasia is a skeletal dysplasia characterized by short stature; stocky build; disproportionately short arms and legs; broad, short hands and feet; mild joint laxity; and macrocephaly. Radiologic features include shortening of long bones with mild metaphyseal flare; narrowing of the inferior lumbar interpedicular distances; short, broad femoral neck; and squared, shortened ilia. The skeletal features are very similar to those seen in achondroplasia but tend to be milder. Medical complications common to achondroplasia (e.g., spinal stenosis, tibial bowing, obstructive apnea) occur less frequently in hypochondroplasia but intellectual disability and epilepsy may be more prevalent. Children usually present as toddlers or at early school age with decreased growth velocity leading to short stature and limb disproportion. Other features also become more prominent over time.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98376">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98377"><div><strong>Metachondromatosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98377</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0410530</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Metachondromatosis is characterized by exostoses (osteochondromas), commonly of the hands and feet, and enchondromas of long bone metaphyses and iliac crests (summary by Sobreira et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98377">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98378"><div><strong>Pseudoachondroplastic spondyloepiphyseal dysplasia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98378</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0410538</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">COMP-related pseudoachondroplasia (COMP-PSACH) is characterized by normal length at birth and normal facies. Often the presenting feature is a waddling gait, recognized at the onset of walking. Typically, the growth rate falls below the standard growth curve by approximately age two years, leading to a moderately severe form of disproportionate short-limb short stature. Joint pain during childhood, particularly in the large joints of the lower extremities, is common. Degenerative joint disease is progressive; approximately 50% of individuals with COMP-PSACH eventually require hip replacement surgery.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98378">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_96563"><div><strong>Gillespie syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96563</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0431401</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Gillespie syndrome (GLSP) is usually diagnosed in the first year of life by the presence of fixed dilated pupils in a hypotonic infant. Affected individuals have a characteristic form of iris hypoplasia in which the pupillary border of the iris exhibits a scalloped or 'festooned' edge, with iris strands extending onto the anterior lens surface at regular intervals. The key extraocular features of Gillespie syndrome are congenital hypotonia, progressive cerebellar hypoplasia, and ataxia, as well as variable cognitive impairment that is usually mild (summary by Gerber et al., 2016 and McEntagart et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96563">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98473"><div><strong>Trigonocephaly 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98473</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432122</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Individuals with trigonocephaly have a keel-shaped forehead with wide biparietal diameter, resulting in a triangular shape of the head. Trigonocephaly results from premature closure of the metopic sutures and usually occurs sporadically (summary by Frydman et al., 1984).&#13; Genetic Heterogeneity of Isolated Trigonocephaly&#13; Also see trigonocephaly-2 (TRIGNO2; 614485), caused by mutation in the FREM1 gene (608944) on chromosome 9p22.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98473">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_96583"><div><strong>Brachyrachia (short spine dysplasia)</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96583</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432227</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">The autosomal dominant TRPV4 disorders (previously considered to be clinically distinct phenotypes before their molecular basis was discovered) are now grouped into neuromuscular disorders and skeletal dysplasias; however, the overlap within each group is considerable. Affected individuals typically have either neuromuscular or skeletal manifestations alone, and in only rare instances an overlap syndrome has been reported. The three autosomal dominant neuromuscular disorders (mildest to most severe) are: Charcot-Marie-Tooth disease type 2C. Scapuloperoneal spinal muscular atrophy. Congenital distal spinal muscular atrophy. The autosomal dominant neuromuscular disorders are characterized by a congenital-onset, static, or later-onset progressive peripheral neuropathy with variable combinations of laryngeal dysfunction (i.e., vocal fold paresis), respiratory dysfunction, and joint contractures. The six autosomal dominant skeletal dysplasias (mildest to most severe) are: Familial digital arthropathy-brachydactyly. Autosomal dominant brachyolmia. Spondylometaphyseal dysplasia, Kozlowski type. Spondyloepiphyseal dysplasia, Maroteaux type. Parastremmatic dysplasia. Metatropic dysplasia. The skeletal dysplasia is characterized by brachydactyly (in all 6); the five that are more severe have short stature that varies from mild to severe with progressive spinal deformity and involvement of the long bones and pelvis. In the mildest of the autosomal dominant TRPV4 disorders life span is normal; in the most severe it is shortened. Bilateral progressive sensorineural hearing loss (SNHL) can occur with both autosomal dominant neuromuscular disorders and skeletal dysplasias.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96583">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_96585"><div><strong>Langer mesomelic dysplasia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96585</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432230</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Langer mesomelic dysplasia (LMD) is characterized by severe limb aplasia or severe hypoplasia of the ulna and fibula, and a thickened and curved radius and tibia. These changes can result in displacement deformities of the hands and feet. Hypoplasia of the mandible is also observed (Langer, 1967).&#13; See also Leri-Weill dyschondrosteosis (127300), a less severe phenotype that results from heterozygous defect in the SHOX or SHOXY genes.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96585">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98478"><div><strong>Mesomelic dwarfism, Nievergelt type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98478</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432231</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare primary bone dysplasia characterized by severe mesomelic shortness particularly of the lower limbs with distinctive triangular or rhomboid-shaped tibiae and fibulae, accompanied by bony protuberances and skin dimples. Additional manifestations include radioulnar synostosis, dislocation of the radial head, abnormalities of the hands (such as oligosyndactyly or fusiform-shaped fingers) and feet (pes equinovarus, synostoses of tarsals/metatarsals and phalanges), and dysmorphic facial features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98478">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_140929"><div><strong>Trichorhinophalangeal dysplasia type I</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>140929</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432233</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Trichorhinophalangeal syndrome (TRPS) comprises TRPS I (caused by a heterozygous pathogenic variant in TRPS1) and TRPS II (caused by a contiguous gene deletion of TRPS1, RAD21, and EXT1). Both TRPS types are characterized by distinctive facial features (large nose with broad nasal ridge and tip and underdeveloped alae; thick and broad medial eyebrows; long philtrum; thin vermilion of the upper lip; and large prominent ears); ectodermal features (fine, sparse, depigmented, and slow-growing hair and dystrophic nails); and skeletal findings (short stature, brachydactyly with ulnar or radial deviation of the fingers, short feet, and early, marked hip dysplasia). TRPS II is additionally characterized by multiple osteochondromas and an increased risk of mild-to-moderate intellectual disability.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/140929">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_96586"><div><strong>Cranioectodermal dysplasia 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96586</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432235</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cranioectodermal dysplasia (CED) is a ciliopathy with skeletal involvement (narrow thorax, shortened proximal limbs, syndactyly, polydactyly, brachydactyly), ectodermal features (widely spaced hypoplastic teeth, hypodontia, sparse hair, skin laxity, abnormal nails), joint laxity, growth deficiency, and characteristic facial features (frontal bossing, low-set simple ears, high forehead, telecanthus, epicanthal folds, full cheeks, everted lower lip). Most affected children develop nephronophthisis that often leads to end-stage kidney disease in infancy or childhood, a major cause of morbidity and mortality. Hepatic fibrosis and retinal dystrophy are also observed. Dolichocephaly, often secondary to sagittal craniosynostosis, is a primary manifestation that distinguishes CED from most other ciliopathies. Brain malformations and developmental delay may also occur.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96586">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_96587"><div><strong>Microcephalic osteodysplastic primordial dwarfism type II</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96587</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432246</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Microcephalic osteodysplastic primordial dwarfism type II (MOPDII), the most common form of microcephalic primordial dwarfism, is characterized by extreme short stature and microcephaly along with distinctive facial features. Associated features that differentiate it from other forms of primordial dwarfism and that may necessitate treatment include: abnormal dentition, a slender bone skeletal dysplasia with hip deformity and/or scoliosis, insulin resistance / diabetes mellitus, chronic kidney disease, cardiac malformations, and global vascular disease. The latter includes neurovascular disease such as moyamoya vasculopathy and intracranial aneurysms (which can lead to strokes), coronary artery disease (which can lead to premature myocardial infarctions), and renal vascular disease. Hypertension, which is also common, can have multiple underlying causes given the complex comorbidities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96587">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98149"><div><strong>Geroderma osteodysplastica</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98149</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432255</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Geroderma osteodysplasticum (GO) is an autosomal recessive disorder characterized by skin wrinkling limited to the dorsa of hands and feet and to the abdomen, bowed long bones, and osteopenia with frequent fractures. There is a distinctive facial appearance with droopy skin at the cheeks, maxillary hypoplasia, and large ears. Adult patients appear prematurely aged (summary by Rajab et al., 2008).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98149">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98150"><div><strong>Dysosteosclerosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98150</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432262</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic primary bone dysplasia disease characterized by progressive osteosclerosis and platyspondyly.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98150">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_98483"><div><strong>Lenz-Majewski hyperostosis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98483</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432269</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Lenz-Majewski hyperostotic dwarfism is a rare condition characterized by intellectual disability, sclerosing bone dysplasia, distinct craniofacial and dental anomalies, loose skin, and distal limb anomalies, particularly brachydactyly and symphalangism. Patients have multiple radiographic abnormalities due to progressive generalized hyperostosis that affects the cranium, vertebrae, and diaphyses of tubular bones, leading to severe growth retardation (summary by Sousa et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98483">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_96604"><div><strong>Deletion of short arm of chromosome 18</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96604</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432442</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The main clinical manifestations of chromosome 18p deletion syndrome are impaired intellectual development, growth retardation, craniofacial dysmorphism including round face, dysplastic ears, wide mouth and dental anomalies, and abnormalities of the limbs, genitalia, brain, eyes, and heart. The round face characteristic in the neonatal period and childhood may change to a long face with linear growth of the height of the face (summary by Tsukahara et al., 2001).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96604">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_96605"><div><strong>Deletion of long arm of chromosome 18</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96605</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0432443</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Monosomy 18q is a partial deletion of the long arm of chromosome 18 characterized by highly variable phenotype, most commonly including hypotonia, developmental delay, short stature, growth hormone deficiency, hearing loss and external ear anomalies, intellectual disability, palatal defects, dysmorphic facial features, skeletal anomalies (foot deformities, tapering fingers, scoliosis) and mood disorders.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96605">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_154356"><div><strong>Deficiency of guanidinoacetate methyltransferase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>154356</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0574080</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The creatine deficiency disorders (CDDs), inborn errors of creatine metabolism and transport, comprise three disorders: the creatine biosynthesis disorders guanidinoacetate methyltransferase (GAMT) deficiency and L-arginine:glycine amidinotransferase (AGAT) deficiency; and creatine transporter (CRTR) deficiency. Developmental delay and cognitive dysfunction or intellectual disability and speech-language disorder are common to all three CDDs. Onset of clinical manifestations of GAMT deficiency (reported in ~130 individuals) is between ages three months and two years; in addition to developmental delays, the majority of individuals have epilepsy and develop a behavior disorder (e.g., hyperactivity, autism, or self-injurious behavior), and about 30% have movement disorder. AGAT deficiency has been reported in 16 individuals; none have had epilepsy or movement disorders. Clinical findings of CRTR deficiency in affected males (reported in ~130 individuals) in addition to developmental delays include epilepsy (variable seizure types and may be intractable) and behavior disorders (e.g., attention deficit and/or hyperactivity, autistic features, impulsivity, social anxiety), hypotonia, and (less commonly) a movement disorder. Poor weight gain with constipation and prolonged QTc on EKG have been reported. While mild-to-moderate intellectual disability is commonly observed up to age four years, the majority of adult males with CRTR deficiency have been reported to have severe intellectual disability. Females heterozygous for CRTR deficiency are typically either asymptomatic or have mild intellectual disability, although a more severe phenotype resembling the male phenotype has been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/154356">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_108454"><div><strong>Costello syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>108454</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0587248</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">While the majority of individuals with HRAS-related Costello syndrome (Costello syndrome) share characteristic findings affecting multiple organ systems, the phenotypic spectrum is wide, ranging from a mild or attenuated phenotype to a severe phenotype with early-lethal complications. Costello syndrome is typically characterized by failure to thrive in infancy as a result of severe postnatal feeding difficulties; short stature; developmental delay or intellectual disability; coarse facial features (full lips, large mouth, full nasal tip); curly or sparse, fine hair; loose, soft skin with deep palmar and plantar creases; papillomata of the face and perianal region; diffuse hypotonia and joint laxity with ulnar deviation of the wrists and fingers; tight Achilles tendons; and cardiac involvement including cardiac hypertrophy (usually hypertrophic cardiomyopathy), congenital heart defects (usually valvular pulmonic stenosis), and arrhythmia (usually supraventricular tachycardia, especially abnormal atrial rhythm / multifocal atrial tachycardia or ectopic atrial tachycardia). Relative or absolute macrocephaly is typical, and postnatal cerebellar overgrowth can result in the development of a Chiari I malformation with associated anomalies including hydrocephalus or syringomyelia. Individuals with Costello syndrome have an approximately 15% lifetime risk for malignant tumors including rhabdomyosarcoma and neuroblastoma in young children and transitional cell carcinoma of the bladder in adolescents and young adults.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/108454">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_154638"><div><strong>Microphthalmia with limb anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>154638</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0599973</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Microphthalmia with limb anomalies (MLA), also known as Waardenburg anophthalmia syndrome or ophthalmoacromelic syndrome (OAS), is a rare autosomal recessive developmental disorder characterized by unilateral or bilateral microphthalmia, clinical anophthalmia, syndactyly, polydactyly, synostosis, or oligodactyly. Long-bone hypoplasia and renal, venous, and vertebral anomalies may also be present. Impaired intellectual development is present in about half of affected individuals (summary by Tekin et al., 2000, Abouzeid et al., 2011).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/154638">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_147134"><div><strong>Spondyloepimetaphyseal dysplasia, Strudwick type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>147134</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0700635</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">The Strudwick type of spondyloepimetaphyseal dysplasia (SEMD) is characterized by disproportionate short stature, pectus carinatum, and scoliosis, as well as dappled metaphyses (summary by Tiller et al., 1995).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/147134">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_152667"><div><strong>Floating-Harbor syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>152667</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0729582</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Floating-Harbor syndrome (FHS) is characterized by typical craniofacial features; low birth weight, normal head circumference, and short stature; bone age delay that normalizes between ages six and 12 years; skeletal anomalies (brachydactyly, clubbing, clinodactyly, short thumbs, prominent joints, clavicular abnormalities); severe receptive and expressive language impairment; hypernasality and high-pitched voice; and intellectual disability that is typically mild to moderate. Difficulties with temperament and behavior that are present in many children tend to improve in adulthood. Other features can include hyperopia and/or strabismus, conductive hearing loss, seizures, gastroesophageal reflux, renal anomalies (e.g., hydronephrosis / renal pelviectasis, cysts, and/or agenesis), and genital anomalies (e.g., hypospadias and/or undescended testes).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/152667">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_155487"><div><strong>Cockayne syndrome type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>155487</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0751038</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cockayne syndrome (referred to as CS in this GeneReview) spans a continuous phenotypic spectrum that includes CS type I, the "classic" or "moderate" form; CS type II, a more severe form with symptoms present at birth (this form overlaps with cerebrooculofacioskeletal [COFS] syndrome); CS type III, a milder and later-onset form; and COFS syndrome, a fetal form of CS. CS type I is characterized by normal prenatal growth with the onset of growth and developmental abnormalities in the first two years. By the time the disease has become fully manifest, height, weight, and head circumference are far below the fifth percentile. Progressive impairment of vision, hearing, and central and peripheral nervous system function leads to severe disability; death typically occurs in the first or second decade. CS type II is characterized by growth failure at birth, with little or no postnatal neurologic development. Congenital cataracts or other structural anomalies of the eye may be present. Affected children have early postnatal contractures of the spine (kyphosis, scoliosis) and joints. Death usually occurs by age five years. CS type III is a phenotype in which major clinical features associated with CS only become apparent after age two years; growth and/or cognition exceeds the expectations for CS type I. COFS syndrome is characterized by very severe prenatal developmental anomalies (arthrogryposis and microphthalmia).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/155487">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_155488"><div><strong>Cockayne syndrome type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>155488</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0751039</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cockayne syndrome (referred to as CS in this GeneReview) spans a continuous phenotypic spectrum that includes CS type I, the "classic" or "moderate" form; CS type II, a more severe form with symptoms present at birth (this form overlaps with cerebrooculofacioskeletal [COFS] syndrome); CS type III, a milder and later-onset form; and COFS syndrome, a fetal form of CS. CS type I is characterized by normal prenatal growth with the onset of growth and developmental abnormalities in the first two years. By the time the disease has become fully manifest, height, weight, and head circumference are far below the fifth percentile. Progressive impairment of vision, hearing, and central and peripheral nervous system function leads to severe disability; death typically occurs in the first or second decade. CS type II is characterized by growth failure at birth, with little or no postnatal neurologic development. Congenital cataracts or other structural anomalies of the eye may be present. Affected children have early postnatal contractures of the spine (kyphosis, scoliosis) and joints. Death usually occurs by age five years. CS type III is a phenotype in which major clinical features associated with CS only become apparent after age two years; growth and/or cognition exceeds the expectations for CS type I. COFS syndrome is characterized by very severe prenatal developmental anomalies (arthrogryposis and microphthalmia).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/155488">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_155512"><div><strong>FRAXE</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>155512</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0751157</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder-109 (MRX109) is characterized by mildly to moderately impaired intellectual development associated with learning difficulties, communication deficits, attention problems, hyperactivity, and autistic behavior (summary by Bensaid et al., 2009). The disorder, which is associated with a fragile site on chromosome Xq28 (FRAXE), can be caused either by silencing of the FMR2 gene as a consequence of a CCG expansion located upstream of this gene or by deletion within the gene (Stettner et al., 2011).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/155512">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_199598"><div><strong>UDPglucose-4-epimerase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>199598</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0751161</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Epimerase deficiency galactosemia (GALE deficiency galactosemia) is generally considered a continuum comprising several forms: Generalized. Enzyme activity is profoundly decreased in all tissues tested. Peripheral. Enzyme activity is deficient in red blood cells (RBC) and circulating white blood cells, but normal or near normal in all other tissues. Intermediate. Enzyme activity is deficient in red blood cells and circulating white blood cells and less than 50% of normal levels in other cells tested. Infants with generalized epimerase deficiency galactosemia develop clinical findings on a regular milk diet (which contains lactose, a disaccharide of galactose and glucose); manifestations include hypotonia, poor feeding, vomiting, weight loss, jaundice, hepatomegaly, liver dysfunction, aminoaciduria, and cataracts. Prompt removal of galactose/lactose from their diet resolves or prevents these acute symptoms. Longer-term features that may be seen in those with generalized epimerase deficiency include short stature, developmental delay, sensorineural hearing loss, and skeletal anomalies. In contrast, neonates with the peripheral or intermediate form generally remain clinically well even on a regular milk diet and are usually only identified by biochemical testing, often in newborn screening programs.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/199598">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_199606"><div><strong>Classic homocystinuria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>199606</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0751202</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Homocystinuria caused by cystathionine ß-synthase (CBS) deficiency is characterized by involvement of the eye (ectopia lentis and/or severe myopia), skeletal system (excessive height, long limbs, scolioisis, and pectus excavatum), vascular system (thromboembolism), and CNS (developmental delay/intellectual disability). All four ? or only one ? of the systems can be involved; expressivity is variable for all of the clinical signs. It is not unusual for a previously asymptomatic individual to present in adult years with only a thromboembolic event that is often cerebrovascular. Two phenotypic variants are recognized, B6-responsive homocystinuria and B6-non-responsive homocystinuria. B6-responsive homocystinuria is usually milder than the non-responsive variant. Thromboembolism is the major cause of early death and morbidity. IQ in individuals with untreated homocystinuria ranges widely, from 10 to 138. In B6-responsive individuals the mean IQ is 79 versus 57 for those who are B6-non-responsive. Other features that may occur include: seizures, psychiatric problems, extrapyramidal signs (e.g., dystonia), hypopigmentation of the skin and hair, malar flush, livedo reticularis, and pancreatitis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/199606">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_155549"><div><strong>Neuronal ceroid lipofuscinosis 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>155549</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0751383</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The clinical course includes progressive dementia, seizures, and progressive visual failure (Mole et al., 2005).&#13; The hallmark of CLN3 is the ultrastructural pattern of lipopigment with a 'fingerprint' profile, which can have 3 different appearances: pure within a lysosomal residual body; in conjunction with curvilinear or rectilinear profiles; and as a small component within large membrane-bound lysosomal vacuoles. The combination of fingerprint profiles within lysosomal vacuoles is a regular feature of blood lymphocytes from patients with CLN3 (Mole et al., 2005).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of CLN, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/155549">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_155630"><div><strong>Dentatorubral-pallidoluysian atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>155630</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0751781</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">DRPLA (dentatorubral-pallidoluysian atrophy) is a progressive neurologic disorder characterized by five cardinal features (irrespective of the age of onset): ataxia, cognitive decline, myoclonus, chorea, epilepsy, and psychiatric manifestations. Onset ranges from infancy to late adulthood (range: age 0-72 years; mean: age 31.5 years). The clinical presentation varies by age of onset: individuals with juvenile onset (before age 20 years) have myoclonus, epilepsy, and progressive intellectual deterioration, whereas individuals with adult onset (after age 20 years) have ataxia, choreoathetosis, and dementia or neuropsychiatric changes. Disease duration is on average eight years (range: 0-35 years) and age at death is on average 49 years (range: age 18-80 years).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/155630">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167070"><div><strong>Recombinant 8 syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167070</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795822</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Recombinant chromosome 8 syndrome (Rec8 syndrome) is a chromosomal disorder found among individuals of Hispanic descent with ancestry from the San Luis Valley of southern Colorado and northern New Mexico. Affected individuals typically have impaired intellectual development, congenital heart defects, seizures, a characteristic facial appearance with hypertelorism, thin upper lip, anteverted nares, wide face, and abnormal hair whorl, and other manifestations (Sujansky et al., 1993, summary by Graw et al., 2000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167070">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167073"><div><strong>Chromosome 9p deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167073</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795830</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare chromosomal anomaly with characteristics of psychomotor developmental delay, facial dysmorphism (trigonocephaly, midface hypoplasia, upslanting palpebral fissures, dysplastic small ears, flat nasal bridge with anteverted nostrils and long philtrum, micrognathia, choanal atresia, short neck), single umbilical artery, omphalocele, inguinal or umbilical hernia, genital abnormalities (hypospadia, cryptorchidism), muscular hypotonia and scoliosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167073">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208639"><div><strong>Kleefstra syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208639</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795833</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Kleefstra syndrome is characterized by intellectual disability, autistic-like features, childhood hypotonia, and distinctive facial features. The majority of individuals function in the moderate-to-severe spectrum of intellectual disability although a few individuals have mild delay and total IQ within low-normal range. While most have severe expressive speech delay with little speech development, general language development is usually at a higher level, making nonverbal communication possible. A complex pattern of other findings can also be observed; these include heart defects, renal/urologic defects, genital defects in males, severe respiratory infections, epilepsy / febrile seizures, psychiatric disorders, and extreme apathy or catatonic-like features after puberty.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208639">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162878"><div><strong>11q partial monosomy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162878</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795841</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Jacobsen syndrome (JBS) is a contiguous gene deletion syndrome with major clinical features of growth retardation, psychomotor retardation, trigonocephaly, divergent intermittent strabismus, epicanthus, telecanthus, broad nasal bridge, short nose with anteverted nostrils, carp-shaped upper lip, retrognathia, low-set dysmorphic ears, bilateral camptodactyly, hammertoes, and isoimmune thrombocytopenia (Fryns et al., 1986, Epstein, 1986).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162878">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162881"><div><strong>Smith-Magenis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162881</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795864</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Smith-Magenis syndrome (SMS) is characterized by distinctive physical features (particularly coarse facial features that progress with age), developmental delay, cognitive impairment, behavioral abnormalities, sleep disturbance, and childhood-onset abdominal obesity. Infants have feeding difficulties, failure to thrive, hypotonia, hyporeflexia, prolonged napping or need to be awakened for feeds, and generalized lethargy. The majority of individuals function in the mild-to-moderate range of intellectual disability. The behavioral phenotype, including significant sleep disturbance, stereotypies, and maladaptive and self-injurious behaviors, is generally not recognized until age 18 months or older and continues to change until adulthood. Sensory issues are frequently noted; these may include avoidant behavior, as well as repetitive seeking of textures, sounds, and experiences. Toileting difficulties are common. Significant anxiety is common as are problems with executive functioning, including inattention, distractibility, hyperactivity, and impulsivity. Maladaptive behaviors include frequent outbursts / temper tantrums, attention-seeking behaviors, opposition, aggression, and self-injurious behaviors including self-hitting, self-biting, skin picking, inserting foreign objects into body orifices (polyembolokoilamania), and yanking fingernails and/or toenails (onychotillomania). Among the stereotypic behaviors described, the spasmodic upper-body squeeze or "self-hug" seems to be highly associated with SMS. An underlying developmental asynchrony, specifically emotional maturity delayed beyond intellectual functioning, may also contribute to maladaptive behaviors in people with SMS.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162881">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162886"><div><strong>Autism, susceptibility to, X-linked 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162886</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795888</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Autism, the prototypic pervasive developmental disorder (PDD), is usually apparent by 3 years of age. It is characterized by a triad of limited or absent verbal communication, a lack of reciprocal social interaction or responsiveness, and restricted, stereotypical, and ritualized patterns of interests and behavior (Bailey et al., 1996; Risch et al., 1999). 'Autism spectrum disorder,' sometimes referred to as ASD, is a broader phenotype encompassing the less severe disorders Asperger syndrome (see ASPG1; 608638) and pervasive developmental disorder, not otherwise specified (PDD-NOS). 'Broad autism phenotype' includes individuals with some symptoms of autism, but who do not meet the full criteria for autism or other disorders. Mental retardation coexists in approximately two-thirds of individuals with ASD, except for Asperger syndrome, in which mental retardation is conspicuously absent (Jones et al., 2008). Genetic studies in autism often include family members with these less stringent diagnoses (Schellenberg et al., 2006).&#13; Levy et al. (2009) provided a general review of autism and autism spectrum disorder, including epidemiology, characteristics of the disorder, diagnosis, neurobiologic hypotheses for the etiology, genetics, and treatment options.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162886">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162891"><div><strong>Charcot-Marie-Tooth disease X-linked recessive 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162891</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795910</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked recessive Charcot-Marie-Tooth disease-4 with or without cerebellar ataxia (CMTX4) is a mitochondrial disorder manifest as progressive neurologic dysfunction with highly variable features. The age at onset ranges from infancy to young adulthood, and patients can present with different features, including hearing loss, delayed motor development, or difficulty walking due to peripheral neuropathy and/or cerebellar ataxia. Most patients develop all features, including a progressive sensorimotor axonal neuropathy and deafness due to auditory neuropathy. Additional more variable features can include cognitive impairment, cerebellar atrophy on brain imaging, cerebellar signs, such as dysarthria, abnormal extraocular movements, tremor, and dysmetria, as well as spasticity. There is significant intrafamilial variability: the variable features are consistent with mitochondrial dysfunction. Prolonged treatment with riboflavin may result in some mild improvement in the ataxia (summary by Rinaldi et al., 2012, Heimer et al., 2018, Bogdanova-Mihaylova et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162891">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167082"><div><strong>Cataract-nephropathy-encephalopathy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167082</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795914</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A lethal combination of manifestations including short stature, congenital cataracts, encephalopathy with epileptic fits and postmortem confirmation of nephropathy (renal tubular necrosis). The combination has been described in 2 female infant children of first cousin parents. The infants did not survive beyond 4 and 8 months respectively. There have been no further descriptions in the literature since 1963.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167082">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167084"><div><strong>Edinburgh malformation syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167084</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795933</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic lethal multiple congenital anomalies/dysmorphic syndrome characterized by consistently abnormal facial appearance, true or apparent hydrocephalus, motor and cognitive developmental delay, failure to thrive (feeding difficulties, vomiting, chest infections) and death within a few months of birth. Carp mouth, hairiness of the forehead, neonatal hyperbilirubinemia and advanced bone age may also be associated. There have been no further descriptions in the literature since 1991.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167084">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208648"><div><strong>DOORS syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208648</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795934</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">TBC1D24-related disorders comprise a continuum of features that were originally described as distinct, recognized phenotypes: DOORS syndrome (deafness, onychodystrophy, osteodystrophy, mental retardation, and seizures), with profound sensorineural hearing loss, onychodystrophy, osteodystrophy, intellectual disability / developmental delay, and seizures; familial infantile myoclonic epilepsy (FIME), with early-onset myoclonic seizures, focal epilepsy, dysarthria, and mild-to-moderate intellectual disability; progressive myoclonus epilepsy (PME), with action myoclonus, tonic-clonic seizures, ataxia, and progressive neurologic decline; rolandic epilepsy with paroxysmal exercise-induced dystonia and writer's cramp (EPRPDC); developmental and epileptic encephalopathy (DEE), including epilepsy of infancy with migrating focal seizures (EIMFS); autosomal recessive nonsyndromic hearing loss (DFNB); and autosomal dominant nonsyndromic hearing loss (DFNA).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208648">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163197"><div><strong>Filippi syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163197</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795940</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Filippi syndrome is characterized by short stature, microcephaly, syndactyly, intellectual disability, and facial dysmorphism consisting of bulging forehead, broad and prominent nasal bridge, and diminished alar flare. Common features include cryptorchidism, speech impairment, and clinodactyly of the fifth finger, Some patients exhibit visual disturbances, polydactyly, seizures, and/or ectodermal abnormalities, such as nail hypoplasia, long eyelashes, hirsutism, and microdontia (summary by Hussain et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163197">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163198"><div><strong>Fine-Lubinsky syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163198</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795941</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome with characteristics of psychomotor delay, brachycephaly with flat face, small nose, microstomia, cleft palate, cataract, hearing loss, hypoplastic scrotum and digital anomalies. Less than 10 patients have been described in the literature so far. Although the majority of reported cases were sporadic, the syndrome has been reported in one pair of siblings (a brother and sister) with an apparently autosomal recessive inheritance pattern.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163198">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208650"><div><strong>Fountain syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208650</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795944</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An extremely rare multi-systemic genetic disorder with characteristics of intellectual disability, deafness, skeletal abnormalities and coarse facial features.The syndrome is exceedingly rare and has been reported in only a few patients to date. Male and female patients have been described. The main clinical features include moderate to severe intellectual deficit, congenital sensorineural hearing impairment and broad, stubby hands and feet. A coarse face with full lips and cheeks is also found. These signs are reported to become more prominent with age. The pattern of inheritance appears to be autosomal recessive.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208650">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162893"><div><strong>Agenesis of the corpus callosum with peripheral neuropathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162893</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795950</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary motor and sensory neuropathy with agenesis of the corpus callosum (HMSN/ACC), a neurodevelopmental and neurodegenerative disorder, is characterized by severe progressive sensorimotor neuropathy with resulting hypotonia, areflexia, and amyotrophy, and by variable degrees of dysgenesis of the corpus callosum. Mild-to-severe intellectual disability and "psychotic episodes" during adolescence are observed. Sensory modalities are moderately to severely affected beginning in infancy. The average age of onset of walking is 3.8 years; the average age of loss of walking is 13.8 years; the average age of death is 33 years.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162893">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162894"><div><strong>MASA syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162894</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795953</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">L1 syndrome involves a phenotypic spectrum ranging from severe to mild and includes three clinical phenotypes: X-linked hydrocephalus with stenosis of the aqueduct of Sylvius (HSAS). MASA (mental retardation [intellectual disability], aphasia [delayed speech], spastic paraplegia [shuffling gait], adducted thumbs) syndrome including X-linked complicated hereditary spastic paraplegia type 1. X-linked complicated corpus callosum agenesis. Males with HSAS are born with severe hydrocephalus, adducted thumbs, and spasticity; intellectual disability is severe. In less severely affected males, hydrocephalus may be subclinically present and documented only because of developmental delay; intellectual disability ranges from mild (IQ: 50-70) to moderate (IQ: 30-50). It is important to note that all phenotypes can be observed in affected individuals within the same family.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162894">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208651"><div><strong>Chylomicron retention disease</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208651</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795956</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Chylomicron retention disease (CMRD), characterized by the inability to secrete chylomicrons from the enterocytes following the ingestion of fat, typically presents in infancy with failure to thrive, diarrhea, vomiting, abdominal distention, and malabsorption of fat. This leads to steatorrhea – the severity of which relates to the fat content of the diet – and in some cases, hepatomegaly. Organ systems outside of the gastrointestinal tract may also be affected (often due to malnutrition and deficiencies of fat-soluble vitamins), including neuromuscular abnormalities (typically in the first or second decade of life) secondary to vitamin E deficiency, poor bone mineralization and delayed bone maturation due to vitamin D deficiency, prolonged international normalized ratio (INR) due to vitamin K deficiency, mild ophthalmologic issues (e.g., micronystagmus, delayed dark adaptation, abnormal visual evoked potentials, and abnormal scotopic electroretinograms), and (in a small proportion of adults) cardiomyopathy with decreased ejection fraction. Affected individuals typically have marked hypocholesterolemia, low plasma apolipoprotein B levels, normal-to-low plasma triglyceride levels, and low serum concentrations of fat-soluble vitamins (A, D, E, and K). Endoscopy typically demonstrates a gelée blanche ("white hoar frosting") appearance of the duodenal mucosa.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208651">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167088"><div><strong>Severe X-linked intellectual disability, Gustavson type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167088</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795965</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The Gustavson type of X-linked syndromic intellectual developmental disorder (MRXSG) is characterized by intrauterine growth retardation, microcephaly, hypotonia, and severe global developmental delay, usually resulting in death in infancy or early childhood. Affected males have profoundly impaired intellectual development with absent speech, poor reaction to stimuli, optic atrophy, deafness, seizures, spasticity, and restriction of the large joints. Female carriers are usually unaffected due to skewed X inactivation that silences the pathogenic allele, although 1 severely affected female has been reported (Johansson et al., 2024).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167088">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167089"><div><strong>Bullous dystrophy, macular type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167089</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0795974</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary bullous dystrophy of the macular type (HBDM) is a rare X-linked recessive disorder characterized by the formation of bullae without evident trauma, hyper- and hypopigmentation, absence of hair at birth, and, in some cases, microcephaly, mildly impaired intellectual development, short conic fingers, and aberrations of nails (summary by Wijker et al., 1995).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167089">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162897"><div><strong>Kabuki syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162897</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796004</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Kabuki syndrome (KS) is characterized by typical facial features (long palpebral fissures with eversion of the lateral third of the lower eyelid; arched and broad eyebrows; short columella with depressed nasal tip; large, prominent, or cupped ears), minor skeletal anomalies, persistence of fetal fingertip pads, mild-to-moderate intellectual disability, and postnatal growth deficiency. Other findings may include: congenital heart defects, genitourinary anomalies, cleft lip and/or palate, gastrointestinal anomalies including anal atresia, ptosis and strabismus, and widely spaced teeth and hypodontia. Functional differences can include: increased susceptibility to infections and autoimmune disorders, seizures, endocrinologic abnormalities (including isolated premature thelarche in females), feeding problems, and hearing loss.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162897">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208655"><div><strong>Kifafa seizure disorder</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208655</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796010</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A convulsive seizure disorder observed in an isolated tribe in the interior of Tanzania. It is a chronic degenerative disorder of the central nervous system associated with seizures and other neurological complications, characteristic facies, psychomotor retardation, and pachyderma. Kifafa is a Swahili word meaning ""being half-dead and rigid.""</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208655">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162898"><div><strong>Microphthalmia, syndromic 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162898</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796016</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Microphthalmia-ankyloblepharon-intellectual disability syndrome is characterized by microphthalmia, ankyloblepharon and intellectual deficit. It has been described in seven male patients from two generations of a Northern Ireland family. The causative gene is localized to the Xq27-q28 region. The syndrome is transmitted as an X-linked recessive trait.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162898">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167095"><div><strong>Lowry-MacLean syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167095</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796020</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A very rare syndrome with characteristics of microcephaly, craniosynostosis, glaucoma, growth failure and visceral malformations. Only three cases have been reported in the literature in three unrelated families. Dysmorphic features include trigonocephaly, exotropia, cleft palate, beaked nose and low-set ears. All the affected patients have associated congenital visceral malformations including congenital heart defects, diaphragmatic hernia, genital or cerebral abnormalities. The demonstration of congenital glaucoma, hallmark of the syndrome, in the father of an affected patient, supports autosomal dominant inheritance. Prognosis is poor.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167095">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167096"><div><strong>X-linked intellectual disability with marfanoid habitus</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167096</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796022</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MED12-related disorders include the phenotypes of FG syndrome type 1 (FGS1), Lujan syndrome (LS), X-linked Ohdo syndrome (XLOS), Hardikar syndrome (HS), and nonspecific intellectual disability (NSID). FGS1 and LS share the clinical findings of cognitive impairment, hypotonia, and abnormalities of the corpus callosum. FGS1 is further characterized by absolute or relative macrocephaly, tall forehead, downslanted palpebral fissures, small and simple ears, constipation and/or anal anomalies, broad thumbs and halluces, and characteristic behavior. LS is further characterized by large head, tall thin body habitus, long thin face, prominent nasal bridge, high narrow palate, and short philtrum. Carrier females in families with FGS1 and LS are typically unaffected. XLOS is characterized by intellectual disability, blepharophimosis, and facial coarsening. HS has been described in females with cleft lip and/or cleft palate, biliary and liver anomalies, intestinal malrotation, pigmentary retinopathy, and coarctation of the aorta. Developmental and cognitive concerns have not been reported in females with HS. Pathogenic variants in MED12 have been reported in an increasing number of males and females with NSID, with affected individuals often having clinical features identified in other MED12-related disorders.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167096">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167097"><div><strong>Lysine malabsorption syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167097</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796023</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Lysine malabsorption with severe malnourishment, extreme flaccidity, and psychomotor retardation.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167097">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163205"><div><strong>Arts syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163205</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796028</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Phosphoribosylpyrophosphate synthetase (PRS) deficiency, an X-linked disorder, is a phenotypic continuum comprising three disorders previously thought to be clinically distinct: Arts syndrome, Charcot-Marie-Tooth neuropathy X type 5 (CMTX5), and X-linked nonsyndromic sensorineural hearing loss (DFNX1). In affected males, the PRS deficiency phenotypic spectrum ranges from severe congenital profound sensorineural hearing loss, intellectual disability, delayed motor development, and progressive ophthalmologic involvement (retinal dystrophy and optic atrophy) to normal cognitive abilities and relatively later-onset, somewhat milder manifestations, such as mild sensorineural hearing loss, peripheral neuropathy, and gait ataxia. Heterozygous females can show isolated and/or milder manifestations in the PRS deficiency spectrum. To date, 40 families with PRS deficiency have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163205">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162901"><div><strong>Dilated cardiomyopathy-hypergonadotropic hypogonadism syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162901</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796031</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">This syndrome is characterized by the association of dilated cardiomyopathy and hypergonadotropic hypogonadism (DCM-HH).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162901">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208657"><div><strong>3MC syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208657</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796032</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The term '3MC syndrome' encompasses 4 rare autosomal recessive disorders that were previously designated the Carnevale, Mingarelli, Malpuech, and Michels syndromes, respectively. The main features of these syndromes are facial dysmorphism that includes hypertelorism, blepharophimosis, blepharoptosis, and highly arched eyebrows, which are present in 70 to 95% of cases. Cleft lip and palate, postnatal growth deficiency, cognitive impairment, and hearing loss are also consistent findings, occurring in 40 to 68% of cases. Craniosynostosis, radioulnar synostosis, and genital and vesicorenal anomalies occur in 20 to 30% of cases. Rare features include anterior chamber defects, cardiac anomalies, caudal appendage, umbilical hernia (omphalocele), and diastasis recti (summary by Rooryck et al., 2011).&#13; For a discussion of genetic heterogeneity of 3MC syndrome, see 3MC1 (257920).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208657">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163206"><div><strong>Marden-Walker syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163206</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796033</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Marden-Walker syndrome (MWKS) is characterized by psychomotor retardation, a mask-like face with blepharophimosis, micrognathia and a high-arched or cleft palate, low-set ears, kyphoscoliosis, and joint contractures. Other features may include Dandy-Walker malformation with hydrocephalus and vertebral abnormalities (summary by Schrander-Stumpel et al., 1993).&#13; There are 2 distal arthrogryposis syndromes with features overlapping those of Marden-Walker syndrome that are also caused by heterozygous mutation in PIEZO2: distal arthrogryposis type 3 (DA3, or Gordon syndrome; 114300) and distal arthrogryposis type 5 (DA5; 108145), which are distinguished by the presence of cleft palate and ocular abnormalities, respectively. McMillin et al. (2014) suggested that the 3 disorders may represent variable expressivity of the same condition.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163206">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208659"><div><strong>Ataxia - deafness - intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208659</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796045</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic syndromic intellectual disability characterized by global developmental delay, intellectual disability, infantile or childhood onset of progressive ataxia, and bilateral sensorineural hearing impairment. Variable features include signs of upper and lower motor neuron disease, peripheral neuropathy, myopathic facies, lower limb muscle wasting, and heel contractures. There have been no further descriptions in the literature since 1993.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208659">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208660"><div><strong>Skeletal dysplasia-epilepsy-short stature syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208660</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796046</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Moderate to severe intellectual deficit, seizures, short stature, and skeletal dysplasia. Other manifestations can be associated (retinal abnormalities, brachydactyly, prognathism, dental malocclusion). It is transmitted as an autosomal recessive trait.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208660">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208661"><div><strong>Encephalopathy due to beta-mercaptolactate-cysteine disulfiduria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208661</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796055</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An extremely rare disorder of methionine cycle and sulfur amino acid metabolism with characteristics of increased urine excretion of beta-mercaptolactate-cysteine disulfide (due to deficiency of mercaptopyruvate sulfurtransferase activity in erythrocytes), leading to a positive cyanide nitroprusside test. Association with intellectual disability, congenital lens dislocation, and behavioral abnormalities has been reported, however the causal link remains to be established. There have been no further descriptions in the literature since 1981.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208661">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167100"><div><strong>3MC syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167100</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796059</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The term '3MC syndrome' encompasses 4 rare autosomal recessive disorders that were previously designated the Carnevale, Mingarelli, Malpuech, and Michels syndromes, respectively. The main features of these syndromes are facial dysmorphism that includes hypertelorism, blepharophimosis, blepharoptosis, and highly arched eyebrows, which are present in 70 to 95% of cases. Cleft lip and palate, postnatal growth deficiency, cognitive impairment, and hearing loss are also consistent findings, occurring in 40 to 68% of cases. Craniosynostosis, radioulnar synostosis, and genital and vesicorenal anomalies occur in 20 to 30% of cases. Rare features include anterior chamber defects, cardiac anomalies, caudal appendage, umbilical hernia (omphalocele), and diastasis recti (summary by Rooryck et al., 2011).&#13; Genetic Heterogeneity of 3MC Syndrome&#13; Also see 3MC syndrome-2 (3MC2; 265050), caused by mutation in the COLEC11 gene (612502), and 3MC syndrome-3 (3MC3; 248340), caused by mutation in the COLEC1 gene (607620).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167100">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_810673"><div><strong>Jawad syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>810673</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796063</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Jawad syndrome (JWDS) is an autosomal recessive disorder characterized by congenital microcephaly, moderately to severely impaired intellectual development, and digital malformations including phalangeal joint swelling, clinodactyly, polydactyly, syndactyly, and total absence of nails (summary by Qvist et al., 2011).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/810673">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208663"><div><strong>Microcephaly-cervical spine fusion anomalies syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208663</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796066</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A very rare disorder, features include microcephaly, facial dysmorphism (beaked nose, low-set ears, downslanting palpebral fissures, micrognathia), mild intellectual deficit, short stature, and cervical spine fusion anomalies producing spinal cord compression.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208663">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163210"><div><strong>Linear skin defects with multiple congenital anomalies 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163210</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796070</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Microphthalmia with linear skin defects (MLS) syndrome is characterized by unilateral or bilateral microphthalmia and/or anophthalmia and linear skin defects, usually involving the face and neck, which are present at birth and heal with age, leaving minimal residual scarring. Other findings can include a wide variety of other ocular abnormalities (e.g., corneal anomalies, orbital cysts, cataracts), central nervous system involvement (e.g., structural anomalies, developmental delay, infantile seizures), cardiac concerns (e.g., hypertrophic or oncocytic cardiomyopathy, atrial or ventricular septal defects, arrhythmias), short stature, diaphragmatic hernia, nail dystrophy, hearing impairment, and genitourinary malformations. Inter- and intrafamilial variability is described.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163210">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167103"><div><strong>Myhre syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167103</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796081</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Myhre syndrome is a multisystem progressive connective tissue disorder that often results in significant complications. The highly distinctive (and often severe) findings of joint stiffness, restrictive lung and cardiovascular disease, progressive and proliferative fibrosis, and thickening of the skin usually occur spontaneously. Some proliferation such as abnormal scarring or adhesions may follow trauma, invasive medical procedures, or surgery. Effusions of the heart, airways, lungs, uterus, and peritoneum may occur and can progress to fibrosis. Most affected individuals have characteristic facial features (short palpebral fissures, deeply set eyes, maxillary underdevelopment, short philtrum, thin vermilion of the upper lip, narrow mouth, and prognathism) and developmental delay / cognitive disability, typically in the mild-to-moderate range. Neurobehavioral issues may include autism spectrum disorder (ASD), attention-deficit/hyperactivity disorder (ADHD), and/or anxiety. Although immunoglobulin (Ig) G and IgA deficiency are rare, affected individuals can experience recurrent infections (including otitis media, sinusitis, mastoiditis, or croup). Hearing loss can progress over time. Growth may be impaired in early life. Most adolescents develop obesity. Eye findings can include refractive errors, astigmatism, corectopia, and optic nerve anomalies. Gastrointestinal (GI) issues may include gastroesophageal reflux disease, constipation, and encopresis. Less commonly, stenosis of the GI tract, Hirschsprung disease, and/or metabolic dysfunction-associated liver disease may be observed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167103">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162904"><div><strong>Megalocornea-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162904</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796086</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The cardinal findings of Neuhauser syndrome, also known as MMR syndrome, are impaired intellectual development or developmental delay, megalocornea, hypotonia, prominent forehead, micrognathia, prominent nasal bridge, and thin upper lip or carp-like mouth (Naritomi et al., 1997).&#13; Reviews&#13; Gutierrez-Amavizca et al. (2013) reviewed published reports and tabulated the clinical features of 35 patients with Neuhauser syndrome. Primary megalocornea and psychomotor delay were present in all patients. Characteristics observed in more than half of patients included hypotonia, growth retardation, abnormal electroencephalography (EEG) and/or seizures, micro- or macrocephaly, brain malformations such as cerebral atrophy and hypoplastic corpus callosum, craniofacial dysmorphisms, cardiac anomalies, osteoarticular abnormalities, and refractive errors. Additional features found at low frequency included primary hypothyroidism, recurrent infections, feeding difficulties, cerebral hypomyelination, dyslipidemia, sensorineural deafness, laryngomalacia, large fleshy and cup-shaped ears, obesity, and cryptorchidism. The authors stated that the classification suggested by Verloes et al. (1993) did not seem to be applicable, and proposed that the diagnosis of Neuhauser syndrome should be made in the presence of intellectual disability and megalocornea in the absence of elevated intraocular pressure, with at least 1 minor feature from among those observed in more than half of patients.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162904">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163214"><div><strong>Oculocerebrocutaneous syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163214</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796092</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare neurologic disease typically characterized by the triad of eye, central nervous system and skin malformations, and often associated with an intellectual disability.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163214">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162905"><div><strong>Blepharophimosis - intellectual disability syndrome, Ohdo type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162905</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796094</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare multiple congenital malformation syndrome with characteristics of blepharophimosis, ptosis, dental hypoplasia, hearing impairment and intellectual disability. Abnormal ears, microcephaly, and growth retardation have been reported occasionally. Male patients may show cryptorchidism and scrotal hypoplasia. Most reported cases are sporadic, except the original cases of Ohdo who described two affected sisters and a first cousin, suggesting autosomal recessive inheritance. Autosomal dominant, X-linked- and mitochondrial inheritance have also been suggested.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162905">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162906"><div><strong>Juberg-Hayward syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162906</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796099</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Juberg-Hayward syndrome (JHS) is characterized by cleft lip and palate, rhizomelia of the upper limbs with limited elbow extension due to humeroradial synostosis or dislocation of the radial head, and digital anomalies, including shortened thumbs and index and fifth fingers. Microcephaly has been observed in some patients (Kantaputra et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162906">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162911"><div><strong>Primrose syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162911</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796121</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Primrose syndrome is characterized by macrocephaly, hypotonia, developmental delay, intellectual disability with expressive speech delay, behavioral issues, a recognizable facial phenotype, radiographic features, and altered glucose metabolism. Additional features seen in adults: sparse body hair, distal muscle wasting, and contractures. Characteristic craniofacial features include brachycephaly, high anterior hairline, deeply set eyes, ptosis, downslanted palpebral fissures, high palate with torus palatinus, broad jaw, and large ears with small or absent lobes. Radiographic features include calcification of the external ear cartilage, multiple wormian bones, platybasia, bathrocephaly, slender bones with exaggerated metaphyseal flaring, mild epiphyseal dysplasia, and spondylar dysplasia. Additional features include hearing impairment, ocular anomalies, cryptorchidism, and nonspecific findings on brain MRI.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162911">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163218"><div><strong>Pseudoprogeria syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163218</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796125</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome with characteristics of intellectual deficit associated with progressive spastic quadriplegia, microcephaly, and glaucoma, absence of the eyebrows and eyelashes, and a malformation of the nose. It has been described in two brothers.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163218">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208669"><div><strong>Ramon syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208669</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796133</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare, genetic, primary bone dysplasia syndrome characterized by bilateral, painless swelling of the face extending from the mandible to the inferior orbital margins (cherubism), epilepsy, gingival fibromatosis (possibly obscuring teeth), and intellectual disability. Other associated variable features include hypertrichosis, stunted growth, juvenile rheumatoid arthritis, and development of ocular abnormalities (e.g. pigmentary retinopathy, optic disc pallor, Axenfeld anomaly). Radiological images typically show bilateral multifocal radiolucency involving the body, angle and ramus of the mandible and coronoid process.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208669">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208670"><div><strong>Renpenning syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208670</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796135</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Renpenning syndrome (RENS1) is an X-linked syndromic intellectual developmental disorder with clinically recognizable features. Affected individuals have microcephaly, short stature, small testes, and dysmorphic facies, including tall narrow face, upslanting palpebral fissures, abnormal nasal configuration, cupped ears, and short philtrum. The nose may appear long or bulbous, with overhanging columella. Less consistent manifestations include ocular colobomas, cardiac malformations, cleft palate, and anal anomalies. Stevenson et al. (2005) proposed that the various X-linked mental retardation syndromes due to PQBP1 mutations be combined under the name of Renpenning syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208670">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162914"><div><strong>Microbrachycephaly-ptosis-cleft lip syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162914</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796142</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Richieri-Costa/Guion-Almeida syndrome is characterized by mildly impaired intellectual development, short stature, microbrachycephaly, ptosis, esotropia, and cleft lip/palate (Richieri-Costa and Guion-Almeida, 1992).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162914">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162915"><div><strong>Acrocallosal syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162915</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796147</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162915">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162918"><div><strong>Syndromic X-linked intellectual disability Snyder type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162918</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796160</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Snyder-Robinson syndrome (SRS) is an X-linked intellectual disability syndrome characterized by asthenic build, facial dysmorphism with a prominent lower lip, kyphoscoliosis, osteoporosis, speech abnormalities, and seizures. Developmental delay usually presents as failure to meet early developmental milestones and then evolves to moderate to profound intellectual disability (which appears to remain stable over time) and variable motor disability. Asthenic habitus and low muscle mass usually develop during the first year, even in males who are ambulatory. During the first decade, males with SRS develop osteoporosis, resulting in fractures in the absence of trauma.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162918">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167108"><div><strong>Congenital heart defect-round face-developmental delay syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167108</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796162</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A very rare syndrome described in three siblings of one Japanese family with main features of congenital heart disease, round face with depressed nasal bridge, small mouth, short stature, and relatively dark skin and typical dermatoglyphic anomalies, and intellectual deficit.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167108">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163225"><div><strong>Toriello-Carey syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163225</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796184</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Toriello-Carey syndrome is a multiple congenital anomaly disorder with variable systemic manifestations, most commonly including mental retardation, agenesis of the corpus callosum, postnatal growth delay, cardiac defects, usually septal defects, distal limb defects, and urogenital anomalies in affected males. Patients have facial dysmorphic features, micrognathia, including full cheeks, hypertelorism, flattened nasal bridge, anteverted nares, and short neck. Not all features are found in all patients and some patients may have additional features such as anal anomalies or hernias (summary by Toriello et al., 2003).&#13; In a review of the Toriello-Carey syndrome, Toriello et al. (2016) stated that while corpus callosum abnormalities and micrognathia with highly arched or cleft palate are seen in most patients, other manifestations are widely variable. They noted that etiologic heterogeneity has been observed in reported patients, with at least 20% of patients having chromosome anomalies, and that no good candidate genes have been identified by exome sequencing. The authors commented that this condition might not be a unitary diagnostic entity. They recommended chromosome microarray for any child suspected of having the condition, followed by standard of care by genetic testing.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163225">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162920"><div><strong>Van den Bosch syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162920</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796192</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome that is characterised by intellectual deficit, choroideraemia, acrokeratosis verruciformis, anhidrosis, and skeletal deformities. It has been observed in a single kindred. The syndrome is transmitted as an X-linked recessive trait and may be caused by a small X-chromosome deletion.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162920">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163226"><div><strong>Blepharonasofacial malformation syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163226</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796197</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare otorhinolaryngological malformation syndrome with characteristics of a distinctive mask-like facial dysmorphism, lacrimal duct obstruction, extrapyramidal features, digital malformations and intellectual disability. Reported in 3 families to date. The facies has a mask-like appearance due to weakness of facial muscles and lacrimal duct obstruction is characteristic. Clinical features also include telecanthus, bulky nose, broad nasal bridge, sometimes a hypoplastic midface, longitudinal cheek furrows, trapezoidal upper lip and malformation of the ears. Intellectual disability, cutaneous syndactyly, torsion dystonia, increased deep tendon reflexes; Babinski sign, poor coordination and joint laxity are also observed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163226">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_490089"><div><strong>Microcephaly-intellectual disability-phalangeal and neurological anomalies syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>490089</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796203</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">This syndrome is characterized by microcephaly, severe intellectual deficit, phalangeal anomalies (cutaneous syndactyly of the fingers, toe brachyclinodactyly and nail hypoplasia) and neurological manifestations (epilepsy, spastic/dystonic paraplegia and brisk reflexes).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/490089">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163228"><div><strong>Worster-Drought syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163228</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796204</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A form of cerebral palsy with characteristics of congenital pseudobulbar (suprabulbar) paresis manifesting as selective weakness of the lips, tongue and soft palate, dysphagia, dysphonia, drooling and jaw jerking. Mean age at diagnosis is 6 years. The main clinical features are spasticity and limited movements around the mouth and throat from an early age, and brisk jaw jerks. Most cases are sporadic but several families with more than one affected member have been reported. Inheritance in these families appeared to follow an autosomal dominant pattern with variable expression and penetrance.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163228">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_162922"><div><strong>Intellectual disability, X-linked 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>162922</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796207</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Nonsyndromic mental retardation with a large head, relatively short stature, highly arched palate, square facies, short hands and feet, and macroorchidism.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/162922">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167111"><div><strong>Methylmalonic acidemia with homocystinuria, type cblX</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167111</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796208</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Disorders of intracellular cobalamin metabolism have a variable phenotype and age of onset that are influenced by the severity and location within the pathway of the defect. The prototype and best understood phenotype is cblC; it is also the most common of these disorders. The age of initial presentation of cblC spans a wide range: In utero with fetal presentation of nonimmune hydrops, cardiomyopathy, and intrauterine growth restriction. Newborns, who can have microcephaly, poor feeding, and encephalopathy. Infants, who can have poor feeding and slow growth, neurologic abnormality, and, rarely, hemolytic uremic syndrome (HUS). Toddlers, who can have poor growth, progressive microcephaly, cytopenias (including megaloblastic anemia), global developmental delay, encephalopathy, and neurologic signs such as hypotonia and seizures. Adolescents and adults, who can have neuropsychiatric symptoms, progressive cognitive decline, thromboembolic complications, and/or subacute combined degeneration of the spinal cord.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167111">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167112"><div><strong>Intellectual disability, X-linked 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167112</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796215</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">X-linked intellectual developmental disorder-9 (XLID9) is characterized by moderately to severely impaired intellectual development. Some patients have also been reported with delayed motor development, seizures, and/or behavioral problems (Hamel et al., 1999; Froyen et al., 2007).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167112">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_901885"><div><strong>X-linked intellectual disability-short stature-overweight syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>901885</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796218</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Kumar-type X-linked syndromic intellectual developmental disorder (MRXSK) is an X-linked recessive disorder that shows phenotypic variability and multisystem involvement apparent from birth or early infancy. Most affected individuals are male, although 1 severely affected girl with a de novo THOC2 mutation has been reported. At the severe end of the spectrum, affected individuals have hypotonia, neonatal difficulties, failure to thrive with poor overall growth, feeding difficulties, respiratory insufficiency, visual impairment, profoundly impaired intellectual development with poor or absent speech, and motor abnormalities, such as inability to walk and hyperkinetic movements. Less severely affected individuals have mildly to moderately impaired intellectual development and speech delay. Additional features include behavioral abnormalities, hearing or visual defects, seizures, dysmorphic facial features, and brain imaging abnormalities (Kumar et al., 2015; Kumar et al., 2018; Kumar et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/901885">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163232"><div><strong>X-linked intellectual disability-psychosis-macroorchidism syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163232</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796222</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The spectrum of MECP2-related phenotypes in females ranges from classic Rett syndrome to variant Rett syndrome with a broader clinical phenotype (either milder or more severe than classic Rett syndrome) to mild learning disabilities; the spectrum in males ranges from severe neonatal encephalopathy to pyramidal signs, parkinsonism, and macroorchidism (PPM-X) syndrome to severe syndromic/nonsyndromic intellectual disability. Females: Classic Rett syndrome, a progressive neurodevelopmental disorder primarily affecting girls, is characterized by apparently normal psychomotor development during the first six to 18 months of life, followed by a short period of developmental stagnation, then rapid regression in language and motor skills, followed by long-term stability. During the phase of rapid regression, repetitive, stereotypic hand movements replace purposeful hand use. Additional findings include fits of screaming and inconsolable crying, autistic features, panic-like attacks, bruxism, episodic apnea and/or hyperpnea, gait ataxia and apraxia, tremors, seizures, and acquired microcephaly. Males: Severe neonatal-onset encephalopathy, the most common phenotype in affected males, is characterized by a relentless clinical course that follows a metabolic-degenerative type of pattern, abnormal tone, involuntary movements, severe seizures, and breathing abnormalities. Death often occurs before age two years.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163232">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208676"><div><strong>Intellectual disability, X-linked 19</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208676</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796225</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The phenotypic spectrum associated with RPS6KA3 pathogenic variants is a continuum. Coffin-Lowry syndrome (CLS) classically manifests in males with developmental delay, intellectual disability, neurologic manifestations (hypotonia, stimulus-induced drop attacks, spastic paraparesis, and seizures), musculoskeletal manifestations (kyphoscoliosis and pectus deformity), and characteristic craniofacial and hand findings. Dental issues, sensorineural hearing loss, and obstructive sleep apnea also occur. The milder end of the continuum in males includes neurodevelopmental disabilities with or without less pronounced multisystem involvement. Heterozygous females often exhibit clinical manifestations that can be consistent with clinically defined CLS but are typically less severe than those seen in affected males. Developmental delay and intellectual disability comprise the core phenotypic findings, and quality of life and prognosis are variably affected by the presence and severity of neurologic and musculoskeletal involvement.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208676">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208677"><div><strong>Intellectual disability, X-linked 20</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208677</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796226</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Impaired mental functioning occurs as an isolated feature or as part of many syndromes listed in the X-linked catalog. Impaired intellectual development that is not associated with other distinguishing features is referred to as 'nonspecific.'&#13; The Human Gene Mapping Nomenclature Committee (Mulley et al., 1992) proposed to designate each newly reported apparently unique X-linked mental retardation (MRX) family with gene symbols (e.g., MRX1, MRX2) if a minimal lod score of 2.0 was demonstrated between the MR locus and one or more X chromosome markers.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208677">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163234"><div><strong>Intellectual disability, X-linked 23</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163234</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796229</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Nonsyndromic mental retardation with speech disorders.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163234">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163235"><div><strong>Intellectual disability, X-linked 30</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163235</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796237</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the PAK3 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163235">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208679"><div><strong>Chromosome Xp11.22 duplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208679</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796238</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nonsyndromic mental retardation with delayed speech development and occasional strabismus and single palmar creases.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208679">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208681"><div><strong>Intellectual disability, X-linked, with or without seizures, arx-related</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208681</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796244</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder-29 (XLID29) is a nonspecific form of XLID. It is part of a phenotypic spectrum of disorders caused by mutation in the ARX gene comprising a nearly continuous series of developmental disorders ranging from lissencephaly (LISX2; 300215) to Proud syndrome (300004) to infantile spasms without brain malformations (DEE1; 308350) to Partington syndrome (309510) (Kato et al., 2004; Wallerstein et al., 2008).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208681">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163237"><div><strong>Partington syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163237</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796250</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Partington syndrome (PRTS) is an X-linked developmental disorder characterized by impaired intellectual development and variable movement disturbances. Partington syndrome is part of a phenotypic spectrum of disorders caused by mutation in the ARX gene comprising a nearly continuous series of developmental disorders ranging from hydranencephaly and lissencephaly (LISX2; 300215) to Proud syndrome (300004) to infantile spasms without brain malformations (see 308350) to nonsyndromic intellectual disability (300419). Although males with ARX mutations are often more severely affected, female mutation carriers may also be affected (Kato et al., 2004; Wallerstein et al., 2008).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163237">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_163238"><div><strong>Sabinas brittle hair syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>163238</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796271</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The principal features of Sabinas brittle hair syndrome, a form of nonphotosensitive trichothiodystrophy (TTDN; see 234050), include congenital hypotrichosis, mild to moderate onychodysplasia, varying mental retardation, and sterility. Ocular dysplasias are sometimes present and dentition is normal (Howell et al., 1980).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/163238">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_208683"><div><strong>Brunner syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>208683</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796275</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Brunner syndrome (BRNRS) is an X-linked recessive disorder characterized by impulsive aggressiveness and mildly impaired intellectual development associated with MAOA deficiency (Brunner et al., 1993).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/208683">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167115"><div><strong>3MC syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167115</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796279</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The term '3MC syndrome' encompasses 4 rare autosomal recessive disorders that were previously designated the Carnevale, Mingarelli, Malpuech, and Michels syndromes, respectively. The main features of these syndromes are facial dysmorphism that includes hypertelorism, blepharophimosis, blepharoptosis, and highly arched eyebrows, which are present in 70 to 95% of cases. Cleft lip and palate, postnatal growth deficiency, cognitive impairment, and hearing loss are also consistent findings, occurring in 40 to 68% of cases. Craniosynostosis, radioulnar synostosis, and genital and vesicorenal anomalies occur in 20 to 30% of cases. Rare features include anterior chamber defects, cardiac anomalies, caudal appendage, umbilical hernia (omphalocele), and diastasis recti (summary by Rooryck et al., 2011).&#13; For a discussion of genetic heterogeneity of 3MC syndrome, see 3MC1 (257920).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167115">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167116"><div><strong>Acromegaloid facial appearance syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167116</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796280</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Acromegaloid facial appearance (AFA) syndrome is a multiple congenital anomalies/dysmorphic syndrome with a probable autosomal dominant inheritance, characterized by a progressively coarse acromegaloid-like facial appearance with thickening of the lips and intraoral mucosa, large and doughy hands and, in some cases, developmental delay. AFA syndrome appears to be part of a phenotypic spectrum that includes hypertrichotic osteochondrodysplasia, Cantu type and hypertrichosis-acromegaloid facial appearance syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167116">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167117"><div><strong>Cataract-hypertrichosis-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167117</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0796282</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">This syndrome is characterized by congenital cataract, generalized hypertrichosis and intellectual deficit. It has been described in two Egyptian siblings born to consanguineous parents. It is transmitted as an autosomal recessive trait.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167117">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_923028"><div><strong>Elsahy-Waters syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>923028</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0809936</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The core phenotype of Elsahy-Waters syndrome consists of brachycephaly, facial asymmetry, marked hypertelorism, proptosis, blepharochalasis, midface hypoplasia, broad nose with concave nasal ridge, and prognathism; radicular dentin dysplasia with consequent obliterated pulp chambers, apical translucent cysts, recurrent infections, and early loss of teeth; vertebral fusions, particularly at C2-C3; and moderate mental retardation. Skin wrinkling over the glabellar region seems common, and in males, hypospadias has always been present. Inter- and intrafamilial variability has been reported regarding the presence of vertebral fusions, hearing loss, and dentigerous cysts. Midface hypoplasia, facial asymmetry, progressive dental anomalies, and impaired cognitive development become more evident in adulthood (summary by Castori et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/923028">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_167236"><div><strong>Oculodentodigital dysplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>167236</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0812437</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Oculodentodigital dysplasia (ODDD) is characterized by a typical facial appearance and variable involvement of the eyes, dentition, and fingers. Characteristic facial features include a narrow, pinched nose with hypoplastic alae nasi, prominent columella and thin anteverted nares together with a narrow nasal bridge, and prominent epicanthic folds giving the impression of hypertelorism. The teeth are usually small and carious. Typical eye findings include microphthalmia and microcornea. The characteristic digital malformation is complete syndactyly of the fourth and fifth fingers (syndactyly type III) but the third finger may be involved and associated camptodactyly is a common finding (summary by Judisch et al., 1979).&#13; Neurologic abnormalities are sometimes associated (Gutmann et al., 1991), and lymphedema has been reported in some patients with ODDD (Brice et al., 2013). See review by De Bock et al. (2013).&#13; Genetic Heterogeneity of Oculodentodigital Syndrome&#13; An autosomal recessive form of ODDD (257850) is also caused by mutation in the GJA1 gene, but the majority of cases are autosomal dominant.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/167236">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_164078"><div><strong>Schimke immuno-osseous dysplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>164078</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0877024</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Schimke immunoosseous dysplasia (SIOD) is characterized by spondyloepiphyseal dysplasia (SED) resulting in short stature, nephropathy, and T cell deficiency. Radiographic manifestations of SED include ovoid and mildly flattened vertebral bodies, small ilia with shallow dysplastic acetabular fossae, and small deformed capital femoral epiphyses. Nearly all affected individuals have progressive steroid-resistant nephropathy, usually developing within five years of the diagnosis of growth failure and terminating with end-stage renal disease. The majority of tested individuals have T cell deficiency and an associated risk for opportunistic infection, a common cause of death. SIOD involves a spectrum that ranges from an infantile or severe early-onset form with a greater risk of death during childhood to a juvenile or milder later-onset form with likely survival into adulthood if renal disease is appropriately treated.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/164078">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_209235"><div><strong>Danon disease</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>209235</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0878677</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Danon disease is a multisystem condition with predominant involvement of the heart, skeletal muscles, and retina, with overlying cognitive dysfunction. Males are typically more severely affected than females. Males usually present with childhood onset concentric hypertrophic cardiomyopathy that is progressive and often requires heart transplantation. Rarely, hypertrophic cardiomyopathy can evolve to resemble dilated cardiomyopathy. Most affected males also have cardiac conduction abnormalities. Skeletal muscle weakness may lead to delayed acquisition of motor milestones. Learning disability and intellectual disability, most often in the mild range, are common. Additionally, affected males can develop retinopathy with subsequent visual impairment. The clinical features in females are broader and more variable. Females are more likely to have dilated cardiomyopathy, with a smaller proportion requiring heart transplantation compared to affected males. Cardiac conduction abnormalities, skeletal muscle weakness, mild cognitive impairment, and pigmentary retinopathy are variably seen in affected females.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/209235">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_182961"><div><strong>Hajdu-Cheney syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>182961</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0917715</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hajdu-Cheney syndrome (HJCYS) is a rare autosomal dominant skeletal disorder characterized by short stature, coarse and dysmorphic facies, bowing of the long bones, and vertebral anomalies. Facial features include hypertelorism, bushy eyebrows, micrognathia, small mouth with dental anomalies, low-set ears, and short neck. There is progressive focal bone destruction, including acroosteolysis and generalized osteoporosis. Additional and variable features include hearing loss, renal cysts, and cardiovascular anomalies (summary by Ramos et al., 1998; Simpson et al., 2011; Isidor et al., 2011).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/182961">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_181488"><div><strong>Familial infantile myoclonic epilepsy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>181488</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0917800</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">TBC1D24-related disorders comprise a continuum of features that were originally described as distinct, recognized phenotypes: DOORS syndrome (deafness, onychodystrophy, osteodystrophy, mental retardation, and seizures), with profound sensorineural hearing loss, onychodystrophy, osteodystrophy, intellectual disability / developmental delay, and seizures; familial infantile myoclonic epilepsy (FIME), with early-onset myoclonic seizures, focal epilepsy, dysarthria, and mild-to-moderate intellectual disability; progressive myoclonus epilepsy (PME), with action myoclonus, tonic-clonic seizures, ataxia, and progressive neurologic decline; rolandic epilepsy with paroxysmal exercise-induced dystonia and writer's cramp (EPRPDC); developmental and epileptic encephalopathy (DEE), including epilepsy of infancy with migrating focal seizures (EIMFS); autosomal recessive nonsyndromic hearing loss (DFNB); and autosomal dominant nonsyndromic hearing loss (DFNA).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/181488">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_203368"><div><strong>Salla disease</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>203368</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1096903</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Free sialic acid storage disorders (FSASDs) are a spectrum of neurodegenerative disorders resulting from increased lysosomal storage of free sialic acid. Historically, FSASD was divided into separate allelic disorders: Salla disease, intermediate severe Salla disease, and infantile free sialic acid storage disease (ISSD). The mildest type was Salla disease, characterized by normal appearance and absence of neurologic findings at birth, followed by slowly progressive neurologic deterioration resulting in mild-to-moderate psychomotor delays, spasticity, athetosis, and epileptic seizures. Salla disease was named for a municipality in Finnish Lapland where a specific founder variant is relatively prevalent. However, the term Salla has been used in the literature to refer to less severe FSASD. More severe FSASD is historically referred to as ISSD, and is characterized by severe developmental delay, coarse facial features, hepatosplenomegaly, and cardiomegaly; death usually occurs in early childhood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/203368">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_216941"><div><strong>Dyskeratosis congenita, X-linked</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>216941</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1148551</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dyskeratosis congenita and related telomere biology disorders (DC/TBD) are caused by impaired telomere maintenance resulting in short or very short telomeres. The phenotypic spectrum of telomere biology disorders is broad and includes individuals with classic dyskeratosis congenita (DC) as well as those with very short telomeres and an isolated physical finding. Classic DC is characterized by a triad of dysplastic nails, lacy reticular pigmentation of the upper chest and/or neck, and oral leukoplakia, although this may not be present in all individuals. People with DC/TBD are at increased risk for progressive bone marrow failure (BMF), myelodysplastic syndrome or acute myelogenous leukemia, solid tumors (usually squamous cell carcinoma of the head/neck or anogenital cancer), and pulmonary fibrosis. Other findings can include eye abnormalities (epiphora, blepharitis, sparse eyelashes, ectropion, entropion, trichiasis), taurodontism, liver disease, gastrointestinal telangiectasias, and avascular necrosis of the hips or shoulders. Although most persons with DC/TBD have normal psychomotor development and normal neurologic function, significant developmental delay is present in both forms; additional findings include cerebellar hypoplasia (Hoyeraal Hreidarsson syndrome) and bilateral exudative retinopathy and intracranial calcifications (Revesz syndrome and Coats plus syndrome). Onset and progression of manifestations of DC/TBD vary: at the mild end of the spectrum are those who have only minimal physical findings with normal bone marrow function, and at the severe end are those who have the diagnostic triad and early-onset BMF.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/216941">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_224702"><div><strong>Progeroid short stature with pigmented nevi</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>224702</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1261128</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mulvihill-Smith syndrome is characterized by premature aging, multiple pigmented nevi, lack of facial subcutaneous fat, microcephaly, short stature, sensorineural hearing loss, and mental retardation. Immunodeficiency may also be a feature. Adult manifestations include the development of tumors, a sleep disorder with severe insomnia, and cognitive decline (summary by Yagihashi et al., 2009).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/224702">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_224728"><div><strong>Merosin deficient congenital muscular dystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>224728</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1263858</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Merosin-deficient congenital muscular dystrophy is an autosomal recessive form of muscular dystrophy characterized by muscle weakness apparent at birth or in the first 6 months of life. Patients show hypotonia, poor suck and cry, and delayed motor development; most never achieve independent ambulation. Most patients also have periventricular white matter abnormalities on brain imaging, but mental retardation and/or seizures occur only rarely (summary by Xiong et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/224728">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_266149"><div><strong>Cardio-facio-cutaneous syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>266149</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1275081</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cardiofaciocutaneous (CFC) syndrome is characterized by cardiac abnormalities (pulmonic stenosis and other valve dysplasias, septal defects, hypertrophic cardiomyopathy, rhythm disturbances), distinctive craniofacial appearance, and cutaneous abnormalities (including xerosis, hyperkeratosis, ichthyosis, keratosis pilaris, ulerythema ophryogenes, eczema, pigmented moles, hemangiomas, and palmoplantar hyperkeratosis). The hair is typically sparse, curly, fine or thick, and woolly or brittle; eyelashes and eyebrows may be absent or sparse. Nails may be dystrophic or fast growing. Affected individuals typically have some form of neurologic and/or cognitive delay (ranging from mild to severe). Most individuals have severe feeding issues, which can contribute to poor growth, and many require nasogastric or gastrostomy tube feeding. Many affected individuals have eye findings, including strabismus, nystagmus, refractive errors, and optic nerve hypoplasia. Seizures may be present and can be refractory to therapy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/266149">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_224809"><div><strong>Autosomal recessive keratitis-ichthyosis-deafness syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>224809</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1275089</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">IDEDNIK syndrome is characterized by enteropathy, poor weight gain, growth deficiency, skin manifestations (ichthyosis, erythroderma, and keratoderma), sparse hair, global developmental delay, mild-to-severe intellectual disability, and deafness. Additional manifestations can include liver disease, recurrent infections, and hematologic and ocular manifestations (photophobia, corneal scarring, and keratitis). Reduced serum ceruloplasmin and total copper levels are common. Some individuals have findings on brain MRI (cerebral atrophy, basal ganglia abnormalities, and thin corpus callosum). Death prior to age two years occurs in some individuals due to severe enteropathy or sepsis; in others survival into adulthood is reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/224809">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_452940"><div><strong>Deficiency of phosphoserine phosphatase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>452940</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1291463</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Serine deficiency disorders include a spectrum of disease ranging from lethal prenatal-onset Neu-Laxova syndrome to serine deficiency with infantile, juvenile, or adult onset. Neu-Laxova syndrome is characterized by severe intrauterine growth deficiency, microcephaly, congenital bilateral cataracts, characteristic dysmorphic features, limb anomalies, and collodion-like ichthyosis. Infants are typically stillborn or die in early infancy. Infantile-onset serine deficiency is characterized by seizures, microcephaly, developmental delay, intellectual disability, and spastic quadriplegia. Individuals that present with juvenile-onset serine deficiency have seizures and many develop spastic quadriplegia. Adult-onset serine deficiency is characterized by progressive axonal polyneuropathy with ataxia and possible cognitive impairment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/452940">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_226944"><div><strong>Deficiency of beta-ureidopropionase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>226944</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1291512</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Beta-ureidopropionase deficiency is a rare autosomal recessive inborn error of metabolism due to a defect in pyrimidine degradation. Less than 10 patients have been reported, and the phenotype can range from severe neurologic involvement with mental retardation and seizures to normal neurologic development (Yaplito-Lee et al., 2008).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/226944">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_266247"><div><strong>Sponastrime dysplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>266247</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1300260</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Sponastrime dysplasia is an autosomal recessive spondyloepimetaphyseal dysplasia (SEMD) named for characteristic clinical and radiographic findings, including spine (spondylar) abnormalities, midface hypoplasia with a depressed nasal bridge, and striation of the metaphyses. Additional features include disproportionate short stature with exaggerated lumbar lordosis, scoliosis, coxa vara, limited elbow extension, small dysplastic epiphyses, childhood cataracts, short dental roots, and hypogammaglobulinemia. Radiographically, the abnormalities of the lumbar vertebral bodies are suggested to be the most specific finding because the characteristic metaphyseal striations may not be apparent at young ages. Striking clinical variability in presentation, severity, and associated features has been observed (summary by Burrage et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/266247">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_220983"><div><strong>Nicolaides-Baraitser syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>220983</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1303073</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SMARCA2-related Nicolaides-Baraitser syndrome (SMARCA2-NCBRS) is characterized by commonly shared dysmorphic features including sparse scalp hair, prominence of the interphalangeal joints and distal phalanges due to decreased subcutaneous fat, characteristic coarse facial features, microcephaly (typically acquired), seizures, and developmental delay / intellectual disability. Developmental delay / intellectual disability is severe in nearly half of affected individuals, moderate in one third, and mild in the remainder. Nearly one third never develop speech or language skills. Seizures are of various types and can be difficult to manage, requiring multiple anti-seizure medications to achieve reasonable control. Regression or lack of developmental progress has been noted with the onset of seizures in some affected individuals. Behavioral issues can include autistic-like features (perseveration, hyperacusis), with a minority of affected individuals being diagnosed clinically with an autism spectrum disorder. Cryptorchidism is common in males. About half of affected individuals have growth deficiency and short stature. Delayed tooth eruption with hypo- or oligodontia has also been reported. Radiographic findings may include cone-shaped epiphyses, metaphyseal flaring of the phalanges, and shortening of the phalanges, metacarpals, and/or metatarsals (especially of the 4th and 5th rays) of the hands; platyspondyly; flat intervertebral disc space; and pelvic/femoral anomalies. Rare findings include conductive hearing loss, refractive error / astigmatism, and congenital heart defects.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/220983">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_272036"><div><strong>Trichothiodystrophy 4, nonphotosensitive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>272036</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1313961</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Trichothiodystrophy is a rare autosomal recessive disorder in which patients have brittle, sulfur-deficient hair that displays a diagnostic alternating light and dark banding pattern, called 'tiger tail banding,' under polarizing microscopy. TTD patients display a wide variety of clinical features, including cutaneous, neurologic, and growth abnormalities. Common additional clinical features are ichthyosis, intellectual/developmental disabilities, decreased fertility, abnormal characteristics at birth, ocular abnormalities, short stature, and infections. There are both photosensitive and nonphotosensitive forms of the disorder (summary by Faghri et al., 2008).&#13; Sabinas brittle hair syndrome (211390) is another form of nonphotosensitive TTD.&#13; For a discussion of genetic heterogeneity of trichothiodystrophy, see 601675.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/272036">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_230818"><div><strong>Barber-Say syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>230818</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1319466</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Barber-Say syndrome (BBRSAY) is a rare congenital condition characterized by severe hypertrichosis, especially of the back, skin abnormalities such as hyperlaxity and redundancy, and facial dysmorphism, including macrostomia, eyelid deformities, ocular telecanthus, abnormal and low-set ears, bulbous nasal tip with hypoplastic alae nasi, and low frontal hairline (summary by Roche et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/230818">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_231160"><div><strong>Shprintzen-Goldberg syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>231160</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1321551</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Shprintzen-Goldberg syndrome (SGS) is characterized by: delayed motor and cognitive milestones and mild-to-moderate intellectual disability; craniosynostosis of the coronal, sagittal, or lambdoid sutures; distinctive craniofacial features; and musculoskeletal findings including olichostenomelia, arachnodactyly, camptodactyly, pectus excavatum or carinatum, scoliosis, joint hypermobility or contractures, pes planus, foot malposition, and C1-C2 spine malformation. Cardiovascular anomalies may include mitral valve prolapse, secundum atrial septal defect, and aortic root dilatation. Minimal subcutaneous fat, abdominal wall defects, and myopia are also characteristic findings.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/231160">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_307142"><div><strong>Orofaciodigital syndrome I</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>307142</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1510460</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Oral-facial-digital syndrome type I (OFD1) is usually male lethal during gestation and predominantly affects females. OFD1 is characterized by the following: oral features (lobulated tongue, tongue nodules, cleft of the hard or soft palate, accessory gingival frenulae, hypodontia, and other dental abnormalities); facial features (widely spaced eyes, telecanthus, hypoplasia of the alae nasi, median cleft or pseudocleft of the upper lip, micrognathia); digital features (brachydactyly, syndactyly, clinodactyly of the fifth finger, duplicated great toe); polycystic kidney disease; brain MRI findings (intracerebral cysts, agenesis of the corpus callosum, cerebellar agenesis with or without Dandy-Walker malformation); and intellectual disability (in approximately 50% of affected individuals).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/307142">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_280689"><div><strong>Deficiency of acetyl-CoA acetyltransferase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>280689</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1536500</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Alpha-methylacetoacetic aciduria, also known as 3-ketothiolase deficiency, is an inborn error of isoleucine catabolism characterized by urinary excretion of 2-methyl-3-hydroxybutyric acid, 2-methylacetoacetic acid, tiglylglycine, and 2-butanone.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/280689">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_288785"><div><strong>Diabetes insipidus, nephrogenic, X-linked</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>288785</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1563705</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary nephrogenic diabetes insipidus (NDI) is characterized by inability to concentrate the urine, which results in polyuria (excessive urine production) and polydipsia (excessive thirst). Affected untreated infants usually have poor feeding and failure to thrive, and rapid onset of severe dehydration with illness, hot environment, or the withholding of water. Short stature and secondary dilatation of the ureters and bladder from the high urine volume is common in untreated individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/288785">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_289643"><div><strong>Diabetes insipidus, nephrogenic, autosomal</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>289643</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1563706</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary nephrogenic diabetes insipidus (NDI) is characterized by inability to concentrate the urine, which results in polyuria (excessive urine production) and polydipsia (excessive thirst). Affected untreated infants usually have poor feeding and failure to thrive, and rapid onset of severe dehydration with illness, hot environment, or the withholding of water. Short stature and secondary dilatation of the ureters and bladder from the high urine volume is common in untreated individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/289643">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_289648"><div><strong>Hypogonadotropic hypogonadism 2 with or without anosmia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>289648</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1563720</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Isolated gonadotropin-releasing hormone (GnRH) deficiency (IGD) is characterized by inappropriately low serum concentrations of the gonadotropins LH (luteinizing hormone) and FSH (follicle-stimulating hormone) in the presence of low circulating concentrations of sex steroids. IGD is associated with a normal sense of smell (normosmic IGD) in approximately 40% of affected individuals and an impaired sense of smell (Kallmann syndrome) in approximately 60%. IGD can first become apparent in infancy, adolescence, or adulthood. Infant boys with congenital IGD often have micropenis and cryptorchidism. Adolescents and adults with IGD have clinical evidence of hypogonadism and incomplete sexual maturation on physical examination. Adult males with IGD tend to have prepubertal testicular volume (i.e., &lt;4 mL), absence of secondary sexual features (e.g., facial and axillary hair growth, deepening of the voice), decreased muscle mass, diminished libido, erectile dysfunction, and infertility. Adult females have little or no breast development and primary amenorrhea. Although skeletal maturation is delayed, the rate of linear growth is usually normal except for the absence of a distinct pubertal growth spurt.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/289648">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_318592"><div><strong>Congenital generalized lipodystrophy type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>318592</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1720862</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Berardinelli-Seip congenital lipodystrophy (BSCL) is usually diagnosed at birth or soon thereafter. Because of the absence of functional adipocytes, lipid is stored in other tissues, including muscle and liver. Affected individuals develop insulin resistance and approximately 25%-35% develop diabetes mellitus between ages 15 and 20 years. Hepatomegaly secondary to hepatic steatosis and skeletal muscle hypertrophy occur in all affected individuals. Hypertrophic cardiomyopathy is reported in 20%-25% of affected individuals and is a significant cause of morbidity from cardiac failure and early mortality.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/318592">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_315658"><div><strong>Congenital muscular hypertrophy-cerebral syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>315658</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1802395</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cornelia de Lange syndrome (CdLS) encompasses a spectrum of findings from mild to severe. Severe (classic) CdLS is characterized by distinctive facial features, growth restriction (prenatal onset; &lt;5th centile throughout life), hypertrichosis, and upper-limb reduction defects that range from subtle phalangeal abnormalities to oligodactyly (missing digits). Craniofacial features include synophrys, highly arched and/or thick eyebrows, long eyelashes, short nasal bridge with anteverted nares, small widely spaced teeth, and microcephaly. Individuals with a milder phenotype have less severe growth, cognitive, and limb involvement, but often have facial features consistent with CdLS. Across the CdLS spectrum IQ ranges from below 30 to 102 (mean: 53). Many individuals demonstrate autistic and self-destructive tendencies. Other frequent findings include cardiac septal defects, gastrointestinal dysfunction, hearing loss, myopia, and cryptorchidism or hypoplastic genitalia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/315658">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_321949"><div><strong>Hunter-McAlpine craniosynostosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>321949</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832408</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">This syndrome has characteristics of craniosynostosis, intellectual deficit, short stature, facial dysmorphism (oval face with almond-shaped palpebral fissures, droopy eyelids and a small nose) and minor distal anomalies. It has been described in 10 patients. Transmission is autosomal dominant and the syndrome is associated with partial duplication of the long arm of chromosome 5 (5q35-5qter).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/321949">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_330468"><div><strong>Epilepsy-microcephaly-skeletal dysplasia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>330468</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832437</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare multiple congenital anomalies/dysmorphic syndrome characterized by global developmental delay, intellectual disability, hypotonia, seizures, microcephaly, delayed bone maturation, and skeletal abnormalities (such as scoliosis or pectus excavatum, among others). Dysmorphic features include coarse face, hirsutism, thick eyebrows, broad nasal septum, short philtrum, large mouth, and prominent ears. There have been no further descriptions in the literature since 1996.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/330468">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_330469"><div><strong>MMEP syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>330469</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832440</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A congenital syndromic form of split-hand/foot malformation with features of microcephaly, microphthalmia, ectrodactyly of the lower limbs and prognathism. Intellectual deficit has been reported. MMEP syndrome is considered to be a very rare condition. Disruption of the sorting nexin 3 gene (SNX3; 6q21) has been shown to play a causative role in MMEP.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/330469">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_318657"><div><strong>Potocki-Shaffer syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>318657</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832588</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Potocki-Shaffer syndrome is a rare contiguous gene deletion syndrome due to haploinsufficiency of the 11p12-p11.2 region and is characterized by craniofacial abnormalities, developmental delay, intellectual disability, multiple exostoses (168500), and biparietal foramina (609597) (summary by Swarr et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/318657">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_322025"><div><strong>Fallot complex-intellectual disability-growth delay syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>322025</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832735</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare disorder characterised by tetralogy of Fallot, minor facial anomalies, and severe intellectual deficiency and growth delay. Dysmorphic features include large, protruding, abnormally modelled ears and broad nasal root. Microcephaly and syndactyly of second and third toes have also been recorded. All patients have severe intellectual deficiency. The condition is transmitted as an autosomal recessive trait.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/322025">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_371416"><div><strong>Ayme-Gripp syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>371416</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832812</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Aymé-Gripp syndrome is classically defined as the triad of bilateral early cataracts, sensorineural hearing loss, and characteristic facial features in combination with neurodevelopmental abnormalities. The facial features are often described as "Down syndrome-like" and include brachycephaly, flat facial appearance, short nose, long philtrum, narrow mouth, and low-set and posteriorly rotated ears. Hearing loss is often congenital. Other features may include postnatal short stature, seizure disorder, nonspecific brain abnormalities on head imaging, skeletal abnormalities, and joint limitations. A subset of individuals have been found to have pericarditis or pericardial effusion during the neonatal or infantile period. All affected individuals have had developmental delay, but the degree of cognitive impairment is extremely variable. Other features including gastrointestinal and endocrine abnormalities, ectodermal dysplasia (i.e., nail dystrophy and mammary gland hypoplasia), dental anomalies, and chronic glomerulopathy with proteinuria have been reported in rare affected individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/371416">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_371424"><div><strong>Epilepsy, familial adult myoclonic, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>371424</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832841</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Familial adult myoclonic epilepsy-1 (FAME1), also known as familial cortical myoclonic tremor associated with epilepsy-1 (FCMTE1), is characterized by autosomal dominant, adult-onset cortical myoclonus, with seizures in 40% of patients. Myoclonus is usually the first symptom and is characterized by tremulous finger movements and myoclonus of the extremities (summary by Depienne et al., 2010). FAME1 tends to occur in patients of southern Asian descent (summary by Bennett et al., 2020).&#13; Genetic Heterogeneity of Familial Adult Myoclonic Epilepsy&#13; See also FAME2 (607876), caused by mutation in the STARD7 gene (616712) on chromosome 2q11; FAME3 (613608), caused by mutation in the MARCHF6 gene (613297) on chromosome 5p15; FAME4 (615127), which maps to chromosome 3q26.32-q28; FAME6 (618074), caused by mutation in the TNRC6A gene (610739) on chromosome 16p12; and FAME7 (618075), caused by mutation in the RAPGEF2 gene (609530) on chromosome 4.&#13; The disorder previously designated FAME5 has been reclassified as a type of autosomal recessive early-onset epilepsy (EPEO5; 615400).&#13; Progressive myoclonic epilepsy is a more severe disorder (see, e.g., EPM1, 254800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/371424">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_318724"><div><strong>Ichthyosis-intellectual disability syndrome with large keratohyalin granules in the skin</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>318724</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832858</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/318724">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_331395"><div><strong>Timothy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>331395</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832916</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The clinical manifestations of CACNA1C-related disorders include a spectrum of nonsyndromic and syndromic phenotypes, which generally correlate with the impact of the pathogenic variant on calcium current. Phenotypes can include nonsyndromic long QT syndrome (rate-corrected QT [QTc] interval &gt;480 ms); nonsyndromic short QT syndrome (QTc &lt;350 ms), with risk of sudden death; Brugada syndrome (ST segment elevation in right precordial leads [V1-V2]) with short QT interval; classic Timothy syndrome (prolonged QT interval, autism, and congenital heart defect) with or without unilateral or bilateral cutaneous syndactyly variably involving fingers two (index), three (middle), four (ring), and five (little) and bilateral cutaneous syndactyly of toes two and three; and CACNA1C-related neurodevelopmental disorder, in which the features tend to favor one or more of the following: developmental delay / intellectual disability, hypotonia, epilepsy, and/or ataxia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/331395">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_318752"><div><strong>Cardiac malformation, cleft lip/palate, microcephaly, and digital anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>318752</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832950</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/318752">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_322127"><div><strong>Van den Ende-Gupta syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>322127</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1833136</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Van den Ende-Gupta syndrome (VDEGS) is an autosomal recessive disorder characterized by severe contractual arachnodactyly from birth and distinctive facial dysmorphism, including triangular face, malar hypoplasia, narrow nose, everted lips, and blepharophimosis. Skeletal anomalies include slender ribs, hooked clavicles, and dislocated radial head. There is no neurologic involvement (summary by Patel et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/322127">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_371596"><div><strong>Cone-rod dystrophy 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>371596</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1833564</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cone-rod dystrophy is a group of related eye disorders that causes vision loss, which becomes more severe over time. These disorders affect the retina, which is the layer of light-sensitive tissue at the back of the eye. In people with cone-rod dystrophy, vision loss occurs as the light-sensing cells of the retina gradually deteriorate.\n\nThe first signs and symptoms of cone-rod dystrophy, which often occur in childhood, are usually decreased sharpness of vision (visual acuity) and increased sensitivity to light (photophobia). These features are typically followed by impaired color vision (dyschromatopsia), blind spots (scotomas) in the center of the visual field, and partial side (peripheral) vision loss. Over time, affected individuals develop night blindness and a worsening of their peripheral vision, which can limit independent mobility. Decreasing visual acuity makes reading increasingly difficult and most affected individuals are legally blind by mid-adulthood. As the condition progresses, individuals may develop involuntary eye movements (nystagmus).\n\nThere are more than 30 types of cone-rod dystrophy, which are distinguished by their genetic cause and their pattern of inheritance: autosomal recessive, autosomal dominant, and X-linked. Additionally, cone-rod dystrophy can occur alone without any other signs and symptoms or it can occur as part of a syndrome that affects multiple parts of the body.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/371596">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_318972"><div><strong>Ophthalmoplegia-intellectual disability-lingua scrotalis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>318972</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1833835</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ophthalmoplegia-intellectual disability-lingua scrotalis syndrome is a rare, genetic, syndromic intellectual disability disorder characterized by congenital, external, nuclear ophthalmoplegia, lingua scrotalis, progressive chorioretinal sclerosis and intellectual disability. Bilateral ptosis, bilateral facial weakness, Parinaud's syndrome, convergence paresis and myopia may be associated. There have been no further descriptions in the literature since 1975.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/318972">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_331805"><div><strong>Bethlem myopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>331805</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1834674</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bethlem myopathy-1 (BTHLM1) is a congenital muscular dystrophy characterized by distal joint laxity and a combination of distal and proximal joint contractures. The age at onset is highly variable, ranging from infancy to adulthood. Disease progression is slow and ambulation is usually retained into adulthood (summary by Butterfield et al., 2013).&#13; Genetic Heterogeneity of Bethlem Myopathy&#13; See Bethlem myopathy-1B (BTHLM1B; 620725), caused by mutation in the COL6A2 gene (120240) on chromosome 21q22; Bethlem myopathy-1C (620726), caused by mutation the COL6A3 gene (120250) on chromosome 2q37; and Bethlem myopathy-2 (BTHLM2; 616471), caused by mutation in the COL12A1 gene (120320) on chromosome 6q13-q14.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/331805">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_331813"><div><strong>Cerebelloparenchymal Disorder VI</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>331813</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1834711</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/331813">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_371897"><div><strong>MOMO syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>371897</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1834759</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A very rare genetic overgrowth/obesity syndrome with characteristics of macrocephaly, obesity, mental (intellectual) disability and ocular abnormalities. Other frequent clinical signs include macrosomia, downslanting palpebral fissures, hypertelorism, broad nasal root, high and broad forehead and delay in bone maturation, in association with normal thyroid function and karyotype.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/371897">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_322517"><div><strong>Holoprosencephaly 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>322517</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1834877</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare disorder characterized by the partial separation of the cerebral hemispheres. It is associated with mutations in the SIX3 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/322517">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_331885"><div><strong>Mental and growth retardation with amblyopia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>331885</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1835028</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/331885">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_372055"><div><strong>Lentiginosis, centrofacial neurodysraphic</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>372055</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1835484</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/372055">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_372142"><div><strong>Alopecia-intellectual disability syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>372142</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1835852</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/372142">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_332131"><div><strong>Goldberg-Shprintzen syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>332131</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836123</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Goldberg-Shprintzen syndrome (GOSHS) is an autosomal recessive multiple congenital anomaly syndrome characterized by impaired intellectual development, microcephaly, and dysmorphic facial features. Most patients also have Hirschsprung disease and/or gyral abnormalities of the brain, consistent with defects in migration of neural crest cells and neurons. Other features, such as megalocornea or urogenital anomalies, may also be present. Goldberg-Shprintzen syndrome has some resemblance to Mowat-Wilson syndrome (MOWS; 235730) but is genetically distinct (summary by Drevillon et al., 2013).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/332131">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_322893"><div><strong>MEDNIK syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>322893</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836330</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">IDEDNIK syndrome is characterized by enteropathy, poor weight gain, growth deficiency, skin manifestations (ichthyosis, erythroderma, and keratoderma), sparse hair, global developmental delay, mild-to-severe intellectual disability, and deafness. Additional manifestations can include liver disease, recurrent infections, and hematologic and ocular manifestations (photophobia, corneal scarring, and keratitis). Reduced serum ceruloplasmin and total copper levels are common. Some individuals have findings on brain MRI (cerebral atrophy, basal ganglia abnormalities, and thin corpus callosum). Death prior to age two years occurs in some individuals due to severe enteropathy or sepsis; in others survival into adulthood is reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/322893">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_332193"><div><strong>Autosomal recessive limb-girdle muscular dystrophy type 2K</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>332193</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836373</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Limb-girdle muscular dystrophies resulting from defective glycosylation of alpha-dystroglycan (DAG1; 128239) represent the mildest end of the phenotypic spectrum of muscular dystrophies collectively known as dystroglycanopathies. The limb-girdle phenotype is characterized by onset of muscular weakness apparent after ambulation is achieved; impaired intellectual development and mild brain anomalies are variable (Balci et al., 2005; review by Godfrey et al., 2007). The most severe end of the phenotypic spectrum of dystroglycanopathies is represented by congenital muscular dystrophy-dystroglycanopathy with brain and eye anomalies (type A; see MDDGA1, 236670), previously designated Walker-Warburg syndrome (WWS) or muscle-eye-brain disease (MEB), and the intermediate range of the spectrum is represented by congenital muscular dystrophy-dystroglycanopathy with or without impaired intellectual development (type B; see MDDGB1, 613155).&#13; Genetic Heterogeneity of Limb-Girdle Muscular Dystrophy-Dystroglycanopathy (Type C)&#13; Limb-girdle muscular dystrophy due to defective glycosylation of DAG1 is genetically heterogeneous. See also MDDGC2 (613158), caused by mutation in the POMT2 gene (607439); MDDGC3 (613157), caused by mutation in the POMGNT1 gene (606822); MDDGC4 (611588), caused by mutation in the FKTN gene (607440); MDDGC5 (607155), caused by mutation in the FKRP gene (606596); MDDGC7 (616052), caused by mutation in the ISPD gene (CRPPA; 614631); MDDGC8 (618135), caused by mutation in the POMGNT2 gene (614828); MDDGC9 (613818) caused by mutation in the DAG1 gene (128239); MDDGC12 (616094), caused by mutation in the POMK gene (615247); MDDGC14 (615352) caused by mutation in the GMPPB gene (615320); and MDDGC15 (612937), caused by mutation in the DPM3 gene (605951).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/332193">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_373154"><div><strong>Familial hyperthyroidism due to mutations in TSH receptor</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>373154</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836706</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare hyperthyroidism characterized by mild to severe hyperthyroidism, presence of goiter, absence of features of autoimmunity, frequent relapses while on treatment and a positive family history.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/373154">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_373160"><div><strong>PCWH syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>373160</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836727</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PCWH syndrome is a complex neurocristopathy that includes features of 4 distinct syndromes: peripheral demyelinating neuropathy (see 118200), central dysmyelination, Waardenburg syndrome, and Hirschsprung disease (see 142623) (Inoue et al., 2004). Inoue et al. (2004) proposed the acronym PCWH for this disorder.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/373160">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_332304"><div><strong>Neuronal ceroid lipofuscinosis 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>332304</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836841</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The clinical course includes progressive dementia, seizures, and progressive visual failure (Mole et al., 2005).&#13; For a discussion of genetic heterogeneity of neuronal ceroid lipofuscinosis, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/332304">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_324636"><div><strong>Posterior column ataxia-retinitis pigmentosa syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324636</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836916</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Retinopathy-sensory neuropathy syndrome (RETSNS) is an autosomal recessive disorder characterized by progressive visual impairment due to retinopathy (usually retinitis pigmentosa) and progressive sensory neuropathy resulting in distal sensory loss of various modalities (vibration, proprioception, pain). Affected individuals have noncerebellar gait ataxia, presumably due to degeneration of dorsal root ganglia in the posterior column of the spinal cord. The phenotypic manifestations and severity of the disorder are highly variable, and the age at onset can range from infancy to young adulthood. Individuals can present with either visual problems or sensory impairment with gait ataxia, but most patients eventually develop both. More severely affected individuals have congenital insensitivity to pain presenting in infancy, resulting in chronic ulceration and osteomyelitis. Autonomic abnormalities may also be apparent, consistent with hereditary sensory and autonomic neuropathy (HSAN; see, e.g., 162400). Developmental delay or impaired intellectual development is sometimes observed (Higgins et al., 1997; Grudzinska Pechhacker et al., 2020; Calame et al., 2025).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/324636">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_323030"><div><strong>Emanuel syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>323030</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836929</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Emanuel syndrome is characterized by pre- and postnatal growth deficiency, microcephaly, hypotonia, severe developmental delays, ear anomalies, preauricular tags or pits, cleft or high-arched palate, congenital heart defects, kidney abnormalities, and genital abnormalities in males.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/323030">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_324696"><div><strong>Myopia 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324696</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837148</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Myopia, or nearsightedness, is a refractive error of the eye. Light rays from a distant object are focused in front of the retina and those from a near object are focused in the retina; therefore distant objects are blurry and near objects are clear (summary by Kaiser et al., 2004).&#13; For a discussion of genetic heterogeneity of susceptibility to myopia, see 160700.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/324696">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_332390"><div><strong>Hereditary cryohydrocytosis with reduced stomatin</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>332390</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837206</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Stomatin-deficient cryohydrocytosis with neurologic defects (SDCHCN) is an autosomal dominant disorder characterized by delayed psychomotor development, seizures, cataracts, and pseudohyperkalemia resulting from defects in the red blood cell membrane. The disorder combines the neurologic features of Glut1 deficiency syndrome-1 (GLUT1DS1; 606777), resulting from impaired glucose transport at the blood-brain barrier, and hemolytic anemia/pseudohyperkalemia with stomatocytosis, resulting from a cation leak in erythrocytes (summary by Bawazir et al., 2012).&#13; For a discussion of clinical and genetic heterogeneity of red cell stomatocyte disorders, see 194380.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/332390">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_332448"><div><strong>Pyruvate dehydrogenase phosphatase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>332448</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837429</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pyruvate dehydrogenase phosphatase deficiency (PDHPD) is an autosomal recessive disorder of pyruvate metabolism characterized by neonatal/infantile and childhood lactic acidosis, normal lactate to pyruvate ratio, elevated plasma alanine, delayed psychomotor development, epileptic encephalopathy, and hypotonia (summary by Bedoyan et al., 2019).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of pyruvate dehydrogenase (PDH) deficiency, see 312170.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/332448">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_373337"><div><strong>Growth delay due to insulin-like growth factor type 1 deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>373337</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837475</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Insulin-like growth factor I deficiency (IGF1D) is characterized by severe pre- and postnatal growth failure, sensorineural deafness, and impaired motor and intellectual development (summary by Bonapace et al., 2003).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/373337">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_373344"><div><strong>Microcephaly 5, primary, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>373344</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837501</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ASPM primary microcephaly (ASPM-MCPH) is characterized by: (1) significant microcephaly (&gt;3 standard deviations [SD] below the mean for age) usually present at birth and always present before age one year and (2) the absence of other congenital anomalies. While developmental milestones are usually normal in young children, older children have variable levels of intellectual disability. Neurologic examination is usually normal except for mild spasticity. Seizures are not common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/373344">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_325196"><div><strong>Intellectual disability-brachydactyly-Pierre Robin syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>325196</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837564</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual disability-brachydactyly-Pierre Robin syndrome is a rare developmental defect during embryogenesis syndrome characterized by mild to moderate intellectual disability and phsychomotor delay, Robin sequence (incl. severe micrognathia and soft palate cleft) and distinct dysmorphic facial features (e.g. synophris, short palpebral fissures, hypertelorism, small, low-set, and posteriorly angulated ears, bulbous nose, long/flat philtrum, and bow-shaped upper lip). Skeletal anomalies, such as brachydactyly, clinodactyly, small hands and feet, and oral manifestations (e.g. bifid, short tongue, oligodontia) are also associated. Additional features reported include microcephaly, capillary hemangiomas on face and scalp, ventricular septal defect, corneal clouding, nystagmus and profound sensorineural deafness.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/325196">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_373381"><div><strong>Spondyloepiphyseal dysplasia with congenital joint dislocations</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>373381</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837657</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Chondrodysplasia with congenital joint dislocations, CHST3-related (CDCJD-CHST3) is characterized by short stature of prenatal onset, joint dislocations (knees, hips, radial heads), clubfeet, and limitation of range of motion that can involve all large joints. Kyphosis and occasionally scoliosis with slight shortening of the trunk develop in childhood. Minor heart valve dysplasia has been described in several persons. Intellect and vision are normal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/373381">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_332931"><div><strong>Joubert syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>332931</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837713</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/332931">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_324932"><div><strong>Autosomal dominant nocturnal frontal lobe epilepsy 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324932</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838049</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant sleep-related hypermotor (hyperkinetic) epilepsy (ADSHE) is a seizure disorder characterized by clusters of nocturnal motor seizures that are often stereotyped and brief (&lt;2 minutes). They vary from simple arousals from sleep to dramatic, often hyperkinetic events with tonic or dystonic features. Affected individuals may experience an aura. Retained awareness during seizures is common. A minority of individuals experience daytime seizures. Age of onset ranges from infancy to adulthood. About 80% of individuals develop ADSHE in the first two decades of life; mean age of onset is ten years. Clinical neurologic examination is normal and intellect is usually preserved, but reduced intellect, psychiatric comorbidities, or cognitive deficits may occur. Within a family, the manifestations of the disorder may vary considerably. ADSHE is lifelong but not progressive. As an individual reaches middle age, seizures may become milder and less frequent.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/324932">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_324947"><div><strong>Acrocardiofacial syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324947</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838121</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cleft palate, cardiac defects, genital anomalies, and ectrodactyly (CCGE) is an autosomal recessive disorder which is often lethal within the first several months of life. The most consistent feature is clefting of the hands, with clefting of the feet also present in some patients. Cleft lip and/or palate is frequently observed. Cardiovascular defects are found in most patients and are variable, with ventricular septal defect being the most common. Genital anomalies, including micropenis, cryptorchidism, and hypospadias, are often present in affected males (Wong et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/324947">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_324958"><div><strong>Aphalangy-syndactyly-microcephaly syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324958</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838161</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An extremely rare malformation syndrome characterized by the association of partial distal aphalangia with syndactyly, duplication of metatarsal IV, microcephaly, and mild intellectual disability.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/324958">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_333031"><div><strong>CODAS syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>333031</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838180</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CODAS is an acronym for cerebral, ocular, dental, auricular, and skeletal anomalies. CODAS syndrome is a rare disorder characterized by a distinctive constellation of features that includes developmental delay, craniofacial anomalies, cataracts, ptosis, median nasal groove, delayed tooth eruption, hearing loss, short stature, delayed epiphyseal ossification, metaphyseal hip dysplasia, and vertebral coronal clefts (summary by Strauss et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/333031">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_333107"><div><strong>Pachygyria-intellectual disability-epilepsy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>333107</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838491</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">This autosomal recessive neurodevelopmental disorder is characterized by pachygyria, impaired intellectual development, seizures, and diffuse localization of arachnoid cysts. It most likely represents a neuronal migration disorder within the lissencephaly spectrum (summary by Guzel et al., 2007).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/333107">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_333142"><div><strong>Warburg micro syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>333142</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838625</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">RAB18 deficiency is the molecular deficit underlying both Warburg micro syndrome (characterized by eye, nervous system, and endocrine abnormalities) and Martsolf syndrome (characterized by similar – but milder – findings). To date Warburg micro syndrome comprises &gt;96% of reported individuals with genetically defined RAB18 deficiency. The hallmark ophthalmologic findings are bilateral congenital cataracts, usually accompanied by microphthalmia, microcornea (diameter &lt;10), and small atonic pupils. Poor vision despite early cataract surgery likely results from progressive optic atrophy and cortical visual impairment. Individuals with Warburg micro syndrome have severe to profound intellectual disability (ID); those with Martsolf syndrome have mild to moderate ID. Some individuals with RAB18 deficiency also have epilepsy. In Warburg micro syndrome, a progressive ascending spastic paraplegia typically begins with spastic diplegia and contractures during the first year, followed by upper-limb involvement leading to spastic quadriplegia after about age five years, often eventually causing breathing difficulties. In Martsolf syndrome infantile hypotonia is followed primarily by slowly progressive lower-limb spasticity. Hypogonadism – when present – manifests in both syndromes, in males as micropenis and/or cryptorchidism and in females as hypoplastic labia minora, clitoral hypoplasia, and small introitus.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/333142">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_325070"><div><strong>Split hand-foot malformation 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>325070</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838652</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Split-hand/split-foot malformation is a limb malformation involving the central rays of the autopod and presenting with syndactyly, median clefts of the hands and feet, and aplasia and/or hypoplasia of the phalanges, metacarpals, and metatarsals. Some patients with SHFM3 have been found to have mental retardation, ectodermal and craniofacial findings, and orofacial clefting (Elliott and Evans, 2006).&#13; For additional phenotypic information and a discussion of genetic heterogeneity in this disorder, see SHFM1 (183600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/325070">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_325097"><div><strong>Eiken syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>325097</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838779</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Eiken syndrome (EKNS) is an autosomal recessive skeletal dysplasia characterized by delayed ossification of bones, epiphyseal dysplasia, and bone remodeling abnormalities. Type A1 brachydactyly (see 112500), supernumerary epiphyses of proximal phalanges and metacarpals, and failure of eruption of primary teeth have also been described. Defining radiologic features include delayed ossification of epiphyses and primary ossification centers of short tubular bones, modeling abnormalities of tubular bones, and angel-shaped phalanges (Jacob et al., 2019).&#13; See 603740 for a disorder with similar radiologic features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/325097">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_325511"><div><strong>Wolfram syndrome, mitochondrial form</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>325511</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838782</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/325511">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374113"><div><strong>Striatonigral degeneration, infantile, mitochondrial</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374113</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839022</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374113">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_333240"><div><strong>Leber optic atrophy and dystonia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>333240</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839040</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/333240">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_333247"><div><strong>Intellectual disability, X-linked 89</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>333247</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839082</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/333247">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374138"><div><strong>Trigonocephaly-short stature-developmental delay syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374138</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839125</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome with characteristics of short stature, trigonocephaly and developmental delay. It has been described in three males. Moderate intellectual deficit was reported in one of the males and the other two patients displayed psychomotor retardation. X-linked transmission has been suggested but autosomal recessive inheritance cannot be ruled out.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374138">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374177"><div><strong>Hereditary spastic paraplegia 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374177</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839264</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PLP1 disorders of central nervous system myelin formation include a range of phenotypes from Pelizaeus-Merzbacher disease (PMD) to spastic paraplegia 2 (SPG2). PMD typically manifests in infancy or early childhood with nystagmus, hypotonia, and cognitive impairment; the findings progress to severe spasticity and ataxia. Life span is shortened. SPG2 manifests as spastic paraparesis with or without CNS involvement and usually normal life span. Intrafamilial variation of phenotypes can be observed, but the signs are usually fairly consistent within families. Heterozygous females may manifest mild-to-moderate signs of the disease.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374177">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374193"><div><strong>X-linked intellectual disability, Schimke type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374193</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839320</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked mental retardation, Schimke type, is characterised by intellectual deficit, growth retardation with short stature, deafness and ophthalmoplegia. Choreoathetosis with muscle spasticity generally appears during childhood. It has been described in four boys, three of whom were from the same family. Transmission is X-linked.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374193">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_326461"><div><strong>SCARF syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>326461</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839321</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome with the association of skeletal abnormalities, cutis laxa, craniostenosis, ambiguous genitalia, psychomotor retardation and facial abnormalities. So far, it has been described in two males (maternal first cousins). The mode of inheritance was suggested to be X-linked recessive.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/326461">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_326486"><div><strong>Pyruvate dehydrogenase E1-alpha deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>326486</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839413</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Genetic defects in the pyruvate dehydrogenase complex are one of the most common causes of primary lactic acidosis in children. Most cases are caused by mutation in the E1-alpha subunit gene on the X chromosome. X-linked PDH deficiency is one of the few X-linked diseases in which a high proportion of heterozygous females manifest severe symptoms. The clinical spectrum of PDH deficiency is broad, ranging from fatal lactic acidosis in the newborn to chronic neurologic dysfunction with structural abnormalities in the central nervous system without systemic acidosis (Robinson et al., 1987; Brown et al., 1994).&#13; Genetic Heterogeneity of Pyruvate Dehydrogenase Complex Deficiency&#13; PDH deficiency can also be caused by mutation in other subunits of the PDH complex, including a form (PDHXD; 245349) caused by mutation in the component X gene (PDHX; 608769) on chromosome 11p13; a form (PDHBD; 614111) caused by mutation in the PDHB gene (179060) on chromosome 3p14; a form (PDHDD; 245348) caused by mutation in the DLAT gene (608770) on chromosome 11q23; a form (PDHPD; 608782) caused by mutation in the PDP1 gene (605993) on chromosome 8q22; and a form (PDHLD; 614462) caused by mutation in the LIAS gene (607031) on chromosome 4p14.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/326486">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_326915"><div><strong>Optic atrophy 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>326915</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839576</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare form of hereditary optic atrophy seen in only 4 families to date. With onset in early childhood the disease has characteristics of progressive loss of visual acuity, significant optic nerve pallor and occasionally additional neurological manifestations, with females being unaffected.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/326915">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374264"><div><strong>X-linked myopathy with excessive autophagy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374264</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839615</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked myopathy with excessive autophagy (XMEA) is an X-linked recessive skeletal muscle disorder characterized by childhood onset of progressive muscle weakness and atrophy primarily affecting the proximal muscles. While onset is usually in childhood, it can range from infancy to adulthood. Many patients lose ambulation and become wheelchair-bound. Other organ systems, including the heart, are clinically unaffected. Muscle biopsy shows intracytoplasmic autophagic vacuoles with sarcolemmal features and a multilayered basal membrane (summary by Ramachandran et al., 2013; Kurashige et al., 2013, and Ruggieri et al., 2015).&#13; Danon disease (300257), caused by mutation in the LAMP2 gene (309060) on chromosome Xq24, is a distinct disorder with similar pathologic features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374264">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_326949"><div><strong>Skeletal dysplasia-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>326949</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839729</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">This syndrome combines skeletal anomalies (short stature, ridging of the metopic suture, fusion of cervical vertebrae, thoracic hemivertebrae, scoliosis, sacral hypoplasia and short middle phalanges) and mild intellectual deficit. It has been described in four male cousins in three sibships. Glucose intolerance was present in three cases, and imperforated anus in one case. Carrier females had minor manifestations (fusion of cervical vertebrae and glucose intolerance). Transmission seems to be X-linked.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/326949">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374294"><div><strong>Prieto syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374294</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839730</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Prieto syndrome (PRS) is an X-linked intellectual developmental disorder characterized by mildly to severely impaired intellectual development, developmental delay, autism spectrum disorder, or neuropsychiatric symptoms, variably accompanied by speech delay, epilepsy, microcephaly, structural brain defects, and minor facial anomalies (summary by Kury et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374294">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_333393"><div><strong>Wilson-Turner syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>333393</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839736</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Wilson-Turner syndrome (WTS) is an X-linked recessive neurologic disorder characterized by intellectual disability, dysmorphic facial features, hypogonadism, short stature, and truncal obesity. Females are unaffected (Wilson et al., 1991).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/333393">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_333405"><div><strong>Syndromic X-linked intellectual disability 12</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>333405</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839792</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">X-linked intellectual disability, Wilson type is characterised by severe intellectual deficit with mutism, epilepsy, growth retardation and recurrent infections. It has been described in three males from three generations of one family. The causative gene has been localised to the 11p region of the X chromosome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/333405">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374332"><div><strong>Lesch-Nyhan phenotype with normal HGPRT</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374332</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839883</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374332">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374339"><div><strong>X-linked complicated corpus callosum dysgenesis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374339</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839909</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">L1 syndrome involves a phenotypic spectrum ranging from severe to mild and includes three clinical phenotypes: X-linked hydrocephalus with stenosis of the aqueduct of Sylvius (HSAS). MASA (mental retardation [intellectual disability], aphasia [delayed speech], spastic paraplegia [shuffling gait], adducted thumbs) syndrome including X-linked complicated hereditary spastic paraplegia type 1. X-linked complicated corpus callosum agenesis. Males with HSAS are born with severe hydrocephalus, adducted thumbs, and spasticity; intellectual disability is severe. In less severely affected males, hydrocephalus may be subclinically present and documented only because of developmental delay; intellectual disability ranges from mild (IQ: 50-70) to moderate (IQ: 30-50). It is important to note that all phenotypes can be observed in affected individuals within the same family.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374339">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_327125"><div><strong>Holoprosencephaly 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>327125</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1840529</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any holoprosencephaly in which the cause of the disease is a mutation in the SHH gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/327125">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_334166"><div><strong>Lipodystrophy-intellectual disability-deafness syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>334166</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1842465</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Lipodystrophy-intellectual disability-deafness syndrome is an extremely rare form of genetic lipodystrophy (see this term), reported in 3 patients from one family to date, characterized by generalized congenital lipodystrophy, low birth weight, progressive sensorineural deafness occurring in childhood, intellectual deficit, progressive osteopenia, delayed skeletal maturation, skeletal abnormalities described as slender, undermineralized tubular bones, and dense metaphyseal striations in the distal femur, ulna and radius of older patients. Autosomal recessive inheritance has been suggested.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/334166">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_334110"><div><strong>Periventricular heterotopia with microcephaly, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>334110</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1842563</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/334110">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_334114"><div><strong>Joubert syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>334114</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1842577</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/334114">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_334211"><div><strong>Autism, susceptibility to, 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>334211</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1842632</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Autism, the prototypic pervasive developmental disorder (PDD), is usually apparent by 3 years of age. It is characterized by a triad of limited or absent verbal communication, a lack of reciprocal social interaction or responsiveness, and restricted, stereotypic, and ritualized patterns of interests and behavior (Bailey et al., 1996; Risch et al., 1999). 'Autism spectrum disorder,' sometimes referred to as ASD, is a broader phenotype encompassing the less severe disorders Asperger syndrome (see ASPG1; 608638) and pervasive developmental disorder, not otherwise specified (PDD-NOS). 'Broad autism phenotype' includes individuals with some symptoms of autism, but who do not meet the full criteria for autism or other disorders. Impaired intellectual development coexists in approximately two-thirds of individuals with ASD, except for Asperger syndrome, in which impaired intellectual development is conspicuously absent (Jones et al., 2008). Genetic studies in autism often include family members with these less stringent diagnoses (Schellenberg et al., 2006).&#13; For a discussion of genetic heterogeneity of autism, see 209850.&#13; See also chromosome 13q14 deletion syndrome (613884), in which retinoblastoma and impaired intellectual development are features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/334211">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_375031"><div><strong>Epilepsy, familial adult myoclonic, 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375031</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1842852</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Familial adult myoclonic epilepsy-2 (FAME2) is an autosomal dominant neurologic disorder characterized by onset of tremor affecting the fingers, hand, and voice in adolescence or young adulthood with somewhat later onset of rhythmic myoclonic jerks and generalized tonic-clonic seizures. Electrophysiologic studies are consistent with cortical reflex myoclonus. Some patients may show cognitive decline or migraines; photosensitivity is common (summary by De Fusco et al., 2014; Crompton et al., 2012).&#13; For a phenotypic description and a discussion of genetic heterogeneity of familial adult myoclonic epilepsy, see FAME1 (601068).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375031">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_334629"><div><strong>Chromosome 1p36 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>334629</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1842870</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The constitutional deletion of chromosome 1p36 results in a syndrome with multiple congenital anomalies and mental retardation (Shapira et al., 1997). Monosomy 1p36 is the most common terminal deletion syndrome in humans, occurring in 1 in 5,000 births (Shaffer and Lupski, 2000; Heilstedt et al., 2003).&#13; See also neurodevelopmental disorder with or without anomalies of the brain, eye, or heart (NEDBEH; 616975), which shows overlapping features and is caused by heterozygous mutation in the RERE gene (605226) on proximal chromosome 1p36.&#13; See also Radio-Tartaglia syndrome (RATARS; 619312), caused by mutation in the SPEN gene (613484) on chromosome 1p36, which shows overlapping features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/334629">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_334681"><div><strong>Acrocapitofemoral dysplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>334681</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1843096</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Acrocapitofemoral dysplasia (ACFD) is an autosomal recessive skeletal dysplasia characterized by postnatal-onset disproportionate short stature, relatively large head, narrow thorax, lumbar lordosis, short limbs, and brachydactyly with small broad nails (Ozyavuz Cubuk and Duz, 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/334681">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_334382"><div><strong>Neonatal ichthyosis-sclerosing cholangitis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>334382</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1843355</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ichthyosis, leukocyte vacuoles, alopecia, and sclerosing cholangitis (ILVASC) is a rare autosomal recessive syndrome characterized by scalp hypotrichosis, scarring alopecia, ichthyosis, and sclerosing cholangitis (summary by Feldmeyer et al., 2006).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/334382">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335942"><div><strong>Niemann-Pick disease, type C2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335942</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1843366</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Niemann-Pick disease type C (NPC) is a slowly progressive lysosomal disorder whose principal manifestations are age dependent. The manifestations in the perinatal period and infancy are predominantly visceral, with hepatosplenomegaly, jaundice, and (in some instances) pulmonary infiltrates. From late infancy onward, the presentation is dominated by neurologic manifestations. The youngest children may present with hypotonia and developmental delay, with the subsequent emergence of ataxia, dysarthria, dysphagia, and, in some individuals, epileptic seizures, dystonia, and gelastic cataplexy. Although cognitive impairment may be subtle at first, it eventually becomes apparent that affected individuals have a progressive dementia. Older teenagers and young adults may present predominantly with apparent early-onset dementia or psychiatric manifestations; however, careful examination usually identifies typical neurologic signs.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335942">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335969"><div><strong>Pontocerebellar hypoplasia type 1A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335969</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1843504</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pontocerebellar hypoplasia (PCH) refers to a group of severe neurodegenerative disorders affecting growth and function of the brainstem and cerebellum, resulting in little or no development. Different types were classified based on the clinical picture and the spectrum of pathologic changes. PCH type 1 is characterized by central and peripheral motor dysfunction associated with anterior horn cell degeneration resembling infantile spinal muscular atrophy (SMA; see SMA1, 253300); death usually occurs early.&#13; Genetic Heterogeneity of Pontocerebellar Hypoplasia&#13; Also see PCH1B (614678), caused by mutation in the EXOSC3 gene (606489); PCH1C (616081), caused by mutation in the EXOSC8 gene (606019); PCH1D (618065), caused by mutation in the EXOSC9 gene (606180); PCH1E (619303), caused by mutation in the SLC25A46 gene (610826); PCH1F (619304), caused by mutation in the EXOSC1 gene (606493); PCH2A (277470), caused by mutation in the TSEN54 gene (608755); PCH2B (612389), caused by mutation in the TSEN2 gene (608753); PCH2C (612390), caused by mutation in the TSEN34 gene (608754); PCH2D (613811), caused by mutation in the SEPSECS gene (613009); PCH3 (608027), caused by mutation in the PCLO gene (604918); PCH4 (225753), caused by mutation in the TSEN54 gene; PCH5 (610204), caused by mutation in the TSEN54 gene; PCH6 (611523), caused by mutation in the RARS2 gene (611524); PCH7 (614969), caused by mutation in the TOE1 gene (613931); PCH8 (614961), caused by mutation in the CHMP1A gene (164010); PCH9 (615809), caused by mutation in the AMPD2 gene (102771); PCH10 (615803), caused by mutation in the CLP1 gene (608757); PCH11 (617695), caused by mutation in the TBC1D23 gene (617687); PCH12 (618266), caused by mutation in the COASY gene (609855); PCH13 (618606), caused by mutation in the VPS51 gene (615738); PCH14 (619301), caused by mutation in the PPIL1 gene (601301); PCH15 (619302), caused by mutation in the CDC40 gene (605585); PCH16 (619527), caused by mutation in the MINPP1 gene (605391); and PCH17 (619909), caused by mutation in the PRDM13 gene (616741) on chromosome 6q16.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335969">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_336010"><div><strong>Spastic paraplegia, ataxia, and intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>336010</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1843661</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/336010">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_375311"><div><strong>Spinocerebellar ataxia type 21</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375311</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1843891</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spinocerebellar ataxia-21 (SCA21) is an autosomal dominant neurologic disorder characterized by onset in the first decades of life of slowly progressive cerebellar ataxia, which is associated with cognitive impairment in most patients (summary by Delplanque et al., 2014).&#13; For a general discussion of autosomal dominant spinocerebellar ataxia, see SCA1 (164400).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375311">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_334557"><div><strong>Male hypergonadotropic hypogonadism-intellectual disability-skeletal anomalies syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>334557</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1843994</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">This syndrome is characterized by hypergonadotropic hypogonadism, intellectual deficit, congenital skeletal anomalies involving the cervical spine and superior ribs, and diabetes mellitus.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/334557">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337064"><div><strong>Oto-palato-digital syndrome, type II</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337064</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1844696</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The X-linked otopalatodigital (X-OPD) spectrum disorders, characterized primarily by skeletal dysplasia, include the following: Otopalatodigital syndrome type 1 (OPD1). Otopalatodigital syndrome type 2 (OPD2). Frontometaphyseal dysplasia type 1 (FMD1). Melnick-Needles syndrome (MNS). Terminal osseous dysplasia with pigmentary skin defects (TODPD). In OPD1, most manifestations are present at birth; females can present with severity similar to affected males, although some have only mild manifestations. In OPD2, females are less severely affected than related affected males. Most males with OPD2 die during the first year of life, usually from thoracic hypoplasia resulting in pulmonary insufficiency. Males who live beyond the first year of life are usually developmentally delayed and require respiratory support and assistance with feeding. In FMD1, females are less severely affected than related affected males. Males do not experience a progressive skeletal dysplasia but may have joint contractures and hand and foot malformations. Progressive scoliosis is observed in both affected males and females. In MNS, wide phenotypic variability is observed; some individuals are diagnosed in adulthood, while others require respiratory support and have reduced longevity. MNS in males results in perinatal lethality in all recorded cases. TODPD, seen only in females, is characterized by a skeletal dysplasia that is most prominent in the digits, pigmentary defects of the skin, and recurrent digital fibromata.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337064">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_336803"><div><strong>Charcot-Marie-Tooth disease X-linked recessive 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>336803</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1844873</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic peripheral sensorimotor neuropathy with an X-linked recessive inheritance pattern and the infantile to childhood-onset of progressive, distal muscle weakness and atrophy (more prominent in the lower extremities than in the upper extremities), pes cavus, and absent tendon reflexes. Sensory impairment and intellectual disability has been reported in some individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/336803">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_336844"><div><strong>X-linked reticulate pigmentary disorder</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>336844</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845050</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked reticulate pigmentary disorder shows more severe manifestations in hemizygous males compared to heterozygous females. Affected males have early onset of recurrent respiratory infections and failure to thrive resulting from inflammatory gastroenteritis or colitis. Patients also show reticular pigmentation abnormalities of the skin and may develop corneal scarring. Carrier females may be unaffected or have only pigmentary abnormalities along the lines of Blaschko (summary by Starokadomskyy et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/336844">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337145"><div><strong>Alpha thalassemia-X-linked intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337145</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845055</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Alpha-thalassemia X-linked intellectual disability (ATR-X) syndrome is characterized by distinctive craniofacial features, genital anomalies, hypotonia, and mild-to-profound developmental delay / intellectual disability (DD/ID). Craniofacial abnormalities include small head circumference, telecanthus or widely spaced eyes, short triangular nose, tented upper lip, and thick or everted lower lip with coarsening of the facial features over time. While all affected individuals have a normal 46,XY karyotype, genital anomalies comprise a range from hypospadias and undescended testicles, to severe hypospadias and ambiguous genitalia, to normal-appearing female external genitalia. Alpha-thalassemia, observed in about 75% of affected individuals, is mild and typically does not require treatment. Osteosarcoma has been reported in a few males with germline pathogenic variants.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337145">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_375579"><div><strong>Cataract, ataxia, short stature, and intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375579</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845094</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375579">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335096"><div><strong>Deafness, X-linked 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335096</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845095</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked deafness-5 is a neurologic disorder characterized by childhood onset of auditory neuropathy and later onset of distal sensory impairment affecting the peripheral nervous system (summary by Zong et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335096">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_336862"><div><strong>X-linked intellectual disability-retinitis pigmentosa syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>336862</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845136</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked intellectual disability-retinitis pigmentosa syndrome is characterized by moderate intellectual deficit and severe, early-onset retinitis pigmentosa. It has been described in five males spanning three generations of one family. Some patients also had microcephaly. It is transmitted as an X-linked recessive trait.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/336862">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335109"><div><strong>Intellectual disability, X-linked 92</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335109</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845144</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335109">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335139"><div><strong>Syndromic X-linked intellectual disability Claes-Jensen type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335139</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845243</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Claes-Jensen type of X-linked syndromic intellectual developmental disorder (MRXSCJ) is characterized by impaired intellectual development with substantial clinical heterogeneity in affected males. However, males are usually reported to have short stature, microcephaly, hyperreflexia, and aggressive behavior. In rare cases, female carriers exhibit mildly impaired intellectual development or learning difficulties (summary by Guerra et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335139">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_375620"><div><strong>Deafness-intellectual disability, Martin-Probst type syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375620</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845285</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Martin-Probst syndrome (MRXSMP) is characterized by congenital sensorineural hearing loss, mild to severe cognitive impairment, short stature, and facial dysmorphism, including telecanthus, hypertelorism, epicanthic folds, broad mouth, and low-set ears. Variable features include renal and genitourinary abnormalities and late-onset pancytopenia (Martin et al., 2000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375620">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337201"><div><strong>Intellectual disability, X-linked 82</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337201</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845286</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337201">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_336901"><div><strong>Fanconi anemia complementation group B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>336901</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845292</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fanconi anemia (FA) is characterized by physical abnormalities, bone marrow failure, and increased risk for malignancy. Physical abnormalities, present in approximately 75% of affected individuals, include one or more of the following: short stature, abnormal skin pigmentation, skeletal malformations of the upper and/or lower limbs, microcephaly, and ophthalmic and genitourinary tract anomalies. Progressive bone marrow failure with pancytopenia typically presents in the first decade, often initially with thrombocytopenia or leukopenia. The incidence of acute myeloid leukemia is 13% by age 50 years. Solid tumors – particularly of the head and neck, skin, and genitourinary tract – are more common in individuals with FA.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/336901">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337203"><div><strong>Intellectual disability, X-linked 84</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337203</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845297</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337203">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_375633"><div><strong>Intellectual disability, X-linked 45</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375633</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845333</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the ZNF81 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375633">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335161"><div><strong>Autism, susceptibility to, X-linked 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335161</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845336</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">The spectrum of MECP2-related phenotypes in females ranges from classic Rett syndrome to variant Rett syndrome with a broader clinical phenotype (either milder or more severe than classic Rett syndrome) to mild learning disabilities; the spectrum in males ranges from severe neonatal encephalopathy to pyramidal signs, parkinsonism, and macroorchidism (PPM-X) syndrome to severe syndromic/nonsyndromic intellectual disability. Females: Classic Rett syndrome, a progressive neurodevelopmental disorder primarily affecting girls, is characterized by apparently normal psychomotor development during the first six to 18 months of life, followed by a short period of developmental stagnation, then rapid regression in language and motor skills, followed by long-term stability. During the phase of rapid regression, repetitive, stereotypic hand movements replace purposeful hand use. Additional findings include fits of screaming and inconsolable crying, autistic features, panic-like attacks, bruxism, episodic apnea and/or hyperpnea, gait ataxia and apraxia, tremors, seizures, and acquired microcephaly. Males: Severe neonatal-onset encephalopathy, the most common phenotype in affected males, is characterized by a relentless clinical course that follows a metabolic-degenerative type of pattern, abnormal tone, involuntary movements, severe seizures, and breathing abnormalities. Death often occurs before age two years.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335161">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_336920"><div><strong>X-linked intellectual disability-cerebellar hypoplasia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>336920</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845366</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Billuart-type X-linked syndromic intellectual developmental disorder (MRXSBL) is characterized by moderately to severely impaired intellectual development, cerebellar hypoplasia, and seizures. Dysmorphic facial features include deep-set eyes, short philtrum, and large ears (summary by Chabrol et al., 2005, Al-Owain et al., 2011).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/336920">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335185"><div><strong>Corpus callosum agenesis-intellectual disability-coloboma-micrognathia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335185</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845446</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Corpus callosum agenesis-intellectual disability-coloboma-micrognathia syndrome is a developmental anomalies syndrome characterized by coloboma of the iris and optic nerve, facial dysmorphism (high forehead, microretrognathia, low-set ears), intellectual deficit, agenesis of the corpus callosum (ACC), sensorineural hearing loss, skeletal anomalies and short stature.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335185">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335199"><div><strong>Intellectual disability, X-linked 77</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335199</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845499</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335199">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337255"><div><strong>Intellectual disability, X-linked 46</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337255</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845526</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the ARHGEF6 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337255">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335203"><div><strong>Intellectual disability, X-linked 81</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335203</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845531</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335203">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335205"><div><strong>Autism, susceptibility to, X-linked 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335205</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845540</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Autism, the prototypic pervasive developmental disorder (PDD), is usually apparent by 3 years of age. It is characterized by a triad of limited or absent verbal communication, a lack of reciprocal social interaction or responsiveness, and restricted, stereotypic, and ritualized patterns of interests and behavior (Bailey et al., 1996; Risch et al., 1999). 'Autism spectrum disorder,' sometimes referred to as ASD, is a broader phenotype encompassing the less severe disorders Asperger syndrome (see ASPG1; 608638) and pervasive developmental disorder, not otherwise specified (PDD-NOS). 'Broad autism phenotype' includes individuals with some symptoms of autism, but who do not meet the full criteria for autism or other disorders. Mental retardation coexists in approximately two-thirds of individuals with ASD, except for Asperger syndrome, in which mental retardation is conspicuously absent (Jones et al., 2008). Genetic studies in autism often include family members with these less stringent diagnoses (Schellenberg et al., 2006).&#13; For a discussion of genetic heterogeneity of autism, see 209850.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335205">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337257"><div><strong>Syndromic X-linked intellectual disability Hedera type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337257</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845543</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The Hedera type of X-linked syndromic intellectual developmental disorder (MRXSH) is characterized by global developmental delay apparent from infancy and progressive neurologic decline with abnormal movements, spasticity, and seizures. Brain imaging shows volume loss of cortical white and gray matter, thin corpus callosum, and myelination defects, consistent with a neurodegenerative process. Only males are affected (summary by Hirose et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337257">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_336965"><div><strong>FG syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>336965</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845546</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CASK disorders include a spectrum of phenotypes in both females and males. Two main types of clinical presentation are seen: Microcephaly with pontine and cerebellar hypoplasia (MICPCH), generally associated with pathogenic loss-of-function variants in CASK. X-linked intellectual disability (XLID) with or without nystagmus, generally associated with hypomorphic CASK pathogenic variants. MICPCH is typically seen in females with moderate-to-severe intellectual disability, progressive microcephaly with or without ophthalmologic anomalies, and sensorineural hearing loss. Most are able to sit independently; 20%-25% attain the ability to walk; language is nearly absent in most. Neurologic features may include axial hypotonia, hypertonia/spasticity of the extremities, and dystonia or other movement disorders. Nearly 40% have seizures by age ten years. Behaviors may include sleep disturbances, hand stereotypies, and self biting. MICPCH in males may occur with or without severe epileptic encephalopathy in addition to severe-to-profound developmental delay. When seizures are present they occur early and may be intractable. In individuals and families with milder (i.e., hypomorphic) pathogenic variants, the clinical phenotype is usually that of XLID with or without nystagmus and additional clinical features. Males have mild-to-severe intellectual disability, with or without nystagmus and other ocular features. Females typically have normal intelligence with some displaying mild-to-severe intellectual disability with or without ocular features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/336965">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_375687"><div><strong>FG syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375687</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845567</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375687">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337002"><div><strong>Intellectual disability, X-linked 63</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337002</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845672</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the ACSL4 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337002">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337334"><div><strong>X-linked intellectual disability Cabezas type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337334</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845861</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The Cabezas type of X-linked syndromic intellectual developmental disorder is characterized primarily by short stature, hypogonadism, and abnormal gait, with other more variable features such as speech delay, prominent lower lip, and tremor (Cabezas et al., 2000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337334">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337451"><div><strong>Creatine transporter deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337451</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845862</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The creatine deficiency disorders (CDDs), inborn errors of creatine metabolism and transport, comprise three disorders: the creatine biosynthesis disorders guanidinoacetate methyltransferase (GAMT) deficiency and L-arginine:glycine amidinotransferase (AGAT) deficiency; and creatine transporter (CRTR) deficiency. Developmental delay and cognitive dysfunction or intellectual disability and speech-language disorder are common to all three CDDs. Onset of clinical manifestations of GAMT deficiency (reported in ~130 individuals) is between ages three months and two years; in addition to developmental delays, the majority of individuals have epilepsy and develop a behavior disorder (e.g., hyperactivity, autism, or self-injurious behavior), and about 30% have movement disorder. AGAT deficiency has been reported in 16 individuals; none have had epilepsy or movement disorders. Clinical findings of CRTR deficiency in affected males (reported in ~130 individuals) in addition to developmental delays include epilepsy (variable seizure types and may be intractable) and behavior disorders (e.g., attention deficit and/or hyperactivity, autistic features, impulsivity, social anxiety), hypotonia, and (less commonly) a movement disorder. Poor weight gain with constipation and prolonged QTc on EKG have been reported. While mild-to-moderate intellectual disability is commonly observed up to age four years, the majority of adult males with CRTR deficiency have been reported to have severe intellectual disability. Females heterozygous for CRTR deficiency are typically either asymptomatic or have mild intellectual disability, although a more severe phenotype resembling the male phenotype has been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337451">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335296"><div><strong>Intellectual disability, X-linked 53</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335296</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845889</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335296">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335320"><div><strong>Uruguay Faciocardiomusculoskeletal syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335320</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846010</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Uruguay faciocardiomusculoskeletal syndrome (FCMSU) is an X-linked disorder in which affected males have a distinctive facial appearance, muscular hypertrophy, and cardiac ventricular hypertrophy leading to premature death. Additional features include large, broad, and deformed hands and feet, congenital hip dislocation, and scoliosis (summary by Xue et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335320">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_375793"><div><strong>Intellectual disability, X-linked 72</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375793</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846038</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375793">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_375796"><div><strong>Hereditary spastic paraplegia 16</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375796</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846046</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegias (SPGs) are a genetically heterogeneous group of neurologic disorders characterized by progressive weakness and spasticity of the legs. Complicated SPGs are accompanied by additional neurologic symptoms such as cerebellar ataxia, sensory loss, mental retardation, nystagmus, and optic atrophy (summary by Steinmuller et al., 1997).&#13; A locus for spastic paraplegia-16 has been mapped to Xq11.2-q23 (Steinmuller et al., 1997).&#13; For a discussion of genetic heterogeneity of X-linked spastic paraplegia, see 303350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375796">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337375"><div><strong>Syndromic X-linked intellectual disability Siderius type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337375</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846055</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Siderius-type syndromic intellectual developmental disorder (MRXSSD) is an X-linked disorder in which affected males have mildly impaired intellectual development, mild dysmorphic features, and bilateral or unilateral cleft lip/palate (summary by Koivisto et al., 2007).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337375">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337376"><div><strong>Syndromic X-linked intellectual disability Abidi type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337376</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846056</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked intellectual disability, Abidi type is characterized by X-linked intellectual deficit and mild variable manifestations, including short stature, small head circumference, sloping forehead, hearing loss, abnormally shaped ears, and small testes. It has been described in eight affected males from three generations.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337376">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_375800"><div><strong>Armfield syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375800</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846057</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MRXSA is an X-linked recessive neurodevelopmental disorder characterized by global developmental delay with impaired intellectual development, usually accompanied by walking difficulties and poor or absent speech. Affected individuals have dysmorphic features, including large head circumference, downslanting palpebral fissures, bulbous nose, high-arched palate, short stature, and small hands and feet. Ocular anomalies, including strabismus, exotropia, myopia, and keratoconus, are common. Some patients may develop seizures. Additional variable features, such as mild congenital heart defects, joint stiffness, renal anomalies, and hemangiomas, may also be present (summary by Lee et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375800">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337403"><div><strong>Syndromic X-linked intellectual disability 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337403</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846170</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">This syndrome has characteristics of X-linked intellectual deficit, obesity, hypogonadism, and tapering fingers. It has been described in ten males from a large Pakistani family. The causative gene has been located to Xp11.3-Xq23.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337403">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337526"><div><strong>Intellectual disability, X-linked 58</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337526</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846174</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the TSPAN7 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337526">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337424"><div><strong>Alport syndrome-intellectual disability-midface hypoplasia-elliptocytosis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337424</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846242</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The AMME complex is an X-linked contiguous gene deletion syndrome with features of Alport syndrome (see 301050), impaired intellectual development, midface hypoplasia, and elliptocytosis in affected males (summary by Meloni et al., 2002).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337424">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_375855"><div><strong>MEHMO syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375855</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846278</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MEHMO syndrome is a rare intellectual disability disorder that exhibits phenotypic heterogeneity and is variably characterized by impaired intellectual development, epileptic seizures, hypogonadism with hypogenitalism, microcephaly, and obesity. Life expectancy ranges from less than 1 year to adulthood, and the condition is associated with significant morbidity and mortality (summary by Gregory et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375855">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_339510"><div><strong>Isolated focal cortical dysplasia type II</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>339510</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846385</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Focal cortical dysplasia type II (FCORD2), or focal cortical dysplasia of Taylor (FCDT), is a cerebral developmental malformation that results in a clinical phenotype of intractable epilepsy, usually requiring surgery. FCORD2 has been classified histologically into 2 subtypes: a type without balloon cells, known as type IIA, and a type with balloon cells, known as type IIB (Palmini et al., 2004). Affected individuals have refractory seizures, usually with onset in early childhood, and may have persistent intellectual disability. Most patients require neurosurgical resection of affected brain tissue to ameliorate seizure frequency and severity (summary by Moller et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/339510">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376107"><div><strong>Bilateral frontoparietal polymicrogyria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376107</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1847352</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Complex cortical dysplasia with other brain malformations-14A (CDCBM14A) is an autosomal recessive neurologic disorder characterized by global developmental delay with impaired intellectual development, motor delay, poor speech development, and early-onset seizures, often focal or atypical absence. Additional features may include strabismus, nystagmus, exo- or esotropia, axial hypotonia, and spasticity. Brain imaging shows bilateral frontoparietal polymicrogyria, a frontal-predominant cobblestone malformation of the cortex, scalloping of the cortical/white matter junction, enlarged ventricles, and hypoplasia of the pons, brainstem, and cerebellum. The disorder can be classified as a malformation of cortical development (summary by Parrini et al., 2009; Luo et al., 2011; Zulfiqar et al., 2021).&#13; For a discussion of genetic heterogeneity of CDCBM, see CDCBM1 (614039).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376107">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335673"><div><strong>Cree intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335673</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1847361</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335673">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376145"><div><strong>Intellectual disability-obesity-prognathism-eye and skin anomalies syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376145</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1847522</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic syndromic intellectual disability disorder with characteristics of mild to profound intellectual disability, delayed speech, obesity, ocular anomalies (blepharophimosis, blepharoptosis, hyperopic astigmatism, decreased visual acuity, strabismus, abducens nerve palsy, and/or accommodative esotropia), and dermal manifestations, such as chronic atopic dermatitis. Associated craniofacial dysmorphism includes macrocephaly, maxillary hypoplasia, mandibular prognathism and crowding of teeth.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376145">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376153"><div><strong>Hyperinsulinism-hyperammonemia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376153</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1847555</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital hyperinsulinism is a condition that causes individuals to have abnormally high levels of insulin. Insulin is a hormone that helps control levels of blood glucose, also called blood sugar. People with this condition have frequent episodes of low blood glucose (hypoglycemia). In infants and young children, these episodes are characterized by a lack of energy (lethargy), irritability, or difficulty feeding. Repeated episodes of low blood glucose increase the risk for serious complications such as breathing difficulties, seizures, intellectual disability, vision loss, brain damage, and coma.\n\nThe severity of congenital hyperinsulinism varies widely among affected individuals, even among members of the same family. About 60 percent of infants with this condition experience a hypoglycemic episode within the first month of life. Other affected children develop hypoglycemia by early childhood. Unlike typical episodes of hypoglycemia, which occur most often after periods without food (fasting) or after exercising, episodes of hypoglycemia in people with congenital hyperinsulinism can also occur after eating.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376153">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338301"><div><strong>Spinocerebellar ataxia type 15/16</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338301</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1847725</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spinocerebellar ataxia-15 (SCA15) is an autosomal dominant, adult-onset, slowly progressive form of cerebellar ataxia. Most patients also have disabling action and postural tremor, and some have pyramidal tract affection, dorsal column involvement, and gaze palsy. Brain imaging shows cerebellar atrophy mainly affecting the vermis (summary by Synofzik et al., 2011).&#13; Autosomal dominant 'pure' cerebellar ataxia, classified as ADCA type III by Harding (1983, 1993), is a genetically heterogeneous disorder (see, e.g., 117210).&#13; For a general discussion of autosomal dominant spinocerebellar ataxia, see SCA1 (164400).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338301">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_335764"><div><strong>Muscular dystrophy-dystroglycanopathy type B5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335764</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1847759</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MDDGB5 is an autosomal recessive congenital muscular dystrophy with impaired intellectual development and structural brain abnormalities (Brockington et al., 2001). It is part of a group of similar disorders resulting from defective glycosylation of alpha-dystroglycan (DAG1; 128239), collectively known as 'dystroglycanopathies' (Mercuri et al., 2006).&#13; For a discussion of genetic heterogeneity of congenital muscular dystrophy-dystroglycanopathy type B, see MDDGB1 (613155).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335764">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376281"><div><strong>X-linked spondyloepimetaphyseal dysplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376281</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848097</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked spondyloepimetaphyseal dysplasia (SEMDX) is characterized by anomalies of the spine and the epiphyses and metaphyses of the long bones, resulting in short stature and osteoarthritic changes of the joints. Patients with SEMDX show rhizomelic shortening of the limbs and short limb-to-trunk ratio, significant bowing of the legs, waddling gait with lumbar lordosis, and brachydactyly (Cho et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376281">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338393"><div><strong>Developmental and epileptic encephalopathy, 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338393</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848137</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-9 (DEE9) is an X-linked disorder characterized by seizure onset in infancy and mild to severe intellectual impairment. Autistic and psychiatric features have been reported in some individuals. The disorder affects heterozygous females only; transmitting males are unaffected (summary by Jamal et al., 2010).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of developmental and epileptic encephalopathy, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338393">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341214"><div><strong>CHIME syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341214</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848392</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CHIME syndrome, also known as Zunich neuroectodermal syndrome, is an extremely rare autosomal recessive multisystem disorder clinically characterized by colobomas, congenital heart defects, migratory ichthyosiform dermatosis, mental retardation, and ear anomalies (CHIME). Other clinical features include distinctive facial features, abnormal growth, genitourinary abnormalities, seizures, and feeding difficulties (summary by Ng et al., 2012). The disorder is caused by a defect in glycosylphosphatidylinositol (GPI) biosynthesis.&#13; For a discussion of genetic heterogeneity of GPI biosynthesis defects, see GPIBD1 (610293).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341214">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_336345"><div><strong>Intellectual disability, Wolff type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>336345</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848439</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare intellectual disability syndrome with manifestations of severe intellectual disability, characteristic facial features (low anterior hairline, upward slanting palpebral fissures, ocular hypertelorism, broad, bulbous nose, large ears with helix incompletely developed, thick lips, and micrognathia) and additional anomalies including peripheral joint contractures, delayed skeletal maturation, bilateral cleft lip and palate, strabismus, terminal hypoplasia of fingers, hypospadias, and bilateral inguinal hernias.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/336345">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341253"><div><strong>Methylmalonic aciduria and homocystinuria type cblD</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341253</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848552</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Disorders of intracellular cobalamin metabolism have a variable phenotype and age of onset that are influenced by the severity and location within the pathway of the defect. The prototype and best understood phenotype is cblC; it is also the most common of these disorders. The age of initial presentation of cblC spans a wide range: In utero with fetal presentation of nonimmune hydrops, cardiomyopathy, and intrauterine growth restriction. Newborns, who can have microcephaly, poor feeding, and encephalopathy. Infants, who can have poor feeding and slow growth, neurologic abnormality, and, rarely, hemolytic uremic syndrome (HUS). Toddlers, who can have poor growth, progressive microcephaly, cytopenias (including megaloblastic anemia), global developmental delay, encephalopathy, and neurologic signs such as hypotonia and seizures. Adolescents and adults, who can have neuropsychiatric symptoms, progressive cognitive decline, thromboembolic complications, and/or subacute combined degeneration of the spinal cord.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341253">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341256"><div><strong>Cobalamin C disease</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341256</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848561</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Disorders of intracellular cobalamin metabolism have a variable phenotype and age of onset that are influenced by the severity and location within the pathway of the defect. The prototype and best understood phenotype is cblC; it is also the most common of these disorders. The age of initial presentation of cblC spans a wide range: In utero with fetal presentation of nonimmune hydrops, cardiomyopathy, and intrauterine growth restriction. Newborns, who can have microcephaly, poor feeding, and encephalopathy. Infants, who can have poor feeding and slow growth, neurologic abnormality, and, rarely, hemolytic uremic syndrome (HUS). Toddlers, who can have poor growth, progressive microcephaly, cytopenias (including megaloblastic anemia), global developmental delay, encephalopathy, and neurologic signs such as hypotonia and seizures. Adolescents and adults, who can have neuropsychiatric symptoms, progressive cognitive decline, thromboembolic complications, and/or subacute combined degeneration of the spinal cord.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341256">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338528"><div><strong>T-substance anomaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338528</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848724</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338528">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338532"><div><strong>Trichomegaly-retina pigmentary degeneration-dwarfism syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338532</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848745</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PNPLA6 disorders span a phenotypic continuum characterized by variable combinations of cerebellar ataxia; upper motor neuron involvement manifesting as spasticity and/or brisk reflexes; chorioretinal dystrophy associated with variable degrees of reduced visual function; and hypogonadotropic hypogonadism (delayed puberty and lack of secondary sex characteristics). The hypogonadotropic hypogonadism occurs either in isolation or as part of anterior hypopituitarism (growth hormone, thyroid hormone, or gonadotropin deficiencies). Common but less frequent features are peripheral neuropathy (usually of axonal type manifesting as reduced distal reflexes, diminished vibratory sensation, and/or distal muscle wasting); hair anomalies (long eyelashes, bushy eyebrows, or scalp alopecia); short stature; and impaired cognitive functioning (learning disabilities in children; deficits in attention, visuospatial abilities, and recall in adults). Some of these features can occur in distinct clusters on the phenotypic continuum: Boucher-Neuhäuser syndrome (cerebellar ataxia, chorioretinal dystrophy, and hypogonadotropic hypogonadism); Gordon Holmes syndrome (cerebellar ataxia, hypogonadotropic hypogonadism, and – to a variable degree – brisk reflexes); Oliver-McFarlane syndrome (trichomegaly, chorioretinal dystrophy, short stature, intellectual disability, and hypopituitarism); Laurence-Moon syndrome; and spastic paraplegia type 39 (SPG39) (upper motor neuron involvement, peripheral neuropathy, and sometimes reduced cognitive functioning and/or cerebellar ataxia).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338532">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_336422"><div><strong>Thyroid dyshormonogenesis 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>336422</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848805</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Approximately 10% of patients with congenital hypothyroidism harbor inborn errors of metabolism in one of the steps for thyroid hormone synthesis in thyrocytes (Vono-Toniolo et al., 2005). Dyshormonogenesis can be caused by recessive defects at any of the steps required for normal thyroid hormone synthesis. In untreated patients thyroid dyshormonogenesis is typically associated with goitrous enlargement of the thyroid secondary to long-term thyrotropin (TSH; see 188540) stimulation.&#13; Park and Chatterjee (2005) reviewed the genetics of primary congenital hypothyroidism, summarizing the different phenotypes associated with known genetic defects and proposing an algorithm for investigating the genetic basis of the disorder.&#13; Genetic Heterogeneity of Thyroid Dyshormonogenesis&#13; Other forms of thyroid hormone dysgenesis include TDH2A (274500), caused by mutation in the thyroid peroxidase gene (TPO; 606765) on 2p25; Pendred syndrome, a form of thyroid hormone dysgenesis associated with deafness (TDH2B; 274600) and caused by mutation in the SLC26A4 gene (605646) on 7q31; TDH3 (274700), caused by mutation in the thyroglobulin gene (TG; 188450) on 8q24; TDH4 (274800), caused by mutation in the iodotyrosine deiodinase gene (IYD; 612025) on 6q25; TDH5 (274900), caused by mutation in the DUOXA2 gene (612772) on 15q21; and TDH6 (607200), caused by mutation in the DUOX2 gene (606759) on 15q21.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/336422">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338577"><div><strong>Cold-induced sweating syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338577</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848947</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cold-induced sweating syndrome (CISS) and its infantile presentation, Crisponi syndrome(CS) is characterized by dysmorphic features (distinctive facies, lower facial weakness, flexion deformity at the elbows, camptodactyly with fisted hands, misshapen feet, and overriding toes); intermittent contracture of facial and oropharyngeal muscles when crying or being handled with puckering of lips and drooling of foamy saliva often associated with laryngospasm and respiratory distress; excessive startling and opisthotonus-like posturing with unexpected tactile or auditory stimuli; poor suck reflex and severely impaired swallowing; and a scaly erythematous rash. During the first decade of life, children with CISS/CS develop profuse sweating of the face, arms, and chest with ambient temperatures below 18º to 22º C, and with other stimuli including nervousness or ingestion of sweets. Affected individuals sweat very little in hot environments and may feel overheated. Progressive thoracolumbar kyphoscoliosis occurs, requiring intervention in the second decade.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338577">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338583"><div><strong>Sucrosuria, hiatus hernia and intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338583</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848963</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338583">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338603"><div><strong>Spondyloepiphyseal dysplasia tarda, Kohn type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338603</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849053</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spondyloepiphyseal dysplasia tarda, Kohn type is characterized by short trunk dwarfism, progressive involvement of the spine and epiphyses and mild-to-moderate intellectual deficit.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338603">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338605"><div><strong>Brachyolmia type 1, Hobaek type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338605</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849055</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rock et al. (2008) provided an overview of the brachyolmias, a heterogeneous group of skeletal dysplasias that affect primarily the spine. Type 1 brachyolmia includes the Hobaek and Toledo (BCYM1B; 271630) forms, which are inherited in an autosomal recessive fashion. Both forms of type 1 are characterized by scoliosis, platyspondyly with rectangular and elongated vertebral bodies, overfaced pedicles, and irregular, narrow intervertebral spaces. The Toledo form is distinguished by the presence of corneal opacities and precocious calcification of the costal cartilage. Type 2 brachyolmia (BCYM2; 613678), sometimes referred to as the Maroteaux type, is also an autosomal recessive disorder, primarily distinguished from type 1 by rounded vertebral bodies and less overfaced pedicles. Some cases are associated with precocious calcification of the falx cerebri. Type 3 brachyolmia (BCYM3; 113500) is an autosomal dominant form, caused by mutation in the TRPV4 gene (605427), with severe kyphoscoliosis and flattened, irregular cervical vertebrae. Paradoxically, although the limbs are mildly shortened in all types of brachyolmia, they show minimal epiphyseal and metaphyseal abnormalities on radiographs. Type 4 brachyolmia (BCYM4; 612847) is an autosomal recessive form, caused by mutation in the PAPSS2 gene (603005), with mild epiphyseal and metaphyseal changes.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338605">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341379"><div><strong>Corneal-cerebellar syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341379</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849087</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome with the unusual combination of spinocerebellar degeneration and corneal dystrophy. Three sisters born to normal consanguineous parents have been reported, one of who had only minor spinocerebellar signs without ocular involvement. This autosomal recessive syndrome differs from the Mousa-Al-Din-Al-Nassar syndrome by the subnormal intellectual development and the epithelial (versus stromal) nature of the corneal dystrophy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341379">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338613"><div><strong>Infantile onset spinocerebellar ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338613</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849096</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial DNA depletion syndrome-7 is an autosomal recessive severe neurodegenerative disorder characterized primarily by hypotonia, ataxia, ophthalmoplegia, hearing loss, seizures, and sensory axonal neuropathy. Although originally classified as a form of spinocerebellar ataxia (see, e.g., SCA1, 164400) (Koskinen et al., 1994), it has been reclassified as a mitochondrial DNA depletion syndrome (Hakonen et al., 2008) based on the finding of mtDNA depletion in the brain and liver of affected individuals.&#13; For a discussion of genetic heterogeneity of autosomal recessive mtDNA depletion syndromes, see MTDPS1 (603041).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338613">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376518"><div><strong>Spinal muscular atrophy with intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376518</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849109</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376518">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376519"><div><strong>Spastic tetraplegia-retinitis pigmentosa-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376519</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849112</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare, genetic, syndromic intellectual disability disorder characterized by the association of nonprogressive spastic quadriparesis, retinitis pigmentosa, intellectual disability, and variable deafness. There have been no further descriptions in the literature since 1976.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376519">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376520"><div><strong>Spastic paraplegia-glaucoma-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376520</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849113</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia-glaucoma-intellectual disability syndrome is characterized by progressive spastic paraplegia, glaucoma and intellectual deficit. It has been described in two families. The second described sibship was born to consanguineous parents. The mode of inheritance is autosomal recessive.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376520">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341387"><div><strong>Hereditary spastic paraplegia 15</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341387</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849128</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia 15 (SPG15), typically an early-onset complex hereditary spastic paraplegia, is characterized by progressive spasticity that begins in the lower extremities and is associated with several manifestations resulting from central and peripheral nervous system dysfunction. While onset of spasticity is typically in mid- to late childhood or adolescence (i.e., between ages 5 and 18 years), other manifestations, such as developmental delay or learning disability, may be present earlier, often preceding motor involvement. Individuals with adult onset have also been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341387">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376526"><div><strong>Spastic diplegia and intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376526</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849139</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376526">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338620"><div><strong>Charlevoix-Saguenay spastic ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338620</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849140</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spastic ataxia of Charlevoix-Saguenay (ARSACS) is clinically characterized by a progressive cerebellar ataxia, peripheral neuropathy, and spasticity. Disease onset of classic ARSACS is often in early childhood, leading to delayed walking because of gait unsteadiness in very young toddlers, while an increasing number of individuals with disease onset in teenage or early-adult years are now being described. Typically the ataxia is followed by lower-limb spasticity and later by peripheral neuropathy – although pronounced peripheral neuropathy has been observed as a first sign of ARSACS. Oculomotor disturbances, dysarthria, and upper-limb ataxia develop with slower progression than the other findings. Brain imaging demonstrates atrophy of the superior vermis and the cerebellar hemisphere with additional findings on MRI, such as linear hypointensities in the pons and hyperintense rims around the thalami. Many affected individuals (though not all) have yellow streaks of hypermyelinated fibers radiating from the edges of the optic disc noted on ophthalmologic exam, and thickened retinal fibers can be demonstrated by optical coherence tomography. Mild intellectual disability, hearing loss, and urinary urgency and incontinence have been reported in some individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338620">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338622"><div><strong>Growth delay due to insulin-like growth factor I resistance</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338622</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849157</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Patients with mutations in the receptor for insulin-like growth factor I show intrauterine growth retardation and postnatal growth failure, resulting in short stature and microcephaly. Other features may include delayed bone age, developmental delay, and dysmorphic features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338622">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340297"><div><strong>Ectodermal dysplasia-blindness syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340297</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849332</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare multiple congenital anomalies/dysmorphic syndrome characterized by intellectual disability, severe visual impairment due to ocular malformations (microphthalmos and microcornea with sclerocornea), short stature, hypotrichosis, dental anomalies, and dysmorphic facial features (such as a narrow nasal bridge with marked distal flaring and low-set, protruding ears). There have been no further descriptions in the literature since 1992.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340297">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340317"><div><strong>Retinitis pigmentosa-intellectual disability-deafness-hypogenitalism syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340317</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849401</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare syndromic retinitis pigmentosa characterized by pigmentary retinopathy, diabetes mellitus with hyperinsulinism, acanthosis nigricans, secondary cataracts, neurogenic deafness, short stature mild hypogonadism in males and polycystic ovaries with oligomenorrhea in females. Inheritance is thought to be autosomal recessive. It can be distinguished from Alstrom syndrome (see this term) by the presence of intellectual disability and the absence of renal insufficiency. There have been no further descriptions in the literature since 1993.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340317">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340341"><div><strong>Pyridoxine-dependent epilepsy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340341</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849508</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pyridoxine-dependent epilepsy – ALDH7A1 (PDE-ALDH7A1) is characterized by seizures not well controlled with anti-seizure medication that are responsive clinically and electrographically to large daily supplements of pyridoxine (vitamin B6). This is true across a phenotypic spectrum that ranges from classic to atypical PDE-ALDH7A1. Intellectual disability is common, particularly in classic PDE-ALDH7A1. In classic PDE-ALDH7A1, untreated seizures begin within the first weeks to months of life. Dramatic presentations of prolonged seizures and recurrent episodes of status epilepticus are typical; recurrent self-limited events including partial seizures, generalized seizures, atonic seizures, myoclonic events, and infantile spasms also occur. Electrographic seizures can occur without clinical correlates. In atypical PDE-ALDH7A1, findings in untreated individuals can include late-onset seizures beginning between late infancy and age three years, seizures that initially respond to anti-seizure medication and then become intractable, seizures during early life that do not respond to pyridoxine but are subsequently controlled with pyridoxine several months later, and prolonged seizure-free intervals (=5 months) that occur after discontinuation of pyridoxine.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340341">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340355"><div><strong>Congenital pulmonary lymphangiectasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340355</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849554</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Pulmonary lymphangiectasia is a rare congenital vascular dysplasia characterized by an increased number of dilated pulmonary lymphatics in the subpleural, peribronchial, and interlobular septa. Respiratory distress is usually noted immediately after birth (summary by Stevenson et al., 2006).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340355">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376629"><div><strong>Pseudouridinuria and mental defect</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376629</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849648</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376629">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337969"><div><strong>Parkinsonian-pyramidal syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337969</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850100</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Parkinson's disease is a progressive disorder of the nervous system. The disorder affects several regions of the brain, especially an area called the substantia nigra that controls balance and movement.\n\nGenerally, Parkinson's disease that begins after age 50 is called late-onset disease. The condition is described as early-onset disease if signs and symptoms begin before age 50. Early-onset cases that begin before age 20 are sometimes referred to as juvenile-onset Parkinson's disease.\n\nOften the first symptom of Parkinson's disease is trembling or shaking (tremor) of a limb, especially when the body is at rest. Typically, the tremor begins on one side of the body, usually in one hand. Tremors can also affect the arms, legs, feet, and face. Other characteristic symptoms of Parkinson's disease include rigidity or stiffness of the limbs and torso, slow movement (bradykinesia) or an inability to move (akinesia), and impaired balance and coordination (postural instability). These symptoms worsen slowly over time.\n\nParkinson's disease can also affect emotions and thinking ability (cognition). Some affected individuals develop psychiatric conditions such as depression and visual hallucinations. People with Parkinson's disease also have an increased risk of developing dementia, which is a decline in intellectual functions including judgment and memory.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337969">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_342420"><div><strong>Autosomal recessive osteopetrosis 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342420</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850126</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Osteopetrosis is a bone disease that makes bone tissue abnormally compact and dense and also prone to breakage (fracture). Researchers have described several major types of osteopetrosis, which are usually distinguished by their pattern of inheritance: autosomal dominant or autosomal recessive. The different types of the disorder can also be distinguished by the severity of their signs and symptoms.\n\nAutosomal dominant osteopetrosis (ADO), which is also called Albers-Schönberg disease, is typically the mildest type of the disorder. Some affected individuals have no symptoms. In affected people with no symptoms, the unusually dense bones may be discovered by accident when an x-ray is done for another reason. \n\nIn individuals with ADO who develop signs and symptoms, the major features of the condition include multiple bone fractures after minor injury, abnormal side-to-side curvature of the spine (scoliosis) or other spinal abnormalities, arthritis in the hips, and a bone infection called osteomyelitis. These problems usually become apparent in late childhood or adolescence.\n\nAutosomal recessive osteopetrosis (ARO) is a more severe form of the disorder that becomes apparent in early infancy. Affected individuals have a high risk of bone fracture resulting from seemingly minor bumps and falls. Their abnormally dense skull bones pinch nerves in the head and face (cranial nerves), often resulting in vision loss, hearing loss, and paralysis of facial muscles. Dense bones can also impair the function of bone marrow, preventing it from producing new blood cells and immune system cells. As a result, people with severe osteopetrosis are at risk of abnormal bleeding, a shortage of red blood cells (anemia), and recurrent infections. In the most severe cases, these bone marrow abnormalities can be life-threatening in infancy or early childhood.\n\nOther features of autosomal recessive osteopetrosis can include slow growth and short stature, dental abnormalities, and an enlarged liver and spleen (hepatosplenomegaly). Depending on the genetic changes involved, people with severe osteopetrosis can also have brain abnormalities, intellectual disability, or recurrent seizures (epilepsy).\n\nA few individuals have been diagnosed with intermediate autosomal osteopetrosis (IAO), a form of the disorder that can have either an autosomal dominant or an autosomal recessive pattern of inheritance. The signs and symptoms of this condition become noticeable in childhood and include an increased risk of bone fracture and anemia. People with this form of the disorder typically do not have life-threatening bone marrow abnormalities. However, some affected individuals have had abnormal calcium deposits (calcifications) in the brain, intellectual disability, and a form of kidney disease called renal tubular acidosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342420">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337979"><div><strong>Osteopenia-intellectual disability-sparse hair syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337979</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850140</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare syndrome described in two sisters of Mennonite descent, with characteristics of sparse hair, osteopenia, intellectual disability, minor facial abnormalities, joint laxity and hypotonia. There have been no further descriptions in the literature since 1992.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337979">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_342472"><div><strong>Oliver syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342472</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850320</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A very rare syndrome with characteristics of intellectual deficit, postaxial polydactyly and epilepsy. To date, seven individuals in three families have been reported. Facial features are not characteristic except for a prominent jaw. Concordant features in all subjects are postaxial polydactyly, which in four individuals affect also the feet, and intellectual deficit, which is usually severe, with absent or indistinct speech. Seizures are common with onset in the first months of life or in early childhood. Cutaneous syndactyly, camptodactyly and clinodactyly of fingers and brachydactyly and syndactyly of the toes have been recorded.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342472">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340516"><div><strong>Oculorenocerebellar syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340516</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850331</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare multiple congenital anomalies/dysmorphic syndrome with characteristics of profound intellectual disability, choreoathetosis, progressive spastic diplegia, progressive tapetoretinal degeneration with loss of retinal vessels and glomerulopathy resulting in death late in the first or early in the second decade of life. Absence of the cerebellar granular layer has been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340516">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338025"><div><strong>Oculo-palato-cerebral syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338025</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850338</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Oculopalatocerebral syndrome is a rare disorder characterized by low birth weight, microcephaly, persistent hyperplastic primary vitreous, microphthalmia, large ears, small hands and feet, cleft palate, joint hypermobility, developmental delay, and cerebral atrophy (summary by Pellegrino et al., 2001).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338025">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376775"><div><strong>Giant axonal neuropathy 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376775</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850386</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GAN-related neurodegeneration comprises a phenotypic continuum ranging from severe (sometimes called classic giant axonal neuropathy) to milder pure early-onset peripheral motor and sensory neuropathies. The classic giant axonal neuropathy phenotype typically manifests as an infantile-onset neurodegenerative disorder, starting as a severe peripheral motor and sensory neuropathy and evolving into central nervous system impairment (intellectual disability, seizures, cerebellar signs, and pyramidal tract signs). Most affected individuals become wheelchair dependent in the second decade of life and eventually bedridden with severe polyneuropathy, ataxia, and dementia. Death usually occurs in the third decade. At the milder end of the spectrum are predominantly motor and sensory neuropathies (with little to no CNS involvement) that overlap with the axonal form of Charcot-Marie-Tooth neuropathies.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376775">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338045"><div><strong>Mitochondrial DNA depletion syndrome 6 (hepatocerebral type)</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338045</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850406</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MPV17-related mitochondrial DNA (mtDNA) maintenance defect presents in the vast majority of affected individuals as an early-onset encephalohepatopathic (hepatocerebral) disease that is typically associated with mtDNA depletion, particularly in the liver. A later-onset neuromyopathic disease characterized by myopathy and neuropathy, and associated with multiple mtDNA deletions in muscle, has also rarely been described. MPV17-related mtDNA maintenance defect, encephalohepatopathic form is characterized by: Hepatic manifestations (liver dysfunction that typically progresses to liver failure, cholestasis, hepatomegaly, and steatosis); Neurologic involvement (developmental delay, hypotonia, microcephaly, and motor and sensory peripheral neuropathy); Gastrointestinal manifestations (gastrointestinal dysmotility, feeding difficulties, and failure to thrive); and Metabolic derangements (lactic acidosis and hypoglycemia). Less frequent manifestations include renal tubulopathy, nephrocalcinosis, and hypoparathyroidism. Progressive liver disease often leads to death in infancy or early childhood. Hepatocellular carcinoma has been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338045">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376792"><div><strong>Neuronal ceroid lipofuscinosis 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376792</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850442</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The lipopigment patterns observed most often in CLN5 comprise mixed combinations of 'granular,' 'curvilinear,' and 'fingerprint' profiles. The clinical course includes progressive dementia, seizures, and progressive visual failure (Mole et al., 2005).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of CLN, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376792">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340540"><div><strong>Neuronal ceroid lipofuscinosis 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340540</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850451</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The lipopigment pattern seen most often in CLN1 is referred to as granular osmiophilic deposits (GROD). The patterns most often observed in CLN2 and CLN3 are 'curvilinear' and 'fingerprint' profiles, respectively. CLN4, CLN5, CLN6, CLN7, and CLN8 show mixed combinations of granular, curvilinear, fingerprint, and rectilinear profiles. The clinical course includes progressive dementia, seizures, and progressive visual failure (Mole et al., 2005).&#13; Zeman and Dyken (1969) referred to these conditions as the 'neuronal ceroid lipofuscinoses.' Goebel (1995) provided a comprehensive review of the NCLs and noted that they are possibly the most common group of neurodegenerative diseases in children.&#13; Mole et al. (2005) provided a detailed clinical and genetic review of the neuronal ceroid lipofuscinoses.&#13; Genetic Heterogeneity of Neuronal Ceroid Lipofuscinosis&#13; See also CLN2 (204500), caused by mutation in the TPP1 gene (607998) on chromosome 11p15; CLN3 (204200), caused by mutation in the CLN3 gene (607042) on 16p12; CLN4 (162350), caused by mutation in the DNAJC5 gene (611203) on 20q13; CLN5 (256731), caused by mutation in the CLN5 gene (608102) on 13q22; CLN6A (601780) and CLN6B (204300), both caused by mutation in the CLN6 gene (606725) on 15q21; CLN7 (610951), caused by mutation in the MFSD8 gene (611124) on 4q28; CLN8 (600143) and the Northern epilepsy variant of CLN8 (610003), both caused by mutation in the CLN8 gene (607837) on 8p23; CLN10 (610127), caused by mutation in the CTSD gene (116840) on 11p15; CLN11 (614706), caused by mutation in the GRN gene (138945) on 17q21; CLN13 (615362), caused by mutation in the CTSF gene (603539) on 11q13; and CLN14 (611726), caused by mutation in the KCTD7 gene (611725) on 7q11.&#13; CLN9 (609055) has not been molecularly characterized.&#13; A disorder that was formerly designated neuronal ceroid lipofuscinosis-12 (CLN12) is now considered to be a variable form of Kufor-Rakeb syndrome (KRS; 606693).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340540">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340586"><div><strong>Bailey-Bloch congenital myopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340586</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850625</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">STAC3 disorder is characterized by congenital myopathy, musculoskeletal involvement of the trunk and extremities, feeding difficulties, and delayed motor milestones. Most affected individuals have weakness with myopathic facies, scoliosis, kyphosis or kyphoscoliosis, and contractures. Other common findings are ptosis, abnormalities of the palate (including cleft palate), and short stature. Risk for malignant hyperthermia susceptibility and restrictive lung disease are increased. Intellect is typically normal. Originally described in individuals from the Lumbee Native American tribe (an admixture of Cheraw Indian, English, and African American ancestry) in the state of North Carolina and reported as Native American myopathy, STAC3 disorder has now been identified in numerous other populations worldwide.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340586">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338088"><div><strong>Keipert syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338088</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850627</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Keipert syndrome (KPTS) is characterized by craniofacial and digital abnormalities and variable learning difficulties. The distinctive facial appearance includes broad forehead, hypertelorism, prominent nose, wide mouth, and prominent upper lip with cupid bow configuration. Digital anomalies are also distinctive, with widening of all distal phalanges, particularly of the thumbs and great toes (Amor et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338088">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_342587"><div><strong>Myoclonic epilepsy, juvenile, susceptibility to, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342587</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850778</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Juvenile myoclonic epilepsy (EJM, JME) is a subtype of idiopathic generalized epilepsy (EIG; see 600669), affecting up to 26% of all individuals with EIG. Individuals with EJM have afebrile seizures only, with onset in adolescence of myoclonic jerks. Myoclonic jerks usually occur in the morning (Janz and Durner, 1997).&#13; Genetic Heterogeneity of Juvenile Myoclonic Seizures&#13; Susceptibility to EJM can be conferred by variation in several other genes: EJM5 (611136), by variation in the GABRA1 gene (137160) on 5q34; EJM6 (see 607682), by variation in the CACNB4 gene (601949) on 2q23; EJM8 (see 607628), by variation in the CLCN2 gene (600570) on 3q27; and EJM10 (617924), by variation in the ICK gene (612325) on chromosome 6p12.&#13; In addition, EJM loci have been identified by linkage analysis: EJM2 (see 604827) on 15q14, EJM3 (608816) on 6p21, EJM4 (611364) on 5q12-q14, and EJM9 (614280) on 2q33-q36.&#13; EJM7 (see 613060) was thought to be caused by variation in the GABRD gene (137163.0002) on 1p36, but the variant was reclassified as a polymorphism.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342587">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_342070"><div><strong>Lateral meningocele syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342070</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1851710</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NOTCH3-related lateral meningocele syndrome (LMS) is characterized by multiple lateral spinal meningoceles (protrusions of the arachnoid and dura through spinal foramina), distinctive facial features, joint hyperextensibility, hypotonia, and skeletal, cardiac, and urogenital anomalies. Neurologic sequelæ of the meningoceles depend on size and location and can include neurogenic bladder, paresthesia, back pain, and/or paraparesis. Other neurologic findings can include Chiari I malformation, syringomyelia, and rarely, hydrocephalus. Additional findings of LMS include developmental delay, mixed or conductive hearing loss, and cleft palate. Skeletal abnormalities may include scoliosis, vertebral fusion, scalloping of vertebrae, and wormian bones. Infants may demonstrate feeding difficulties with poor weight gain.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342070">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_343663"><div><strong>Ectrodactyly, ectodermal dysplasia, and cleft lip-palate syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>343663</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1851841</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An EEC syndrome characterized by autosomal dominant inheritance that has material basis in variation in the chromosome region 7q11.2-q21.3.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/343663">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_377707"><div><strong>Seizures, benign familial neonatal, 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>377707</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1852581</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">KCNQ3-related disorders include self-limited familial neonatal epilepsy (SLFNE) and self-limited familial infantile epilepsy (SLFIE), seizure disorders that occur in children who typically have normal psychomotor development. An additional KCNQ3-related neurodevelopmental disorder (NDD) with and without epilepsy has also been described. In KCNQ3-SLFNE, seizures begin in an otherwise healthy infant between age days two and eight of life and spontaneously disappear within the first year of life. Seizures are generally brief, lasting one to two minutes. Seizure types include tonic or apneic episodes and focal clonic activity, with or without autonomic changes. Motor activity may be confined to one body part, migrate to other regions, or generalize. Infants are normal between seizures and feed normally. In KCNQ3-SLFIE, seizures start in the first year of life beyond the neonatal period and disappear after age one to two years. Seizures are generally brief, lasting two minutes; they appear as daily repeated clusters. Seizure types are usually focal, but can also include generalized, causing diffuse hypertonia with jerks of the limbs, head deviation, or motor arrest with unconsciousness and cyanosis. Infants are normal between seizures and psychomotor development is usually normal. In KCNQ3-NDD, individuals present with intellectual disability with or without seizures and/or cortical visual impairment. As little clinical information on these individuals is available, the clinical presentation of KCNQ3-NDD remains to be defined.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/377707">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_339002"><div><strong>Renal coloboma syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>339002</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1852759</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PAX2-related disorder is an autosomal dominant disorder associated with renal and eye abnormalities. The disorder was originally referred to as renal coloboma syndrome and characterized by renal hypodysplasia and abnormalities of the optic nerve; with improved access to molecular testing, a wider range of phenotypes has been recognized in association with pathogenic variants in PAX2. Abnormal renal structure or function is noted in 92% of affected individuals and ophthalmologic abnormalities in 77% of affected individuals. Renal abnormalities can be clinically silent in rare individuals. In most individuals, clinically significant renal insufficiency / renal failure is reported. End-stage renal disease requiring renal transplant is not uncommon. Uric acid nephrolithiasis has been reported. Ophthalmologic abnormalities are typically described as optic nerve coloboma or dysplasia. Iris colobomas have not been reported in any individual with PAX2–related disorder. Ophthalmologic abnormalities may significantly impair vision in some individuals, while others have subtle changes only noted after detailed ophthalmologic examination. Additional clinical findings include high-frequency sensorineural hearing loss, soft skin, and ligamentous laxity. PAX2 pathogenic variants have been identified in multiple sporadic and familial cases of nonsyndromic renal disease including renal hypodysplasia and focal segmental glomerulosclerosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/339002">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_339902"><div><strong>Cornelia de Lange syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>339902</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1853099</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cornelia de Lange syndrome (CdLS) encompasses a spectrum of findings from mild to severe. Severe (classic) CdLS is characterized by distinctive facial features, growth restriction (prenatal onset; &lt;5th centile throughout life), hypertrichosis, and upper-limb reduction defects that range from subtle phalangeal abnormalities to oligodactyly (missing digits). Craniofacial features include synophrys, highly arched and/or thick eyebrows, long eyelashes, short nasal bridge with anteverted nares, small widely spaced teeth, and microcephaly. Individuals with a milder phenotype have less severe growth, cognitive, and limb involvement, but often have facial features consistent with CdLS. Across the CdLS spectrum IQ ranges from below 30 to 102 (mean: 53). Many individuals demonstrate autistic and self-destructive tendencies. Other frequent findings include cardiac septal defects, gastrointestinal dysfunction, hearing loss, myopia, and cryptorchidism or hypoplastic genitalia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/339902">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_339908"><div><strong>Noonan syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>339908</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1853120</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Noonan syndrome (NS) is characterized by characteristic facies, short stature, congenital heart defect, and developmental delay of variable degree. Other findings can include broad or webbed neck, unusual chest shape with superior pectus carinatum and inferior pectus excavatum, cryptorchidism, varied coagulation defects, lymphatic dysplasias, and ocular abnormalities. Although birth length is usually normal, final adult height approaches the lower limit of normal. Congenital heart disease occurs in 50%-80% of individuals. Pulmonary valve stenosis, often with dysplasia, is the most common heart defect and is found in 20%-50% of individuals. Hypertrophic cardiomyopathy, found in 20%-30% of individuals, may be present at birth or develop in infancy or childhood. Other structural defects include atrial and ventricular septal defects, branch pulmonary artery stenosis, and tetralogy of Fallot. Up to one fourth of affected individuals have mild intellectual disability, and language impairments in general are more common in NS than in the general population.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/339908">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_342805"><div><strong>Joubert syndrome 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342805</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1853153</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342805">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_343981"><div><strong>Osteogenesis imperfecta type 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>343981</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1853162</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Osteogenesis imperfecta is a connective tissue disorder characterized by bone fragility and low bone mass. OI type VII is an autosomal recessive form of severe or lethal OI (summary by Barnes et al., 2006).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/343981">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_342889"><div><strong>Intellectual disability, microcephaly, growth retardation, joint contractures, and facial dysmorphism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342889</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1853480</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342889">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_342897"><div><strong>Intellectual disability, short stature, facial anomalies, and joint dislocations</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342897</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1853507</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder with short stature, facial anomalies, and speech defects (IDDSFAS) is an autosomal recessive disorder characterized by stature below the 1st centile, mild facial dysmorphism comprising mainly large bulbous nose and microretrognathia, and developmental delay with varying degrees of intellectual disability (Ansar et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342897">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340138"><div><strong>Cerebrooculonasal syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340138</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854108</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A multisystem malformation syndrome that has been reported in about 10 patients. The clinical features include bilateral anophthalmia, abnormal nares, central nervous system anomalies, and neurodevelopmental delay. Additional features include brachycephaly and other facial anomalies. Non-facial anomalies have also been reported: postaxial polydactyly, genital hypoplasia. All cases reported so far have been sporadic, suggesting that the syndrome may be due to a new dominant mutation.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340138">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344245"><div><strong>Leber congenital amaurosis 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344245</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854260</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Leber congenital amaurosis comprises a group of early-onset childhood retinal dystrophies characterized by vision loss, nystagmus, and severe retinal dysfunction. Patients usually present at birth with profound vision loss and pendular nystagmus. Electroretinogram (ERG) responses are usually nonrecordable. Other clinical findings may include high hypermetropia, photodysphoria, oculodigital sign, keratoconus, cataracts, and a variable appearance to the fundus (summary by Chung and Traboulsi, 2009).&#13; For a general description and a discussion of genetic heterogeneity of LCA, see 204000.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344245">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344273"><div><strong>Nemaline myopathy 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344273</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854380</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive severe infantile nemaline myopathy-5A (NEM5A) is a skeletal muscle disorder characterized by symptom onset soon after birth or in early infancy. Affected infants show axial hypotonia, stiffness, rigid spine with progressive kyphosis, pectus deformities, and contractures or limited movement of the large joints. Some patients show transient tremors. There is muscle atrophy and poor gross motor development. Respiratory insufficiency develops in the first years of life, often leading to death. Muscle biopsy shows nemaline rods (Johnston et al., 2000; Geraud et al., 2021).&#13; For a discussion of genetic heterogeneity of nemaline myopathy, see NEM2 (256030).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344273">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_381416"><div><strong>Macrocephaly-autism syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>381416</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854416</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Macrocephaly/autism syndrome is an autosomal dominant disorder characterized by increased head circumference, abnormal facial features, and delayed psychomotor development resulting in autistic behavior or mental retardation (Herman et al., 2007). Some patients may have a primary immunodeficiency disorder with recurrent infections associated with variably abnormal T- and B-cell function (Tsujita et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/381416">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344288"><div><strong>Tuberous sclerosis 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344288</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854465</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tuberous sclerosis complex (TSC) involves abnormalities of the skin (hypomelanotic macules, confetti skin lesions, facial angiofibromas, shagreen patches, fibrous cephalic plaques, ungual fibromas); brain (subependymal nodules, cortical tubers, and subependymal giant cell astrocytomas [SEGAs], seizures, TSC-associated neuropsychiatric disorder [TAND]); kidneys (benign renal angiomyolipomas, epithelial cysts, oncocytoma, renal cell carcinoma); heart (rhabdomyomas, arrhythmias); and lungs (lymphangioleiomyomatosis [LAM], multifocal micronodular pneumonocyte hyperplasia). Central nervous system-related problems (including TAND) are the leading cause of morbidity, whereas kidney disease is the leading cause of mortality.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344288">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344290"><div><strong>Noonan syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344290</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854469</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Noonan syndrome (NS) is characterized by characteristic facies, short stature, congenital heart defect, and developmental delay of variable degree. Other findings can include broad or webbed neck, unusual chest shape with superior pectus carinatum and inferior pectus excavatum, cryptorchidism, varied coagulation defects, lymphatic dysplasias, and ocular abnormalities. Although birth length is usually normal, final adult height approaches the lower limit of normal. Congenital heart disease occurs in 50%-80% of individuals. Pulmonary valve stenosis, often with dysplasia, is the most common heart defect and is found in 20%-50% of individuals. Hypertrophic cardiomyopathy, found in 20%-30% of individuals, may be present at birth or develop in infancy or childhood. Other structural defects include atrial and ventricular septal defects, branch pulmonary artery stenosis, and tetralogy of Fallot. Up to one fourth of affected individuals have mild intellectual disability, and language impairments in general are more common in NS than in the general population.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344290">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344297"><div><strong>Spinocerebellar ataxia type 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344297</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854488</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spinocerebellar ataxia type 13 (SCA13) is a phenotypic spectrum that includes both non-progressive infantile-onset ataxia and progressive childhood-onset and adult-onset cerebellar ataxia. Three phenotypes are seen: Cerebellar hypoplasia with non-progressive infantile-onset limb, truncal, and gait ataxia with mild-to-moderate intellectual disability and occasionally seizures and/or psychiatric manifestations. Cognition and motor skills improve over time. Childhood-onset slowly progressive cerebellar atrophy with slowly progressive cerebellar ataxia and dysarthria, delayed motor milestones, and mild-to-moderate intellectual disability. Adult-onset progressive cerebellar atrophy with progressive ataxia and spasticity.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344297">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340266"><div><strong>Wiedemann-Steiner syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340266</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854630</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Wiedemann-Steiner syndrome (WSS) is characterized by developmental delay, intellectual disability, and characteristic facial features, with or without additional congenital anomalies. The facial features include thick eyebrows with lateral flare, vertically narrow and downslanted palpebral fissures, widely spaced eyes, long eyelashes, wide nasal bridge, broad nasal tip, thin vermilion of the upper lip, and thick scalp hair. About 60% of affected individuals have hypertrichosis cubiti ("hairy elbows"), which was once thought to be pathognomic for the syndrome, with a majority having hypertrichosis of other body parts. Other clinical features include feeding difficulties, prenatal and postnatal growth restriction, epilepsy, ophthalmologic anomalies, congenital heart defects, hand anomalies (such as brachydactyly and clinodactyly), hypotonia, vertebral anomalies (especially fusion anomalies of the cervical spine), renal and uterine anomalies, immune dysfunction, brain malformations, and dental anomalies.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340266">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340743"><div><strong>GNPTG-mucolipidosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340743</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854896</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mucolipidosis III gamma (ML III?) is a slowly progressive inborn error of metabolism mainly affecting skeletal, joint, and connective tissues. Clinical onset is in early childhood; the progressive course results in severe functional impairment and significant morbidity from chronic pain. Cardiorespiratory complications (restrictive lung disease from thoracic involvement, and thickening and insufficiency of the mitral and aortic valves) are rarely clinically significant. A few (probably &lt;10%) affected individuals display mild cognitive impairment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340743">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_381530"><div><strong>Sulfite oxidase deficiency due to molybdenum cofactor deficiency type A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>381530</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854988</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Molybdenum cofactor deficiency (MoCD) represents a spectrum, with some individuals experiencing significant signs and symptoms in the neonatal period and early infancy (termed early-onset or severe MoCD) and others developing signs and symptoms in childhood or adulthood (termed late-onset or mild MoCD). Individuals with early-onset MoCD typically present in the first days of life with severe encephalopathy, including refractory seizures, opisthotonos, axial and appendicular hypotonia, feeding difficulties, and apnea. Head imaging may demonstrate loss of gray and white matter differentiation, gyral swelling, sulci injury (typically assessed by evaluating the depth of focal lesional injury within the sulci), diffusely elevated T2-weighted signal, and panlobar diffusion restriction throughout the forebrain and midbrain with relative sparring of the brain stem. Prognosis for early-onset MoCD is poor, with about 75% succumbing in infancy to secondary complications of their neurologic disability (i.e., pneumonia). Late-onset MoCD is typically characterized by milder symptoms, such as acute neurologic decompensation in the setting of infection. Episodes vary in nature but commonly consist of altered mental status, dystonia, choreoathetosis, ataxia, nystagmus, and fluctuating hypotonia and hypertonia. These features may improve after resolution of the inciting infection or progress in a gradual or stochastic manner over the lifetime. Brain imaging may be normal or may demonstrate T2-weighted hyperintense or cystic lesions in the globus pallidus, thinning of the corpus callosum, and cerebellar atrophy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/381530">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_381554"><div><strong>Microcephalus cardiomyopathy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>381554</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855080</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome with characteristics of severe intellectual deficit, microcephaly and dilated cardiomyopathy. Hand and foot anomalies have also been reported. The syndrome has been described in three individuals. Transmission is autosomal recessive.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/381554">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344415"><div><strong>Microcephaly 1, primary, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344415</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855081</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Primary microcephaly refers to the clinical finding of a head circumference more than than 3 standard deviations (SD) below the age- and sex-related mean, present at birth. Primary microcephaly is a static developmental anomaly, distinguished from secondary microcephaly, which refers to a progressive neurodegenerative condition. Microcephaly is a disorder of fetal brain growth; individuals with microcephaly have small brains and almost always have mental retardation, although rare individuals with mild microcephaly (-3 SD) and normal intelligence have been reported. Additional clinical features may include short stature or mild seizures. MCPH is associated with a simplification of the cerebral cortical gyral pattern and a slight reduction in the volume of the white matter, consistent with the small size of the brain, but the architecture of the brain in general is normal, with no evidence of a neuronal migration defect (review by Woods et al., 2005).&#13; Most cases of primary microcephaly show an autosomal recessive mode of inheritance. Because MCPH directly affects neurogenesis, or neurogenic mitosis, rather than growth of the skull, some prefer the term 'micrencephaly' (Hofman, 1984).&#13; MCPH1 in particular is associated with premature chromosome condensation in cell studies (Darvish et al., 2010).&#13; Genetic Heterogeneity of Primary Microcephaly&#13; Primary microcephaly is a genetically heterogeneous disorder. See MCPH2 (604317), caused by mutation in the WDR62 gene (613583) on chromosome 19q13; MCPH3 (604804), caused by mutation in the CDK5RAP2 gene (608201) on 9q33; MCPH4 (604321), caused by mutation in the CASC5 gene (609173) on 15q15; MCPH5 (608716), caused by mutation in the ASPM gene (605481) on 1q31; MCPH6 (608393), caused by mutation in the CENPJ gene (609279) on 13q12; MCPH7 (612703), caused by mutation in the STIL gene (181590) on 1p33; MCPH8 (614673), caused by mutation in the CEP135 gene (611423) on 4q12; MCPH9 (614852), caused by mutation in the CEP152 gene (613529) on 15q21; MCPH10 (615095), caused by mutation in the ZNF335 gene (610827) on 20q13; MCPH11 (615414), caused by mutation in the PHC1 gene (602978) on 12p13; MCPH12 (616080), caused by mutation in the CDK6 gene (603368) on 7q21; MCPH13 (616051), caused by mutation in the CENPE gene (117143) on 4q24; MCPH14 (616402), caused by mutation in the SASS6 gene (609321) on 1p21; MCPH15 (616486), caused by mutation in the MFSD2A gene (614397) on 1p34; MCPH16 (616681), caused by mutation in the ANKLE2 gene (616062) on 12q24; MCPH17 (617090), caused by mutation in the CIT gene (605629) on 12q24; MCPH18 (617520), caused by mutation in the WDFY3 gene (617485) on 4q21; MCPH19 (617800), caused by mutation in the COPB2 gene (606990) on 3q23; MCPH20 (617914), caused by mutation in the KIF14 gene (611279) on 1q31; MCPH21 (617983), caused by mutation in the NCAPD2 gene (615638) on 12p13; MCPH22 (617984), caused by mutation in the NCAPD3 gene (609276) on 11q25; MCPH23 (617985), caused by mutation in the NCAPH gene (602332) on 2q11; MCPH24 (618179), caused by mutation in the NUP37 gene (609264) on 12q23; MCPH25 (618351), caused by mutation in the MAP11 gene (618350) on 7q22; MCPH26 (619179), caused by mutation in the LMNB1 gene (150340) on 5q23; MCPH27 (619180), caused by mutation in the LMNB2 gene (150341) on 19p13; MCPH28 (619453), caused by mutation in the RRP7A gene (619449) on 22q13; MCPH29 (620047), caused by mutation in the PDCD6IP gene (608074) on 3p22; and MCPH30 (620183), caused by mutation in the BUB1 gene (602452) on 2q13.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344415">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344426"><div><strong>Methylcobalamin deficiency type cblG</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344426</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855128</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Disorders of intracellular cobalamin metabolism have a variable phenotype and age of onset that are influenced by the severity and location within the pathway of the defect. The prototype and best understood phenotype is cblC; it is also the most common of these disorders. The age of initial presentation of cblC spans a wide range: In utero with fetal presentation of nonimmune hydrops, cardiomyopathy, and intrauterine growth restriction. Newborns, who can have microcephaly, poor feeding, and encephalopathy. Infants, who can have poor feeding and slow growth, neurologic abnormality, and, rarely, hemolytic uremic syndrome (HUS). Toddlers, who can have poor growth, progressive microcephaly, cytopenias (including megaloblastic anemia), global developmental delay, encephalopathy, and neurologic signs such as hypotonia and seizures. Adolescents and adults, who can have neuropsychiatric symptoms, progressive cognitive decline, thromboembolic complications, and/or subacute combined degeneration of the spinal cord.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344426">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_381579"><div><strong>Metaphyseal chondrodysplasia-retinitis pigmentosa syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>381579</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855188</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Retinitis pigmentosa with or without skeletal anomalies (RPSKA) is characterized by retinal degeneration, brachydactyly, craniofacial abnormalities, short stature, and neurologic defects. Night blindness occurs around 10 years of age, followed by restriction of visual fields. Brachydactyly affects primarily the distal phalanges. Craniofacial abnormalities include frontal bossing, downslanting palpebral fissures, large columella, hypoplastic nares, micrognathia, and large low-set ears (summary by Xu et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/381579">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_383668"><div><strong>Maple syrup urine disease type 1A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>383668</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855369</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Maple syrup urine disease (MSUD) is categorized as classic (severe), intermediate, or intermittent. Neonates with classic MSUD are born asymptomatic but without treatment follow a predictable course: 12–24 hours. Elevated concentrations of branched-chain amino acids (BCAAs; leucine, isoleucine, and valine) and alloisoleucine, as well as a generalized disturbance of amino acid concentration ratios, are present in blood and the maple syrup odor can be detected in cerumen; Two to three days. Early and nonspecific signs of metabolic intoxication (i.e., irritability, hypersomnolence, anorexia) are accompanied by the presence of branched-chain alpha-ketoacids, acetoacetate, and beta-hydroxybutyrate in urine; Four to six days. Worsening encephalopathy manifests as lethargy, apnea, opisthotonos, and reflexive "fencing" or "bicycling" movements as the sweet maple syrup odor becomes apparent in urine; Seven to ten days. Severe intoxication culminates in critical cerebral edema, coma, and central respiratory failure. Individuals with intermediate MSUD have partial branched-chain alpha-ketoacid dehydrogenase deficiency that manifests only intermittently or responds to dietary thiamine therapy; these individuals can experience severe metabolic intoxication and encephalopathy in the face of sufficient catabolic stress. In the era of newborn screening (NBS), the prompt initiation of treatment of asymptomatic infants detected by NBS means that most individuals who would have developed neonatal manifestations of MSUD remain asymptomatic with continued treatment adherence.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/383668">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340888"><div><strong>Intellectual disability-spasticity-ectrodactyly syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340888</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855501</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual disability-spasticity-ectrodactyly syndrome is a rare intellectual disability syndrome characterized by severe intellectual disability, spastic paraplegia (with wasting of the lower limbs) and distal transverse defects of the limbs (e.g. ectrodactyly, syndactyly, clinodactyly of the hands and/or feet).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340888">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_383698"><div><strong>Leukomelanoderma-infantilism-intellectual disability-hypodontia-hypotrichosis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>383698</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855504</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Leukomelanoderma-infantilism-intellectual disability-hypodontia-hypotrichosis syndrome is a rare ectodermal dysplasia syndrome characterized by congenital generalized melanoleukoderma, hypodontia and hypotrichosis associated with infantilism, intellectual disability and growth delay. There have been no further descriptions in the literature since 1961.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/383698">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_343381"><div><strong>Lambert syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>343381</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855551</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A very rare syndrome described in four siblings of one French family and with characteristics of branchial dysplasia (malar hypoplasia, macrostomia, preauricular tags and meatal atresia), club feet, inguinal hernia and cholestasis due to paucity of interlobular bile ducts and intellectual deficit.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/343381">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_343383"><div><strong>Pyruvate dehydrogenase E3-binding protein deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>343383</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855553</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pyruvate dehydrogenase deficiency is characterized by the buildup of a chemical called lactic acid in the body and a variety of neurological problems. Signs and symptoms of this condition usually first appear shortly after birth, and they can vary widely among affected individuals. The most common feature is a potentially life-threatening buildup of lactic acid (lactic acidosis), which can cause nausea, vomiting, severe breathing problems, and an abnormal heartbeat. People with pyruvate dehydrogenase deficiency usually have neurological problems as well. Most have delayed development of mental abilities and motor skills such as sitting and walking. Other neurological problems can include intellectual disability, seizures, weak muscle tone (hypotonia), poor coordination, and difficulty walking. Some affected individuals have abnormal brain structures, such as underdevelopment of the tissue connecting the left and right halves of the brain (corpus callosum), wasting away (atrophy) of the exterior part of the brain known as the cerebral cortex, or patches of damaged tissue (lesions) on some parts of the brain. Because of the severe health effects, many individuals with pyruvate dehydrogenase deficiency do not survive past childhood, although some may live into adolescence or adulthood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/343383">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340943"><div><strong>Baraitser-Winter syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340943</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855722</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Baraitser-Winter cerebrofrontofacial (BWCFF) syndrome is a multiple congenital anomaly syndrome characterized by typical craniofacial features and intellectual disability. Many (but not all) affected individuals have pachygyria that is predominantly frontal, wasting of the shoulder girdle muscles, and sensory impairment due to iris or retinal coloboma and/or sensorineural deafness. Intellectual disability, which is common but variable, is related to the severity of the brain malformations. Seizures, congenital heart defects, renal malformations, and gastrointestinal dysfunction are also common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340943">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340949"><div><strong>Indolylacroyl glycinuria with intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340949</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855738</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340949">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344563"><div><strong>Channelopathy-associated congenital insensitivity to pain, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344563</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855739</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary sensory and autonomic neuropathy type II (HSAN2) is characterized by progressively reduced sensation to pain, temperature, and touch. Onset can be at birth and is often before puberty. The sensory deficit is predominantly distal with the lower limbs more severely affected than the upper limbs. Over time sensory function becomes severely reduced. Unnoticed injuries and neuropathic skin promote ulcerations and infections that result in spontaneous amputation of digits or the need for surgical amputation. Osteomyelitis is common. Painless fractures can complicate the disease. Autonomic disturbances are variable and can include hyperhidrosis, tonic pupils, and urinary incontinence in those with more advanced disease.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344563">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344576"><div><strong>Ichthyosis, split hairs, and amino aciduria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344576</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855786</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344576">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340966"><div><strong>Ichthyosis-intellectual disability-dwarfism-renal impairment syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340966</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855787</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ichthyosis-intellectual disability-dwarfism-renal impairment syndrome is characterised by nonbullous congenital ichthyosis, intellectual deficit, dwarfism and renal impairment. It has been described in four members of one Iranian family. Transmission is autosomal recessive.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340966">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_344577"><div><strong>Ichthyosis-alopecia-eclabion-ectropion-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344577</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855788</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An ectodermal dysplasia syndrome characterized by severe generalized lamellar icthyosis at birth with alopecia, eclabium, ectropion and intellectual disability. Although similar to Sjogren-Larsson syndrome, this syndrome lacks the presence of neurologic or macular changes. There have been no further descriptions in the literature since 1987.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344577">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340984"><div><strong>Hypoparathyroidism-retardation-dysmorphism syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340984</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855840</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypoparathyroidism-retardation-dysmorphism syndrome (HRDS) is an autosomal recessive multisystem disorder characterized by intrauterine and postnatal growth retardation, infantile-onset hypoparathyroidism that can result in severe hypocalcemic seizures, dysmorphic facial features, and developmental delay (summary by Padidela et al., 2009 and Ratbi et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340984">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_343428"><div><strong>Bartter disease type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>343428</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855849</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bartter syndrome refers to a group of disorders that are unified by autosomal recessive transmission of impaired salt reabsorption in the thick ascending loop of Henle with pronounced salt wasting, hypokalemic metabolic alkalosis, and hypercalciuria. Clinical disease results from defective renal reabsorption of sodium chloride in the thick ascending limb (TAL) of the Henle loop, where 30% of filtered salt is normally reabsorbed (Simon et al., 1997).&#13; Patients with antenatal forms of Bartter syndrome typically present with premature birth associated with polyhydramnios and low birth weight and may develop life-threatening dehydration in the neonatal period. Patients with classic Bartter syndrome (see BARTS3, 607364) present later in life and may be sporadically asymptomatic or mildly symptomatic (summary by Simon et al., 1996 and Fremont and Chan, 2012).&#13; For a discussion of genetic heterogeneity of Bartter syndrome, see 607364.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/343428">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_383787"><div><strong>Hypogonadism with low-grade mental deficiency and microcephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>383787</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855858</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/383787">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_383794"><div><strong>Hyperuricemia, infantile, with abnormal behavior and normal hypoxanthine guanine phosphoribosyltransferase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>383794</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855884</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/383794">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341010"><div><strong>Hyperlysinemia due to defect in lysine transport into mitochondria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341010</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855927</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341010">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_343450"><div><strong>Seizures-intellectual disability due to hydroxylysinuria syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>343450</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855986</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">The presence of an elevated amount of 5-hydroxylysine in the urine. This compound is a hydroxylated derivative of the amino acid lysine that is present in certain collagens.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/343450">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341029"><div><strong>L-2-hydroxyglutaric aciduria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341029</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1855995</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">2-hydroxyglutaric aciduria is a condition that causes progressive damage to the brain. The major types of this disorder are called D-2-hydroxyglutaric aciduria (D-2-HGA), L-2-hydroxyglutaric aciduria (L-2-HGA), and combined D,L-2-hydroxyglutaric aciduria (D,L-2-HGA).\n\nThe main features of D-2-HGA are delayed development, seizures, weak muscle tone (hypotonia), and abnormalities in the largest part of the brain (the cerebrum), which controls many important functions such as muscle movement, speech, vision, thinking, emotion, and memory. Researchers have described two subtypes of D-2-HGA, type I and type II. The two subtypes are distinguished by their genetic cause and pattern of inheritance, although they also have some differences in signs and symptoms. Type II tends to begin earlier and often causes more severe health problems than type I. Type II may also be associated with a weakened and enlarged heart (cardiomyopathy), a feature that is typically not found with type I.\n\nL-2-HGA particularly affects a region of the brain called the cerebellum, which is involved in coordinating movements. As a result, many affected individuals have problems with balance and muscle coordination (ataxia). Additional features of L-2-HGA can include delayed development, seizures, speech difficulties, and an unusually large head (macrocephaly). Typically, signs and symptoms of this disorder begin during infancy or early childhood. The disorder worsens over time, usually leading to severe disability by early adulthood.\n\nCombined D,L-2-HGA causes severe brain abnormalities that become apparent in early infancy. Affected infants have severe seizures, weak muscle tone (hypotonia), and breathing and feeding problems. They usually survive only into infancy or early childhood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341029">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341089"><div><strong>Hall-Riggs syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341089</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1856198</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A very rare syndrome consisting of microcephaly with facial dysmorphism, spondylometaphyseal dysplasia and severe intellectual deficit. Eight cases have been reported in the literature in two unrelated families. Dysmorphic features include hypertelorism, depressed nasal bridge, and large nose with a large nasal tip, anteverted nostrils and wide mouth with thick lips. Affected patients do not achieve language ability. The condition is probably hereditary, and transmitted as an autosomal recessive trait.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341089">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_383868"><div><strong>Hair defect with photosensitivity and intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>383868</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1856241</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome with the association of stubby, coarse, sparse and fragile hair, eyebrows and eyelashes with photosensitivity and nonprogressive intellectual deficit, without a demonstrable metabolic aberration. It has been described in three sisters born to consanguineous parents.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/383868">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_343541"><div><strong>Glutathione synthetase deficiency without 5-oxoprolinuria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>343541</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1856399</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Two forms of glutathione synthetase deficiency have been described: a mild form, here referred to as congenital nonspherocytic hemolytic anemia-6 (CNSHA6), and a more severe form causing 5-oxoprolinuria with secondary neurologic involvement (266130).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/343541">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341637"><div><strong>Autosomal recessive faciodigitogenital syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341637</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1856871</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A very rare syndrome including short stature, facial dysmorphism, hand abnormalities and shawl scrotum. It has been observed in 16 subjects from five distantly related sibships of a large Kuwaiti Bedouin tribe. The affected patients had no intellectual deficit. Transmitted as an autosomal recessive trait.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341637">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_384017"><div><strong>Epilepsy-telangiectasia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>384017</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1856929</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare, genetic, epilepsy syndrome characterized by epilepsy, palpebral conjunctival telangiectasias, borderline to moderate intellectual disability, diminished serum IgA levels, shortened fifth fingers and dysmorphic facial features (including frontal hirsutism, synophrys, anteverted nostrils, prominent ears, long philtrum, irregular teeth implantation, micrognathia). No new cases have been described in the literature since 1978.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/384017">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347333"><div><strong>Epilepsy, photogenic, with spastic diplegia and intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347333</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1856931</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347333">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341670"><div><strong>Encephalomalacia, multilocular</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341670</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1856991</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341670">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341705"><div><strong>Dyskeratosis congenita, autosomal recessive 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341705</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857144</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dyskeratosis congenita and related telomere biology disorders (DC/TBD) are caused by impaired telomere maintenance resulting in short or very short telomeres. The phenotypic spectrum of telomere biology disorders is broad and includes individuals with classic dyskeratosis congenita (DC) as well as those with very short telomeres and an isolated physical finding. Classic DC is characterized by a triad of dysplastic nails, lacy reticular pigmentation of the upper chest and/or neck, and oral leukoplakia, although this may not be present in all individuals. People with DC/TBD are at increased risk for progressive bone marrow failure (BMF), myelodysplastic syndrome or acute myelogenous leukemia, solid tumors (usually squamous cell carcinoma of the head/neck or anogenital cancer), and pulmonary fibrosis. Other findings can include eye abnormalities (epiphora, blepharitis, sparse eyelashes, ectropion, entropion, trichiasis), taurodontism, liver disease, gastrointestinal telangiectasias, and avascular necrosis of the hips or shoulders. Although most persons with DC/TBD have normal psychomotor development and normal neurologic function, significant developmental delay is present in both forms; additional findings include cerebellar hypoplasia (Hoyeraal Hreidarsson syndrome) and bilateral exudative retinopathy and intracranial calcifications (Revesz syndrome and Coats plus syndrome). Onset and progression of manifestations of DC/TBD vary: at the mild end of the spectrum are those who have only minimal physical findings with normal bone marrow function, and at the severe end are those who have the diagnostic triad and early-onset BMF.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341705">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347385"><div><strong>Dysautonomia-like disorder</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347385</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857153</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347385">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_387764"><div><strong>Dwarfism, low-birth-weight type, with unresponsiveness to growth hormone</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>387764</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857197</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/387764">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_341734"><div><strong>Rhizomelic chondrodysplasia punctata type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341734</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857242</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rhizomelic chondrodysplasia punctata (RCDP) is a peroxisomal disorder characterized by disproportionately short stature primarily affecting the proximal parts of the extremities, a typical facial appearance including a broad nasal bridge, epicanthus, high-arched palate, dysplastic external ears, and micrognathia, congenital contractures, characteristic ocular involvement, dwarfism, and severe mental retardation with spasticity. Biochemically, plasmalogen synthesis and phytanic acid alpha-oxidation are defective. Most patients die in the first decade of life. RCDP1 (215100) is the most frequent form of RCDP (summary by Wanders and Waterham, 2005). Whereas RCDP1 is a peroxisomal biogenesis disorder (PBD), RCDP2 is classified as a single peroxisome enzyme deficiency (Waterham and Ebberink, 2012).&#13; For a discussion of genetic heterogeneity of rhizomelic chondrodysplasia punctata, see 215100.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341734">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_387782"><div><strong>Dicarboxylic aminoaciduria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>387782</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857253</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dicarboxylic aminoaciduria (DCBXA) is characterized by a striking excretion of urinary glutamate and aspartate, resulting from the incomplete reabsorption of anionic amino acids from the glomerular filtrate in the kidney. Patients may have impaired intellectual development (summary by Bailey et al., 2011).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/387782">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_387794"><div><strong>Dermatoleukodystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>387794</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857314</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">This syndrome is characterized by the association of a progressive leukodystrophy marked by generalized mental and motor impairment with the presence of thickened and wrinkled skin. It has been described in a Japanese brother and sister born to healthy parents. Both patients died in early childhood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/387794">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347429"><div><strong>Conductive deafness-malformed external ear syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347429</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857341</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A very rare, syndromic genetic deafness characterized by mild to moderate conductive hearing loss, dysmorphic pinnae and lip pits or dimples. The pinnae are usually small, cup-shaped, with helix folded forward, and hearing loss is associated with malformed ossicles and displacement of the external auditory canal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347429">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_387799"><div><strong>Deafness, congenital, with total albinism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>387799</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857343</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/387799">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_346587"><div><strong>Cysteine Peptiduria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>346587</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857438</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/346587">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_387821"><div><strong>Cutis verticis gyrata and intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>387821</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857444</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/387821">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_387829"><div><strong>Craniosynostosis-intellectual disability-clefting syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>387829</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857472</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A recessive syndrome characterized by craniosynostosis, intellectual disability, seizures, choroidal coloboma, dysplastic kidneys, bat ears, cleft lip and palate, and beaked nose.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/387829">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347473"><div><strong>Craniofacial dyssynostosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347473</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857511</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare cranial malformation syndrome characterized by the premature closure of both lambdoid sutures and the posterior sagittal suture, resulting in abnormal skull contour (frontal bossing, anterior turricephaly with mild brachycephaly, biparietal narrowing, occipital concavity) and dysmorphic facial features (low-set ears, midfacial hypoplasia). Short stature, developmental delay, epilepsy, and oculomotor dyspraxia have also been reported. Associated anomalies include enlargement of the cerebral ventricles, agenesis of the corpus callosum, Arnold-Chiari malformation type I, venous anomalies of skull, and hydrocephalus.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347473">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_387859"><div><strong>Convulsive disorder, familial, with prenatal or early onset</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>387859</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857575</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/387859">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347545"><div><strong>Joubert syndrome 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347545</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857780</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347545">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347610"><div><strong>Bardet-Biedl syndrome 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347610</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1858054</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bardet-Biedl syndrome-6 (BBS6) is an autosomal recessive disorder with the cardinal features of postaxial polydactyly, retinitis pigmentosa, kidney defects, obesity, and mental retardation (Slavotinek et al., 2000). Zaghloul and Katsanis (2009) estimated that mutations in the MKKS gene account for 5.8% of the total BBS mutational load.&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347610">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_346753"><div><strong>Craniosynostosis 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>346753</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1858160</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Craniosynostosis is a primary abnormality of skull growth involving premature fusion of the cranial sutures such that the growth velocity of the skull often cannot match that of the developing brain. This produces skull deformity and, in some cases, raises intracranial pressure, which must be treated promptly to avoid permanent neurodevelopmental disability (summary by Fitzpatrick, 2013).&#13; For a discussion of genetic heterogeneity of craniosynostosis, see CRS1 (123100).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/346753">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_388073"><div><strong>Hereditary spastic paraplegia 11</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>388073</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1858479</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia 11 (SPG11) is characterized by progressive spasticity and weakness of the lower limbs frequently associated with the following: mild intellectual disability with learning difficulties in childhood and/or progressive cognitive decline; peripheral neuropathy; pseudobulbar involvement; and increased reflexes in the upper limbs. Less frequent findings include: cerebellar signs (ataxia, nystagmus, saccadic pursuit); retinal degeneration; pes cavus; scoliosis; and parkinsonism with characteristic brain MRI features that include thinning of the corpus callosum. Onset occurs mainly during infancy or adolescence (range: age 1-31 years) and in rare cases as late as age 60 years. Most affected individuals become wheelchair bound one or two decades after disease onset.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/388073">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347655"><div><strong>Microcephaly 4, primary, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347655</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1858516</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Primary microcephaly (MCPH) is a clinical diagnosis made when an individual has a head circumference more than 3 standard deviations below the age- and sex-matched population mean and mental retardation, with no other associated malformations and with no apparent etiology. Most cases of primary microcephaly show an autosomal recessive mode of inheritance (summary by Woods et al., 2005).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of primary microcephaly, see MCPH1 (251200).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347655">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_346929"><div><strong>Microcephaly 2, primary, autosomal recessive, with or without cortical malformations</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>346929</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1858535</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">In WDR62 primary microcephaly (WDR62-MCPH), microcephaly (occipitofrontal circumference [OFC] =2 standard deviations below the mean) is usually present at birth, but in some instances becomes evident later in the first year of life. Growth is otherwise normal. Except for brain malformations in most affected individuals, no other congenital malformations are observed. Central nervous system involvement can include delayed motor development, mild-to-severe intellectual disability (ID), behavior problems, epilepsy, spasticity, and ataxia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/346929">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347661"><div><strong>Blepharophimosis - intellectual disability syndrome, Verloes type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347661</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1858538</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Blepharophimosis-intellectual disability syndrome, Verloes type is a rare, genetic multiple congenital anomalies/dysmorphic syndrome characterized by congenital microcephaly, severe epilepsy with hypsarrhythmia, adducted thumbs, abnormal genitalia, and normal thyroid function. Hypotonia, moderate to severe psychomotor delay, and characteristic facial dysmorphism (including round face with prominent cheeks, blepharophimosis, large, bulbous nose with wide alae nasi, posteriorly rotated ears with dysplastic conchae, narrow mouth, cleft palate, and mild micrognathia) are additional characteristic features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347661">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347666"><div><strong>Ectrodactyly, ectodermal dysplasia, and cleft lip-palate syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347666</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1858562</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The TP63-related disorders comprise six overlapping phenotypes: Ankyloblepharon-ectodermal defects-cleft lip/palate (AEC) syndrome (which includes Rapp-Hodgkin syndrome). Acro-dermo-ungual-lacrimal-tooth (ADULT) syndrome. Ectrodactyly, ectodermal dysplasia, cleft lip/palate syndrome 3 (EEC3). Limb-mammary syndrome. Split-hand/foot malformation type 4 (SHFM4). Isolated cleft lip/cleft palate (orofacial cleft 8). Individuals typically have varying combinations of ectodermal dysplasia (hypohidrosis, nail dysplasia, sparse hair, tooth abnormalities), cleft lip/palate, split-hand/foot malformation/syndactyly, lacrimal duct obstruction, hypopigmentation, hypoplastic breasts and/or nipples, and hypospadias. Findings associated with a single phenotype include ankyloblepharon filiforme adnatum (tissue strands that completely or partially fuse the upper and lower eyelids), skin erosions especially on the scalp associated with areas of scarring, and alopecia, trismus, and excessive freckling.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347666">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_346973"><div><strong>Congenital cataracts-facial dysmorphism-neuropathy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>346973</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1858726</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">CTDP1-related congenital cataracts, facial dysmorphism, and neuropathy (CTDP1-CCFDN) is characterized by abnormalities of the eye (bilateral congenital cataracts, microcornea, microphthalmia, micropupils), mildly dysmorphic facial features apparent in late childhood, and a hypo-/demyelinating, symmetric, distal peripheral neuropathy. The neuropathy is predominantly motor at the onset and results in delays in early motor development, progressing to severe disability by the third decade of life. Secondary foot deformities and scoliosis are common. Sensory neuropathy develops after age ten years. Most affected individuals have a mild nonprogressive intellectual deficit and cerebellar involvement including ataxia, nystagmus, intention tremor, and dysmetria. All have short stature and most have subnormal weight. Adults have hypogonadotropic hypogonadism. Parainfectious rhabdomyolysis (profound muscle weakness, myoglobinuria, and excessively elevated serum concentration of creatine kinase usually following a viral infection) is a potentially life-threatening complication. To date all affected individuals and carriers identified have been from the Romani population.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/346973">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347072"><div><strong>Rhizomelic chondrodysplasia punctata type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347072</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859133</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rhizomelic chondrodysplasia punctata type 1 (RCDP1), a peroxisome biogenesis disorder (PBD) has a classic (severe) form and a nonclassic (mild) form. Classic (severe) RCDP1 is characterized by proximal shortening of the humerus (rhizomelia) and to a lesser degree the femur, punctate calcifications in cartilage with epiphyseal and metaphyseal abnormalities (chondrodysplasia punctata, or CDP), coronal clefts of the vertebral bodies, and cataracts that are usually present at birth or appear in the first few months of life. Birth weight, length, and head circumference are often at the lower range of normal; postnatal growth deficiency is profound. Intellectual disability is severe, and the majority of children develop seizures. Most affected children do not survive the first decade of life; a proportion die in the neonatal period. Nonclassic (mild) RCDP1 is characterized by congenital or childhood cataracts, CDP or infrequently, chondrodysplasia manifesting only as mild epiphyseal changes, variable rhizomelia, and milder intellectual disability and growth restriction than classic RCDP1.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347072">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347092"><div><strong>Griscelli syndrome type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347092</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859194</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Griscelli syndrome type 1 (GS1) is a rare autosomal recessive disorder that results in pigmentary dilution of the skin and hair, the presence of large clumps of pigment in hair shafts, and an accumulation of melanosomes in melanocytes. In addition to the characteristic silvery-gray appearance of hair and pigmentary defects of skin, GS1 is characterized by primary neurologic deficits that usually are apparent in early infancy and include hypotonia, developmental delay, intellectual disability, and seizures. Immune impairment is not present (summary by Abd Elmaksoud et al., 2020).&#13; Bahadoran et al. (2003) characterized GS1 as comprising hypomelanosis and severe central nervous system dysfunction, corresponding to the 'dilute' phenotype in the mouse, and GS2 as comprising hypomelanosis and lymphohistiocytic hemophagocytosis, corresponding to the 'ashen' phenotype in mouse.&#13; Anikster et al. (2002), Menasche et al. (2002), Huizing et al. (2002), and Bahadoran et al. (2003, 2003) suggested that Elejalde neuroectodermal melanolysosomal syndrome (256710) in some patients and GS1 represent the same entity.&#13; Genetic Heterogeneity of Griscelli Syndrome&#13; Griscelli syndrome type 2 (GS2; 607624), characterized by hypomelanosis with immunologic impairment, is caused by mutation in the RAB27A gene (603868). Griscelli syndrome type 3 (GS3; 609227), characterized by hypomelanosis with no immunologic or neurologic manifestations, is caused by mutation in the melanophilin (MLPH; 606526) gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347092">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_349134"><div><strong>Autosomal recessive spinocerebellar ataxia 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>349134</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859298</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-2 (SCAR2) is a neurologic disorder characterized by onset of impaired motor development and ataxic gait in early childhood. Additional features often include loss of fine motor skills, dysarthria, nystagmus, cerebellar signs, and delayed cognitive development with intellectual disability. Brain imaging shows cerebellar atrophy. Overall, the disorder is non- or slowly progressive, with survival into adulthood (summary by Jobling et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/349134">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_395225"><div><strong>Cephalin lipidosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>395225</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859307</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/395225">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347149"><div><strong>Osteodysplastic primordial dwarfism, type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347149</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859452</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">RNU4atac-opathy encompasses the phenotypic spectrum of biallelic RNU4ATAC pathogenic variants, including the three historically designated clinical phenotypes microcephalic osteodysplastic primordial dwarfism type I/III (MOPDI), Roifman syndrome, and Lowry-Wood syndrome, as well as varying combinations of the disease features / system involvement that do not match specific defined phenotypes. Findings present in all affected individuals include growth restriction, microcephaly, skeletal dysplasia, and cognitive impairment. Less common but variable findings include brain anomalies, seizures, strokes, immunodeficiency, and cardiac anomalies, as well as ophthalmologic, skin, renal, gastrointestinal, hearing, and endocrine involvement.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347149">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347890"><div><strong>Bird headed-dwarfism, Montreal type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347890</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859468</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic multiple congenital anomalies/dysmorphic syndrome with characteristics of severe short stature and craniofacial dysmorphism (microcephaly, narrow face with flat cheeks, ptosis, prominent nose with a convex ridge, low-set ears with small or absent lobes, high-arched/cleft palate, micrognathia), associated with premature greying and loss of scalp hair, redundant, dry and wrinkled skin of the palms, premature senility and varying degrees of intellectual disability. Cryptorchidism and skeletal anomalies may also be observed. There have been no further descriptions in the literature since 1970.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347890">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347159"><div><strong>Biemond syndrome type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347159</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859487</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An exceedingly rare genetic neurological and developmental disorder reported in a very small number of patients with a poorly defined phenotype including iris coloboma, short stature, obesity, hypogonadism, post axial polydactyly, and intellectual disability. Hydrocephalus and facial dysostosis were also reported. The syndrome shares features with Bardet-Biedl syndrome. There have been no new descriptions in the literature since 1997.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347159">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347898"><div><strong>3-methylcrotonyl-CoA carboxylase 2 deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347898</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859499</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">3-Methylcrotonylglycinuria is an autosomal recessive disorder of leucine catabolism. The clinical phenotype is highly variable, ranging from neonatal onset with severe neurologic involvement to asymptomatic adults. There is a characteristic organic aciduria with massive excretion of 3-hydroxyisovaleric acid and 3-methylcrotonylglycine, usually in combination with a severe secondary carnitine deficiency. MCC activity in extracts of cultured fibroblasts of patients is usually less than 2% of control (summary by Baumgartner et al., 2001).&#13; Also see 3-methylcrotonylglycinuria I (MCC1D; 210200), caused by mutation in the alpha subunit of 3-methylcrotonyl-CoA carboxylase (MCCC1; 609010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347898">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347179"><div><strong>Bardet-Biedl syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347179</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859564</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bardet-Biedl syndrome-3 (BBS3) is a rare autosomal recessive disorder characterized by retinal dystrophy, polydactyly, renal structural abnormalities, and history of obesity. Although mental retardation has been considered part of the BBS phenotype, several patients with BBS3 and normal intelligence have been reported. Additionally, the obesity in several BBS3 patients has been reversible with caloric restriction and exercise (Young et al., 1998; Ghadami et al., 2000).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347179">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347180"><div><strong>Bardet-Biedl syndrome 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347180</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859565</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bardet-Biedl syndrome-7 (BBS7) is an autosomal recessive disorder characterized by retinitis pigmentosa, postaxial polydactyly, impaired intellectual development, obesity, renal anomalies, and hypogenitalism (Harville et al., 2010). Zaghloul and Katsanis (2009) estimated the contribution of BBS7 gene mutations to the total BBS mutational load to be 1.50%.&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347180">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347181"><div><strong>Bardet-Biedl syndrome 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347181</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859566</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">BBS8 is an autosomal recessive disorder characterized by retinitis pigmentosa, obesity, postaxial polydactyly, hypogonadism, and developmental delay (Ansley et al., 2003).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347181">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347182"><div><strong>Bardet-Biedl syndrome 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347182</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859567</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">BBS9 is an autosomal recessive disorder characterized by obesity, polydactyly, renal anomalies, retinopathy, and mental retardation (Abu-Safieh et al., 2012).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347182">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347912"><div><strong>Cooper-Jabs syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347912</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859591</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare multiple congenital anomalies/dysmorphic syndrome characterized by auditory canal atresia (resulting in moderate conductive hearing loss) associated with intellectual disability, ventricular septal defect, umbilical hernia, anteriorly displaced anus, various skeletal anomalies (such as mild clubfoot, long fifth fingers, proximally placed thumbs), and craniofacial dysmorphism which includes brachycephaly, prominent forehead, flattened occiput, midface hypoplasia, anteverted nares, and low set, posteriorly rotated ears with overlapping superior helix. There have been no further descriptions in the literature since 1987.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347912">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_395312"><div><strong>Ataxia, deafness, and cardiomyopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>395312</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859645</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/395312">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347942"><div><strong>Arterial tortuosity syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347942</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859726</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Arterial tortuosity syndrome (ATS) is characterized by widespread elongation and tortuosity of the aorta and mid-sized arteries as well as focal stenosis of segments of the pulmonary arteries and/or aorta combined with findings of a generalized connective tissue disorder, which may include soft or doughy hyperextensible skin, joint hypermobility, inguinal hernia, and diaphragmatic hernia. Skeletal findings include pectus excavatum or carinatum, arachnodactyly, scoliosis, knee/elbow contractures, and camptodactyly. The cardiovascular system is the major source of morbidity and mortality with increased risk at any age for aneurysm formation and dissection both at the aortic root and throughout the arterial tree, and for ischemic vascular events involving cerebrovascular circulation (resulting in non-hemorrhagic stroke) and the abdominal arteries (resulting in infarctions of abdominal organs).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347942">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347952"><div><strong>Aniridia-renal agenesis-psychomotor retardation syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347952</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859782</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An extremely rare syndrome reported in two siblings of non consanguineous parents that is characterized by the association of ocular abnormalities (partial aniridia, congenital glaucoma, telecanthus) with frontal bossing, hypertelorism, unilateral renal agenesis and mild psychomotor delay. There have been no further descriptions in the literature since 1974.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347952">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347240"><div><strong>Amyloidosis of gingiva and conjunctiva, with intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347240</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859815</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347240">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347955"><div><strong>Amino aciduria with mental deficiency, dwarfism, muscular dystrophy, osteoporosis, and acidosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347955</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859818</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347955">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_348473"><div><strong>Leber congenital amaurosis 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>348473</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859844</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">RPE65-related Leber congenital amaurosis / early-onset severe retinal dystrophy (RPE65-LCA/EOSRD) is a severe inherited retinal degeneration (IRD) with a typical presentation between birth and age five years. While central vision varies, the hallmark of this disorder is the presence of severe visual impairment with a deceptively preserved retinal structure. Vision is relatively stable in the first decade of life, but begins to decline in adolescence. Most affected individuals are legally blind (visual acuity 20/200 and/or visual fields extending &lt;20 degrees from fixation) by age 20 years. After age 20 years, visual acuity declines further and by the fourth decade all affected individuals are legally blind and many have complete loss of vision (i.e., no light perception). Milder disease phenotypes have been described in individuals with hypomorphic alleles.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/348473">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347986"><div><strong>Agenesis of cerebral white matter</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347986</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859969</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">Congenital defect with failure of the development of the cerebral white matter.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347986">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_348553"><div><strong>Neuroectodermal melanolysosomal disease</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>348553</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1860157</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Elejalde neuroectodermal melanolysosomal syndrome is a rare autosomal recessive disorder characterized by silvery-gray hair and severe dysfunction of the central nervous system, present from infancy or early childhood and consisting of severe hypotonia, seizures, and impaired intellectual development. Skin may be hypopigmented with bronzing after sun exposure. Microscopy of hair reveals large granules of melanin unevenly distributed in the hair shaft. Abnormal melanocytes and melanosomes and abnormal inclusion bodies in fibroblasts may be present (Elejalde et al., 1979; Duran-McKinster et al., 1999).&#13; It has been proposed that, in at least some cases, Elejalde neuroectodermal melanolysosomal syndrome and Griscelli syndrome type 1 (GS1; 214450) represent the same entity; see below. GS1 is caused by mutation in the MYO5A gene (160777).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/348553">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_349753"><div><strong>Achalasia microcephaly syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>349753</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1860212</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An extremely rare genetic syndrome, reported in a few families to date with characteristics of the association of microcephaly, intellectual deficit and achalasia. Symptoms of achalasia include coughing, dysphagia, vomiting, failure to thrive and aspiration appearing in infancy/early-childhood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/349753">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_348170"><div><strong>Tuberous sclerosis 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>348170</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1860707</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tuberous sclerosis complex (TSC) involves abnormalities of the skin (hypomelanotic macules, confetti skin lesions, facial angiofibromas, shagreen patches, fibrous cephalic plaques, ungual fibromas); brain (subependymal nodules, cortical tubers, and subependymal giant cell astrocytomas [SEGAs], seizures, TSC-associated neuropsychiatric disorder [TAND]); kidneys (benign renal angiomyolipomas, epithelial cysts, oncocytoma, renal cell carcinoma); heart (rhabdomyomas, arrhythmias); and lungs (lymphangioleiomyomatosis [LAM], multifocal micronodular pneumonocyte hyperplasia). Central nervous system-related problems (including TAND) are the leading cause of morbidity, whereas kidney disease is the leading cause of mortality.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/348170">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_349899"><div><strong>Trichorhinophalangeal syndrome, type III</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>349899</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1860823</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Trichorhinophalangeal syndrome (TRPS) is characterized by craniofacial and skeletal abnormalities. Craniofacial features include sparse, slowly growing scalp hair, laterally sparse eyebrows, a bulbous tip of the nose, protruding ears, long flat philtrum, and thin upper vermillion border. The most typical radiographic findings in TRPS are cone-shaped epiphyses, predominantly at the middle phalanges. Hip malformations such as coxa plana, coxa magna, or coxa vara are present in over 70% of patients. In older patients, the hip abnormalities resemble degenerative arthrosis. TRPS3 differs from TRPS1 by the presence of severe brachydactyly, due to short metacarpals, and severe short stature (summary by Ludecke et al., 2001).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/349899">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_349931"><div><strong>Noonan syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>349931</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1860991</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Noonan syndrome (NS) is characterized by characteristic facies, short stature, congenital heart defect, and developmental delay of variable degree. Other findings can include broad or webbed neck, unusual chest shape with superior pectus carinatum and inferior pectus excavatum, cryptorchidism, varied coagulation defects, lymphatic dysplasias, and ocular abnormalities. Although birth length is usually normal, final adult height approaches the lower limit of normal. Congenital heart disease occurs in 50%-80% of individuals. Pulmonary valve stenosis, often with dysplasia, is the most common heart defect and is found in 20%-50% of individuals. Hypertrophic cardiomyopathy, found in 20%-30% of individuals, may be present at birth or develop in infancy or childhood. Other structural defects include atrial and ventricular septal defects, branch pulmonary artery stenosis, and tetralogy of Fallot. Up to one fourth of affected individuals have mild intellectual disability, and language impairments in general are more common in NS than in the general population.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/349931">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_396073"><div><strong>Thumb stiffness-brachydactyly-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>396073</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1861166</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare, genetic, congenital limb malformation syndrome characterized by bilateral thumb ankylosis, type A brachydactyly and mild to moderate intellectual disability. Patients present thumb stiffness and abnormalities of the metacarpal bones, frequently associated with mild facial dysmorphism and signs of obesity. There have been no further descriptions in the literature since 1990.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/396073">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_348284"><div><strong>Thumb deformity-alopecia-pigmentation anomaly syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>348284</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1861168</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic congenital limb malformation syndrome with characteristics of short stature, sparse scalp hair, hypoplastic, proximally placed thumbs and skin hyperpigmentation with areas of ''raindrop'' depigmentation. Presence of a single, upper central incisor has also been reported. There have been no further descriptions in the literature since 1988.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/348284">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_348419"><div><strong>Charcot-Marie-Tooth disease-hearing loss-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>348419</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1861669</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Charcot-Marie-Tooth disease-deafness-intellectual disability syndrome is a rare demyelinating hereditary motor and sensory neuropathy characterized by early-onset, slowly progressive, distal muscular weakness and atrophy with no sensory impairment, congenital sensorineural deafness and mild intellectual disability (with absence of normal speech development). The absence of large myelinated fibers on sural nerve biopsy is equally characteristic of the disease.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/348419">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_350085"><div><strong>Spinocerebellar ataxia type 29</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>350085</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1861732</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spinocerebellar ataxia-29 (SCA29) is an autosomal dominant neurologic disorder characterized by onset in infancy of delayed motor development and mild cognitive delay. Affected individuals develop a very slowly progressive or nonprogressive gait and limb ataxia associated with cerebellar atrophy on brain imaging. Additional variable features include nystagmus, dysarthria, and tremor (summary by Huang et al., 2012).&#13; For a general discussion of autosomal dominant spinocerebellar ataxia, see SCA1 (164400).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/350085">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_350589"><div><strong>Brachydactyly-nystagmus-cerebellar ataxia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>350589</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1862099</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare multiple congenital anomalies/dysmorphic syndrome characterized by brachydactyly, nystagmus, and cerebellar ataxia. Intellectual deficit and strabismus have also been reported. There have been no further descriptions in the literature since 1934.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/350589">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_350610"><div><strong>Weismann-Netter syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>350610</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1862172</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The diagnostic hallmarks of Weismann-Netter syndrome (WNS) are anterior bowing of the diaphyses of the tibia and fibula, broadening or 'tibialization' of the fibula, posterior cortical thickening of both bones, and short stature. The diaphyses of other long bones may be similarly affected, but usually to a milder degree. Some WNS patients have also displayed mental retardation (summary by Peippo et al., 2009).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/350610">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_349489"><div><strong>Axenfeld-Rieger anomaly with partially absent eye muscles, distinctive face, hydrocephaly, and skeletal abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>349489</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1862373</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/349489">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_350678"><div><strong>Arthrogryposis- oculomotor limitation-electroretinal anomalies syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>350678</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1862472</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Distal arthrogryposis type 5 is distinguished from other forms of DA by the presence of ocular abnormalities, typically ptosis, ophthalmoplegia, and/or strabismus, in addition to contractures of the skeletal muscles. Some cases have been reported to have pulmonary hypertension as a result of restrictive lung disease (summary by Bamshad et al., 2009).&#13; There are 2 syndromes with features overlapping those of DA5 that are also caused by heterozygous mutation in PIEZO2: distal arthrogryposis type 3 (DA3, or Gordon syndrome; 114300) and Marden-Walker syndrome (MWKS; 248700), which are distinguished by the presence of cleft palate and mental retardation, respectively. McMillin et al. (2014) suggested that the 3 disorders might represent variable expressivity of the same condition.&#13; For a general phenotypic description and a discussion of genetic heterogeneity of distal arthrogryposis, see DA1A (108120).&#13; Genetic Heterogeneity of Distal Arthrogryposis 5&#13; A subtype of DA5 due to mutation in the ECEL1 gene (605896) on chromosome 2q36 has been designated DA5D (615065). See NOMENCLATURE.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/350678">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_350734"><div><strong>Aortic arch anomaly-facial dysmorphism-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>350734</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1862682</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A developmental anomaly characterized at birth by the presence of right-sided aortic arch, craniofacial dysmorphism (microcephaly, asymmetric, facial bones, broad forehead, borderline hypertelorism, nasal septum deviation, large nasal cavity, large, posteriorly rotated ears, and microstomia with downturned corners), and intellectual disability. These features were observed in 4 members of one family, involving 2 successive generations, suggesting an autosomal dominant mode of transmission. There have been no further descriptions in the literature since 1968.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/350734">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_354871"><div><strong>Amyotrophic dystonic paraplegia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>354871</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1862956</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/354871">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_350933"><div><strong>Acromelic frontonasal dysostosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>350933</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1863616</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Verloes et al. (1992) described a rare variant of frontonasal dysplasia (see FND1, 136760), designated acromelic frontonasal dysplasia (AFND), in which similar craniofacial anomalies are associated with variable central nervous system malformations and limb defects including tibial hypoplasia/aplasia, talipes equinovarus, and preaxial polydactyly of the feet.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/350933">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355084"><div><strong>Arrhinia with choanal atresia and microphthalmia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355084</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1863878</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bosma arhinia microphthalmia syndrome (BAMS) is characterized by severe hypoplasia of the nose and eyes, palatal abnormalities, deficient taste and smell, inguinal hernias, hypogonadotropic hypogonadism with cryptorchidism, and normal intelligence (summary by Graham and Lee, 2006).&#13; Also see absence of nasal bones (161480).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355084">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355199"><div><strong>Acromesomelic dysplasia 1, Maroteaux type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355199</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864356</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The acromesomelic dysplasias are disorders in which there is disproportionate shortening of skeletal elements, predominantly affecting the middle segments (forearms and forelegs) and distal segments (hands and feet) of the appendicular skeleton.&#13; Acromesomelic dysplasia-1 (AMD1) is characterized by severe dwarfism (height below 120 cm) with shortening of the middle and distal segments of the limbs. This condition is usually diagnosed at birth and becomes more obvious in the first 2 years of life. X-rays show short broad fingers, square flat feet, and shortening of the long bones (particularly the forearms). The radius is bowed; the ulna is shorter than the radius, and its distal end is occasionally hypoplastic. The skull is dolichocephalic and a shortness of the trunk, with decreased vertebral height and narrowing of the lumbar interpedicular distances, is consistently observed. Facial appearance and intelligence are normal (summary by Faivre et al., 2000).&#13; Genetic Heterogeneity of Acromesomelic Dysplasia&#13; Additional autosomal recessive forms of acromesomelic dysplasia include acromesomelic dysplasia-2A (200700), -2B (228900), and -2C (201250), all caused by mutation in the GDF5 gene (601146) on chromosome 20q11; AMD3 (200700), caused by mutation in the BMPR1B gene (603248) on chromosome 4q22; and AMD4 (619636), caused by mutation in the PRKG2 gene (601591) on chromosome 4q21.&#13; An autosomal dominant form of acromesomelic dysplasia has also been reported (see 112910).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355199">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355217"><div><strong>Muenke syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355217</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864436</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Muenke syndrome is characterized by considerable phenotypic variability; features may include coronal synostosis (more often bilateral than unilateral); synostosis of other sutures, all sutures (pan synostosis), or no sutures; or macrocephaly. Bilateral coronal synostosis typically results in brachycephaly, although turribrachycephaly (a "tower-shaped" skull) or a cloverleaf skull can be observed. Unilateral coronal synostosis results in anterior plagiocephaly. Other craniofacial findings typically include temporal bossing, widely spaced eyes, ptosis or mild proptosis, mild midface retrusion, and highly arched palate or cleft lip and palate. Strabismus is common. Other findings can include hearing loss, developmental delay, intellectual disability, behavioral issues, intracranial anomalies, epilepsy, ocular anomalies, brachydactyly, carpal and/or tarsal bone fusions, broad thumbs and great toes, clinodactyly, and radiographic findings of short and broad middle phalanges and/or cone-shaped epiphyses. Of note, some individuals who have the p.Pro250Arg pathogenic variant may have no signs of Muenke syndrome on physical or radiographic examination.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355217">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_351162"><div><strong>Cataract 11 multiple types</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>351162</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864567</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mutations in the PITX3 gene have been found to cause multiple types of cataract, which have been described as congenital total and posterior polar.&#13; The preferred title/symbol for this entry was formerly 'Cataract, Posterior Polar, 4; CTPP4.'</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/351162">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_350477"><div><strong>Rubinstein-Taybi syndrome due to 16p13.3 microdeletion</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>350477</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864648</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Chromosome 16p13.3deletion syndrome is a chromosome abnormality that can affect many parts of the body. People with this condition are missing a small piece (deletion) of chromosome 16 at a location designated p13.3. Although once thought to be a severe form of Rubinstein-Taybi syndrome, it is now emerging as a unique syndrome. Signs and symptoms may include failure to thrive, hypotonia (reduced muscle tone), short stature, microcephaly (unusually small head), characteristic facial features, mild to moderate intellectual disability, organ anomalies (i.e. heart and/or kidney problems), and vulnerability to infections. Chromosome testing of both parents can provide information about whether the deletion was inherited. In most cases, parents do not have any chromosome abnormalities. However, sometimes one parent has a balanced translocation where a piece of a chromosome has broken off and attached to another one with no gain or loss of genetic material. The balanced translocation normally does not cause signs or symptoms, but it increases the risk for having a child with a chromosome abnormality like a deletion. Treatment is based on the signs and symptoms present in each person.To learn more about chromosome abnormalities in general, view our GARD fact sheet on Chromosome Disorders.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/350477">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_501134"><div><strong>Hypomyelination and Congenital Cataract</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>501134</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864663</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Hypomyelination and congenital cataract (HCC) is usually characterized by bilateral congenital cataracts and normal psychomotor or only mildly delayed development in the first year of life, followed by slowly progressive neurologic impairment manifest as ataxia, spasticity (brisk tendon reflexes and bilateral extensor plantar responses), and mild-to-moderate cognitive impairment. Dysarthria and truncal hypotonia are observed. Cerebellar signs (truncal titubation and intention tremor) and peripheral neuropathy (muscle weakness and wasting of the legs) are present in the majority of affected individuals. Seizures can occur. Cataracts may be absent in some individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/501134">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_351204"><div><strong>Isolated microphthalmia 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>351204</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864720</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any isolated microphthalmia in which the cause of the disease is a mutation in the VSX2 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/351204">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355302"><div><strong>Autosomal recessive nonsyndromic hearing loss 46</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355302</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864815</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An autosomal recessive nonsyndromic deafness that has material basis in variation in the chromosome region 18p11.32-p11.31.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355302">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355304"><div><strong>Holoprosencephaly 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355304</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864827</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Holoprosencephaly associated with mutations in the ZIC2 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355304">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355844"><div><strong>Camptodactyly-tall stature-scoliosis-hearing loss syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355844</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864852</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">This syndrome has characteristics of camptodactyly, tall stature, scoliosis, and hearing loss (CATSHL). It has been described in around 30 individuals from seven generations of the same family. The syndrome is caused by a missense mutation in the FGFR3 gene, leading to a partial loss of function of the encoded protein, which is a negative regulator of bone growth.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355844">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355853"><div><strong>Koolen-de Vries syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355853</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864871</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Koolen-de Vries syndrome (KdVS) is characterized by congenital malformations, developmental delay / intellectual disability, neonatal/childhood hypotonia, epilepsy, dysmorphisms, and behavioral features. Psychomotor developmental delay is noted in all individuals from an early age. The majority of individuals with KdVS function in the mild-to-moderate range of intellectual disability. Other findings include speech and language delay (100%), epilepsy (~33%), congenital heart defects (25%-50%), renal and urologic anomalies (25%-50%), and cryptorchidism. Behavior in most is described as friendly, amiable, and cooperative.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355853">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355314"><div><strong>Spondyloepimetaphyseal dysplasia, Genevieve type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355314</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864872</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spondyloepiphyseal dysplasia of the Genevieve type (SEMDG) is characterized by infantile-onset severe developmental delay and skeletal dysplasia, including short stature, premature carpal ossification, platyspondyly, longitudinal metaphyseal striations, and small epiphyses (summary by van Karnebeek et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355314">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355328"><div><strong>Neuronal ceroid lipofuscinosis 8 northern epilepsy variant</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355328</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864923</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The lipopigment patterns observed most often in CLN8 comprise mixed combinations of 'granular,' 'curvilinear,' and 'fingerprint' profiles (Mole et al., 2005).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of CLN, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355328">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_400646"><div><strong>Hyperinsulinemic hypoglycemia, familial, 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>400646</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864948</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital hyperinsulinism is a condition that causes individuals to have abnormally high levels of insulin. Insulin is a hormone that helps control levels of blood glucose, also called blood sugar. People with this condition have frequent episodes of low blood glucose (hypoglycemia). In infants and young children, these episodes are characterized by a lack of energy (lethargy), irritability, or difficulty feeding. Repeated episodes of low blood glucose increase the risk for serious complications such as breathing difficulties, seizures, intellectual disability, vision loss, brain damage, and coma.\n\nThe severity of congenital hyperinsulinism varies widely among affected individuals, even among members of the same family. About 60 percent of infants with this condition experience a hypoglycemic episode within the first month of life. Other affected children develop hypoglycemia by early childhood. Unlike typical episodes of hypoglycemia, which occur most often after periods without food (fasting) or after exercising, episodes of hypoglycemia in people with congenital hyperinsulinism can also occur after eating.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/400646">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355365"><div><strong>Familial scaphocephaly syndrome, McGillivray type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355365</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865070</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Familial scaphocephaly syndrome, McGillivray type is a rare newly described craniosynostosis (see this term) syndrome characterized by scaphocephaly, macrocephaly, severe maxillary retrusion, and mild intellectual disability.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355365">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355943"><div><strong>Megaconial type congenital muscular dystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355943</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865233</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CHKB-related muscular dystrophy (CHKB-MD), reported in 47 individuals to date, comprises congenital muscular dystrophy (CMD) (44 individuals) and adolescent-onset limb-girdle muscular dystrophy (LGMD) (3 individuals). CMD: All affected children have developmental delay and speech delay; gross motor milestones are delayed with subsequent loss of ambulation over time. Most have intellectual disability of varying severity; some have no speech. Autism spectrum disorder or attention-deficit/hyperactivity disorder is common. Dilated cardiomyopathy, seen in 14 children, resulted in death from heart failure in five and cardiac transplantation in one. Seizures are seen in some individuals. Ichthyosis is common. LGMD: Motor development is normal; all affected children start walking at the usual age. Two affected individuals presented with rhabdomyolysis. One had mild intellectual disability. Behavior abnormalities and dilated cardiomyopathy were not observed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355943">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355427"><div><strong>Grange syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355427</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865267</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Grange syndrome (GRNG) is a rare early-onset disease characterized by hypertension and multifocal stenoocclusive lesions of renal, cerebral, and abdominal arteries. Bone fragility, syndactyly, brachydactyly, congenital heart defects, and learning disabilities have been reported with variable expressivity and incomplete penetrance (summary by Rath et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355427">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355430"><div><strong>Bartter disease type 4A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355430</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865270</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bartter syndrome refers to a group of disorders that are unified by autosomal recessive transmission of impaired salt reabsorption in the thick ascending loop of Henle with pronounced salt wasting, hypokalemic metabolic alkalosis, and hypercalciuria. Clinical disease results from defective renal reabsorption of sodium chloride in the thick ascending limb (TAL) of the Henle loop, where 30% of filtered salt is normally reabsorbed (Simon et al., 1997).&#13; Patients with antenatal (or neonatal) forms of Bartter syndrome typically present with premature birth associated with polyhydramnios and low birth weight and may develop life-threatening dehydration in the neonatal period. Patients with classic Bartter syndrome (see BARTS3, 607364) present later in life and may be sporadically asymptomatic or mildly symptomatic (summary by Simon et al., 1996 and Fremont and Chan, 2012).&#13; For a discussion of genetic heterogeneity of Bartter syndrome, see 607364.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355430">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355421"><div><strong>Megalencephaly-capillary malformation-polymicrogyria syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355421</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865285</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PIK3CA-related overgrowth spectrum (PROS) encompasses a range of clinical findings in which the core features are congenital or early-childhood onset of segmental/focal overgrowth with or without cellular dysplasia. Prior to the identification of PIK3CA as the causative gene, PROS was separated into distinct clinical syndromes based on the tissues and/or organs involved (e.g., MCAP [megalencephaly-capillary malformation] syndrome and CLOVES [congenital lipomatous asymmetric overgrowth of the trunk, lymphatic, capillary, venous, and combined-type vascular malformations, epidermal nevi, skeletal and spinal anomalies] syndrome). The predominant areas of overgrowth include the brain, limbs (including fingers and toes), trunk (including abdomen and chest), and face, all usually in an asymmetric distribution. Generalized brain overgrowth may be accompanied by secondary overgrowth of specific brain structures resulting in ventriculomegaly, a markedly thick corpus callosum, and cerebellar tonsillar ectopia with crowding of the posterior fossa. Vascular malformations may include capillary, venous, and less frequently, arterial or mixed (capillary-lymphatic-venous or arteriovenous) malformations. Lymphatic malformations may be in various locations (internal and/or external) and can cause various clinical issues, including swelling, pain, and occasionally localized bleeding secondary to trauma. Lipomatous overgrowth may occur ipsilateral or contralateral to a vascular malformation, if present. The degree of intellectual disability appears to be mostly related to the presence and severity of seizures, cortical dysplasia (e.g., polymicrogyria), and hydrocephalus. Many children have feeding difficulties that are often multifactorial in nature. Endocrine issues affect a small number of individuals and most commonly include hypoglycemia (largely hypoinsulinemic hypoketotic hypoglycemia), hypothyroidism, and growth hormone deficiency.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355421">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355435"><div><strong>Hyperinsulinism due to glucokinase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355435</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865290</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital hyperinsulinism is a condition that causes individuals to have abnormally high levels of insulin. Insulin is a hormone that helps control levels of blood glucose, also called blood sugar. People with this condition have frequent episodes of low blood glucose (hypoglycemia). In infants and young children, these episodes are characterized by a lack of energy (lethargy), irritability, or difficulty feeding. Repeated episodes of low blood glucose increase the risk for serious complications such as breathing difficulties, seizures, intellectual disability, vision loss, brain damage, and coma.\n\nThe severity of congenital hyperinsulinism varies widely among affected individuals, even among members of the same family. About 60 percent of infants with this condition experience a hypoglycemic episode within the first month of life. Other affected children develop hypoglycemia by early childhood. Unlike typical episodes of hypoglycemia, which occur most often after periods without food (fasting) or after exercising, episodes of hypoglycemia in people with congenital hyperinsulinism can also occur after eating.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355435">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355962"><div><strong>Migraine, familial hemiplegic, 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355962</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865322</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Familial hemiplegic migraine (FHM) falls within the category of migraine with aura. In migraine with aura (including FHM) the neurologic symptoms of aura are unequivocally localizable to the cerebral cortex or brain stem and include visual disturbance (most common), sensory loss (e.g., numbness or paresthesias of the face or an extremity), and dysphasia (difficulty with speech). FHM must include motor involvement, such as hemiparesis (weakness of an extremity). Hemiparesis occurs with at least one other symptom during FHM aura. Neurologic deficits with FHM attacks can be prolonged for hours to days and may outlast the associated migrainous headache. FHM is often earlier in onset than typical migraine, frequently beginning in the first or second decade; the frequency of attacks tends to decrease with age. Approximately 40%-50% of families with CACNA1A-FHM have cerebellar signs ranging from nystagmus to progressive, usually late-onset mild ataxia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355962">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355966"><div><strong>Ethylmalonic encephalopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355966</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865349</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ethylmalonic encephalopathy (EE) is a severe, early-onset, progressive disorder characterized by developmental delay / mild-to-severe intellectual disability; generalized infantile hypotonia that evolves into hypertonia, spasticity, and (in some instances) dystonia; generalized tonic-clonic seizures; and generalized microvascular damage (diffuse and spontaneous relapsing petechial purpura, hemorrhagic suffusions of mucosal surfaces, and chronic hemorrhagic diarrhea). Infants sometimes have frequent vomiting and loss of social interaction. Speech is delayed and in some instances absent. Swallowing difficulties and failure to thrive are common. Children may be unable to walk without support and may be wheelchair bound. Neurologic deterioration accelerates following intercurrent infectious illness, and the majority of children die in the first decade.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355966">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355971"><div><strong>Short stature-auditory canal atresia-mandibular hypoplasia-skeletal anomalies syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355971</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865361</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Short stature, auditory canal atresia, mandibular hypoplasia, and skeletal abnormalities (SAMS) is an autosomal recessive multiple congenital anomaly syndrome with features of a first and second branchial arch syndrome. Craniofacial abnormalities can lead to conductive hearing loss, respiratory insufficiency, and feeding difficulties. Additional features include rhizomelic skeletal anomalies as well as abnormalities of the shoulder and pelvic joints. Affected individuals may also have some features of a neurocristopathy or abnormal mesoderm development, such as urogenital anomalies, that are distinct from other branchial arch syndromes (summary by Parry et al., 2013).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355971">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_356049"><div><strong>Pierpont syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>356049</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865644</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pierpont syndrome (PRPTS) is a multiple congenital anomaly syndrome associated with learning disability. Key features include distinctive facial characteristics, especially when smiling, plantar fat pads, and other limb anomalies (summary by Burkitt Wright et al., 2011).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/356049">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_400935"><div><strong>PHGDH deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>400935</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1866174</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Serine deficiency disorders include a spectrum of disease ranging from lethal prenatal-onset Neu-Laxova syndrome to serine deficiency with infantile, juvenile, or adult onset. Neu-Laxova syndrome is characterized by severe intrauterine growth deficiency, microcephaly, congenital bilateral cataracts, characteristic dysmorphic features, limb anomalies, and collodion-like ichthyosis. Infants are typically stillborn or die in early infancy. Infantile-onset serine deficiency is characterized by seizures, microcephaly, developmental delay, intellectual disability, and spastic quadriplegia. Individuals that present with juvenile-onset serine deficiency have seizures and many develop spastic quadriplegia. Adult-onset serine deficiency is characterized by progressive axonal polyneuropathy with ataxia and possible cognitive impairment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/400935">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_356497"><div><strong>Ehlers-Danlos syndrome, musculocontractural type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>356497</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1866294</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bleeding problems are common in the vascular type of Ehlers-Danlos syndrome and are caused by unpredictable tearing (rupture) of blood vessels and organs. These complications can lead to easy bruising, internal bleeding, a hole in the wall of the intestine (intestinal perforation), or stroke. During pregnancy, women with vascular Ehlers-Danlos syndrome may experience rupture of the uterus. Additional forms of Ehlers-Danlos syndrome that involve rupture of the blood vessels include the kyphoscoliotic, classical, and classical-like types.\n\nOther types of Ehlers-Danlos syndrome have additional signs and symptoms. The cardiac-valvular type causes severe problems with the valves that control the movement of blood through the heart. People with the kyphoscoliotic type experience severe curvature of the spine that worsens over time and can interfere with breathing by restricting lung expansion. A type of Ehlers-Danlos syndrome called brittle cornea syndrome is characterized by thinness of the clear covering of the eye (the cornea) and other eye abnormalities. The spondylodysplastic type features short stature and skeletal abnormalities such as abnormally curved (bowed) limbs. Abnormalities of muscles, including hypotonia and permanently bent joints (contractures), are among the characteristic signs of the musculocontractural and myopathic forms of Ehlers-Danlos syndrome. The periodontal type causes abnormalities of the teeth and gums.\n\nMany people with the Ehlers-Danlos syndromes have soft, velvety skin that is highly stretchy (elastic) and fragile. Affected individuals tend to bruise easily, and some types of the condition also cause abnormal scarring. People with the classical form of Ehlers-Danlos syndrome experience wounds that split open with little bleeding and leave scars that widen over time to create characteristic "cigarette paper" scars. The dermatosparaxis type of the disorder is characterized by loose skin that sags and wrinkles, and extra (redundant) folds of skin may be present.\n\nAn unusually large range of joint movement (hypermobility) occurs in most forms of Ehlers-Danlos syndrome, and it is a hallmark feature of the hypermobile type. Infants and children with hypermobility often have weak muscle tone (hypotonia), which can delay the development of motor skills such as sitting, standing, and walking. The loose joints are unstable and prone to dislocation and chronic pain. In the arthrochalasia type of Ehlers-Danlos syndrome, infants have hypermobility and dislocations of both hips at birth.\n\nThe various forms of Ehlers-Danlos syndrome have been classified in several different ways. Originally, 11 forms of Ehlers-Danlos syndrome were named using Roman numerals to indicate the types (type I, type II, and so on). In 1997, researchers proposed a simpler classification (the Villefranche nomenclature) that reduced the number of types to six and gave them descriptive names based on their major features. In 2017, the classification was updated to include rare forms of Ehlers-Danlos syndrome that were identified more recently. The 2017 classification describes 13 types of Ehlers-Danlos syndrome.\n\nEhlers-Danlos syndrome is a group of disorders that affect connective tissues supporting the skin, bones, blood vessels, and many other organs and tissues. Defects in connective tissues cause the signs and symptoms of these conditions, which range from mildly loose joints to life-threatening complications.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/356497">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355727"><div><strong>Bartter disease type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355727</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1866495</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bartter syndrome refers to a group of disorders that are unified by autosomal recessive transmission of impaired salt reabsorption in the thick ascending loop of Henle with pronounced salt wasting, hypokalemic metabolic alkalosis, and hypercalciuria. Clinical disease results from defective renal reabsorption of sodium chloride in the thick ascending limb (TAL) of the Henle loop, where 30% of filtered salt is normally reabsorbed (Simon et al., 1997).&#13; Patients with antenatal forms of Bartter syndrome typically present with premature birth associated with polyhydramnios and low birth weight and may develop life-threatening dehydration in the neonatal period. Patients with classic Bartter syndrome (see BARTS3, 607364) present later in life and may be sporadically asymptomatic or mildly symptomatic (summary by Simon et al., 1996 and Fremont and Chan, 2012).&#13; For a discussion of genetic heterogeneity of Bartter syndrome, see 607364.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355727">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355730"><div><strong>Trichothiodystrophy 1, photosensitive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355730</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1866504</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Trichothiodystrophy is also associated with recurrent infections, particularly respiratory infections, which can be life-threatening. People with trichothiodystrophy may have abnormal red blood cells, including red blood cells that are smaller than normal. They may also have elevated levels of a type of hemoglobin called A2, which is a protein found in red blood cells. Other features of trichothiodystrophy can include dry, scaly skin (ichthyosis); abnormalities of the fingernails and toenails; clouding of the lens in both eyes from birth (congenital cataracts); poor coordination; and skeletal abnormalities including degeneration of both hips at an early age.\n\nAbout half of all people with trichothiodystrophy have a photosensitive form of the disorder, which causes them to be extremely sensitive to ultraviolet (UV) rays from sunlight. They develop a severe sunburn after spending just a few minutes in the sun. However, for reasons that are unclear, they do not develop other sun-related problems such as excessive freckling of the skin or an increased risk of skin cancer. Many people with trichothiodystrophy report that they do not sweat.\n\nIntellectual disability and delayed development are common in people with trichothiodystrophy, although most affected individuals are highly social with an outgoing and engaging personality. Some people with trichothiodystrophy have brain abnormalities that can be seen with imaging tests. A common neurological feature of this disorder is impaired myelin production (dysmyelination). Myelin is a fatty substance that insulates nerve cells and promotes the rapid transmission of nerve impulses.\n\nMothers of children with trichothiodystrophy may experience problems during pregnancy including pregnancy-induced high blood pressure (preeclampsia) and a related condition called HELLP syndrome that can damage the liver. Babies with trichothiodystrophy are at increased risk of premature birth, low birth weight, and slow growth. Most children with trichothiodystrophy have short stature compared to others their age. \n\nThe signs and symptoms of trichothiodystrophy vary widely. Mild cases may involve only the hair. More severe cases also cause delayed development, significant intellectual disability, and recurrent infections; severely affected individuals may survive only into infancy or early childhood.\n\nIn people with trichothiodystrophy, tests show that the hair is lacking sulfur-containing proteins that normally gives hair its strength. A cross section of a cut hair shows alternating light and dark banding that has been described as a "tiger tail."\n\nTrichothiodystrophy, commonly called TTD, is a rare inherited condition that affects many parts of the body. The hallmark of this condition is hair that is sparse and easily broken. </div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355730">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_355816"><div><strong>Spastic paraplegia-nephritis-deafness syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355816</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1866853</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia-nephritis-deafness syndrome is a complex form of hereditary spastic paraplegia characterized by progressive, variable spastic paraplegia associated with bilateral sensorineural deafness, intellectual disability, and progressive nephropathy. There have been no further descriptions in the literature since 1988.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355816">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_401097"><div><strong>Hereditary spastic paraplegia 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>401097</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1866855</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia 4 (SPG4; also known as SPAST-HSP) is characterized by insidiously progressive bilateral lower-limb gait spasticity. More than 50% of affected individuals have some weakness in the legs and impaired vibration sense at the ankles. Sphincter disturbances are very common. Onset is insidious, mostly in young adulthood, although symptoms may start as early as age one year and as late as age 76 years. Intrafamilial variation is considerable.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/401097">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_357988"><div><strong>Short stature-craniofacial anomalies-genital hypoplasia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>357988</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1867443</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pterygia, impaired intellectual development, and distinctive craniofacial features is a chromosomal disorder characterized by these cardinal features. Craniofacial features include trigonocephaly and retrognathia. Intellectual development may be severely impaired (summary by Devriendt et al., 2000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/357988">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_358131"><div><strong>Orofaciodigital syndrome V</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>358131</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1868118</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Orofaciodigital syndrome V (OFD5) is an autosomal recessive disorder characterized by cleft palate/uvula, lobulated tongue, frontal bossing, hypertelorism, postaxial polydactyly, and impaired intellectual development (summary by Faily et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/358131">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_358177"><div><strong>Piebald trait-neurologic defects syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>358177</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1868311</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic pigmentation anomaly of the skin syndrome with characteristics of ventral as well as dorsal leukoderma of the trunk and a congenital white forelock in association with cerebellar ataxia, impaired motor coordination, intellectual disability of variable severity and progressive, mild to profound, unilateral or bilateral sensorineural hearing loss. There have been no further descriptions in the literature since 1971.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/358177">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_358366"><div><strong>Parastremmatic dwarfism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>358366</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1868616</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">The autosomal dominant TRPV4 disorders (previously considered to be clinically distinct phenotypes before their molecular basis was discovered) are now grouped into neuromuscular disorders and skeletal dysplasias; however, the overlap within each group is considerable. Affected individuals typically have either neuromuscular or skeletal manifestations alone, and in only rare instances an overlap syndrome has been reported. The three autosomal dominant neuromuscular disorders (mildest to most severe) are: Charcot-Marie-Tooth disease type 2C. Scapuloperoneal spinal muscular atrophy. Congenital distal spinal muscular atrophy. The autosomal dominant neuromuscular disorders are characterized by a congenital-onset, static, or later-onset progressive peripheral neuropathy with variable combinations of laryngeal dysfunction (i.e., vocal fold paresis), respiratory dysfunction, and joint contractures. The six autosomal dominant skeletal dysplasias (mildest to most severe) are: Familial digital arthropathy-brachydactyly. Autosomal dominant brachyolmia. Spondylometaphyseal dysplasia, Kozlowski type. Spondyloepiphyseal dysplasia, Maroteaux type. Parastremmatic dysplasia. Metatropic dysplasia. The skeletal dysplasia is characterized by brachydactyly (in all 6); the five that are more severe have short stature that varies from mild to severe with progressive spinal deformity and involvement of the long bones and pelvis. In the mildest of the autosomal dominant TRPV4 disorders life span is normal; in the most severe it is shortened. Bilateral progressive sensorineural hearing loss (SNHL) can occur with both autosomal dominant neuromuscular disorders and skeletal dysplasias.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/358366">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_365037"><div><strong>Paris-Trousseau thrombocytopenia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>365037</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1956093</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Paris-Trousseau thrombocytopenia (TCPT) is a contiguous gene syndrome characterized by mild bleeding tendency, variable thrombocytopenia (THC), dysmorphic facies, abnormal giant alpha-granules in platelets and dysmegakaryopoiesis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/365037">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_409522"><div><strong>Dihydropyrimidine dehydrogenase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>409522</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1959620</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dihyropyrimidine dehydrogenase deficiency (DPYDD) shows large phenotypic variability, ranging from no symptoms to a convulsive disorder with motor and mental retardation in homozygous patients. In addition, homozygous and heterozygous mutation carriers can develop severe toxicity after the administration of the antineoplastic drug 5-fluorouracil (5FU), which is also catabolized by the DPYD enzyme. This is an example of a pharmacogenetic disorder (Van Kuilenburg et al., 1999).&#13; Since there is no correlation between genotype and phenotype in DPD deficiency, it appears that the deficiency is a necessary, but not sufficient, prerequisite for the development of clinical abnormalities (Van Kuilenburg et al., 1999; Enns et al., 2004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/409522">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_369401"><div><strong>Joubert syndrome 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>369401</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1969053</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/369401">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370589"><div><strong>Noonan syndrome 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370589</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1969057</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Noonan syndrome (NS) is characterized by characteristic facies, short stature, congenital heart defect, and developmental delay of variable degree. Other findings can include broad or webbed neck, unusual chest shape with superior pectus carinatum and inferior pectus excavatum, cryptorchidism, varied coagulation defects, lymphatic dysplasias, and ocular abnormalities. Although birth length is usually normal, final adult height approaches the lower limit of normal. Congenital heart disease occurs in 50%-80% of individuals. Pulmonary valve stenosis, often with dysplasia, is the most common heart defect and is found in 20%-50% of individuals. Hypertrophic cardiomyopathy, found in 20%-30% of individuals, may be present at birth or develop in infancy or childhood. Other structural defects include atrial and ventricular septal defects, branch pulmonary artery stenosis, and tetralogy of Fallot. Up to one fourth of affected individuals have mild intellectual disability, and language impairments in general are more common in NS than in the general population.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370589">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_409857"><div><strong>Intellectual disability, autosomal dominant 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>409857</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1969562</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">MBD5 haploinsufficiency is a neurodevelopmental disorder characterized by developmental delay, intellectual disability, severe speech impairment, seizures, sleep disturbances, and abnormal behaviors. Most children lack speech entirely or have single words, short phrases, or short sentences. Seizures are present in more than 80% of children; onset is usually around age two years. Sleep disturbances, present in about 90%, can result in excessive daytime drowsiness. Abnormal behaviors can include autistic-like behaviors (80%) and self-injury and aggression (&gt;60%).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/409857">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_409897"><div><strong>Autism, susceptibility to, 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>409897</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1969710</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Autism, the prototypic pervasive developmental disorder (PDD), is usually apparent by 3 years of age. It is characterized by a triad of limited or absent verbal communication, a lack of reciprocal social interaction or responsiveness, and restricted, stereotypical, and ritualized patterns of interests and behavior (Bailey et al., 1996; Risch et al., 1999). 'Autism spectrum disorder,' sometimes referred to as ASD, is a broader phenotype encompassing the less severe disorders Asperger syndrome (see ASPG1; 608638) and pervasive developmental disorder, not otherwise specified (PDD-NOS). 'Broad autism phenotype' includes individuals with some symptoms of autism, but who do not meet the full criteria for autism or other disorders. Mental retardation coexists in approximately two-thirds of individuals with ASD, except for Asperger syndrome, in which mental retardation is conspicuously absent (Jones et al., 2008). Genetic studies in autism often include family members with these less stringent diagnoses (Schellenberg et al., 2006).&#13; For a discussion of genetic heterogeneity of autism, see 209850.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/409897">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_369613"><div><strong>Intellectual disability, FRA12A type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>369613</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1969893</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">FRA12A is a folate-sensitive chromosomal fragile site prone to breakage. No consistent phenotype has been observed with FRA12A, and it can be inherited without phenotypic effect (Berg et al., 2000). However, impaired intellectual development with or without other anomalies has been described in patients with over 40% of cells expressing FRA12A (Winnepenninckx et al., 2007).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/369613">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_409971"><div><strong>COG8-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>409971</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970021</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome with characteristics of severe psychomotor retardation, failure to thrive and intolerance to wheat and dairy products. So far, only two cases have been described. The disease is caused by mutations in the COG8 gene, which encodes a subunit of the COG complex. This complex is involved vesicle transport in the Golgi apparatus.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/409971">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370148"><div><strong>Craniofacial dysplasia - osteopenia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370148</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970027</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic developmental defect during embryogenesis disorder with characteristics of craniofacial dysmorphism (including brachycephaly, prominent forehead, sparse lateral eyebrows, severe hypertelorism, upslanting palpebral fissures, epicanthal folds, protruding ears, broad nasal bridge, pointed nasal tip, flat philtrum, anteverted nostrils, large mouth, thin upper vermilion border, highly arched palate and mild micrognathia) associated with osteopenia leading to repeated long bone fractures, severe myopia, mild to moderate sensorineural or mixed hearing loss, enamel hypoplasia, sloping shoulders and mild intellectual disability. There is evidence the disease can be caused by homozygous mutation in the IRX5 gene on chromosome 16q11.2.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370148">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370844"><div><strong>Intellectual disability, autosomal recessive 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370844</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970179</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370844">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_369678"><div><strong>Intellectual disability, autosomal recessive 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>369678</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970195</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/369678">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370847"><div><strong>Intellectual disability, autosomal recessive 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370847</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970197</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the TUSC3 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370847">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370848"><div><strong>Intellectual disability, autosomal recessive 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370848</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970198</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the GRIK2 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370848">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370849"><div><strong>Intellectual disability, autosomal recessive 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370849</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970199</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the NSUN2 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370849">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370850"><div><strong>Intellectual disability, autosomal recessive 12</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370850</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970200</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370850">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370203"><div><strong>Polyhydramnios, megalencephaly, and symptomatic epilepsy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370203</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970203</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic neurological disorder with characteristics of pregnancy complicated by polyhydramnios, severe intractable epilepsy presenting in infancy, severe hypotonia, decreased muscle mass, global developmental delay, craniofacial dysmorphism (long face, large forehead, peaked eyebrows, broad nasal bridge, hypertelorism, large mouth with thick lips), and macrocephaly due to megalencephaly and hydrocephalus in most patients. Additional features that have been reported include cardiac anomalies like atrial septal defects, diabetes insipidus and nephrocalcinosis among others.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370203">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370883"><div><strong>Autosomal recessive proximal renal tubular acidosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370883</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970309</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Proximal renal tubular acidosis-ocular anomaly syndrome (PRTAO) is a rare autosomal recessive systemic disease resulting from isolated impairment of bicarbonate (HCO3-) reabsorption in the proximal renal tubules, which is characterized by a decreased renal HCO3- threshold. Affected individuals exhibit stunted growth and eye anomalies, including band keratopathy, cataracts, and glaucoma. Affected individuals may also exhibit impaired intellectual development and dental defects (Igarashi et al., 2001; Inatomi et al., 2004; Dinour et al., 2004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370883">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370234"><div><strong>SLC35A1-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370234</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970344</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An extremely rare form of carbohydrate deficient glycoprotein syndrome characterized clinically in the single reported case by repeated hemorrhagic incidents, including severe pulmonary hemorrhage.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370234">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_372646"><div><strong>Syndromic X-linked intellectual disability 14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>372646</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970822</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any X-linked syndromic intellectual disability in which the cause of the disease is a mutation in the UPF3B gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/372646">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_370358"><div><strong>Phosphoribosylpyrophosphate synthetase superactivity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370358</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970827</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Phosphoribosylpyrophosphate synthetase (PRS) superactivity comprises two phenotypes, both characterized by hyperuricemia and hyperuricosuria. The mild phenotype (~75% of affected males) with onset in the second or third decade of life is typically limited to these biochemical findings, whereas the severe phenotype (~25% of affected males) with onset in the first decade of life has in addition to these biochemical findings variable combinations of developmental delay (DD) / intellectual disability (ID), sensorineural hearing loss, hypotonia, and ataxia. In the mild phenotype, uric acid crystalluria or a urinary stone is commonly the first clinical finding, followed later by gouty arthritis if serum urate concentration is not controlled.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/370358">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_410164"><div><strong>Intellectual disability, X-linked 93</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>410164</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970841</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the BRWD3 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/410164">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_410166"><div><strong>Glycogen storage disease due to phosphoglycerate kinase 1 deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>410166</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1970848</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Phosphoglycerate kinase-1 deficiency is an X-linked recessive condition with a highly variable clinical phenotype that includes hemolytic anemia, myopathy, and neurologic involvement. Patients can express 1, 2, or all 3 of these manifestations (Shirakawa et al., 2006).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/410166">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_382033"><div><strong>Autosomal dominant familial hematuria-retinal arteriolar tortuosity-contractures syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382033</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2673195</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The spectrum of COL4A1-related disorders includes: small-vessel brain disease of varying severity including porencephaly, variably associated with eye defects (retinal arterial tortuosity, Axenfeld-Rieger anomaly, cataract) and systemic findings (kidney involvement, muscle cramps, cerebral aneurysms, Raynaud phenomenon, cardiac arrhythmia, and hemolytic anemia). On imaging studies, small-vessel brain disease is manifest as diffuse periventricular leukoencephalopathy, lacunar infarcts, microhemorrhage, dilated perivascular spaces, and deep intracerebral hemorrhages. Clinically, small-vessel brain disease manifests as infantile hemiparesis, seizures, single or recurrent hemorrhagic stroke, ischemic stroke, and isolated migraine with aura. Porencephaly (fluid-filled cavities in the brain detected by CT or MRI) is typically manifest as infantile hemiparesis, seizures, and intellectual disability; however, on occasion it can be an incidental finding. HANAC (hereditary angiopathy with nephropathy, aneurysms, and muscle cramps) syndrome usually associates asymptomatic small-vessel brain disease, cerebral large vessel involvement (i.e., aneurysms), and systemic findings involving the kidney, muscle, and small vessels of the eye. Two additional phenotypes include isolated retinal artery tortuosity and nonsyndromic autosomal dominant congenital cataract.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382033">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_388595"><div><strong>Progressive myoclonic epilepsy type 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>388595</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2673257</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mutations in the KCTD7 gene cause a severe neurodegenerative phenotype characterized by onset of intractable myoclonic seizures before age 2 years and accompanied by developmental regression. The initial description was consistent with a form of progressive myoclonic epilepsy (designated here as EPM3), whereas a later report identified intracellular accumulation of autofluorescent lipopigment storage material, consistent with neuronal ceroid lipofuscinosis (designated CLN14). Ultrastructural findings on skin biopsies thus appear to be variable. However, clinical features are generally consistent between reports (summary by Staropoli et al., 2012).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of progressive myoclonic epilepsy, see EPM1A (254800).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of neuronal ceroid lipofuscinosis, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/388595">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_435997"><div><strong>Hyperdibasic aminoaciduria type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>435997</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2673736</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hyperdibasic aminoaciduria, type 1 is characterized by increased renal clearance of lysine, ornithine and arginine, in the presence of normal concentrations of cystine. Heterozygous individuals are asymptomatic but homozygotes display intellectual deficit. To date, 25 heterozygotes and one homozygote have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/435997">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_393032"><div><strong>Bardet-Biedl syndrome 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>393032</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2673873</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">BBS13 is an autosomal recessive ciliopathy with features of obesity, polydactyly, and retinitis pigmentosa (Leitch et al., 2008; Xing et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/393032">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_393033"><div><strong>Bardet-Biedl syndrome 14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>393033</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2673874</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bardet-Biedl syndrome-14 (BBS14) is an autosomal recessive ciliopathy with features of retinitis pigmentosa, obesity, mental retardation, and renal disease (Leitch et al., 2008).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/393033">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_393098"><div><strong>Severe achondroplasia-developmental delay-acanthosis nigricans syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>393098</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2674173</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">SADDAN dysplasia (severe achondroplasia with developmental delay and acanthosis nigricans) is a very rare skeletal dysplasia characterized by the constellation of these features. Radiology reveals 'ram's horn' shaped clavicles and reverse bowing of lower limbs. Approximately half of patients die before the fourth week of life secondary to respiratory failure (summary by Zankl et al., 2008).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/393098">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_382398"><div><strong>Loeys-Dietz syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382398</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2674574</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Loeys-Dietz syndrome (LDS) is characterized by vascular findings (cerebral, thoracic, and abdominal arterial aneurysms and/or dissections), skeletal manifestations (pectus excavatum or pectus carinatum, scoliosis, joint laxity, arachnodactyly, talipes equinovarus, and cervical spine malformation and/or instability), craniofacial features (hypertelorism, strabismus, bifid uvula / cleft palate, and craniosynostosis that can involve any sutures), and cutaneous findings (velvety and translucent skin, easy bruising, and dystrophic scars). Individuals with LDS are predisposed to widespread and aggressive arterial aneurysms and pregnancy-related complications including uterine rupture and death. Individuals with LDS can show a strong predisposition for allergic/inflammatory disease including asthma, eczema, and reactions to food or environmental allergens. There is also an increased incidence of gastrointestinal inflammation including eosinophilic esophagitis and gastritis or inflammatory bowel disease. Wide variation in the distribution and severity of clinical features can be seen in individuals with LDS, even among affected individuals within a family who have the same pathogenic variant.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382398">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436265"><div><strong>Faciocardiomelic syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436265</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2674798</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436265">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436306"><div><strong>Distal 10q deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436306</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2674937</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">10q26 deletion syndrome is a condition that results from the loss (deletion) of a small piece of chromosome 10 in each cell. The deletion occurs on the long (q) arm of the chromosome at a position designated 10q26.\n\nThe signs and symptoms of 10q26 deletion syndrome vary widely, even among affected members of the same family. Among the more common features associated with this chromosomal change are distinctive facial features, mild to moderate intellectual disability, growth problems, and developmental delay. People with 10q26 deletion syndrome often have delayed development of speech and of motor skills such as sitting, crawling, and walking. Some have limited speech throughout life. Affected individuals may experience seizures, attention-deficit/hyperactivity disorder (ADHD), poor impulse control (impulsivity), or exhibit autistic behaviors that affect communication and social interaction.\n\nA range of facial features is seen in people with 10q26 deletion syndrome, but not all affected individuals have these features. Facial features of people with 10q26 deletion syndrome may include a prominent or beaked nose, a broad nasal bridge, a small jaw (micrognathia), malformed ears that are low set, a thin upper lip, and an unusually small head size (microcephaly). Many affected individuals have widely spaced eyes (hypertelorism) that do not look in the same direction (strabismus). Some people with this condition have a short neck with extra folds of skin (webbed neck).\n\nLess common signs and symptoms can occur in 10q26 deletion syndrome. Skeletal problems include a spine that curves to the side (scoliosis), limited movement in the elbows or other joints, or curved fifth fingers and toes (clinodactyly). Slow growth before and after birth can also occur in affected individuals. Males with this condition may have genital abnormalities, such as a small penis (micropenis), undescended testes (cryptorchidism), or the urethra opening on the underside of the penis (hypospadias). Some people with 10q26 deletion syndrome have kidney abnormalities, heart defects, breathing problems, recurrent infections, or hearing or vision problems.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436306">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_393265"><div><strong>Chromosome 3q29 microdeletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>393265</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2674949</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">3q29 recurrent deletion is characterized by neurodevelopmental and/or psychiatric manifestations including mild-to-moderate intellectual disability (ID), autism spectrum disorder (ASD), anxiety disorders, attention-deficit/hyperactivity disorder (ADHD), executive function deficits, graphomotor weakness, and psychosis/schizophrenia. Age at onset for psychosis or prodrome can be younger than the typical age at onset in the general population. Neurodevelopmental and psychiatric conditions are responsible for the majority of the disability associated with the 3q29 deletion. Other common findings are failure to thrive and feeding problems in infancy that persist into childhood, gastrointestinal disorders (including constipation and gastroesophageal reflux disease [GERD]), ocular issues, dental anomalies, and congenital heart defects (especially patent ductus arteriosus). Structural anomalies of the posterior fossa may be seen on neuroimaging. To date more than 200 affected individuals have been identified.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/393265">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436367"><div><strong>Arginine:glycine amidinotransferase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436367</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675179</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The creatine deficiency disorders (CDDs), inborn errors of creatine metabolism and transport, comprise three disorders: the creatine biosynthesis disorders guanidinoacetate methyltransferase (GAMT) deficiency and L-arginine:glycine amidinotransferase (AGAT) deficiency; and creatine transporter (CRTR) deficiency. Developmental delay and cognitive dysfunction or intellectual disability and speech-language disorder are common to all three CDDs. Onset of clinical manifestations of GAMT deficiency (reported in ~130 individuals) is between ages three months and two years; in addition to developmental delays, the majority of individuals have epilepsy and develop a behavior disorder (e.g., hyperactivity, autism, or self-injurious behavior), and about 30% have movement disorder. AGAT deficiency has been reported in 16 individuals; none have had epilepsy or movement disorders. Clinical findings of CRTR deficiency in affected males (reported in ~130 individuals) in addition to developmental delays include epilepsy (variable seizure types and may be intractable) and behavior disorders (e.g., attention deficit and/or hyperactivity, autistic features, impulsivity, social anxiety), hypotonia, and (less commonly) a movement disorder. Poor weight gain with constipation and prolonged QTc on EKG have been reported. While mild-to-moderate intellectual disability is commonly observed up to age four years, the majority of adult males with CRTR deficiency have been reported to have severe intellectual disability. Females heterozygous for CRTR deficiency are typically either asymptomatic or have mild intellectual disability, although a more severe phenotype resembling the male phenotype has been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436367">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436370"><div><strong>Microcephaly 7, primary, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436370</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675187</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive primary microcephaly (often shortened to MCPH, which stands for "microcephaly primary hereditary") is a condition in which infants are born with a very small head and a small brain. The term "microcephaly" comes from the Greek words for "small head."\n\nMCPH causes intellectual disability, which is typically mild to moderate and does not become more severe with age. Most affected individuals have delayed speech and language skills. Motor skills, such as sitting, standing, and walking, may also be mildly delayed.\n\nInfants with MCPH have an unusually small head circumference compared to other infants of the same sex and age. Head circumference is the distance around the widest part of the head, measured by placing a measuring tape above the eyebrows and ears and around the back of the head. Affected infants' brain volume is also smaller than usual, although they usually do not have any major abnormalities in the structure of the brain. The head and brain grow throughout childhood and adolescence, but they continue to be much smaller than normal.\n\nPeople with MCPH usually have few or no other features associated with the condition. Some have a narrow, sloping forehead; mild seizures; problems with attention or behavior; or short stature compared to others in their family. The condition typically does not affect any other major organ systems or cause other health problems.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436370">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_390767"><div><strong>15q11q13 microduplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>390767</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675336</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Maternal 15q duplication syndrome (maternal dup15q) is characterized by hypotonia and motor delays, intellectual disability, autism spectrum disorder (ASD), and epilepsy including infantile spasms. Rarely, maternal dup15q may also be associated with psychosis or sudden unexplained death. Those with a maternal isodicentric 15q11.2-q13.1 supernumerary chromosome are typically more severely affected than those with an interstitial duplication.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/390767">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436417"><div><strong>Chromosome 22q11.2 microduplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436417</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675369</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">22q11.2 duplication is a condition caused by an extra copy of a small piece of chromosome 22. The duplication occurs near the middle of the chromosome at a location designated q11.2.\n\nThe features of this condition vary widely, even among members of the same family. Affected individuals may have developmental delay, intellectual disability, slow growth leading to short stature, and weak muscle tone (hypotonia). Many people with the duplication have no apparent physical or intellectual disabilities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436417">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_390804"><div><strong>Chromosome 15q26-qter deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>390804</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675463</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Distal monosomy 15q is a rare chromosomal anomaly syndrome characterized by pre- and postnatal growth restriction, developmental delay, variable degrees of intellectual disability, hand and foot anomalies (e.g. brachy-/clinodactyly, talipes equinovarus, nail hypoplasia, proximally placed digits) and mild craniofacial dysmorphism (incl. microcephaly, triangular face, broad nasal bridge, micrognathia). Neonatal lymphedema, heart malformations, aplasia cutis congenita, aortic root dilatation, and autistic spectrum disorder have also been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/390804">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_382611"><div><strong>Intellectual disability, autosomal dominant 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382611</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675473</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">SYNGAP1-related intellectual disability (SYNGAP1-ID) is characterized by developmental delay (DD) or intellectual disability (ID) (100% of affected individuals), generalized epilepsy (~84%), and autism spectrum disorder (ASD) and other behavioral abnormalities (=50%). To date more than 50 individuals with SYNGAP1-ID have been reported. In the majority DD/ID was moderate to severe; in some it was mild. The epilepsy is generalized; a subset of individuals with epilepsy have myoclonic astatic epilepsy (Doose syndrome) or epilepsy with myoclonic absences. Behavioral abnormalities can include stereotypic behaviors (e.g., hand flapping, obsessions with certain objects) as well as poor social development. Feeding difficulties can be significant in some.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382611">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_393396"><div><strong>Chromosome 6pter-p24 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>393396</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675486</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Distal monosomy 6p is responsible for a distinct chromosome deletion syndrome with a recognizable clinical picture including intellectual deficit, ocular abnormalities, hearing loss, and facial dysmorphism.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/393396">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_393397"><div><strong>Intellectual disability, autosomal dominant 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>393397</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675487</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal dominant non-syndromic intellectual disability in which the cause of the disease is a mutation in the KIRREL3 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/393397">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436447"><div><strong>Intellectual disability, autosomal dominant 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436447</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675488</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal dominant non-syndromic intellectual disability in which the cause of the disease is a mutation in the CDH15 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436447">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_382676"><div><strong>Autosomal dominant deafness - onychodystrophy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382676</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675730</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The DDOD syndrome is characterized by autosomal dominant inheritance of congenital deafness and onychodystrophy. Conical, hypoplastic teeth is also a feature (Robinson et al., 1962).&#13; See also DOOR syndrome (220500), an autosomal recessive disorder, which includes congenital deafness, onychodystrophy, osteodystrophy, and mental retardation.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382676">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_382704"><div><strong>Chromosome 1q41-q42 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382704</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675857</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">1q41q42 microdeletion syndrome is a chromosomal anomaly characterized by a severe developmental delay and/or intellectual disability, typical facial dysmorphic features, brain anomalies, seizures, cleft palate, clubfeet, nail hypoplasia and congenital heart disease.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382704">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_390902"><div><strong>Chromosome 2p16.1-p15 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>390902</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675875</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Chromosome 2p16.1-p15 deletion syndrome is a neurodevelopmental disorder characterized by delayed psychomotor development, intellectual disability, and variable but distinctive dysmorphic features, including microcephaly, bitemporal narrowing, smooth and long philtrum, hypertelorism, downslanting palpebral fissures, broad nasal root, thin upper lip, and high palate. Many patients have behavioral disorders, including autistic features, as well as structural brain abnormalities, such as pachygyria or hypoplastic corpus callosum. Those with deletions including the BCL11A gene (606557) also have persistence of fetal hemoglobin (HbF), which is asymptomatic and does not affected hematologic parameters or susceptibility to infection (summary by Funnell et al., 2015).&#13; Point mutation in the BCL11A gene causes intellectual developmental disorder with persistence of fetal hemoglobin (617101), which shows overlapping features.&#13; See also fetal hemoglobin quantitative trait locus-5 (HBFQTL5; 142335).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/390902">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_393913"><div><strong>Chromosome 1q21.1 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>393913</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675897</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">The 1q21.1 recurrent deletion itself does not lead to a clinically recognizable syndrome, as some persons with the deletion have no obvious clinical findings. Others have variable findings that most commonly include mildly dysmorphic but nonspecific facial features (&gt;75%), mild intellectual disability or learning disabilities (25%), microcephaly (43%), and eye abnormalities (26%). Other findings can include cardiac defects, genitourinary anomalies, skeletal malformations, joint laxity, and seizures (~23%). Psychiatric and behavioral abnormalities can include autism spectrum disorder, attention-deficit/hyperactivity disorder, and sleep disturbances. Sensorineural hearing loss and recurrent infections /otitis media are rare.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/393913">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_382718"><div><strong>Wilms tumor, aniridia, genitourinary anomalies, intellectual disability, and obesity syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382718</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675904</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">For a detailed discussion of the WAGR syndrome, see 194072. In a subgroup of individuals with the WAGR syndrome, obesity develops. The phenotype in this subset is associated with haploinsufficiency for the BDNF gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382718">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_390966"><div><strong>Diamond-Blackfan anemia 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>390966</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2676137</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Diamond-Blackfan anemia (DBA) is characterized by a profound normochromic and usually macrocytic anemia with normal leukocytes and platelets, congenital malformations in up to 50%, and growth deficiency in 30% of affected individuals. The hematologic complications occur in 90% of affected individuals during the first year of life. The phenotypic spectrum ranges from a mild form (e.g., mild anemia or no anemia with only subtle erythroid abnormalities, physical malformations without anemia) to a severe form of fetal anemia resulting in nonimmune hydrops fetalis. DBA is associated with an increased risk for acute myelogenous leukemia (AML), myelodysplastic syndrome (MDS), and solid tumors including osteogenic sarcoma.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/390966">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_382795"><div><strong>Skeletal defects, genital hypoplasia, and intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382795</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2676231</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382795">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436642"><div><strong>Hypomyelinating leukodystrophy 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436642</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2676244</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">TUBB4A-related leukodystrophy comprises a phenotypic spectrum in which the MRI findings range from hypomyelination with atrophy of the basal ganglia and cerebellum (H-ABC) at the severe end to isolated hypomyelination at the mild end. Progressive neurologic findings reflect involvement of the pyramidal tracts (spasticity, brisk deep tendon reflexes, and Babinski sign), extrapyramidal system (rigidity, dystonia, choreoathetosis, oculogyric crisis, and perioral dyskinesia), cerebellum (ataxia, intention tremor, dysmetria), and bulbar function (dysarthria, dysphonia, and swallowing). Cognition is variably affected, usually less severely than motor function. Typically, those with H-ABC present in early childhood (ages 1-3 years) and those with isolated hypomyelination in later childhood or adulthood. The rate of progression varies with disease severity.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436642">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_382926"><div><strong>CHROMOSOME 1qter DELETION SYNDROME</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382926</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2676727</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382926">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436765"><div><strong>Chromosome 2q32-q33 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436765</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2676739</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SATB2-associated syndrome (SAS) is a multisystem disorder in which all affected individuals have developmental delay / intellectual disability that can range from mild to profound but is most commonly moderate to profound. Speech delay and/or absent speech is observed in all affected individuals. Other neurobehavioral manifestations can include jovial or friendly personality, autistic tendencies, agitation or aggressive outbursts, self-injury, impulsivity, hyperactivity, anxiety, difficulty falling asleep or maintaining sleep, and sensory issues. Most affected individuals have hypotonia. EEG abnormalities are frequent but may be without clinically recognizable seizures. While only about 20% of affected individuals have clinical seizures, a subset of affected individuals have electrical status epilepticus in sleep. Craniofacial findings can include nonspecific dysmorphic features, palatal anomalies (cleft palate, high-arched palate, velopharyngeal insufficiency, bifid uvula), and dental anomalies (abnormal shape or size or the upper central incisors, dental crowding, hypodontia, and delayed teeth eruption, among others). Skeletal anomalies can include scoliosis, tibial bowing, and joint contractures. At least one third of individuals have a history of previous fractures and about one quarter of affected individuals have documented low bone mineral density. Other finding can include pre- and postnatal growth restriction, feeding issues, and eye anomalies (strabismus, refractive error). In those with a larger deletion involving SATB2 and adjacent genes, cardiovascular, genitourinary, and ectodermal findings may also be present.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436765">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_393583"><div><strong>Birk-Barel syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>393583</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2676770</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">KCNK9 imprinting syndrome is characterized by congenital central hypotonia (manifest as decreased movement, lethargy, and weak cry), severe feeding difficulties (resulting from facial weakness and poor suck), delayed development/intellectual disability, and dysmorphic manifestations. Poor feeding can cause failure to thrive during infancy unless managed appropriately. Significant dysphagia of solid foods typically persists until puberty. Intellectual disability can be severe. To date 19 individuals with a molecularly confirmed diagnosis have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/393583">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436772"><div><strong>Joubert syndrome 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436772</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2676771</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436772">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_382940"><div><strong>Joubert syndrome 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382940</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2676788</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382940">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_394313"><div><strong>ANE syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>394313</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2677535</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Alopecia, neurologic defects, and endocrinopathy syndrome (ANES) is an autosomal recessive disorder characterized by alopecia with skin involvement including multiple facial nevi and flexural hyperpigmentation; moderately to severely impaired intellectual development; progressive motor decline; and endocrine deficiency (summary by Spiegel et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/394313">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436985"><div><strong>Autosomal recessive ataxia due to ubiquinone deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436985</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2677589</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Primary coenzyme Q10 deficiency-4 (COQ10D4) is an autosomal recessive disorder characterized by childhood-onset of cerebellar ataxia and exercise intolerance. Some affected individuals develop seizures and have mild mental impairment, indicating variable severity. Oral coenzyme Q10 supplementation does not result in significant improvement of neurologic symptoms (summary by Mollet et al., 2008 and Lagier-Tourenne et al., 2008).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of primary coenzyme Q10 deficiency, see COQ10D1 (607426).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436985">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_383183"><div><strong>Stevenson-Carey syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>383183</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2677763</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/383183">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_394715"><div><strong>Intellectual disability, X-linked 95</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>394715</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2678034</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/394715">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_395523"><div><strong>Syndromic X-linked intellectual disability Shrimpton type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>395523</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2678039</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">An X-linked syndromic intellectual disability characterised by severe intellectual disability, microcephaly and short stature in male patients. Strabismus and spastic diplegia have also been described.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/395523">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_394425"><div><strong>Intellectual disability, X-linked syndromic, Turner type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>394425</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2678046</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Turner-type X-linked syndromic intellectual developmental disorder (MRXST) is a neurodevelopmental disorder with a highly variable phenotype. Some affected families show X-linked recessive inheritance, with only males being affected and carrier females having no abnormal findings. In other affected families, males are severely affected, and female mutation carriers show milder cognitive abnormalities or dysmorphic features. In addition, there are female patients with de novo mutations who show the full phenotype, despite skewed X-chromosome inactivation. Affected individuals show global developmental delay from infancy, with variably impaired intellectual development and poor or absent speech, often with delayed walking. Dysmorphic features are common and can include macrocephaly, microcephaly, deep-set eyes, hypotelorism, small palpebral fissures, dysplastic, large, or low-set ears, long face, bitemporal narrowing, high-arched palate, thin upper lip, and scoliosis or mild distal skeletal anomalies, such as brachydactyly or tapered fingers. Males tend to have cryptorchidism. Other features, such as hypotonia, seizures, and delayed bone age, are more variable (summary by Moortgat et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/394425">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_394718"><div><strong>X-linked non progressive cerebellar ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>394718</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2678048</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked non progressive cerebellar ataxia is a rare hereditary ataxia characterized by delayed early motor development, severe neonatal hypotonia, non-progressive ataxia and slow eye movements, presenting normal cognitive abilities and absence of pyramidal signs. Frequently patients also manifest intention tremor, mild dysphagia, and dysarthria. Brain MRI reveals global cerebellar atrophy with absence of other malformations or degenerations of the central and peripheral nervous systems.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/394718">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_437111"><div><strong>Syndromic X-linked intellectual disability 94</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>437111</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2678051</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A syndromic X-linked intellectual disability characterized by moderate intellectual disability with variable occurrence of asthenic body habitus, dysmorphic features, autistic features, macrocephaly, seizures, myoclonic jerks, and hyporeflexia that has material basis in mutation in the GRIA3 gene on chromosome Xq25.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/437111">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_395592"><div><strong>3M syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>395592</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2678312</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">3-M syndrome is characterized by severe pre- and postnatal growth deficiency (final height five standard deviations below the mean), characteristic facies (relative macrocephaly, dolichocephaly, triangular face, midface retrusion, thick eyebrows, fleshy nasal tip, long philtrum, thick vermilion of the upper and low lips, and pointed chin), and normal intelligence. Additional features of 3-M syndrome include short, broad neck, prominent trapezii, pectus carinatum/excavatum, short thorax, square shoulders, winged scapulae, thoracic kyphoscoliosis, hyperlordosis, spina bifida occulta, clinodactyly of the fifth fingers, generalized or distal joint hypermobility, dislocated hips, prominent heels, and pes planus. Males with 3-M syndrome can have hypogonadism and occasionally hypospadias.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/395592">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_398476"><div><strong>Waardenburg syndrome type 2E</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>398476</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2700405</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Waardenburg syndrome type 2 (WS2) is an auditory-pigmentary syndrome characterized by pigmentary abnormalities of the hair, skin, and eyes; congenital sensorineural hearing loss; and the absence of 'dystopia canthorum,' the lateral displacement of the inner canthus of each eye, which is seen in some other forms of WS (review by Read and Newton, 1997). Individuals with WS type 2E (WS2E) may have neurologic abnormalities, including mental impairment, myelination defects, and ataxia.&#13; Waardenburg syndrome type 2 is genetically heterogeneous (see WS2A, 193510). For a description of other clinical variants of Waardenburg syndrome, see WS1 (193500), WS3 (148820), and WS4 (277580).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/398476">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_411554"><div><strong>Paraplegia-intellectual disability-hyperkeratosis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>411554</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2745996</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">This syndrome has characteristics of intellectual deficit, spasticity in the lower limbs (spastic paraplegia), pes cavus deformity of both feet, an abnormal gait, and palmar and plantar hyperkeratosis. It has been reported in four brothers. The mother of the affected boys had normal intelligence, plantar hyperkeratosis and a strong facial resemblance to her retarded sons. Her three daughters were normal. This syndrome most likely an X-linked recessive condition.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/411554">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_411200"><div><strong>Orofaciodigital syndrome type 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>411200</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2745997</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Orofaciodigital syndrome type VI (OFD6), or Varadi syndrome, is a rare autosomal recessive disorder distinguished from other orofaciodigital syndromes by metacarpal abnormalities with central polydactyly and by cerebellar abnormalities, including the molar tooth sign (summary by Doss et al., 1998 and Lopez et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/411200">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_411243"><div><strong>EAST syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>411243</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2748572</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome with characteristics of seizures, sensorineural deafness, ataxia, intellectual deficit, and electrolyte imbalance. It has been described in five patients from four families. The disease is caused by homozygous or compound heterozygous mutations in the KCNJ10 gene, encoding a potassium channel expressed in the brain, spinal cord, inner ear and kidneys. Transmission is autosomal recessive.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/411243">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_440689"><div><strong>Intellectual disability, X-linked 97</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>440689</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2749020</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the ZNF711 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/440689">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_440690"><div><strong>Chromosome Xp11.23-p11.22 duplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>440690</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2749022</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Familial and &lt;i&gt;de novo&lt;/i&gt; recurrent Xp11.22-p11.23 microduplication has been recently identified in males and females.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/440690">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_440765"><div><strong>Peroxisome biogenesis disorder 9B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>440765</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2749346</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Adult Refsum disease (ARD is associated with elevated plasma phytanic acid levels, late childhood-onset (or later) retinitis pigmentosa, and variable combinations of anosmia, polyneuropathy, deafness, ataxia, and ichthyosis. Onset of symptoms ranges from age seven months to older than age 50 years. Cardiac arrhythmia and heart failure caused by cardiomyopathy are potentially severe health problems that develop later in life.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/440765">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_412815"><div><strong>Mitochondrial DNA depletion syndrome 8a</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>412815</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2749861</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Four phenotypes comprise the RRM2B mitochondrial DNA maintenance defects (RRM2B-MDMDs): RRM2B encephalomyopathic MDMD, the most severe phenotype, usually manifesting shortly after birth as hypotonia, poor feeding, and faltering growth requiring hospitalization. Subsequent assessments are likely to reveal multisystem involvement including sensorineural hearing loss, renal tubulopathy, and respiratory failure. Autosomal dominant progressive external ophthalmoplegia (adPEO), typically adult onset; other manifestations can include ptosis, bulbar dysfunction, fatigue, and muscle weakness. RRM2B autosomal recessive progressive external ophthalmoplegia (arPEO), a typically childhood-onset predominantly myopathic phenotype of PEO, ptosis, proximal muscle weakness, and bulbar dysfunction. RRM2B mitochondrial neurogastrointestinal encephalopathy (MNGIE)-like, characterized by progressive ptosis, ophthalmoplegia, gastrointestinal dysmotility, cachexia, and peripheral neuropathy. To date, 78 individuals from 52 families with a molecularly confirmed RRM2B-MDMD have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/412815">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_440897"><div><strong>Chromosome 3q29 microduplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>440897</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2749873</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">3q29 microduplication syndrome (also known as 3q29 duplication syndrome) is a condition that results from the copying (duplication) of a small piece of chromosome 3 in each cell. The duplication occurs on the long (q) arm of the chromosome at a position designated q29.\n\nThe features associated with 3q29 microduplication syndrome vary widely. Some individuals with this chromosomal change have very mild or no related signs and symptoms, and the duplication is discovered because they undergo genetic testing only after a family member is diagnosed. Other people with a 3q29 microduplication have delayed development (particularly speech delay) and intellectual disability or learning difficulties. Although most affected individuals have no major birth defects, eye abnormalities, heart defects, and an unusually small head (microcephaly) can occur. 3q29 microduplication syndrome may increase the likelihood of being overweight or having obesity, although it is hard to determine whether these weight issues are caused by the duplication.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/440897">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_442343"><div><strong>Hereditary spastic paraplegia 18</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>442343</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2749936</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia-18B (SPG18B) is a severe autosomal recessive neurologic disorder characterized by onset in early childhood of progressive spastic paraplegia resulting in motor disability. Most affected individuals have severe psychomotor retardation. Some may develop significant joint contractures (summary by Alazami et al., 2011 and Yildirim et al., 2011).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/442343">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_413258"><div><strong>Cortical dysplasia-focal epilepsy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>413258</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2750246</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pitt-Hopkins-like syndrome-1 (PTHSL1) is an autosomal recessive neurodevelopmental disorder characterized by delayed psychomotor development, intellectual disability, severe speech impairment or regression, and behavioral abnormalities. Most patients have onset of seizures within the first years of life. Some patients may have cortical dysplasia on brain imaging (summary by Smogavec et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/413258">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_412956"><div><strong>Fibrosis of extraocular muscles, congenital, 3c</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>412956</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2750404</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/412956">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_413044"><div><strong>Congenital muscular dystrophy due to integrin alpha-7 deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>413044</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2750786</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic congenital muscular dystrophy due to extracellular matrix protein anomaly. The disease has characteristics of early motor development delay and muscle weakness with mild elevation of serum creatine kinase that may be followed by progressive disease course with predominantly proximal muscle weakness and atrophy, motor development regress, scoliosis and respiratory insufficiency. There is evidence this disease is caused by compound heterozygous mutation in the ITGA7 gene on chromosome 12q13.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/413044">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_442564"><div><strong>Intellectual disability, autosomal recessive 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>442564</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2750791</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the TRAPPC9 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/442564">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_416385"><div><strong>Chromosome 5p13 duplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>416385</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2750805</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare partial autosomal trisomy/tetrasomy characterized by global developmental delay, intellectual disability, autistic behavior, muscular hypotonia, macrocephaly and facial dysmorphism (frontal bossing, short palpebral fissures, low set, dysplastic ears, short or shallow philtrum, high arched or narrow palate, micrognathia). Other associated clinical features include sleep disturbances, seizures, aplasia/hypoplasia of the corpus callosum, skeletal abnormalities (large hands and feet, long fingers and toes, talipes).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/416385">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_413424"><div><strong>Epilepsy, idiopathic generalized, susceptibility to, 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>413424</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2750887</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">For a general phenotypic description and a discussion of genetic heterogeneity of idiopathic generalized epilepsy, see 600669. Juvenile myoclonic epilepsy is a subtype of idiopathic generalized epilepsy; see 254770 for a general phenotypic description and a discussion of genetic heterogeneity of JME.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/413424">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_442700"><div><strong>Nijmegen breakage syndrome-like disorder</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>442700</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2751318</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nijmegen breakage syndrome-like disorder (NBSLD) is an autosomal recessive disorder characterized by severe prenatal growth retardation and persistent postnatal growth restriction, congenital microcephaly, borderline to mildly impaired intellectual development, normal sexual development, and radioresistant DNA synthesis with no immunodeficiency, myelodysplasia, or early neurodegeneration (summary by Ragamin et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/442700">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_442763"><div><strong>Cerebral folate transport deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>442763</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2751584</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">FOLR1-related cerebral folate transport deficiency (FOLR1-CFTD), resulting from loss of function of the folate receptor alpha (FOLR1) protein, causes cerebral folate deficiency in the absence of systemic folate deficiency. Individuals with untreated FOLR1-CFTD have very low cerebrospinal fluid (CSF) levels and progressive neurologic deterioration with developmental delays and progressive cognitive impairment, behavioral issues, seizures, and movement disorders that may progress to immobility. Despite these incapacitating neurologic findings, untreated individuals can live well into adulthood. Treatment with 5-formyltetrahydrofolate (5-formylTHF; also known as folinic acid or leucovorin) can result in substantial improvement in neurologic findings when started at a young age. Treatment of asymptomatic or mildly symptomatic younger sibs at the time of diagnosis of their older sibs can either prevent the neurologic signs of this disorder or result in marked or complete regression of the neurologic findings.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/442763">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_414421"><div><strong>Pituitary hormone deficiency, combined, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>414421</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2751608</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Combined pituitary hormone deficiency (CPHD) in man denotes impaired production of growth hormone (GH; 139250) and one or more of the other 5 anterior pituitary hormones. Mutations of the POU1F1 gene in the human and Pit1 in the mouse are responsible for pleiotropic deficiencies of GH, prolactin (PRL; 176760), and thyroid-stimulating hormone (TSH; see 188540), while the production of adrenocorticotrophic hormone (ACTH; see 176830), luteinizing hormone (LH; 152780), and follicle-stimulating hormone (FSH; 136530) are preserved (Wu et al., 1998). Some patients exhibit only GH deficiency, although approximately 50% of isolated GH deficiency progresses to CPHD (Gergics et al., 2021). In infancy severe growth deficiency from birth as well as distinctive facial features with prominent forehead, marked midfacial hypoplasia with depressed nasal bridge, deep-set eyes, and a short nose with anteverted nostrils and hypoplastic pituitary gland by MRI examination can be seen (Aarskog et al., 1997). Some cases present with severe mental retardation along with short stature (Radovick et al., 1992).&#13; Reviews&#13; Voss and Rosenfeld (1992) reviewed the development and differentiation of the 5 pituitary cell types: galactotropes, gonadotropes, corticotropes, thyrotropes, and somatotropes. As indicated by the mutations in PIT1 described later, combined pituitary hormone deficiency can have either autosomal dominant or autosomal recessive inheritance, depending on the part of the PIT1 molecule affected by the mutation. Some mutations have a dominant-negative effect.&#13; Genetic Heterogeneity of Combined Pituitary Hormone Deficiency&#13; CPHD2 (262600), associated with hypogonadism, is caused by mutation in the PROP1 gene (601538). CPHD3 (221750), which is associated with rigid cervical spine and variable sensorineural deafness, is caused by mutation in the LHX3 gene (600577). CPHD4 (262700) is caused by mutation in the LHX4 gene (602146). CPHD5 (see septooptic dysplasia, 182230) is caused by mutation in the HESX1 gene (601802). CPHD6 (613986) is caused by mutation in the OTX2 gene (600037). CPHD7 (618160) is caused by mutation in the RNPC3 gene (618016). CPHD8 (620303) is caused by mutation in the ROBO1 gene (602430).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/414421">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_416638"><div><strong>Immunodeficiency 83, susceptibility to viral infections</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>416638</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2751803</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Immunodeficiency-83 (IMD83) is characterized by increased susceptibility to severe viral infections, including herpes simplex virus (HSV), varicella zoster virus (VZV), influenza A virus (IAV), hantavirus, and possibly respiratory syncytial virus (RSV). The age at onset varies widely from infancy to adulthood, and there is incomplete penetrance. The susceptibility to encephalitis or pneumonitis appears to result from impaired TLR3-dependent interferon production by nonhematopoietic cells that reside within the central nervous system (CNS) or lung epithelial cells (review by Zhang et al., 2013; summary by Mork et al., 2015; Sironi et al., 2017, Lim et al., 2019, Partanen et al., 2020).&#13; For a general phenotypic description of herpes simplex encephalitis (HSE) and a discussion of genetic heterogeneity of acute infection-induced encephalopathy, see 610551.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/416638">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_414129"><div><strong>Microcephaly-facio-cardio-skeletal syndrome, Hadziselimovic type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>414129</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2751878</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare syndrome with characteristics of pre-natal onset growth retardation (low birth weight and short stature), hypotonia, developmental delay and intellectual disability associated with microcephaly and craniofacial (low anterior hairline, hypotelorism, thick lips with carp-shaped mouth, high-arched palate, low-set ears), cardiac (conotruncal heart malformations such as tetralogy of Fallot) and skeletal (hypoplastic thumbs and first metacarpals) abnormalities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/414129">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_414526"><div><strong>Autosomal recessive cutis laxa type 2B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>414526</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2751987</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The phenotype of autosomal recessive cutis laxa type II (ARCL2) includes cutis laxa of variable severity, abnormal growth, developmental delay, and associated skeletal abnormalities (summary by Morava et al., 2009). No specific clinical features distinguish ARCL2A (219200), which includes a glycosylation defect, and ARCL2B, in which abnormal glycosylation has not been reported (Morava et al., 2009; Guernsey et al., 2009).&#13; For a phenotypic description and discussion of genetic heterogeneity of autosomal recessive cutis laxa, see ARCL1A (219100).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/414526">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_416693"><div><strong>Zechi-Ceide syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>416693</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2752047</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic multiple congenital anomalies/dysmorphic syndrome with characteristics of occipital atretic cephalocele associated with a specific facial dysmorphism (consisting of prominent forehead, narrow palpebral fissures, midface deficiency, narrow, malformed ears, broad nose and nasal root, grooved nasal tip and columella, laterally angulated, hypoplastic nares, short philtrum, thin upper lip, clift lip/palate, severe oligodontia, prominent chin) and large feet with sandal gap. Intellectual disability, developmental delay and hypoplastic finger and toenails have also been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/416693">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_416694"><div><strong>Orofaciodigital syndrome XI</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>416694</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2752048</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An extremely rare, sporadic form of Orofaciodigital syndrome with only a few reported cases and characteristics of facial (blepharophimosis, bulbous nasal tip, broad nasal bridge, downslanting palpebral fissures and low set ears) and skeletal (post-axial polydactyly and fusion of vertebrae) malformations along with severe intellectual disability, deafness and congenital heart defects.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/416694">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_442880"><div><strong>Cerebral palsy, spastic quadriplegic, 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>442880</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2752061</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebral palsy (CP) is defined as a nonprogressive but not unchanging disorder of posture or movement, caused by an abnormality of the brain and first evident at the stage of rapid brain development (Hughes and Newton, 1992). Cerebral palsy can be classified according to the type of movement disorder: spastic cerebral palsy accounts for approximately 60% of cases and can be subdivided into hemiplegic, diplegic, quadriplegic, and monoplegic types, whereas other forms include athetoid/dyskinetic, ataxic (605388), and mixed (Gustavson et al., 1969).&#13; Genetic Heterogeneity of Spastic Quadriplegic Cerebral Palsy&#13; See also CPSQ3 (617008), caused by mutation in the ADD3 gene (601568) on 10q24.&#13; Related phenotypes that were formerly classified in the CPSQ series include spastic paraplegia-47 (SPG47; 614066), spastic paraplegia-50 (SPG50; 612936), spastic paraplegia-51 (SPG51; 613744), spastic paraplegia-52 (SPG52; 614067), and neurodevelopmental disorder with progressive spasticity and brain white matter abnormalities (NEDSWMA; 619026).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/442880">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_473687"><div><strong>Hereditary spastic paraplegia 46</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>473687</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2828721</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spastic paraplegia-46 (SPG46) is a neurodegenerative disorder characterized by onset in childhood of slowly progressive spastic paraplegia and cerebellar signs. Some patients have cognitive impairment, cataracts, and cerebral, cerebellar, and corpus callosum atrophy on brain imaging (summary by Boukhris et al., 2010 and Martin et al., 2013).&#13; For a discussion of genetic heterogeneity of autosomal recessive spastic paraplegia, see SPG5A (270800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/473687">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_418932"><div><strong>Ramos-Arroyo syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>418932</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2930866</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An extremely rare genetic disorder characterized by corneal anesthesia, retinal abnormalities, bilateral hearing loss, distinct facies, patent ductus arteriosus, Hirschsprung disease, short stature and intellectual disability. The phenotype is variable. Some affected individuals have only mild disease manifestations. The etiology of this syndrome is not yet known. Mutations in an as of yet unidentified gene, involved in autonomic nervous system function, are suspected. Follows an autosomal dominant pattern of inheritance, probably with variable expressivity.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/418932">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419284"><div><strong>Ring chromosome 14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419284</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2930916</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ring chromosome 14 syndrome is characterized by early-onset epilepsy, developmental delay with impaired intellectual development and poor speech, microcephaly, and dysmorphic facial features. Additional variable features include hypotonia and retinopathy (summary by Imataka et al., 2013 and Giovannini et al., 2013).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419284">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_443944"><div><strong>Odontotrichomelic syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>443944</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2930960</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic disease characterized by intellectual disability, growth delay, absence deformities of upper and lower limbs, hypotrichosis, hypoplastic nails, abnormal dentition, abnormal auricles, hypoplastic nipples, thyroid enlargement, and abnormalities of tyrosine and/or tryptophane metabolism. Hypogonadism and cleft lip have also been reported. No new cases have been confirmed since 1970.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/443944">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419694"><div><strong>DPAGT1-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419694</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931004</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Like all CDGs, which are caused by a shortage of precursor monosaccharide phosphate or deficiencies in the glycosyltransferases required for lipid-linked oligosaccharide precursor (LLO) synthesis, CDG Ij is caused by a defect in the formation of DPAGT1, the first dolichyl-linked intermediate of the protein N-glycosylation pathway.&#13; For a general discussion of CDGs, see CDG1A (212065).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419694">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_443955"><div><strong>ALG9 congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>443955</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931006</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital disorders of glycosylation (CDGs) that represent defects of dolichol-linked oligosaccharide assembly are classified as CDG type I. For a general description and a discussion of the classification of CDGs, see CDG1A (212065).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/443955">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419309"><div><strong>STT3B-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419309</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931007</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital disorder of glycosylation type Ix (CDG1X) is a rare autosomal recessive disorder of protein glycosylation. Clinical features include hypotonia, developmental delay, seizures and respiratory difficulties (Shrimal et al., 2013; Kilic and Akkus, 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419309">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419314"><div><strong>Split hand-foot malformation 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419314</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931019</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Split-hand/foot malformation (SHFM) is a limb malformation involving the central rays of the autopod and presenting with syndactyly, median clefts of the hands and feet, and aplasia and/or hypoplasia of the phalanges, metacarpals, and metatarsals. Some patients with SHFM1 have been found to have mental retardation, ectodermal and craniofacial findings, orofacial clefting (Elliott and Evans, 2006), and neurosensory hearing loss (Tackels-Horne et al., 2001).&#13; Genetic Heterogeneity of Split-Hand/Foot Malformation&#13; Additional SHFM loci include SHFM2 (313350) on chromosome Xq26; SHFM3 (246560), caused by duplication of chromosome 10q24; SHFM4 (605289), caused by mutation in the TP63 gene (603273) on chromosome 3q28; SHFM5 (606708) on chromosome 2q31; and SHFM6 (225300), caused by mutation in the WNT10B gene (601906) on chromosome 12q13.&#13; Also see SHFM1D (220600) for a form of SHFM1 with deafness that may be caused by homozygous mutation in the DLX5 gene (600028).&#13; Associations Pending Confirmation&#13; For discussion of a possible association between split-hand/foot malformation and variation in the EPS15L1 gene, see 616826.0001.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419314">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_443983"><div><strong>Clark-Baraitser syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>443983</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931130</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic multiple congenital anomalies/dysmorphic syndrome characterised by intellectual disability, obesity, macrocephaly, behavioural abnormalities (such as aggressive tantrums and autistic-like behaviour), and delayed speech development. Dysmorphic facial features include large, square forehead, prominent supraorbital ridges, broad nasal tip, large ears, prominent lower lip, and minor dental anomalies such as small upper lateral incisors and central incisor gap.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/443983">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_443986"><div><strong>Morquio syndrome C</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>443986</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931140</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Morquio syndrome is an autosomal recessive mucopolysaccharidosis characterized by short trunk dwarfism, fine corneal opacities, skeletal changes, and normal intelligence.&#13; Morquio syndromes A (MPS4A; 253000) and B (MPS4B; 253010) are caused by mutations in the N-acetylglucosamine-6-sulfate sulfatase (GALNS; 612222) and beta-galactosidase (GLB1; 611458) genes, respectively. MPS4A and MPS4B are characterized biochemically by increased urinary excretion of keratan sulfate (Beck et al., 1986).&#13; There is some evidence of an additional form of Morquio syndrome, referred to here as type C, in which urinary excretion of keratan sulfate is absent. However, McKusick (1972) suggested that the nonkeratosulfate- excreting Morquio syndrome may be allelic to other forms of Morquio syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/443986">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419735"><div><strong>Nephropathic cystinosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419735</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931187</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cystinosis comprises three allelic phenotypes: Nephropathic cystinosis in untreated children is characterized by renal Fanconi syndrome, poor growth, hypophosphatemic/calcipenic rickets, impaired glomerular function resulting in complete glomerular failure, and accumulation of cystine in almost all cells, leading to cellular dysfunction with tissue and organ impairment. The typical untreated child has short stature, rickets, and photophobia. Failure to thrive is generally noticed after approximately age six months; signs of renal tubular Fanconi syndrome (polyuria, polydipsia, dehydration, and acidosis) appear as early as age six months; corneal crystals can be present before age one year and are always present after age 16 months. Prior to the use of renal transplantation and cystine-depleting therapy, the life span in nephropathic cystinosis was no longer than ten years. With these interventions, affected individuals can survive at least into the mid-forties or fifties with satisfactory quality of life. Intermediate cystinosis is characterized by all the typical manifestations of nephropathic cystinosis, but onset is at a later age. Renal glomerular failure occurs in all untreated affected individuals, usually between ages 15 and 25 years. The non-nephropathic (ocular) form of cystinosis is characterized clinically only by photophobia resulting from corneal cystine crystal accumulation.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419735">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_444003"><div><strong>Tetraamelia with ectodermal dysplasia and lacrimal duct abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>444003</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931214</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/444003">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419753"><div><strong>Craniometaphyseal dysplasia, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419753</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931244</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Craniometaphyseal dysplasia is an osteochondrodysplasia characterized by hyperostosis and sclerosis of the craniofacial bones associated with abnormal modeling of the metaphyses. Sclerosis of the skull may lead to asymmetry of the mandible, as well as to cranial nerve compression, that may finally result in hearing loss and facial palsy (summary by Nurnberg et al., 1997).&#13; The delineation of separate autosomal dominant (CMDD; 123000) and autosomal recessive forms of CMD by Gorlin et al. (1969) was confirmed by reports that made it evident that the dominant form is relatively mild and comparatively common, whereas the recessive form is rare, severe, and possibly heterogeneous.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419753">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419026"><div><strong>Leber congenital amaurosis 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419026</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931258</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Leber congenital amaurosis, also known as LCA, is an eye disorder that is present from birth (congenital). This condition primarily affects the retina, which is the specialized tissue at the back of the eye that detects light and color. People with this disorder typically have severe visual impairment beginning at birth or shortly afterward. The visual impairment tends to be severe and may worsen over time.\n\nLeber congenital amaurosis is also associated with other vision problems, including an increased sensitivity to light (photophobia), involuntary movements of the eyes (nystagmus), and extreme farsightedness (hyperopia). The pupils, which usually expand and contract in response to the amount of light entering the eye, do not react normally to light. Instead, they expand and contract more slowly than normal, or they may not respond to light at all.\n\nA specific behavior called Franceschetti's oculo-digital sign is characteristic of Leber congenital amaurosis. This sign consists of affected individuals poking, pressing, and rubbing their eyes with a knuckle or finger. Poking their eyes often results in the sensation of flashes of light called phosphenes. Researchers suspect that this behavior may contribute to deep-set eyes in affected children.\n\nIn very rare cases, delayed development and intellectual disability have been reported in people with the features of Leber congenital amaurosis. Because of the visual loss, affected children may become isolated. Providing children with opportunities to play, hear, touch, understand and other early educational interventions may prevent developmental delays in children with Leber congenital amaurosis.\n\nAt least 20 genetic types of Leber congenital amaurosis have been described. The types are distinguished by their genetic cause, patterns of vision loss, and related eye abnormalities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419026">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419089"><div><strong>Neurofibromatosis-Noonan syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419089</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931482</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A variant of neurofibromatosis type 1 characterized by the combination of features of neurofibromatosis type 1, such as café-au-lait spots, iris Lisch nodules, axillary and inguinal freckling, optic nerve glioma and multiple neurofibromas; and Noonan syndrome, with features such as short stature, typical facial features, congenital heart defects and unusual pectus deformity.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419089">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_444070"><div><strong>Intellectual disability, X-linked 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>444070</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931498</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic syndromic intellectual disability disorder with characteristics of severe intellectual disability, non-inherited progressive post-natal microcephaly, hypotonia, hyperkinesia, absence of speech, strabismus, and midline stereotypic hand movements (for example hand washing/rubbing). Additional features include developmental delay, seizures and behavioural disturbances, such as self-injury and unexplained crying episodes.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/444070">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419137"><div><strong>Myotonic dystrophy type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419137</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931689</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Myotonic dystrophy type 2 (DM2) is characterized by myotonia and muscle dysfunction (proximal and axial weakness, myalgia, and stiffness), and less commonly by posterior subcapsular cataracts, cardiac conduction defects, insulin-insensitive type 2 diabetes mellitus, and other endocrine abnormalities. While myotonia (involuntary muscle contraction with delayed relaxation) has been reported during the first decade, onset is typically in the third to fourth decade, most commonly with fluctuating or episodic muscle pain that can be debilitating and proximal and axial weakness of the neck flexors and the hip flexors. Subsequently, weakness occurs in the elbow extensors and finger flexors. Facial weakness and weakness of the ankle dorsiflexors are less common. Myotonia rarely causes severe symptoms. In a subset of individuals, calf hypertrophy in combination with brisk reflexes is notable.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419137">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419169"><div><strong>Chromosome 2q37 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419169</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931817</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Patients with chromosome 2q37 deletion syndrome show highly variable clinical manifestations likely resulting from different deletion sizes and deletions of different genes. Variable clinical features included brachydactyly type E (BDE), affecting the metacarpals and metatarsals (in about 50% of patients), short stature, mild to moderate intellectual disability, behavioral abnormalities, and dysmorphic facial features. However, many individuals with deletions do not show cognitive deficits (summary by Villavicencio-Lorini et al., 2013, Wheeler et al., 2014, Jean-Marcais et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419169">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419505"><div><strong>Hyperinsulinemic hypoglycemia, familial, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419505</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931832</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Familial hyperinsulinism, also referred to as congenital hyperinsulinism, nesidioblastosis, or persistent hyperinsulinemic hypoglycemia of infancy (PPHI), is the most common cause of persistent hypoglycemia in infancy and is due to defective negative feedback regulation of insulin secretion by low glucose levels. Unless early and aggressive intervention is undertaken, brain damage from recurrent episodes of hypoglycemia may occur (Thornton et al., 1998).&#13; Genetic Heterogeneity of Hyperinsulinemic Hypoglycemia&#13; HHF2 (601820) is caused by mutation in the KCNJ11 gene (600937) on chromosome 11p15. HHF3 (602485) is caused by mutation in the glucokinase gene (GCK; 138079) on chromosome 7p13. HHF4 (609975) is caused by mutation in the HADH gene (601609) on chromosome 4q25. HHF5 (609968) is caused by mutation in the insulin receptor gene (INSR; 147670) on chromosome 19p13. HHF6 (606762) is caused by mutation in the GLUD1 gene (138130) on chromosome 10q23. HHF7 (610021) is caused by mutation in the SLC16A1 (600682) on chromosome 1p13. There is evidence of further genetic heterogeneity of HHF.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419505">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419175"><div><strong>Hyperprolinemia type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419175</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931835</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hyperprolinemia type II (HYRPRO2) is an inherited abnormality in amino acid metabolism characterized by elevated plasma proline concentrations, iminoglycinuria, and the urinary excretion of delta-1-pyrroline compounds (summary by Valle et al., 1976).&#13; For a discussion of genetic heterogeneity of hyperprolinemia, see HYRPRO1 (239500).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419175">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419177"><div><strong>Familial hypertryptophanemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419177</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931837</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital hypertryptophanemia, which is accompanied by hyperserotonemia, does not appear to have significant clinical consequences (Ferreira et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419177">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419518"><div><strong>Leigh syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419518</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2931891</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Leigh syndrome is a clinical diagnosis based primarily on characteristic brain imaging findings associated with progressive and severe neurodegenerative features with onset within the first months or years of life, sometimes resulting in early death. Affected individuals usually show global developmental delay or developmental regression, hypotonia, ataxia, dystonia, and ophthalmologic abnormalities, such as nystagmus or optic atrophy. The neurologic features are associated with the classic findings of T2-weighted hyperintensities in the basal ganglia and/or brainstem on brain imaging. Leigh syndrome can also have detrimental multisystemic affects on the cardiac, hepatic, gastrointestinal, and renal organs. Biochemical studies in patients with Leigh syndrome tend to show increased lactate and abnormalities of mitochondrial oxidative phosphorylation (summary by Lake et al., 2015).&#13; Genetic Heterogeneity of Nuclear Leigh Syndrome&#13; Leigh syndrome is a presentation of numerous genetic disorders resulting from defects in the mitochondrial OXPHOS complex. Accordingly, the genes implicated in Leigh syndrome most commonly encode structural subunits of the OXPHOS complex or proteins required for their assembly, stability, and activity. Mutations in both nuclear and mitochondrial genes have been identified. For a discussion of genetic heterogeneity of mitochondrial Leigh syndrome, see MILS (500017).&#13; Nuclear Leigh syndrome can be caused by mutations in nuclear-encoded genes involved in any of the mitochondrial respiratory chain complexes: complex I deficiency (see 252010), complex II deficiency (see 252011), complex III deficiency (see 124000), complex IV deficiency (cytochrome c oxidase; see 220110), and complex V deficiency (see 604273) (summary by Lake et al., 2015). Some forms of combined oxidative phosphorylation deficiency (COXPD) can present as Leigh syndrome (see, e.g., 617664).&#13; Leigh syndrome may also be caused by mutations in components of the pyruvate dehydrogenase complex (e.g., DLD, 238331 and PDHA1, 300502). Deficiency of coenzyme Q10 (607426) can present as Leigh syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419518">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_420958"><div><strong>Pseudohypoparathyroidism type 1C</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>420958</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2932716</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Disorders of GNAS inactivation include the phenotypes pseudohypoparathyroidism Ia, Ib, and Ic (PHP-Ia, -Ib, -Ic), pseudopseudohypoparathyroidism (PPHP), progressive osseous heteroplasia (POH), and osteoma cutis (OC). PHP-Ia and PHP-Ic are characterized by: End-organ resistance to endocrine hormones including parathyroid hormone (PTH), thyroid-stimulating hormone (TSH), gonadotropins (LH and FSH), growth hormone-releasing hormone (GHRH), and CNS neurotransmitters (leading to obesity and variable degrees of intellectual disability and developmental delay); and The Albright hereditary osteodystrophy (AHO) phenotype (short stature, round facies, and subcutaneous ossifications) and brachydactyly type E (shortening mainly of the 4th and/or 5th metacarpals and metatarsals and distal phalanx of the thumb). Although PHP-Ib is characterized principally by PTH resistance, some individuals also have partial TSH resistance and mild features of AHO (e.g., brachydactyly). PPHP, a more limited form of PHP-Ia, is characterized by various manifestations of the AHO phenotype without the hormone resistance or obesity. POH and OC are even more restricted variants of PPHP: POH consists of dermal ossification beginning in infancy, followed by increasing and extensive bone formation in deep muscle and fascia. OC consists of extra-skeletal ossification that is limited to the dermis and subcutaneous tissues.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/420958">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_422448"><div><strong>Antley-Bixler syndrome without genital anomalies or disordered steroidogenesis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>422448</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2936791</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cytochrome P450 oxidoreductase deficiency (PORD) is a disorder of steroidogenesis with a broad phenotypic spectrum including cortisol deficiency, altered sex steroid synthesis, disorders of sex development (DSD), and skeletal malformations of the Antley-Bixler syndrome (ABS) phenotype. Cortisol deficiency is usually partial, with some baseline cortisol production but failure to mount an adequate cortisol response in stress. Mild mineralocorticoid excess can be present and causes arterial hypertension, usually presenting in young adulthood. Manifestations of altered sex steroid synthesis include ambiguous genitalia/DSD in both males and females, large ovarian cysts in females, poor masculinization and delayed puberty in males, and maternal virilization during pregnancy with an affected fetus. Skeletal malformations can manifest as craniosynostosis, mid-face retrusion with proptosis and choanal stenosis or atresia, low-set dysplastic ears with stenotic external auditory canals, hydrocephalus, radiohumeral synostosis, neonatal fractures, congenital bowing of the long bones, joint contractures, arachnodactyly, and clubfeet; other anomalies observed include urinary tract anomalies (renal pelvic dilatation, vesicoureteral reflux). Cognitive impairment is of minor concern and likely associated with the severity of malformations; studies of developmental outcomes are lacking.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/422448">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_424834"><div><strong>N syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>424834</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2936859</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome that is characterized by intellectual deficit, deafness, ocular anomalies, T-cell leukemia, cryptorchidism, hypospadias and spasticity. Mutations in DNA polymerase alpha, leading to increased chromosome breakage, may be responsible for the syndrome. X-linked recessive transmission has been proposed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/424834">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_422452"><div><strong>Bardet-Biedl syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>422452</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2936862</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bardet-Biedl syndrome is an autosomal recessive and genetically heterogeneous ciliopathy characterized by retinitis pigmentosa, obesity, kidney dysfunction, polydactyly, behavioral dysfunction, and hypogonadism (summary by Beales et al., 1999). Eight proteins implicated in the disorder assemble to form the BBSome, a stable complex involved in signaling receptor trafficking to and from cilia (summary by Scheidecker et al., 2014).&#13; Genetic Heterogeneity of Bardet-Biedl Syndrome&#13; BBS2 (615981) is caused by mutation in a gene on 16q13 (606151); BBS3 (600151), by mutation in the ARL6 gene on 3q11 (608845); BBS4 (615982), by mutation in a gene on 15q22 (600374); BBS5 (615983), by mutation in a gene on 2q31 (603650); BBS6 (605231), by mutation in the MKKS gene on 20p12 (604896); BBS7 (615984), by mutation in a gene on 4q27 (607590); BBS8 (615985), by mutation in the TTC8 gene on 14q32 (608132); BBS9 (615986), by mutation in a gene on 7p14 (607968); BBS10 (615987), by mutation in a gene on 12q21 (610148); BBS11 (615988), by mutation in the TRIM32 gene on 9q33 (602290); BBS12 (615989), by mutation in a gene on 4q27 (610683); BBS13 (615990), by mutation in the MKS1 gene (609883) on 17q23; BBS14 (615991), by mutation in the CEP290 gene (610142) on 12q21, BBS15 (615992), by mutation in the WDPCP gene (613580) on 2p15; BBS16 (615993), by mutation in the SDCCAG8 gene (613524) on 1q43; BBS17 (615994), by mutation in the LZTFL1 gene (606568) on 3p21; BBS18 (615995), by mutation in the BBIP1 gene (613605) on 10q25; BBS19 (615996), by mutation in the IFT27 gene (615870) on 22q12; BBS20 (619471), by mutation in the IFT172 gene (607386) on 9p21; BBS21 (617406), by mutation in the CFAP418 gene (614477) on 8q22; and BBS22 (617119), by mutation in the IFT74 gene (608040) on 9p21.&#13; The CCDC28B gene (610162) modifies the expression of BBS phenotypes in patients who have mutations in other genes. Mutations in MKS1, MKS3 (TMEM67; 609884), and C2ORF86 also modify the expression of BBS phenotypes in patients who have mutations in other genes.&#13; Although BBS had originally been thought to be a recessive disorder, Katsanis et al. (2001) demonstrated that clinical manifestation of some forms of Bardet-Biedl syndrome requires recessive mutations in 1 of the 6 loci plus an additional mutation in a second locus. While Katsanis et al. (2001) called this 'triallelic inheritance,' Burghes et al. (2001) suggested the term 'recessive inheritance with a modifier of penetrance.' Mykytyn et al. (2002) found no evidence of involvement of the common BBS1 mutation in triallelic inheritance. However, Fan et al. (2004) found heterozygosity in a mutation of the BBS3 gene (608845.0002) as an apparent modifier of the expression of homozygosity of the met390-to-arg mutation in the BBS1 gene (209901.0001).&#13; Allelic disorders include nonsyndromic forms of retinitis pigmentosa: RP51 (613464), caused by TTC8 mutation, and RP55 (613575), caused by ARL6 mutation.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/422452">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_422453"><div><strong>Bardet-Biedl syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>422453</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2936863</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">BBS2 is an autosomal recessive ciliopathy characterized by retinal degeneration, polydactyly, renal disease, hypogonadism, obesity, dysmorphic features, and variable degrees of cognitive impairment (Innes et al., 2010). Mutation in the BBS2 gene is the third most frequent cause of BBS, accounting for approximately 8% of cases (Zaghloul and Katsanis, 2009).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/422453">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_423627"><div><strong>Bardet-Biedl syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>423627</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2936864</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">BBS4 is a rare multisystemic disorder characterized primarily by retinal dystrophy, obesity, polydactyly, and renal dysfunction that accounts for less than 3% of BBS (Katsanis et al., 2002). Anosmia has been described in patients with BBS4 (Iannaccone et al., 2005), as well as polydactyly confined to the hands (Carmi et al., 1995).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/423627">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_423639"><div><strong>Cross syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>423639</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2936910</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Oculocerebral hypopigmentation syndrome, Cross type is a rare congenital syndrome characterized by cutaneous and ocular hypopigmentation, various ocular anomalies (e.g. corneal and lens opacity, spastic ectropium, and/or nystagmus), growth deficiency, intellectual deficit and other progressive neurologic anomalies such as spastic tetraplegia, hyperreflexia, and/or athetoid movements. The clinical picture varies among patients and may also include other anomalies such as urinary tract abnormalities, Dandy-Walker malformations, and/or bilateral inguinal hernia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/423639">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_461762"><div><strong>Muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>461762</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150412</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MDDGB3 is an autosomal recessive congenital muscular dystrophy with impaired intellectual development and mild brain abnormalities (Clement et al., 2008). It is part of a group of similar disorders resulting from defective glycosylation of alpha-dystroglycan (DAG1; 128239), collectively known as 'dystroglycanopathies' (Mercuri et al., 2009).&#13; For a discussion of genetic heterogeneity of congenital muscular dystrophy-dystroglycanopathy type B, see MDDGB1 (613155).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/461762">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_461764"><div><strong>Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>461764</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150414</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital muscular dystrophy-dystroglycanopathy with brain and eye anomalies (type A), which includes both the more severe Walker-Warburg syndrome (WWS) and the slightly less severe muscle-eye-brain disease (MEB), is an autosomal recessive disorder with characteristic brain and eye malformations, profound mental retardation, congenital muscular dystrophy, and death usually in the first years of life. It represents the most severe end of a phenotypic spectrum of similar disorders resulting from defective glycosylation of DAG1 (128239), collectively known as 'dystroglycanopathies' (Godfrey et al., 2007).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of muscular dystrophy-dystroglycanopathy type A, see MDDGA1 (236670).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/461764">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_461769"><div><strong>Nephronophthisis-like nephropathy 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>461769</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150419</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nephronophthisis-like nephropathy-1 (NPHPL1) is an autosomal recessive cystic kidney disease characterized by the onset of progressive renal insufficiency in childhood. End-stage renal disease occurs in the first 3 decades of life. The disorder may be associated with extrarenal manifestations, including hepatic and central nervous system involvement (summary by O'Toole et al., 2010).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of nephronophthisis, see NPHP1 (256100).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/461769">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462008"><div><strong>Warsaw breakage syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462008</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150658</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Warsaw syndrome is characterized by the clinical triad of severe congenital microcephaly, growth restriction, and sensorineural hearing loss due to cochlear hypoplasia. Intellectual disability is typically in the mild-to-moderate range. Severe speech delay is common. Gross and fine motor milestones are usually attained at the usual time, although a few individuals have mild delays. Additional common features include skeletal anomalies and cardiovascular anomalies. Abnormal skin pigmentation and genitourinary malformations have also been reported. Some individuals have had increased chromosome breakage and radial forms on cytogenetic testing of lymphocytes treated with diepoxybutane and mitomycin C.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462008">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462053"><div><strong>Frontonasal dysplasia with alopecia and genital anomaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462053</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150703</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Frontonasal dysplasia-2 (FND2) is an autosomal recessive disorder characterized by variable degrees of alopecia, skull defects, hypertelorism, depressed nasal bridge and ridge with notched alae nasi, and abnormal central nervous system findings (summary by Kariminejad et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462053">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462056"><div><strong>Frontonasal dysplasia - severe microphthalmia - severe facial clefting syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462056</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150706</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Frontonasal dysplasia is a condition that results from abnormal development of the head and face before birth. People with frontonasal dysplasia have at least two of the following features: widely spaced eyes (ocular hypertelorism); a broad nose; a slit (cleft) in one or both sides of the nose; no nasal tip; a central cleft involving the nose, upper lip, or roof of the mouth (palate); incomplete formation of the front of the skull with skin covering the head where bone should be (anterior cranium bifidum occultum); or a widow's peak hairline.\n\nOther features of frontonasal dysplasia can include additional facial malformations, absence or malformation of the tissue that connects the left and right halves of the brain (the corpus callosum), and intellectual disability.\n\nThere are at least three types of frontonasal dysplasia that are distinguished by their genetic causes and their signs and symptoms. In addition to the features previously described, each type of frontonasal dysplasia is associated with other distinctive features. Individuals with frontonasal dysplasia type 1 typically have abnormalities of the nose, a long area between the nose and upper lip (philtrum), and droopy upper eyelids (ptosis). Individuals with frontonasal dysplasia type 2 can have hair loss (alopecia) and an enlarged opening in the two bones that make up much of the top and sides of the skull (enlarged parietal foramina). Males with this form of the condition often have genital abnormalities. Features of frontonasal dysplasia type 3 include eyes that are missing (anophthalmia) or very small (microphthalmia) and low-set ears that are rotated backward. Frontonasal dysplasia type 3 is typically associated with the most severe facial abnormalities, but the severity of the condition varies widely, even among individuals with the same type.\n\nLife expectancy of affected individuals depends on the severity of the malformations and whether or not surgical intervention can improve associated health problems, such as breathing and feeding problems caused by the facial clefts.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462056">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462080"><div><strong>Hemolytic anemia due to glucophosphate isomerase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462080</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150730</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Glucose phosphate isomerase (GPI) deficiency is an inherited disorder that affects red blood cells, which carry oxygen to the body's tissues. People with this disorder have a condition known as chronic hemolytic anemia, in which red blood cells are broken down (undergo hemolysis) prematurely, resulting in a shortage of red blood cells (anemia). Chronic hemolytic anemia can lead to unusually pale skin (pallor), yellowing of the eyes and skin (jaundice), extreme tiredness (fatigue), shortness of breath (dyspnea), and a rapid heart rate (tachycardia). An enlarged spleen (splenomegaly), an excess of iron in the blood, and small pebble-like deposits in the gallbladder or bile ducts (gallstones) may also occur in this disorder.\n\nHemolytic anemia in GPI deficiency can range from mild to severe. In the most severe cases, affected individuals do not survive to birth. Individuals with milder disease can survive into adulthood. People with any level of severity of the disorder can have episodes of more severe hemolysis, called hemolytic crises, which can be triggered by bacterial or viral infections.\n\nA small percentage of individuals with GPI deficiency also have neurological problems, including intellectual disability and difficulty with coordinating movements (ataxia).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462080">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462207"><div><strong>Chromosome 4Q32.1-q32.2 triplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462207</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150857</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462207">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462208"><div><strong>Chromosome 16p12.2-p11.2 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462208</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150858</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The chromosome 16p12.2-p11.2 deletion syndrome is characterized phenotypically by dysmorphic facial features, feeding difficulties, recurrent ear infections, developmental delay, and cognitive impairment. Additional features, such as heart defects and short stature, are variable (Ballif et al., 2007; Battaglia et al., 2009).&#13; The pericentric region of chromosome 16, specifically involving 16p12-p11, is a structurally complex region enriched in repetitive sequence elements, rendering this region susceptible to deletion or rearrangement (Ballif et al., 2007). There are several phenotypes associated with variation in this region: see 611913 for a deletion or duplication at 16p11.2 associated with autism; see 136570 for discussion of a recurrent 520-kb deletion at 16p12.1 associated with developmental delay and craniofacial dysmorphism; and see 613444 for a 220-kb deletion at 16p11.2 associated with isolated severe early-onset obesity and obesity with developmental delay.&#13; Battaglia et al. (2009) emphasized that the region at chromosome 16p11.2 that confers susceptibility to autism (AUTS14; see 611913) is located more centromeric to and is distinct from the 16p12.2-p11.2 region involved in the multiple congenital anomalies and intellectual disability phenotype.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462208">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462224"><div><strong>Cranioectodermal dysplasia 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462224</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150874</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cranioectodermal dysplasia (CED) is a ciliopathy with skeletal involvement (narrow thorax, shortened proximal limbs, syndactyly, polydactyly, brachydactyly), ectodermal features (widely spaced hypoplastic teeth, hypodontia, sparse hair, skin laxity, abnormal nails), joint laxity, growth deficiency, and characteristic facial features (frontal bossing, low-set simple ears, high forehead, telecanthus, epicanthal folds, full cheeks, everted lower lip). Most affected children develop nephronophthisis that often leads to end-stage kidney disease in infancy or childhood, a major cause of morbidity and mortality. Hepatic fibrosis and retinal dystrophy are also observed. Dolichocephaly, often secondary to sagittal craniosynostosis, is a primary manifestation that distinguishes CED from most other ciliopathies. Brain malformations and developmental delay may also occur.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462224">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462226"><div><strong>COG5-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462226</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150876</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">COG5-congenital disorder of glycosylation (COG5-CDG, formerly known as congenital disorder of glycosylation type IIi) is an inherited condition that causes neurological problems and other abnormalities. The pattern and severity of this disorder's signs and symptoms vary among affected individuals.\n\nIndividuals with COG5-CDG typically develop signs and symptoms of the condition during infancy. These individuals often have weak muscle tone (hypotonia) and delayed development. Other neurological features include moderate to severe intellectual disability, poor coordination, and difficulty walking. Some affected individuals never learn to speak. Other features of COG5-CDG include short stature, an unusually small head size (microcephaly), and distinctive facial features, which can include ears that are set low and rotated backward, a short neck with a low hairline in the back, and a prominent nose. Less commonly, affected individuals can have hearing loss caused by changes in the inner ear (sensorineural hearing loss), vision impairment, damage to the nerves that control bladder function (a condition called neurogenic bladder), liver disease, and joint deformities (contractures).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462226">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462251"><div><strong>Hereditary spastic paraplegia 48</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462251</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150901</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia-48 (SPG48) is an autosomal recessive neurologic disorder characterized by spasticity of the lower limbs resulting in gait difficulties. Most patients have onset in mid- or late-adulthood, although childhood onset has been reported in 1 patient. Additional features may include parkinsonism, urinary incontinence, neuropathy, and mild cognitive impairment (summary by Hirst et al., 2015).&#13; For a discussion of genetic heterogeneity of autosomal recessive SPG, see SPG5A (270800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462251">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462289"><div><strong>THOC6-related developmental delay-microcephaly-facial dysmorphism syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462289</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150939</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">THOC6 intellectual disability syndrome is associated with moderate-to-severe developmental delay or intellectual disability; nonspecific dysmorphic facial features (tall forehead, deep-set eyes, short and upslanted palpebral fissures, epicanthal folds, and long nose with low-hanging columella); microcephaly (typically 2-3 SD below the mean); teeth anomalies (dental caries, malocclusion, and supernumerary teeth); cardiac anomalies (most typically atrial and/or ventricular septal defects); prenatal ventriculomegaly and hydrocephalus; cryptorchidism in males; and renal malformations (most commonly unilateral renal agenesis). More rarely, affected individuals may have hypergonadotropic hypogonadism (in females), seizures, poor growth, feeding difficulties, hearing loss, refractive errors and/or other eye abnormalities, vertebral anomalies, micro/retrognathia, and imperforate / anteriorly placed anus.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462289">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462291"><div><strong>Rubinstein-Taybi syndrome due to EP300 haploinsufficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462291</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150941</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rubinstein-Taybi syndrome (RSTS) is characterized by distinctive facial features, broad and often angulated thumbs and halluces, short stature, and moderate-to-severe intellectual disability. Characteristic craniofacial features include downslanted palpebral fissures, low-hanging columella, high palate, grimacing smile, and talon cusps. Prenatal growth is often normal, then height, weight, and head circumference percentiles rapidly drop in the first few months of life. Short stature is typical in adulthood. Obesity may develop in childhood or adolescence. Average IQ ranges between 35 and 50; however, developmental outcome varies considerably. Some individuals with EP300-related RSTS have normal intellect. Additional features include ocular abnormalities, hearing loss, respiratory difficulties, congenital heart defects, renal abnormalities, cryptorchidism, feeding problems, recurrent infections, and severe constipation.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462291">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462320"><div><strong>Noonan syndrome 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462320</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150970</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Noonan syndrome (NS) is characterized by characteristic facies, short stature, congenital heart defect, and developmental delay of variable degree. Other findings can include broad or webbed neck, unusual chest shape with superior pectus carinatum and inferior pectus excavatum, cryptorchidism, varied coagulation defects, lymphatic dysplasias, and ocular abnormalities. Although birth length is usually normal, final adult height approaches the lower limit of normal. Congenital heart disease occurs in 50%-80% of individuals. Pulmonary valve stenosis, often with dysplasia, is the most common heart defect and is found in 20%-50% of individuals. Hypertrophic cardiomyopathy, found in 20%-30% of individuals, may be present at birth or develop in infancy or childhood. Other structural defects include atrial and ventricular septal defects, branch pulmonary artery stenosis, and tetralogy of Fallot. Up to one fourth of affected individuals have mild intellectual disability, and language impairments in general are more common in NS than in the general population.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462320">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462321"><div><strong>LEOPARD syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462321</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150971</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Noonan syndrome with multiple lentigines (NSML) is a condition in which the cardinal features consist of lentigines, hypertrophic cardiomyopathy, short stature, pectus deformity, and dysmorphic facial features including widely spaced eyes and ptosis. Multiple lentigines present as dispersed flat, black-brown macules, mostly on the face, neck, and upper part of the trunk with sparing of the mucosa. In general, lentigines do not appear until age four to five years but then increase to the thousands by puberty. Some individuals with NSML do not exhibit lentigines. Approximately 85% of affected individuals have heart defects, including hypertrophic cardiomyopathy (typically appearing during infancy and sometimes progressive) and pulmonary valve stenosis. Postnatal growth restriction resulting in short stature occurs in fewer than 50% of affected persons, although most affected individuals have a height that is less than the 25th centile for age. Sensorineural hearing deficits, present in approximately 20% of affected individuals, are poorly characterized. Intellectual disability, typically mild, is observed in approximately 30% of persons with NSML.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462321">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462336"><div><strong>Developmental and epileptic encephalopathy, 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462336</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150986</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">KCNQ2-related disorders represent a continuum of overlapping neonatal epileptic phenotypes ranging from self-limited familial neonatal epilepsy (SLFNE) at the mild end to neonatal-onset developmental and epileptic encephalopathy (NEO-DEE) at the severe end. Additional, less common phenotypes consisting of neonatal encephalopathy with non-epileptic myoclonus, infantile or childhood-onset developmental and epileptic encephalopathy (DEE), and isolated intellectual disability (ID) without epilepsy have also been described. KCNQ2-SLFNE is characterized by seizures that start in otherwise healthy infants between two and eight days after term birth and spontaneously disappear between the first and the sixth to 12th month of life. There is always a seizure-free interval between birth and the onset of seizures. Seizures are characterized by sudden onset with prominent motor involvement, often accompanied by apnea and cyanosis; video EEG identifies seizures as focal onset with tonic stiffening of limb(s) and some migration during each seizure's evolution. About 30% of individuals with KCNQ2-SLFNE develop epileptic seizures later in life. KCNQ2-NEO-DEE is characterized by multiple daily seizures beginning in the first week of life that are mostly tonic, with associated focal motor and autonomic features. Seizures generally cease between ages nine months and four years. At onset, EEG shows a burst-suppression pattern or multifocal epileptiform activity; early brain MRI can show basal ganglia hyperdensities and later MRIs may show white matter or general volume loss. Moderate-to-profound developmental impairment is present.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462336">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462348"><div><strong>Autosomal recessive spinocerebellar ataxia 10</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462348</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150998</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-10 is an autosomal recessive neurodegenerative disorder with onset in the teenage or young adult years of gait and limb ataxia, dysarthria, and nystagmus associated with marked cerebellar atrophy on brain imaging (summary by Vermeer et al., 2010). Some patients have low levels of coenzyme Q10 (CoQ10) in muscle and may show some clinical improvement with CoQ10 treatment (Balreira et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462348">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462408"><div><strong>Hypermethioninemia with deficiency of S-adenosylhomocysteine hydrolase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462408</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151058</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypermethioninemia with S-adenosylhomocysteine hydrolase deficiency is an autosomal recessive severe neurometabolic disorder affecting the muscles, liver, and nervous system, resulting in death in infancy (summary by Bas et al., 2020).&#13; Other causes of hypermethioninemia include hereditary tyrosinemia (276700), cystathionine beta-synthase deficiency (236200), and methionine adenosyltransferase deficiency (250850).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462408">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462419"><div><strong>Chromosome 17p13.1 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462419</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151069</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462419">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462470"><div><strong>Meier-Gorlin syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462470</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151120</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Meier-Gorlin syndrome-4 (MGORS4) is a rare autosomal recessive disorder with the hallmarks of short stature, small external ears, and reduced or absent patellae. Breast hypoplasia is present in females (Guernsey et al., 2011).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Meier-Gorlin syndrome, see 224690.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462470">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462537"><div><strong>Seckel syndrome 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462537</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151187</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Seckel syndrome is an autosomal recessive disorder characterized by proportionate short stature, severe microcephaly, mental retardation, and a typical 'bird-head' facial appearance (summary by Kalay et al., 2011).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Seckel syndrome, see 210600.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462537">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462652"><div><strong>Chromosome 13q14 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462652</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151302</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The chromosome 13q14 deletion syndrome is characterized by retinoblastoma (180200), variable degrees of mental impairment, and characteristic facial features, including high forehead, prominent philtrum, and anteverted earlobes (summary by Caselli et al., 2007).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462652">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462653"><div><strong>Obesity, hyperphagia, and developmental delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462653</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151303</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">OBHD is a neurodevelopmental disorder characterized by global developmental delay and hyperphagia resulting in obesity. Some patients may develop seizures (summary by Hamdan et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462653">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462705"><div><strong>Megalencephalic leukoencephalopathy with subcortical cysts 2A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462705</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151355</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Megalencephalic leukoencephalopathy with subcortical cysts (MLC) is characterized by two phenotypes: classic MLC and improving MLC. Individuals with classic MLC present with macrocephaly, often in association with seizures, gradual onset of ataxia, spasticity, and sometimes extrapyramidal findings, mild gross motor developmental delays, and late-onset cognitive deterioration. Macrocephaly, observed in most affected individuals, may be present at birth but more frequently develops during the first year of life. The degree of macrocephaly is variable, with head circumferences reaching four to six standard deviations greater than the mean. After the first year of life, head growth trajectory typically normalizes and growth follows a line parallel to, although several standard deviations above, the 98th centile. Initial mental and motor development is normal in most individuals. Walking is often unstable, followed by ataxia of the trunk and extremities, pyramidal dysfunction, and brisk deep tendon reflexes. Early-onset seizures are common, and approximately 60% of individuals have epilepsy that is typically well controlled with anti-seizure medication, but status epilepticus occurs relatively frequently. Cognitive deterioration occurs later in the course of the disease and is usually mild in severity. Overall disease severity varies, with some individuals being able to ambulate independently for only a few years from disease onset to other individuals continuing to independently walk in the fifth decade of life. Individuals with improving MLC have a similar initial presentation with delayed cognitive or motor development, followed by an improving clinical course: macrocephaly usually persists, but some children become normocephalic; motor function improves or normalizes; hypotonia and clumsiness may persist in some or neurologic examination may become normal. Some individuals have intellectual disability that is stable, with or without autism spectrum disorder. Epilepsy is much less frequent than in classic MLC.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462705">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462706"><div><strong>Megalencephalic leukoencephalopathy with subcortical cysts 2B, remitting, with or without intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462706</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151356</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Megalencephalic leukoencephalopathy with subcortical cysts (MLC) is characterized by two phenotypes: classic MLC and improving MLC. Individuals with classic MLC present with macrocephaly, often in association with seizures, gradual onset of ataxia, spasticity, and sometimes extrapyramidal findings, mild gross motor developmental delays, and late-onset cognitive deterioration. Macrocephaly, observed in most affected individuals, may be present at birth but more frequently develops during the first year of life. The degree of macrocephaly is variable, with head circumferences reaching four to six standard deviations greater than the mean. After the first year of life, head growth trajectory typically normalizes and growth follows a line parallel to, although several standard deviations above, the 98th centile. Initial mental and motor development is normal in most individuals. Walking is often unstable, followed by ataxia of the trunk and extremities, pyramidal dysfunction, and brisk deep tendon reflexes. Early-onset seizures are common, and approximately 60% of individuals have epilepsy that is typically well controlled with anti-seizure medication, but status epilepticus occurs relatively frequently. Cognitive deterioration occurs later in the course of the disease and is usually mild in severity. Overall disease severity varies, with some individuals being able to ambulate independently for only a few years from disease onset to other individuals continuing to independently walk in the fifth decade of life. Individuals with improving MLC have a similar initial presentation with delayed cognitive or motor development, followed by an improving clinical course: macrocephaly usually persists, but some children become normocephalic; motor function improves or normalizes; hypotonia and clumsiness may persist in some or neurologic examination may become normal. Some individuals have intellectual disability that is stable, with or without autism spectrum disorder. Epilepsy is much less frequent than in classic MLC.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462706">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462730"><div><strong>Schizophrenia 15</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462730</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151380</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">A schizophrenia that has material basis in a mutation of SHANK3 on chromosome 22q13.33.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462730">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462761"><div><strong>Intellectual disability, autosomal dominant 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462761</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151411</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">GRIN2B-related neurodevelopmental disorder is characterized by mild to profound developmental delay / intellectual disability (DD/ID) in all affected individuals. Muscle tone abnormalities (spasticity and/or hypotonia, occasionally associated with feeding difficulties), as well as epilepsy and autism spectrum disorder (ASD) / behavioral issues, are common. Other infantile- or childhood-onset findings include microcephaly; dystonic, dyskinetic, or choreiform movement disorder; and/or cortical visual impairment. Brain MRI reveals a malformation of cortical development in a minority of affected individuals. To date, fewer than 100 individuals with GRIN2B-related neurodevelopmental disorder have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462761">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462791"><div><strong>Dyskeratosis congenita, autosomal recessive 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462791</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151441</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dyskeratosis congenita and related telomere biology disorders (DC/TBD) are caused by impaired telomere maintenance resulting in short or very short telomeres. The phenotypic spectrum of telomere biology disorders is broad and includes individuals with classic dyskeratosis congenita (DC) as well as those with very short telomeres and an isolated physical finding. Classic DC is characterized by a triad of dysplastic nails, lacy reticular pigmentation of the upper chest and/or neck, and oral leukoplakia, although this may not be present in all individuals. People with DC/TBD are at increased risk for progressive bone marrow failure (BMF), myelodysplastic syndrome or acute myelogenous leukemia, solid tumors (usually squamous cell carcinoma of the head/neck or anogenital cancer), and pulmonary fibrosis. Other findings can include eye abnormalities (epiphora, blepharitis, sparse eyelashes, ectropion, entropion, trichiasis), taurodontism, liver disease, gastrointestinal telangiectasias, and avascular necrosis of the hips or shoulders. Although most persons with DC/TBD have normal psychomotor development and normal neurologic function, significant developmental delay is present in both forms; additional findings include cerebellar hypoplasia (Hoyeraal Hreidarsson syndrome) and bilateral exudative retinopathy and intracranial calcifications (Revesz syndrome and Coats plus syndrome). Onset and progression of manifestations of DC/TBD vary: at the mild end of the spectrum are those who have only minimal physical findings with normal bone marrow function, and at the severe end are those who have the diagnostic triad and early-onset BMF.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462791">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462812"><div><strong>Intellectual disability, autosomal recessive 14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462812</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151462</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive intellectual developmental disorder-14 (MRT14) is characterized by developmental delay from birth with mild to moderate impairment of intellectual development. There are no dysmorphic features, and growth parameters and neurologic findings are normal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462812">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462843"><div><strong>Hennekam-Beemer syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462843</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151493</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare multiple congenital anomalies syndrome characterized by cutaneous mastocytosis, microcephaly, microtia and/or hearing loss, hypotonia and skeletal anomalies (e.g. clinodactyly, camptodactyly, scoliosis). Additional common features are short stature, intellectual disability and difficulties. Facial dysmorphism may include upslanted palpebral fissures, highly arched palate and micrognathia. Rarely, seizures and asymmetrically small feet have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462843">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_463131"><div><strong>CK syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>463131</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151781</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NSDHL-related disorders include CHILD (congenital hemidysplasia with ichthyosiform nevus and limb defects) syndrome, an X-linked disorder that is usually male lethal during gestation and thus predominantly affects females; and CK syndrome, an X-linked disorder that affects males. CHILD syndrome is characterized by unilateral distribution of ichthyosiform skin lesions and ipsilateral limb defects that range from shortening of the metacarpals and phalanges to absence of the entire limb. Intellect is usually normal. The ichthyosiform skin lesions are usually present at birth or in the first weeks of life; new lesions can develop in later life. Onychodystrophy and periungual hyperkeratosis are common. Heart, lung, and kidney malformations can also occur. CK syndrome is characterized by mild-to-severe cognitive impairment and behavior problems (aggression, attention-deficit/hyperactivity disorder [ADHD], and irritability). All reported affected males have developed seizures in infancy and have cerebral cortical malformations and microcephaly. All have distinctive facial features, a thin habitus, and relatively long, thin fingers and toes. Some have scoliosis and kyphosis. Strabismus is common. Optic atrophy is also reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/463131">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_463405"><div><strong>D-2-hydroxyglutaric aciduria 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>463405</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3152055</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">D-2-hydroxyglutaric aciduria is a neurometabolic disorder first described by Chalmers et al. (1980). Clinical symptoms include developmental delay, epilepsy, hypotonia, and dysmorphic features. Mild and severe phenotypes were characterized (van der Knaap et al., 1999). The severe phenotype is homogeneous and is characterized by early infantile-onset epileptic encephalopathy and, often, cardiomyopathy. The mild phenotype has a more variable clinical presentation.&#13; Genetic Heterogeneity of D-2-Hydroxyglutaric Aciduria&#13; D-2-hydroxyglutaric aciduria-2 (D2HGA2; 613657) is caused by heterozygous mutation in the mitochondrial isocitrate dehydrogenase-2 gene (IDH2; 147650) on chromosome 15q26.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/463405">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_463613"><div><strong>Spondyloepimetaphyseal dysplasia, Maroteaux type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>463613</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3159322</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The autosomal dominant TRPV4 disorders (previously considered to be clinically distinct phenotypes before their molecular basis was discovered) are now grouped into neuromuscular disorders and skeletal dysplasias; however, the overlap within each group is considerable. Affected individuals typically have either neuromuscular or skeletal manifestations alone, and in only rare instances an overlap syndrome has been reported. The three autosomal dominant neuromuscular disorders (mildest to most severe) are: Charcot-Marie-Tooth disease type 2C. Scapuloperoneal spinal muscular atrophy. Congenital distal spinal muscular atrophy. The autosomal dominant neuromuscular disorders are characterized by a congenital-onset, static, or later-onset progressive peripheral neuropathy with variable combinations of laryngeal dysfunction (i.e., vocal fold paresis), respiratory dysfunction, and joint contractures. The six autosomal dominant skeletal dysplasias (mildest to most severe) are: Familial digital arthropathy-brachydactyly. Autosomal dominant brachyolmia. Spondylometaphyseal dysplasia, Kozlowski type. Spondyloepiphyseal dysplasia, Maroteaux type. Parastremmatic dysplasia. Metatropic dysplasia. The skeletal dysplasia is characterized by brachydactyly (in all 6); the five that are more severe have short stature that varies from mild to severe with progressive spinal deformity and involvement of the long bones and pelvis. In the mildest of the autosomal dominant TRPV4 disorders life span is normal; in the most severe it is shortened. Bilateral progressive sensorineural hearing loss (SNHL) can occur with both autosomal dominant neuromuscular disorders and skeletal dysplasias.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/463613">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_463627"><div><strong>Fanconi anemia complementation group D2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>463627</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3160738</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fanconi anemia (FA) is characterized by physical abnormalities, bone marrow failure, and increased risk for malignancy. Physical abnormalities, present in approximately 75% of affected individuals, include one or more of the following: short stature, abnormal skin pigmentation, skeletal malformations of the upper and/or lower limbs, microcephaly, and ophthalmic and genitourinary tract anomalies. Progressive bone marrow failure with pancytopenia typically presents in the first decade, often initially with thrombocytopenia or leukopenia. The incidence of acute myeloid leukemia is 13% by age 50 years. Solid tumors – particularly of the head and neck, skin, and genitourinary tract – are more common in individuals with FA.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/463627">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_463628"><div><strong>Fanconi anemia complementation group E</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>463628</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3160739</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fanconi anemia (FA) is characterized by physical abnormalities, bone marrow failure, and increased risk for malignancy. Physical abnormalities, present in approximately 75% of affected individuals, include one or more of the following: short stature, abnormal skin pigmentation, skeletal malformations of the upper and/or lower limbs, microcephaly, and ophthalmic and genitourinary tract anomalies. Progressive bone marrow failure with pancytopenia typically presents in the first decade, often initially with thrombocytopenia or leukopenia. The incidence of acute myeloid leukemia is 13% by age 50 years. Solid tumors – particularly of the head and neck, skin, and genitourinary tract – are more common in individuals with FA.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/463628">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_465922"><div><strong>Niemann-Pick disease, type C1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>465922</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3179455</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Niemann-Pick disease type C (NPC) is a slowly progressive lysosomal disorder whose principal manifestations are age dependent. The manifestations in the perinatal period and infancy are predominantly visceral, with hepatosplenomegaly, jaundice, and (in some instances) pulmonary infiltrates. From late infancy onward, the presentation is dominated by neurologic manifestations. The youngest children may present with hypotonia and developmental delay, with the subsequent emergence of ataxia, dysarthria, dysphagia, and, in some individuals, epileptic seizures, dystonia, and gelastic cataplexy. Although cognitive impairment may be subtle at first, it eventually becomes apparent that affected individuals have a progressive dementia. Older teenagers and young adults may present predominantly with apparent early-onset dementia or psychiatric manifestations; however, careful examination usually identifies typical neurologic signs.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/465922">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_467404"><div><strong>Chromosome 15q11.2 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>467404</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3180937</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A heterozygous deletion of chromosome 15q11.2 may increase the susceptibility to neuropsychiatric or neurodevelopmental problems, including delayed psychomotor development, speech delay, autism spectrum disorder, attention deficit-hyperactivity disorder, obsessive-compulsive disorder, and possibly seizures (summary by Doornbos et al., 2009 and Burnside et al., 2011).&#13; See also chromosome 15q11.2 duplication syndrome (608636).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/467404">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_781653"><div><strong>HSD10 mitochondrial disease</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>781653</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3266731</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">HSD10 mitochondrial disease (HSD10MD) most commonly presents as an X-linked neurodegenerative disorder with highly variable severity and age at onset ranging from the neonatal period to early childhood. The features are usually multisystemic, consistent with mitochondrial dysfunction. Some affected males have a severe infantile form associated with cardiomyopathy that may result in death in early childhood, whereas other rare patients may have juvenile onset or even atypical presentations with normal neurologic development. More severely affected males show developmental regression in infancy or early childhood, often associated with early-onset intractable seizures, progressive choreoathetosis and spastic tetraplegia, optic atrophy or retinal degeneration resulting in visual loss, and mental retardation. Heterozygous females may show non-progressive developmental delay and intellectual disability, but may also be clinically normal. Although the diagnosis can be aided by the observation of increased urinary levels of metabolites of isoleucine breakdown (2-methyl-3 hydroxybutyrate and tiglylglycine), there is not a correlation between these laboratory features and the phenotype. In addition, patients do not develop severe metabolic crises in the neonatal period as observed in other organic acidurias, but may show persistent lactic acidosis, most likely reflecting mitochondrial dysfunction (summary by Rauschenberger et al., 2010; Zschocke, 2012).&#13; In a review of this disorder, Zschocke (2012) noted that although it was originally thought to be an inborn error of branched-chain fatty acid and isoleucine metabolism resulting from decreased HSD17B10 dehydrogenase activity (HSD17B10 'deficiency'), subsequent studies have shown that the HSD17B10 gene product has additional functions and also acts as a component of the mitochondrial RNase P holoenzyme, which is involved in mitochondrial tRNA processing and maturation and ultimately mitochondrial protein synthesis. The multisystemic features of HSD10MD most likely result from the adverse effect of HSD17B10 mutations on mitochondrial function, rather than from the effects on the dehydrogenase activity (see PATHOGENESIS).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/781653">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_477037"><div><strong>Syndromic X-linked intellectual disability Raymond type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>477037</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3275406</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Raymond-type X-linked syndromic intellectual developmental disorder (MRXSR) is characterized by mildly to severely impaired intellectual development with speech and language difficulties associated with variable additional features, including marfanoid habitus, epilepsy, facial dysmorphism, hypotonia, and behavioral problems (summary by Baker et al., 2015 and Schirwani et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/477037">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_477039"><div><strong>Intellectual disability, X-linked 96</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>477039</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3275408</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the SYP gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/477039">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_477074"><div><strong>Intellectual disability, X-linked 90</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>477074</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3275443</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the DLG3 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/477074">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_477075"><div><strong>Intellectual disability, X-linked 88</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>477075</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3275444</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/477075">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_477091"><div><strong>Syndromic X-linked intellectual disability 17</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>477091</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3275460</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual disability-alacrima-achalasia syndrome is a rare, genetic intellectual disability syndrome characterized by delayed motor and cognitive development, absence or severe delay in speech development, intellectual disability, and alacrima. Achalasia/dysphagia and mild autonomic dysfunction (i.e. anisocoria) have also been reported in some patients. The phenotype is similar to the one observed in autosomal recessive Triple A syndrome, but differs by the presence of intellectual disability in all affected individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/477091">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_477095"><div><strong>Syndromic X-linked intellectual disability Nascimento type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>477095</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3275464</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The Nascimento type of X-linked syndromic intellectual developmental disorder (MRXSN) is characterized by dysmorphic features, including large head, synophrys, prominent supraorbital ridges, almond-shaped and deep-set eyes, large ears, wide mouth, myxedematous appearance, hirsutism, abnormal hair whorls, micropenis, and onychodystrophy. Female carriers have normal cognition, but may show subtle facial features (summary by Budny et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/477095">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_477107"><div><strong>X-linked dominant chondrodysplasia, Chassaing-Lacombe type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>477107</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3275476</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked dominant chondrodysplasia Chassaing-Lacombe type is a rare genetic bone disorder characterized by chondrodysplasia, intrauterine growth retardation (IUGR), hydrocephaly and facial dysmorphism in the affected males.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/477107">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_477126"><div><strong>Kabuki syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>477126</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3275495</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Kabuki syndrome (KS) is characterized by typical facial features (long palpebral fissures with eversion of the lateral third of the lower eyelid; arched and broad eyebrows; short columella with depressed nasal tip; large, prominent, or cupped ears), minor skeletal anomalies, persistence of fetal fingertip pads, mild-to-moderate intellectual disability, and postnatal growth deficiency. Other findings may include: congenital heart defects, genitourinary anomalies, cleft lip and/or palate, gastrointestinal anomalies including anal atresia, ptosis and strabismus, and widely spaced teeth and hypodontia. Functional differences can include: increased susceptibility to infections and autoimmune disorders, seizures, endocrinologic abnormalities (including isolated premature thelarche in females), feeding problems, and hearing loss.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/477126">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_477858"><div><strong>Acrodysostosis 1 with or without hormone resistance</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>477858</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3276228</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Acrodysostosis-1 (ACRDYS1) is a form of skeletal dysplasia characterized by short stature, severe brachydactyly, facial dysostosis, and nasal hypoplasia. Affected individuals often have advanced bone age and obesity. Laboratory studies show resistance to multiple hormones, including parathyroid, thyrotropin, calcitonin, growth hormone-releasing hormone, and gonadotropin (summary by Linglart et al., 2011). However, not all patients show endocrine abnormalities (Lee et al., 2012).&#13; Genetic Heterogeneity of Acrodysostosis&#13; See also ACRDYS2 (614613), caused by mutation in the PDE4D gene (600129) on chromosome 5q12.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/477858">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_480111"><div><strong>Microcephaly and chorioretinopathy 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>480111</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3278481</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Microcephaly and chorioretinopathy is an autosomal recessive developmental disorder characterized by delayed psychomotor development and visual impairment, often accompanied by short stature (summary by Martin et al., 2014).&#13; Genetic Heterogeneity of Microcephaly and Chorioretinopathy&#13; See also MCCRP2 (616171), caused by mutation in the PLK4 gene (605031) on chromosome 4q27, and MCCRP3 (616335), caused by mutation in the TUBGCP4 gene (609610) on chromosome 15q15.&#13; An autosomal dominant form of microcephaly with or without chorioretinopathy, lymphedema, or impaired intellectual development is caused by heterozygous mutation in the KIF11 gene (148760) on chromosome 10q23.&#13; See also Mirhosseini-Holmes-Walton syndrome (autosomal recessive pigmentary retinopathy and mental retardation; 268050).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/480111">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481338"><div><strong>Mitochondrial complex V (ATP synthase) deficiency nuclear type 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481338</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3279708</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex V (ATP synthase) deficiency, nuclear type 3 (MC5DN3) is an autosomal recessive disorder with variable manifestations. Affected individuals present soon after birth or in early infancy with hypotonia, respiratory distress, and poor sucking. They have global developmental delay with mildly impaired intellectual disability. Additional features may include dystonia, ataxia, peripheral neuropathy, and seizures. Congenital cataracts, hearing impairment, and mild left cardiac ventricular hypertrophy have been reported in 1 patient each. Laboratory studies show increased lactate; some patients have hyperammonemia, 3-methylglutaconic aciduria, and hyperCKemia (Mayr et al., 2010; Zech et al., 2022).&#13; For a general phenotypic description of the nuclear type of mitochondrial complex V deficiency and a discussion of genetic heterogeneity of mitochondrial complex V deficiency, see 604273.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481338">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481378"><div><strong>Immunodeficiency-centromeric instability-facial anomalies syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481378</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3279748</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Immunodeficiency, centromeric instability, and facial dysmorphism (ICF) syndrome is a rare autosomal recessive disorder characterized by facial dysmorphism, immunoglobulin deficiency resulting in recurrent infections, and mental retardation. Laboratory studies of patient cells show hypomethylation of satellite regions of chromosomes 1, 9, and 16, as well as pericentromeric chromosomal instability in response to phytohemagglutinin stimulation (summary by de Greef et al., 2011).&#13; For a discussion of genetic heterogeneity of immunodeficiency-centromeric instability-facial anomalies syndrome, see ICF1 (242860).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481378">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481405"><div><strong>Multiple congenital anomalies-hypotonia-seizures syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481405</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3279775</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Multiple congenital anomalies-hypotonia-seizures syndrome is an autosomal recessive disorder characterized by neonatal hypotonia, lack of psychomotor development, seizures, dysmorphic features, and variable congenital anomalies involving the cardiac, urinary, and gastrointestinal systems. Most affected individuals die before 3 years of age (summary by Maydan et al., 2011). The disorder is caused by a defect in glycosylphosphatidylinositol biosynthesis; see GPIBD1 (610293).&#13; Genetic Heterogeneity of Multiple Congenital Anomalies-Hypotonia-Seizures Syndrome&#13; MCAHS2 (300868) is caused by mutation in the PIGA gene (311770) on chromosome Xp22, MCAHS3 (615398) is caused by mutation in the PIGT gene (610272) on chromosome 20q13, and MCAHS4 (618548) is caused by mutation in the PIGQ gene (605754) on chromosome 16p13.&#13; Knaus et al. (2018) provided a review of the main clinical features of the different types of MCAHS, noting that patients with mutations in the PIGN, PIGA, and PIGT genes have distinct patterns of facial anomalies that can be detected by computer-assisted comparison. Some individuals with MCAHS may have variable increases in alkaline phosphatase (AP) as well as variable decreases in GPI-linked proteins that can be detected by flow cytometry. However, there was no clear correlation between AP levels or GPI-linked protein abnormalities and degree of neurologic involvement, mutation class, or gene involved. Knaus et al. (2018) concluded that a distinction between MCAHS and HPMRS1 (239300), which is also caused by mutation in genes involved in GPI biosynthesis, may be artificial and even inaccurate, and that all these disorders should be considered and classified together under the more encompassing term of 'GPI biosynthesis defects' (GPIBD).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481405">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481472"><div><strong>Intellectual disability, autosomal dominant 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481472</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3279842</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal dominant non-syndromic intellectual disability in which the cause of the disease is a mutation in the DOCK8 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481472">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481473"><div><strong>Mosaic variegated aneuploidy syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481473</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3279843</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mosaic variegated aneuploidy syndrome is an autosomal recessive disorder characterized by poor growth and variable phenotypic manifestations, such as facial dysmorphism and congenital heart defects, associated with mosaic aneuploidies resulting from defects in cell division (summary by Snape et al., 2011).&#13; See also MVA1 (257300), caused by mutation in the BUB1B gene (602860) on chromosome 15q15.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481473">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481757"><div><strong>Rafiq syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481757</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280127</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rafiq syndrome (RAFQS) is an autosomal recessive disorder characterized by variably impaired intellectual and motor development, a characteristic facial dysmorphism, truncal obesity, and hypotonia. The facial dysmorphism comprises prominent eyebrows with lateral thinning, downward-slanting palpebral fissures, bulbous tip of the nose, large ears, and a thin upper lip. Behavioral problems, including overeating, verbal and physical aggression, have been reported in some cases. Serum transferrin isoelectric focusing shows a type 2 pattern (summary by Balasubramanian et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481757">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481784"><div><strong>Intellectual disability, autosomal recessive 16</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481784</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280154</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481784">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481798"><div><strong>Neuropathy, hereditary sensory, type 2C</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481798</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280168</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary sensory and autonomic neuropathy type II (HSAN2) is characterized by progressively reduced sensation to pain, temperature, and touch. Onset can be at birth and is often before puberty. The sensory deficit is predominantly distal with the lower limbs more severely affected than the upper limbs. Over time sensory function becomes severely reduced. Unnoticed injuries and neuropathic skin promote ulcerations and infections that result in spontaneous amputation of digits or the need for surgical amputation. Osteomyelitis is common. Painless fractures can complicate the disease. Autonomic disturbances are variable and can include hyperhidrosis, tonic pupils, and urinary incontinence in those with more advanced disease.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481798">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481861"><div><strong>Chromosome 8q21.11 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481861</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280231</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The chromosome 8q21.11 deletion syndrome is characterized by impaired intellectual development and common facial dysmorphic features (summary by Palomares et al., 2011).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481861">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481895"><div><strong>Intellectual disability, autosomal recessive 18</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481895</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280265</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">MRT18 is an autosomal recessive disorder characterized by impaired intellectual development with or without epilepsy. Other features may include spasticity, congenital heart disease, brain abnormalities, and atypical electroencephalography (summary by Trehan et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481895">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_481912"><div><strong>Intellectual disability, autosomal dominant 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>481912</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280282</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GRIN1-related neurodevelopmental disorder (GRIN1-NDD) is characterized by mild-to-profound developmental delay / intellectual disability (DD/ID) in all affected individuals. Other common manifestations are epilepsy, muscular hypotonia, movement disorders, spasticity, feeding difficulties, and behavior issues. A subset of individuals show a malformation of cortical development consisting of extensive and diffuse bilateral polymicrogyria. To date, 72 individuals with GRIN1-NDD have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/481912">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482045"><div><strong>Cognitive impairment with or without cerebellar ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482045</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280415</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SCN8A-related epilepsy and/or neurodevelopmental disorders encompasses a spectrum of phenotypes. Epilepsy phenotypes include developmental and epileptic encephalopathy (DEE) associated with severe developmental delays and usually pharmacoresistant epilepsy with multiple seizure types; mild-to-moderate developmental and epileptic encephalopathy (mild/modDEE, or intermediate epilepsy) with partially treatable epilepsy; self-limited familial infantile epilepsy (SeLFIE, also known as benign familial infantile epilepsy or BFIE) with normal cognition and medically treatable seizures; neurodevelopmental delays with generalized epilepsy (NDDwGE); and neurodevelopmental disorder without epilepsy (NDDwoE) with mild-to-moderate intellectual disability (though it can be severe in ~10% of affected individuals). Hypotonia and movement disorders including dystonia, ataxia, and choreoathetosis are common in some phenotypes. Sudden unexpected death in epilepsy (SUDEP) has been reported in some affected individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482045">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482082"><div><strong>Autosomal recessive spinocerebellar ataxia 12</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482082</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280452</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-12 is a neurologic disorder characterized by onset of generalized seizures in infancy, delayed psychomotor development with mental retardation, and cerebellar ataxia. Some patients may also show spasticity (summary by Mallaret et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482082">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482119"><div><strong>Feingold syndrome type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482119</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280489</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Feingold syndrome is an autosomal dominant disorder characterized by variable combinations of microcephaly, limb malformations, esophageal and duodenal atresias, and learning disability/mental retardation. Hand and foot abnormalities may include hypoplastic thumbs, clinodactyly of second and fifth fingers, syndactyly (characteristically between second and third and fourth and fifth toes), and shortened or absent middle phalanges. Cardiac and renal malformations, vertebral anomalies, and deafness have also been described in a minority of patients (summary by Teszas et al., 2006).&#13; For a discussion of genetic heterogeneity of Feingold syndrome, see FGLDS1 (164280).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482119">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482153"><div><strong>Intellectual disability, autosomal recessive 31</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482153</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280523</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482153">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482168"><div><strong>Intellectual disability, autosomal recessive 27</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482168</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280538</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the LINS1 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482168">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482274"><div><strong>Hypomyelinating leukodystrophy 8 with or without oligodontia and-or hypogonadotropic hypogonadism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482274</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280644</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">POLR3-related leukodystrophy, a hypomyelinating leukodystrophy with specific features on brain MRI, is characterized by varying combinations of four major clinical findings: Neurologic dysfunction, typically predominated by motor dysfunction (progressive cerebellar dysfunction, and to a lesser extent extrapyramidal [i.e., dystonia], pyramidal [i.e., spasticity] and cognitive dysfunctions). Abnormal dentition (delayed dentition, hypodontia, oligodontia, and abnormally placed or shaped teeth). Endocrine abnormalities such as short stature (in ~50% of individuals) with or without growth hormone deficiency, and more commonly, hypogonadotropic hypogonadism manifesting as delayed, arrested, or absent puberty. Ocular abnormality in the form of myopia, typically progressing over several years and becoming severe. POLR3-related leukodystrophy and 4H leukodystrophy are the two recognized terms for five previously described overlapping clinical phenotypes (initially described as distinct entities before their molecular basis was known). These include: Hypomyelination, hypodontia, hypogonadotropic hypogonadism (4H syndrome); Ataxia, delayed dentition, and hypomyelination (ADDH); Tremor-ataxia with central hypomyelination (TACH); Leukodystrophy with oligodontia (LO); Hypomyelination with cerebellar atrophy and hypoplasia of the corpus callosum (HCAHC). Age of onset is typically in early childhood but later-onset cases have also been reported. An infant with Wiedemann-Rautenstrauch syndrome (neonatal progeroid syndrome) was recently reported to have pathogenic variants in POLR3A on exome sequencing. Confirmation of this as a very severe form of POLR3-related leukodystrophy awaits replication in other individuals with a clinical diagnosis of Wiedemann-Rautenstrauch syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482274">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482360"><div><strong>Familial temporal lobe epilepsy 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482360</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280730</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A temporal lobe epilepsy that has material basis in heterozygous mutation in the CPA6 gene on chromosome 8q13.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482360">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482429"><div><strong>PYCR1-related de Barsy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482429</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280799</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">De Barsy syndrome, also known as autosomal recessive cutis laxa type III (ARCL3), is a rare autosomal recessive disorder characterized by an aged appearance with distinctive facial features, sparse hair, ophthalmologic abnormalities, intrauterine growth retardation (IUGR), and cutis laxa (summary by Lin et al., 2011).&#13; For a phenotypic description and a discussion of genetic heterogeneity of de Barsy syndrome, see 219150.&#13; For a phenotypic description and a discussion of genetic heterogeneity of autosomal recessive cutis laxa, see 219200.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482429">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482527"><div><strong>Joubert syndrome 15</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482527</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280897</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482527">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482674"><div><strong>Intellectual disability, autosomal recessive 34</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482674</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3281044</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MRT34 is an autosomal recessive neurologic disorder characterized by mildly to moderately impaired intellectual development and megalencephaly or enlarged head circumference. Brain imaging shows a mild variant of lissencephaly with anterior-predominant pachygyria with shallow and unusually wide sulci and mildly thickened cortex. Some patients may have seizures (summary by Di Donato et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482674">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482767"><div><strong>Chromosome 17q12 duplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482767</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3281137</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The 17q12 recurrent duplication is characterized by intellectual abilities ranging from normal to severe disability and other variable clinical manifestations. Speech delay is common, and most affected individuals have some degree of hypotonia and gross motor delay. Behavioral and psychiatric conditions reported in some affected individuals include autism spectrum disorder, schizophrenia, and behavioral abnormalities (aggression and self-injury). Seizures are present in 75%. Additional common findings include microcephaly, ocular abnormalities, and endocrine abnormalities. Short stature and renal and cardiac abnormalities are also reported in some individuals. Penetrance is incomplete and clinical findings are variable.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482767">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482768"><div><strong>Chromosome 17q12 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482768</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3281138</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">17q12 recurrent deletion syndrome is characterized by variable combinations of the three following findings: structural or functional abnormalities of the kidney and urinary tract, maturity-onset diabetes of the young type 5 (MODY5), and neurodevelopmental or neuropsychiatric disorders (e.g., developmental delay, intellectual disability, autism spectrum disorder [ASD], attention-deficit/hyperactivity disorder [ADHD], schizophrenia, anxiety, and bipolar disorder). Using a method of data analysis that avoids ascertainment bias, the authors determined that multicystic kidneys and other structural and functional kidney anomalies occur in 85%-90% of affected individuals, MODY5 in approximately 40%, and some degree of developmental delay or learning disability in approximately 50%. MODY5 is most often diagnosed before age 25 years (range: age 10-50 years).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482768">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482821"><div><strong>Developmental and epileptic encephalopathy, 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482821</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3281191</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SCN8A-related epilepsy and/or neurodevelopmental disorders encompasses a spectrum of phenotypes. Epilepsy phenotypes include developmental and epileptic encephalopathy (DEE) associated with severe developmental delays and usually pharmacoresistant epilepsy with multiple seizure types; mild-to-moderate developmental and epileptic encephalopathy (mild/modDEE, or intermediate epilepsy) with partially treatable epilepsy; self-limited familial infantile epilepsy (SeLFIE, also known as benign familial infantile epilepsy or BFIE) with normal cognition and medically treatable seizures; neurodevelopmental delays with generalized epilepsy (NDDwGE); and neurodevelopmental disorder without epilepsy (NDDwoE) with mild-to-moderate intellectual disability (though it can be severe in ~10% of affected individuals). Hypotonia and movement disorders including dystonia, ataxia, and choreoathetosis are common in some phenotypes. Sudden unexpected death in epilepsy (SUDEP) has been reported in some affected individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482821">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482831"><div><strong>Coffin-Siris syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482831</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3281201</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Coffin-Siris syndrome (CSS) is classically characterized by aplasia or hypoplasia of the distal phalanx or nail of the fifth and additional digits, developmental or cognitive delay of varying degree, distinctive facial features, hypotonia, hirsutism/hypertrichosis, and sparse scalp hair. Congenital anomalies can include malformations of the cardiac, gastrointestinal, genitourinary, and/or central nervous systems. Other findings commonly include feeding difficulties, slow growth, ophthalmologic abnormalities, and hearing impairment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482831">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482832"><div><strong>Intellectual disability, autosomal dominant 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482832</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3281202</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">DYNC1H1-related disorders are primarily characterized by an axonal neuropathy with a wide phenotypic spectrum ranging from a neuromuscular-only phenotype (DYNC1H1-related neuromuscular disorder, or DYNC1H1-NMD) to phenotypes involving both the central nervous system and peripheral nervous system referred to collectively as DYNC1H1-related neurodevelopmental disorder (DYNC1H1-NDD). DYNC1H1-NMD manifestations are limited to the peripheral nervous system and characterized predominantly by motor neuropathy initially most pronounced in the lower limbs; muscle weakness and atrophy variably associated with foot deformities, contractures, and other skeletal involvement; and/or delayed motor milestones. DYNC1H1-NDD manifestations include motor axonal neuropathy and often global developmental delay / intellectual disability, epilepsy, neurobehavioral/psychiatric manifestations, and movement disorders with or without malformations of cortical development and/or microcephaly. In an individual with more significant central nervous system involvement, the motor axonal neuropathy may not be evident clinically and, thus, is only detected on further evaluation such as electrophysiologic testing.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482832">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482865"><div><strong>Baraitser-winter syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482865</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3281235</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Baraitser-Winter cerebrofrontofacial (BWCFF) syndrome is a multiple congenital anomaly syndrome characterized by typical craniofacial features and intellectual disability. Many (but not all) affected individuals have pachygyria that is predominantly frontal, wasting of the shoulder girdle muscles, and sensory impairment due to iris or retinal coloboma and/or sensorineural deafness. Intellectual disability, which is common but variable, is related to the severity of the brain malformations. Seizures, congenital heart defects, renal malformations, and gastrointestinal dysfunction are also common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482865">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_483052"><div><strong>Developmental and epileptic encephalopathy, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>483052</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3463992</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-1 (DEE1) is a severe form of epilepsy characterized by frequent tonic seizures or spasms beginning in infancy with a specific EEG finding of suppression-burst patterns, characterized by high-voltage bursts alternating with almost flat suppression phases. Approximately 75% of DEE1 patients progress to tonic spasms with clustering, arrest of psychomotor development, and hypsarrhythmia on EEG (Kato et al., 2007).&#13; DEE1 is part of a phenotypic spectrum of disorders caused by mutation in the ARX gene comprising a nearly continuous series of developmental disorders ranging from lissencephaly (LISX2; 300215) to Proud syndrome (300004) to infantile spasms without brain malformations (DEE) to syndromic (309510) and nonsyndromic (300419) mental retardation. Although males with ARX mutations are often more severely affected, female mutation carriers may also be affected (Kato et al., 2004; Wallerstein et al., 2008).&#13; Reviews&#13; Deprez et al. (2009) reviewed the genetics of epilepsy syndromes starting in the first year of life and included a diagnostic algorithm.&#13; Genetic Heterogeneity of Developmental and Epileptic Encephalopathy&#13; Also see DEE2 (300672), caused by mutation in the CDKL5 gene (300203); DEE3 (609304), caused by mutation in the SLC25A22 gene (609302); DEE4 (612164), caused by mutation in the STXBP1 gene (602926); DEE5 (613477), caused by mutation in the SPTAN1 gene (182810); DEE6A (607208), also known as Dravet syndrome, caused by mutation in the SCN1A gene (182389); DEE6B (619317), also caused by mutation in the SCN1A gene; DEE7 (613720), caused by mutation in the KCNQ2 gene (602235); DEE8 (300607), caused by mutation in the ARHGEF9 gene (300429); DEE9 (300088), caused by mutation in the PCDH19 gene (300460); DEE10 (613402), caused by mutation in the PNKP gene (605610); DEE11 (613721), caused by mutation in the SCN2A gene (182390); DEE12 (613722), caused by mutation in the PLCB1 gene (607120); DEE13 (614558), caused by mutation in the SCN8A gene (600702); DEE14 (614959), caused by mutation in the KCNT1 gene (608167); DEE15 (615006), caused by mutation in the ST3GAL3 gene (606494); DEE16 (615338), caused by mutation in the TBC1D24 gene (613577); DEE17 (615473), caused by mutation in the GNAO1 gene (139311); DEE18 (615476), caused by mutation in the SZT2 gene (615463); DEE19 (615744), caused by mutation in the GABRA1 gene (137160); DEE20 (300868), caused by mutation in the PIGA gene (311770); DEE21 (615833), caused by mutation in the NECAP1 gene (611623); DEE22 (300896), caused by mutation in the SLC35A2 gene (314375); DEE23 (615859), caused by mutation in the DOCK7 gene (615730); DEE24 (615871), caused by mutation in the HCN1 gene (602780); DEE25 (615905), caused by mutation in the SLC13A5 gene (608305); DEE26 (616056), caused by mutation in the KCNB1 gene (600397); DEE27 (616139), caused by mutation in the GRIN2B gene (138252); DEE28 (616211), caused by mutation in the WWOX gene (605131); DEE29 (616339), caused by mutation in the AARS gene (601065); DEE30 (616341), caused by mutation in the SIK1 gene (605705); DEE31A (616346) and DEE31B (620352), caused by mutation in the DNM1 gene (602377); DEE32 (616366), caused by mutation in the KCNA2 gene (176262); DEE33 (616409), caused by mutation in the EEF1A2 gene (602959); DEE34 (616645), caused by mutation in the SLC12A5 gene (606726); DEE35 (616647), caused by mutation in the ITPA gene (147520); DEE36 (300884), caused by mutation in the ALG13 gene (300776); DEE37 (616981), caused by mutation in the FRRS1L gene (604574); DEE38 (617020), caused by mutation in the ARV1 gene (611647); DEE39 (612949), caused by mutation in the SLC25A12 gene (603667); DEE40 (617065), caused by mutation in the GUF1 gene (617064); DEE41 (617105), caused by mutation in the SLC1A2 gene (600300); DEE42 (617106), caused by mutation in the CACNA1A gene (601011); DEE43 (617113), caused by mutation in the GABRB3 gene (137192); DEE44 (617132), caused by mutation in the UBA5 gene (610552); DEE45 (617153), caused by mutation in the GABRB1 gene (137190); DEE46 (617162), caused by mutation in the GRIN2D gene (602717); DEE47 (617166), caused by mutation in the FGF12 gene (601513); DEE48 (617276), caused by mutation in the AP3B2 gene (602166); DEE49 (617281), caused by mutation in the DENND5A gene (617278); DEE50 (616457) caused by mutation in the CAD gene (114010); DEE51 (617339), caused by mutation in the MDH2 gene (154100); DEE52 (617350), caused by mutation in the SCN1B gene (600235); DEE53 (617389), caused by mutation in the SYNJ1 gene (604297); DEE54 (617391), caused by mutation in the HNRNPU gene (602869); DEE55 (617599), caused by mutation in the PIGP gene (605938); DEE56 (617665), caused by mutation in the YWHAG gene (605356); DEE57 (617771), caused by mutation in the KCNT2 gene (610044); DEE58 (617830), caused by mutation in the NTRK2 gene (600456); DEE59 (617904), caused by mutation in the GABBR2 gene (607340); DEE60 (617929), caused by mutation in the CNPY3 gene (610774); DEE61 (617933), caused by mutation in the ADAM22 gene (603709); DEE62 (617938), caused by mutation in the SCN3A gene (182391); DEE63 (617976), caused by mutation in the CPLX1 gene (605032); DEE64 (618004), caused by mutation in the RHOBTB2 gene (607352); DEE65 (618008), caused by mutation in the CYFIP2 gene (606323); DEE66 (618067), caused by mutation in the PACS2 gene (610423); DEE67 (618141), caused by mutation in the CUX2 gene (610648); DEE68 (618201), caused by mutation in the TRAK1 gene (608112); DEE69 (618285), caused by mutation in the CACNA1E gene (601013); DEE70 (618298) caused by mutation in the PHACTR1 gene (608723); DEE71 (618328), caused by mutation in the GLS gene (138280); DEE72 (618374), caused by mutation in the NEUROD2 gene (601725); DEE73 (618379), caused by mutation in the RNF13 gene (609247); DEE74 (618396), caused by mutation in the GABRG2 gene (137164); DEE75 (618437), caused by mutation in the PARS2 gene (612036); DEE76 (618468), caused by mutation in the ACTL6B gene (612458); DEE77 (618548), caused by mutation in the PIGQ gene (605754); DEE78 (618557), caused by mutation in the GABRA2 gene (137140); DEE79 (618559), caused by mutation in the GABRA5 gene (137142); DEE80 (618580), caused by mutation in the PIGB gene (604122); DEE81 (618663), caused by mutation in the DMXL2 gene (612186); DEE82 (618721), caused by mutation in the GOT2 gene (138150); DEE83 (618744), caused by mutation in the UGP2 gene (191760); DEE84 (618792), caused by mutation in the UGDH gene (603370); DEE85 (301044), caused by mutation in the SMC1A gene (300040); DEE86 (618910), caused by mutation in the DALRD3 gene (618904); DEE87 (618916), caused by mutation in the CDK19 gene (614720); DEE88 (618959), caused by mutation in the MDH1 gene (152400); DEE89 (619124), caused by mutation in the GAD1 gene (605363); DEE90 (301058), caused by mutation in the FGF13 gene (300070); DEE91 (617711), caused by mutation in the PPP3CA gene (114105); DEE92 (617829), caused by mutation in the GABRB2 gene (600232); DEE93 (618012), caused by mutation in the ATP6V1A gene (607027); DEE94 (615369), caused by mutation in the CHD2 gene (602119); DEE95 (618143), caused by mutation in the PIGS gene (610271); DEE96 (619340), caused by mutation in the NSF gene (601633); DEE97 (619561), caused by mutation in the iCELF2 gene (602538); DEE98 (619605), caused by mutation in the ATP1A2 gene (182340); DEE99 (619606), caused by mutation in the ATP1A3 gene (182350); DEE100 (619777), caused by mutation in the FBXO28 gene (609100); DEE101 (619814), caused by mutation in the GRIN1 gene (138249); DEE102 (619881), caused by mutation in the SLC38A3 gene (604437); DEE103 (619913), caused by mutation in the KCNC2 gene (176256); DEE104 (619970), caused by mutation in the ATP6V0A1 gene (192130); DEE105 (619983), caused by mutation in the HID1 gene (605752); DEE106 (620028), caused by mutation in the UFSP2 gene (611482); DEE107 (620033), caused by mutation in the NAPB gene (</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/483052">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_483324"><div><strong>Fanconi anemia complementation group C</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>483324</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3468041</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fanconi anemia (FA) is characterized by physical abnormalities, bone marrow failure, and increased risk for malignancy. Physical abnormalities, present in approximately 75% of affected individuals, include one or more of the following: short stature, abnormal skin pigmentation, skeletal malformations of the upper and/or lower limbs, microcephaly, and ophthalmic and genitourinary tract anomalies. Progressive bone marrow failure with pancytopenia typically presents in the first decade, often initially with thrombocytopenia or leukopenia. The incidence of acute myeloid leukemia is 13% by age 50 years. Solid tumors – particularly of the head and neck, skin, and genitourinary tract – are more common in individuals with FA.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/483324">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_483333"><div><strong>Fanconi anemia complementation group A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>483333</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3469521</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fanconi anemia (FA) is characterized by physical abnormalities, bone marrow failure, and increased risk for malignancy. Physical abnormalities, present in approximately 75% of affected individuals, include one or more of the following: short stature, abnormal skin pigmentation, skeletal malformations of the upper and/or lower limbs, microcephaly, and ophthalmic and genitourinary tract anomalies. Progressive bone marrow failure with pancytopenia typically presents in the first decade, often initially with thrombocytopenia or leukopenia. The incidence of acute myeloid leukemia is 13% by age 50 years. Solid tumors – particularly of the head and neck, skin, and genitourinary tract – are more common in individuals with FA.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/483333">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_483740"><div><strong>Non-acquired combined pituitary hormone deficiency with spine abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>483740</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3489787</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Combined pituitary hormone deficiency-3 (CPHD3) is an autosomal recessive disorder characterized by hypopituitarism with structural anterior pituitary defects and cervical abnormalities with or without restricted neck rotation. Some patients have sensorineural hearing loss (summary by Rajab et al., 2008).&#13; For a discussion of phenotypic and genetic heterogeneity of combined pituitary hormone deficiency, see CPHD1 (613038).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/483740">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_488447"><div><strong>Pseudohypoparathyroidism type I A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>488447</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3494506</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Disorders of GNAS inactivation include the phenotypes pseudohypoparathyroidism Ia, Ib, and Ic (PHP-Ia, -Ib, -Ic), pseudopseudohypoparathyroidism (PPHP), progressive osseous heteroplasia (POH), and osteoma cutis (OC). PHP-Ia and PHP-Ic are characterized by: End-organ resistance to endocrine hormones including parathyroid hormone (PTH), thyroid-stimulating hormone (TSH), gonadotropins (LH and FSH), growth hormone-releasing hormone (GHRH), and CNS neurotransmitters (leading to obesity and variable degrees of intellectual disability and developmental delay); and The Albright hereditary osteodystrophy (AHO) phenotype (short stature, round facies, and subcutaneous ossifications) and brachydactyly type E (shortening mainly of the 4th and/or 5th metacarpals and metatarsals and distal phalanx of the thumb). Although PHP-Ib is characterized principally by PTH resistance, some individuals also have partial TSH resistance and mild features of AHO (e.g., brachydactyly). PPHP, a more limited form of PHP-Ia, is characterized by various manifestations of the AHO phenotype without the hormone resistance or obesity. POH and OC are even more restricted variants of PPHP: POH consists of dermal ossification beginning in infancy, followed by increasing and extensive bone formation in deep muscle and fascia. OC consists of extra-skeletal ossification that is limited to the dermis and subcutaneous tissues.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/488447">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_501171"><div><strong>Craniofacial microsomia 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>501171</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3495417</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Craniofacial microsomia is a term used to describe a spectrum of abnormalities that primarily affect the development of the skull (cranium) and face before birth. Microsomia means abnormal smallness of body structures. Most people with craniofacial microsomia have differences in the size and shape of facial structures between the right and left sides of the face (facial asymmetry). In about two-thirds of cases, both sides of the face have abnormalities, which usually differ from one side to the other. Other individuals with craniofacial microsomia are affected on only one side of the face. The facial characteristics in craniofacial microsomia typically include underdevelopment of one side of the upper or lower jaw (maxillary or mandibular hypoplasia), which can cause dental problems and difficulties with feeding and speech. In cases of severe mandibular hypoplasia, breathing may also be affected.\n\nPeople with craniofacial microsomia usually have ear abnormalities affecting one or both ears, typically to different degrees. They may have growths of skin (skin tags) in front of the ear (preauricular tags), an underdeveloped or absent external ear (microtia or anotia), or a closed or absent ear canal; these abnormalities may lead to hearing loss. Eye problems are less common in craniofacial microsomia, but some affected individuals have an unusually small eyeball (microphthalmia) or other eye abnormalities that result in vision loss.\n\nAbnormalities in other parts of the body, such as malformed bones of the spine (vertebrae), abnormally shaped kidneys, and heart defects, may also occur in people with craniofacial microsomia.\n\nMany other terms have been used for craniofacial microsomia. These other names generally refer to forms of craniofacial microsomia with specific combinations of signs and symptoms, although sometimes they are used interchangeably. Hemifacial microsomia often refers to craniofacial microsomia with maxillary or mandibular hypoplasia. People with hemifacial microsomia and noncancerous (benign) growths in the eye called epibulbar dermoids may be said to have Goldenhar syndrome or oculoauricular dysplasia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/501171">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_501203"><div><strong>Carnosinemia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>501203</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3495555</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare inborn error of metabolism characterized by low serum carnosinase activity, persistent carnosinuria, and carnosinemia. The clinical phenotype is highly variable, with some patients remaining asymptomatic, while others have been reported to show severe developmental delay, intellectual disability, hypotonia, seizures, and other neurological signs and symptoms.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/501203">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_501249"><div><strong>Hereditary spastic paraplegia 35</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>501249</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3496228</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fatty acid hydroxylase-associated neurodegeneration (FAHN) is characterized early in the disease course by central nervous system involvement including corticospinal tract involvement (spasticity), mixed movement disorder (ataxia/dystonia), and eye findings (optic atrophy, oculomotor abnormalities), and later in the disease course by progressive intellectual impairment and seizures. With disease progression, dystonia and spasticity compromise the ability to ambulate, leading to wheelchair dependence. Life expectancy is variable. FAHN is considered to be a subtype of neurodegeneration with brain iron accumulation (NBIA).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/501249">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_501947"><div><strong>X-linked intellectual disability-seizures-psoriasis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>501947</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3501539</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare, X-linked syndromic intellectual disability disorder characterized by severe intellectual disability, psychomotor developmental delay, generalized seizures, and psoriasis. Mild craniofacial dysmorphism, such as hypertelorism, broad nasal bridge, anteverted nares, macrostomia, highly arched palate and large ears, is also associated. There have been no further descriptions in the literature since 1988.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/501947">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_761341"><div><strong>Hereditary spastic paraplegia 54</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>761341</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3539495</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia-54 (SPG54) is a complicated form of spastic paraplegia, a neurodegenerative disorder affecting fibers of the corticospinal tract. Affected individuals have delayed psychomotor development, intellectual disability, and early-onset spasticity of the lower limbs. Brain MRI shows a thin corpus callosum and periventricular white matter lesions. Brain magnetic resonance spectroscopy shows an abnormal lipid peak (summary by Schuurs-Hoeijmakers et al., 2012).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of autosomal recessive spastic paraplegia, see 270800.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/761341">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_761342"><div><strong>Hereditary spastic paraplegia 55</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>761342</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3539506</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare complex type of hereditary spastic paraplegia with characteristics of childhood onset of progressive spastic paraplegia associated with optic atrophy (with reduced visual acuity and central scotoma), ophthalmoplegia, reduced upper-extremity strength and dexterity, muscular atrophy in the lower extremities and sensorimotor neuropathy. Caused by mutations in the C12ORF65 gene (12q24.31) encoding probable peptide chain release factor C12ORF65, mitochondrial.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/761342">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_761343"><div><strong>Hereditary spastic paraplegia 56</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>761343</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3539507</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia-56 with or without pseudoxanthoma elasticum (SPG56) is an autosomal recessive neurodegenerative disorder characterized by early-onset progressive lower-limb spasticity resulting in walking difficulties. Upper limbs are often also affected, and some patients may have a subclinical axonal neuropathy (summary by Tesson et al., 2012). Some patients also have pseudoxanthoma elasticum (Legrand et al., 2021).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of autosomal recessive spastic paraplegia, see 270800.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/761343">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_762040"><div><strong>Pontine tegmental cap dysplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>762040</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3541340</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pontine tegmental cap dysplasia (PTCD) refers to a neurologic condition characterized by a distinct pattern of hindbrain malformations apparent on brain imaging. The abnormalities affect the pons, medulla, and cerebellum. In neuroradiologic studies, the ventral side of the pons is flattened, whereas there is vaulting ('capping') of the dorsal pontine border into the fourth ventricle. Affected individuals show a variety of neurologic deficits, most commonly sensorineural deafness, impaired cranial nerve function, and variable psychomotor retardation (summary by Barth et al., 2007).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/762040">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_762097"><div><strong>Mitochondrial complex III deficiency nuclear type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>762097</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3541471</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive mitochondrial complex III deficiency is a severe multisystem disorder with onset at birth of lactic acidosis, hypotonia, hypoglycemia, failure to thrive, encephalopathy, and delayed psychomotor development. Visceral involvement, including hepatopathy and renal tubulopathy, may also occur. Many patients die in early childhood, but some may show longer survival (de Lonlay et al., 2001; De Meirleir et al., 2003).&#13; Genetic Heterogeneity of Mitochondrial Complex III Deficiency&#13; Mitochondrial complex III deficiency can be caused by mutation in several different nuclear-encoded genes. See MC3DN2 (615157), caused by mutation in the TTC19 gene (613814) on chromosome 17p12; MC3DN3 (615158), caused by mutation in the UQCRB gene (191330) on chromosome 8q; MC3DN4 (615159), caused by mutation in the UQCRQ gene (612080) on chromosome 5q31; MC3DN5 (615160), caused by mutation in the UQCRC2 gene (191329) on chromosome 16p12; MC3DN6 (615453), caused by mutation in the CYC1 gene (123980) on chromosome 8q24; MC3DN7 (615824), caused by mutation in the UQCC2 gene (614461) on chromosome 6p21; MC3DN8 (615838), caused by mutation in the LYRM7 gene (615831) on chromosome 5q23; MC3DN9 (616111), caused by mutation in the UQCC3 gene (616097) on chromosome 11q12; and MC3DN10 (618775), caused by mutation in the UQCRFS1 gene (191327) on chromosome 19q12.&#13; See also MTYCB (516020) for a discussion of a milder phenotype associated with isolated mitochondrial complex III deficiency and mutations in a mitochondrial-encoded gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/762097">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_762102"><div><strong>Congenital myopathy 10b, mild variant</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>762102</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3541476</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital myopathy-10B (CMYO10B) is an autosomal recessive skeletal muscle disorder characterized by infantile- or childhood-onset myopathy, areflexia, dysphagia, and respiratory distress that usually requires nocturnal ventilation. Other common features include facial and neck muscle weakness, feeding difficulties, contractures, scoliosis, high-arched palate, hyporeflexia, and difficulties walking. The disorder is slowly progressive and most patients follow a chronic course. Muscle biopsy shows variable findings, including type 1 fiber predominance, minicore lesions, and myofibrillar disorganization (Boyden et al., 2012; Harris et al., 2018).&#13; Patients with missense mutations affecting conserved cysteine residues in the EGF-like domain show the mild variant phenotype (CMYO10B) with later onset of respiratory failure and minicores on muscle biopsy, whereas patients with more damaging mutations, including nonsense or frameshift null mutations, show the severe variant phenotype (CMYO10A) (Croci et al., 2022).&#13; For a discussion of genetic heterogeneity of congenital myopathy, see CMYO1A (117000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/762102">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_762260"><div><strong>Hereditary spastic paraplegia 49</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>762260</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3542549</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">TECPR2-related hereditary sensory and autonomic neuropathy with intellectual disability (TECPR2-HSAN with ID) is characterized by developmental delay and subsequent intellectual disability, behavioral abnormalities, neurologic manifestations (muscular hypotonia, sensory neuropathy with lower-limb hypo- or areflexia and ataxic gait), and autonomic dysfunction (including central hypoventilation and apnea, gastrointestinal dysmotility, dysphagia, and gastroesophageal reflux disease with recurrent aspiration). To date, more than 30 individuals with TECPR2-HSAN with ID have been identified.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/762260">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_762361"><div><strong>Alternating hemiplegia of childhood 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>762361</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3549447</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Alternating hemiplegia of childhood is a rare syndrome of episodic hemi- or quadriplegia lasting minutes to days. Most cases are accompanied by dystonic posturing, choreoathetoid movements, nystagmus, other ocular motor abnormalities, autonomic disturbances, and progressive cognitive impairment (Mikati et al., 1992).&#13; The disorder may mimic or overlap with other disorders, including familial hemiplegic migraine (FHM1; 141500) and GLUT1 deficiency syndrome (606777) (Rotstein et al., 2009).&#13; Genetic Heterogeneity of Alternating Hemiplegia of Childhood&#13; See also AHC2 (614820), caused by mutation in the ATP1A3 gene (182350).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/762361">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_763148"><div><strong>Peroxisome biogenesis disorder 2B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>763148</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3550234</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Zellweger spectrum disorder (ZSD) is a phenotypic continuum ranging from severe to mild. While individual phenotypes (e.g., Zellweger syndrome [ZS], neonatal adrenoleukodystrophy [NALD], and infantile Refsum disease [IRD]) were described in the past before the biochemical and molecular bases of this spectrum were fully determined, the term "ZSD" is now used to refer to all individuals with a defect in one of the ZSD-PEX genes regardless of phenotype. Individuals with ZSD usually come to clinical attention in the newborn period or later in childhood. Affected newborns are hypotonic and feed poorly. They have distinctive facies, congenital malformations (neuronal migration defects associated with neonatal-onset seizures, renal cysts, and bony stippling [chondrodysplasia punctata] of the patella[e] and the long bones), and liver disease that can be severe. Infants with severe ZSD are significantly impaired and typically die during the first year of life, usually having made no developmental progress. Individuals with intermediate/milder ZSD do not have congenital malformations, but rather progressive peroxisome dysfunction variably manifest as sensory loss (secondary to retinal dystrophy and sensorineural hearing loss), neurologic involvement (ataxia, polyneuropathy, and leukodystrophy), liver dysfunction, adrenal insufficiency, and renal oxalate stones. While hypotonia and developmental delays are typical, intellect can be normal. Some have osteopenia; almost all have ameleogenesis imperfecta in the secondary teeth.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/763148">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_763187"><div><strong>Peroxisome biogenesis disorder 2A (Zellweger)</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>763187</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3550273</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The peroxisome biogenesis disorder (PBD) Zellweger syndrome (ZS) is an autosomal recessive multiple congenital anomaly syndrome. Affected children present in the newborn period with profound hypotonia, seizures, and inability to feed. Characteristic craniofacial anomalies, eye abnormalities, neuronal migration defects, hepatomegaly, and chondrodysplasia punctata are present. Children with this condition do not show any significant development and usually die in the first year of life (summary by Steinberg et al., 2006).&#13; For a complete phenotypic description and a discussion of genetic heterogeneity of Zellweger syndrome, see 214100.&#13; Individuals with PBDs of complementation group 2 (CG2) have mutations in the PEX5 gene. For information on the history of PBD complementation groups, see 214100.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/763187">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_763607"><div><strong>Peroxisome biogenesis disorder type 3B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>763607</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3550693</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Zellweger spectrum disorder (ZSD) is a phenotypic continuum ranging from severe to mild. While individual phenotypes (e.g., Zellweger syndrome [ZS], neonatal adrenoleukodystrophy [NALD], and infantile Refsum disease [IRD]) were described in the past before the biochemical and molecular bases of this spectrum were fully determined, the term "ZSD" is now used to refer to all individuals with a defect in one of the ZSD-PEX genes regardless of phenotype. Individuals with ZSD usually come to clinical attention in the newborn period or later in childhood. Affected newborns are hypotonic and feed poorly. They have distinctive facies, congenital malformations (neuronal migration defects associated with neonatal-onset seizures, renal cysts, and bony stippling [chondrodysplasia punctata] of the patella[e] and the long bones), and liver disease that can be severe. Infants with severe ZSD are significantly impaired and typically die during the first year of life, usually having made no developmental progress. Individuals with intermediate/milder ZSD do not have congenital malformations, but rather progressive peroxisome dysfunction variably manifest as sensory loss (secondary to retinal dystrophy and sensorineural hearing loss), neurologic involvement (ataxia, polyneuropathy, and leukodystrophy), liver dysfunction, adrenal insufficiency, and renal oxalate stones. While hypotonia and developmental delays are typical, intellect can be normal. Some have osteopenia; almost all have ameleogenesis imperfecta in the secondary teeth.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/763607">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_763789"><div><strong>Epsilon-trimethyllysine hydroxylase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>763789</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3550875</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked autism-6 is a neurodevelopmental disorder that affects only males. Some patients may respond favorably to carnitine supplementation (summary by Ziats et al., 2015).&#13; Autism, the prototypic pervasive developmental disorder (PDD), is usually apparent by 3 years of age. It is characterized by a triad of limited or absent verbal communication, a lack of reciprocal social interaction or responsiveness, and restricted, stereotypic, and ritualized patterns of interests and behavior (Bailey et al., 1996; Risch et al., 1999). 'Autism spectrum disorder,' sometimes referred to as ASD, is a broader phenotype encompassing the less severe disorders Asperger syndrome (see ASPG1; 608638) and pervasive developmental disorder, not otherwise specified (PDD-NOS). 'Broad autism phenotype' includes individuals with some symptoms of autism, but who do not meet the full criteria for autism or other disorders. Mental retardation coexists in approximately two-thirds of individuals with ASD, except for Asperger syndrome, in which mental retardation is conspicuously absent (Jones et al., 2008). Genetic studies in autism often include family members with these less stringent diagnoses (Schellenberg et al., 2006).&#13; For a discussion of heterogeneity of autism, see 209850.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/763789">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_763817"><div><strong>Cornelia de Lange syndrome 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>763817</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3550903</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cornelia de Lange syndrome (CdLS) encompasses a spectrum of findings from mild to severe. Severe (classic) CdLS is characterized by distinctive facial features, growth restriction (prenatal onset; &lt;5th centile throughout life), hypertrichosis, and upper-limb reduction defects that range from subtle phalangeal abnormalities to oligodactyly (missing digits). Craniofacial features include synophrys, highly arched and/or thick eyebrows, long eyelashes, short nasal bridge with anteverted nares, small widely spaced teeth, and microcephaly. Individuals with a milder phenotype have less severe growth, cognitive, and limb involvement, but often have facial features consistent with CdLS. Across the CdLS spectrum IQ ranges from below 30 to 102 (mean: 53). Many individuals demonstrate autistic and self-destructive tendencies. Other frequent findings include cardiac septal defects, gastrointestinal dysfunction, hearing loss, myopia, and cryptorchidism or hypoplastic genitalia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/763817">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_763835"><div><strong>Linear skin defects with multiple congenital anomalies 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>763835</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3550921</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Microphthalmia with linear skin defects (MLS) syndrome is characterized by unilateral or bilateral microphthalmia and/or anophthalmia and linear skin defects, usually involving the face and neck, which are present at birth and heal with age, leaving minimal residual scarring. Other findings can include a wide variety of other ocular abnormalities (e.g., corneal anomalies, orbital cysts, cataracts), central nervous system involvement (e.g., structural anomalies, developmental delay, infantile seizures), cardiac concerns (e.g., hypertrophic or oncocytic cardiomyopathy, atrial or ventricular septal defects, arrhythmias), short stature, diaphragmatic hernia, nail dystrophy, hearing impairment, and genitourinary malformations. Inter- and intrafamilial variability is described.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/763835">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_763887"><div><strong>Neurodegeneration with brain iron accumulation 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>763887</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3550973</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Beta-propeller protein-associated neurodegeneration (BPAN) is typically characterized by early-onset seizures, infantile-onset developmental delay, intellectual disability, absent-to-limited expressive language, motor dysfunction (ataxia), and abnormal behaviors often similar to autism spectrum disorder. Seizure types including generalized (absence, tonic, atonic, tonic-clonic and myoclonic), focal with impaired consciousness, and epileptic spasms, as well as epileptic syndromes (West syndrome and Lennox-Gastaut syndrome) can be seen. With age seizures tend to resolve or become less prominent, whereas cognitive decline and movement disorders (progressive parkinsonism and dystonia) emerge as characteristic findings.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/763887">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_763933"><div><strong>Choroideremia-deafness-obesity syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>763933</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3551019</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An X-linked retinal dystrophy characterized by choroideremia, causing in affected males progressive nyctalopia and eventual central blindness. Obesity, moderate intellectual disability and congenital mixed (sensorineural and conductive) deafness are also observed. Female carriers show typical retinal changes indicative of the choroideremia carrier state.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/763933">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_764868"><div><strong>Coenzyme Q10 deficiency, primary, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>764868</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3551954</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Primary CoQ10 deficiency is a rare, clinically heterogeneous autosomal recessive disorder caused by mutation in any of the genes encoding proteins directly involved in the synthesis of coenzyme Q (review by Quinzii and Hirano, 2011). Coenzyme Q10 (CoQ10), or ubiquinone, is a mobile lipophilic electron carrier critical for electron transfer by the mitochondrial inner membrane respiratory chain (Duncan et al., 2009).&#13; The disorder has been associated with 4 major phenotypes, but the molecular basis has not been determined in most patients with the disorder and there are no clear genotype/phenotype correlations. The phenotypes include an encephalomyopathic form with seizures and ataxia (Ogasahara et al., 1989); a multisystem infantile form with encephalopathy, cardiomyopathy and renal failure (Rotig et al., 2000); a predominantly cerebellar form with ataxia and cerebellar atrophy (Lamperti et al., 2003); and Leigh syndrome with growth retardation (van Maldergem et al., 2002). The correct diagnosis is important because some patients may show a favorable response to CoQ10 treatment.&#13; Genetic Heterogeneity of Primary Coenzyme Q10 Deficiency&#13; See also COQ10D2 (614651), caused by mutation in the PDSS1 gene (607429) on chromosome 10p12; COQ10D3 (614652), caused by mutation in the PDSS2 gene (610564) on chromosome 6q21; COQ10D4 (612016), caused by mutation in the COQ8 gene (ADCK3; 606980) on chromosome 1q42; COQ10D5 (614654), caused by mutation in the COQ9 gene (612837) on chromosome 16q21; COQ10D6 (614650), caused by mutation in the COQ6 gene (614647) on chromosome 14q24; COQ10D7 (616276), caused by mutation in the COQ4 gene (612898) on chromosome 9q34; COQ10D8 (616733), caused by mutation in the COQ7 gene (601683) on chromosome 16p13; and COQ10D9 (619028), caused by mutation in the COQ5 gene (616359) on chromosome 12q24.&#13; Secondary CoQ10 deficiency has been reported in association with glutaric aciduria type IIC (MADD; 231680), caused by mutation in the ETFDH gene (231675) on chromosome 4q, and with ataxia-oculomotor apraxia syndrome-1 (AOA1; 208920), caused by mutation in the APTX gene (606350) on chromosome 9p13.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/764868">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_765150"><div><strong>Complex cortical dysplasia with other brain malformations 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>765150</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3552236</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Complex cortical dysplasia with other brain malformations-7 is an autosomal dominant, clinically heterogeneous disorder showing a wide spectrum of abnormalities of cortical brain development. The most severely affected patients are fetuses with microlissencephaly, absence of the cortical plate, agenesis of the corpus callosum, and severely hypoplastic brainstem and cerebellum. Other patients have lissencephaly, polymicrogyria, cortical dysplasia, or neuronal heterotopia. Those with less severe malformations can survive, but usually have some degree of neurologic impairment, such as mental retardation, seizures, and movement abnormalities (summary by Chang et al., 2006; Fallet-Bianco et al., 2014).&#13; For a discussion of genetic heterogeneity of CDCBM, see CDCBM1 (614039).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/765150">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766144"><div><strong>COG6-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766144</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553230</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CDG2L is an autosomal recessive multisystem disorder apparent from birth or early infancy. It is characterized by poor growth, gastrointestinal and liver abnormalities, delayed psychomotor development, hypotonia, recurrent infections, hematologic abnormalities, increased bleeding tendency, and hyperhidrosis or hyperkeratosis. More variable features include nonspecific dysmorphic facial features and cardiac septal defects. The disorder often results in death in infancy or the first years of life (summary by Rymen et al., 2015).&#13; For a general discussion of CDGs, see CDG1A (212065) and CDG2A (212066).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766144">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766161"><div><strong>Intellectual disability, autosomal dominant 14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766161</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553247</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Coffin-Siris syndrome is a congenital malformation syndrome characterized by developmental delay, intellectual disability, coarse facial features, feeding difficulties, and hypoplastic or absent fifth fingernails and fifth distal phalanges. Other more variable features may also occur. Patients with ARID1A mutations have a wide spectrum of manifestations, from severe intellectual disability and serious internal complications that could result in early death to mild intellectual disability (summary by Kosho et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Coffin-Siris syndrome, see CSS1 (135900).&#13; The chromosome 1p36.11 duplication syndrome, in which the ARID1A gene is duplicated, is characterized by impaired intellectual development, microcephaly, dysmorphic facial features, and hand and foot anomalies.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766161">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766162"><div><strong>Intellectual disability, autosomal dominant 15</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766162</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553248</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Coffin-Siris syndrome is a congenital malformation syndrome characterized by developmental delay, intellectual disability, coarse facial features, feeding difficulties, and hypoplastic or absent fifth fingernails and fifth distal phalanges. Other more variable features may also occur. Patients with SMARCB1 mutations may have more severe neurodevelopmental deficits including severe intellectual disability, brain structural abnormalities, and no expressive words, as well as scoliosis (summary by Kosho et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Coffin-Siris syndrome, see CSS1 (135900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766162">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766163"><div><strong>Intellectual disability, autosomal dominant 16</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766163</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553249</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Coffin-Siris syndrome is a congenital malformation syndrome characterized by developmental delay, intellectual disability, coarse facial features, feeding difficulties, and hypoplastic or absent fifth fingernails and fifth distal phalanges. Other more variable features may also occur. Patients with SMARCA4 mutations may have less coarse craniofacial appearances and fewer behavioral abnormalities than Coffin-Siris patients with mutations in other genes (summary by Kosho et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Coffin-Siris syndrome, see CSS1 (135900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766163">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766164"><div><strong>Acrodysostosis 2 with or without hormone resistance</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766164</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553250</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Acrodysostosis-2 (ACRDYS2) is a rare skeletal dysplasia characterized by brachydactyly, facial dysostosis, and spinal stenosis. Many patients have intellectual disability and some have hormone resistance (summary by Michot et al., 2012 and Lee et al., 2012).&#13; For a discussion of genetic heterogeneity of acrodysostosis, see ACRDYS1 (101800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766164">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766205"><div><strong>Hyperekplexia 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766205</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553291</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary hyperekplexia is a condition in which affected infants have increased muscle tone (hypertonia) and an exaggerated startle reaction to unexpected stimuli, especially loud noises. Following the startle reaction, infants experience a brief period in which they are very rigid and unable to move. During these rigid periods, some infants stop breathing, which, if prolonged, can be fatal. Infants with hereditary hyperekplexia have hypertonia at all times, except when they are sleeping.\n\nOther signs and symptoms of hereditary hyperekplexia can include muscle twitches when falling asleep (hypnagogic myoclonus) and movements of the arms or legs while asleep. Some infants, when tapped on the nose, extend their head forward and have spasms of the limb and neck muscles. Rarely, infants with hereditary hyperekplexia experience recurrent seizures (epilepsy).\n\nThe signs and symptoms of hereditary hyperekplexia typically fade by age 1. However, older individuals with hereditary hyperekplexia may still startle easily and have periods of rigidity, which can cause them to fall down. They may also continue to have hypnagogic myoclonus or movements during sleep. As they get older, individuals with this condition may have a low tolerance for crowded places and loud noises. People with hereditary hyperekplexia who have epilepsy have the seizure disorder throughout their lives.\n\nHereditary hyperekplexia may explain some cases of sudden infant death syndrome (SIDS), which is a major cause of unexplained death in babies younger than 1 year.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766205">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766321"><div><strong>Chromosome 16p11.2 duplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766321</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553407</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">16p11.2 duplication is a chromosomal change in which a small amount of genetic material within chromosome 16 is abnormally copied (duplicated). The duplication occurs near the middle of the chromosome at a location designated p11.2. This duplication can have a variety of effects. Common characteristics that occur in people with a 16p11.2 duplication include a low weight; a small head size (microcephaly); and developmental delay, especially in speech and language. Affected individuals also have an increased risk of behavioral problems. However, some people with the duplication have no identified physical or behavioral abnormalities.\n\nDevelopmental delay and intellectual disability can occur in people with a 16p11.2 duplication. Approximately one-third of children with this condition have delays in developing physical skills such as sitting, crawling, or walking. The average IQ of affected individuals is about 26 points lower than that of their parents without the duplication. About 80 percent of people with a 16p11.2 duplication have problems related to speech or language. Both expressive language skills (vocabulary and the production of speech) and receptive language skills (the ability to understand speech) can be affected.\n\nOne of the most common behavioral problems associated with this chromosomal change is attention-deficit/hyperactivity disorder (ADHD). Autism spectrum disorder, which affects communication and social skills, is diagnosed in about one in five people with a 16p11.2 duplication. Affected individuals also have an increased risk of mental health problems, including schizophrenia, anxiety, and depression. Recurrent seizures are possible in this condition, although they do not occur in most affected individuals.\n\nOther abnormalities that can occur with a 16p11.2 duplication include malformations of the kidneys and urinary tract. However, there is no particular pattern of physical abnormalities that characterizes 16p11.2 duplications; signs and symptoms related to the chromosomal change vary even among affected members of the same family.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766321">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766496"><div><strong>Seckel syndrome 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766496</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553582</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any Seckel syndrome in which the cause of the disease is a mutation in the CEP63 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766496">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766551"><div><strong>Hyperphosphatasia with intellectual disability syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766551</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553637</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hyperphosphatasia with impaired intellectual development syndrome-2 (HPMRS2) is an autosomal recessive disorder characterized by moderately to severely delayed psychomotor development, facial dysmorphism, brachytelephalangy, and increased serum alkaline phosphatase (hyperphosphatasia). Some patients may have additional features, such as cardiac septal defects or seizures (summary by Krawitz et al., 2012). The disorder is caused by a defect in glycosylphosphatidylinositol (GPI) biosynthesis.&#13; For a discussion of genetic heterogeneity of hyperphosphatasia with impaired intellectual development syndrome, see HPMRS1 (239300).&#13; For a discussion of genetic heterogeneity of GPI biosynthesis defects, see GPIBD1 (610293).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766551">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766574"><div><strong>Malan overgrowth syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766574</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553660</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NFIX-related Malan syndrome (MALNS) is characterized by prenatal and postnatal overgrowth, macrocephaly, advanced bone age and/or skeletal anomalies (scoliosis, pes planus), slender body habitus, developmental delay / intellectual disability (typically in the moderate-to-severe range), behavioral problems (including a specific anxious profile and attention-deficit/hyperactivity disorder [ADHD]), and ocular findings (most commonly strabismus, refractive errors, and blue sclerae). Affected individuals typically have distinctive facial features, including a long and triangular face, high anterior hair line with prominent forehead, depressed nasal bridge, deep-set eyes, downslanted palpebral fissures, short nose with anteverted nares and upturned tip, long philtrum, small mouth that is often held open, thin vermilion of the upper lip, an everted lower lip, and a prominent chin. Other findings may include autonomic signs (episodic ataxia with dizziness and nausea and/or postural fainting), seizures or EEG abnormalities, hypotonia, dental anomalies, long bone fractures, and (rarely) congenital heart defects. Four individuals with aortic root dilatation have been reported, with one adult individual experiencing progressive aortic dilation and dissection at age 38 years. Additionally, one individual with rib osteosarcoma and another with Wilms tumor have been reported (an overall prevalence of malignancy of about 2%). Therefore, MALNS appears to be in the same low risk group as Sotos syndrome and Weaver syndrome with respect to a low likelihood of developing cancer.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766574">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766575"><div><strong>Cerebellar dysfunction with variable cognitive and behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766575</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553661</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebellar dysfunction with variable cognitive and behavioral abnormalities (CECBA) is an autosomal dominant neurologic disorder with significant phenotypic heterogeneity, even within families. The disorder is most often diagnosed through genetic analysis with retrospective clinical phenotyping. Symptom onset is usually in early childhood, although later onset, even in adulthood, has been reported. Most affected individuals show global developmental delay from early childhood, particularly of motor and language skills. Many have mild intellectual disability; behavioral and psychiatric abnormalities such as autism and obsessive-compulsive disorder are also often observed. The movement disorder is prominent and may include cerebellar signs such as ataxia, tremor, dysmetria, poor coordination, and dysarthria. Other abnormal movements including spasticity, myoclonus, and dystonia have been reported, thus widening the phenotypic spectrum. Brain imaging is usually normal, but may show cerebellar atrophy or nonspecific white matter lesions. Variable dysmorphic facial features may also be present (summary by Thevenon et al., 2012; Jacobs et al., 2021; Wijnen et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766575">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766672"><div><strong>Joubert syndrome 18</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766672</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553758</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766672">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766702"><div><strong>Alternating hemiplegia of childhood 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766702</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553788</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ATP1A3-related disorder consists of heterogenous overlapping clinical findings that pertain to the four most common historically defined phenotypes: alternating hemiplegia of childhood (AHC); cerebellar ataxia, areflexia, pes cavus, optic atrophy, sensorineural hearing loss (CAPOS) syndrome; relapsing encephalopathy with cerebellar ataxia (RECA) / fever-induced paroxysmal weakness and encephalopathy (FIPWE); and rapid-onset dystonia-parkinsonism (RDP). These phenotypes exist on a spectrum and should be regarded as classifications of convenience. AHC is characterized by onset prior to age 18 months of paroxysmal hemiplegic episodes, predominately involving the limbs and/or the whole body, lasting from minutes to hours to days (and sometimes weeks) with remission only during sleep, only to resume after awakening. Although paroxysmal episodic neurologic dysfunction predominates early in the disease course, with age increasingly persistent neurologic dysfunction predominates, including oculomotor apraxia and strabismus, dysarthria, speech and language delay, developmental delay, and impairment in social skills. Other system involvement may include cardiovascular (cardiac conduction abnormalities) and gastrointestinal (constipation, vomiting, anorexia, diarrhea, nausea, and abdominal pain) manifestations. CAPOS syndrome presents in infancy or childhood (usually ages 6 months to 5 years) with cerebellar ataxia during or after a fever. The acute febrile encephalopathy may include hypotonia, flaccidity, nystagmus, strabismus, dysarthria/anarthria, lethargy, loss of consciousness, and even coma. Usually, considerable recovery occurs within days to weeks; however, persistence of some degree of ataxia and other manifestations is typical. RECA/FIPWE primarily presents with fever-induced episodes (infancy to age 5 years); however, first episodes can occur occasionally in young adults during illnesses such as mononucleosis. Recurrent fever-induced episodes may be ataxia-dominated RECA-like motor manifestations or FIPWE-like non-motor manifestations (encephalopathy) and can vary among affected individuals. Notably, RECA-like and FIPWE-like manifestations can occur in the same individual in different episodes. In some individuals episodes seem to decrease in frequency and severity over time, whereas others might experience worsening of manifestations. RDP presents in individuals ages 18 months to 60 years and older with dystonia that is typically of abrupt onset over hours to several weeks, though some individuals report gradual onset over the course of months. A stress-related trigger is identifiable in up to 75% of individuals. Dystonia rarely improves significantly after onset; some individuals report mild improvement over time, whereas others can experience subsequent episodes of abrupt worsening months to years after onset. Limbs are usually the first to be affected, although by the time of diagnosis – typically many years after onset – individuals most commonly display a bulbar-predominant generalized dystonia. Exceptions are common and a rostrocaudal gradient is rare rather than typical. Migraines and seizures are also observed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766702">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766730"><div><strong>Autosomal recessive spinocerebellar ataxia 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766730</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553816</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-13 (SCAR13) is an autosomal recessive neurologic disorder characterized by delayed psychomotor development beginning in infancy. Affected individuals show mildly to profoundly impaired intellectual development with poor or absent speech as well as gait and stance ataxia and hyperreflexia. Most individuals also have eye movement abnormalities. Brain MRI shows cerebellar atrophy and ventriculomegaly (Guergueltcheva et al., 2012).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766730">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766773"><div><strong>Epilepsy, idiopathic generalized, susceptibility to, 12</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766773</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553859</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766773">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766801"><div><strong>Osteogenesis imperfecta type 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766801</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553887</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Osteogenesis imperfecta (OI) is a connective tissue disorder characterized by bone fragility and low bone mass. Due to considerable phenotypic variability, Sillence et al. (1979) developed a classification of OI subtypes based on clinical features and disease severity: OI type I, with blue sclerae (166200); perinatal lethal OI type II, also known as congenital OI (166210); OI type III, a progressively deforming form with normal sclerae (259420); and OI type IV, with normal sclerae (166220). Most cases of OI are autosomal dominant with mutations in 1 of the 2 genes that code for type I collagen alpha chains, COL1A1 (120150) and COL1A2 (120160). Martinez-Glez et al. (2012) described osteogenesis imperfecta type XIII, an autosomal recessive form of the disorder characterized by normal teeth, faint blue sclerae, severe growth deficiency, borderline osteoporosis, and an average of 10 to 15 fractures a year affecting both upper and lower limbs and with severe bone deformity.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766801">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766851"><div><strong>Peroxisome biogenesis disorder 4B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766851</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553937</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Peroxisome biogenesis disorder-4B (PBD4B) includes the overlapping phenotypes of neonatal adrenoleukodystrophy (NALD) and infantile Refsum disease (IRD), which represent milder manifestations of the Zellweger syndrome spectrum (ZSS) of peroxisome biogenesis disorders (PBDs). The clinical course of patients with the NALD and IRD presentation is variable and may include developmental delay, hypotonia, liver dysfunction, sensorineural hearing loss, retinal dystrophy, and visual impairment. Children with the NALD presentation may reach their teens, and those with the IRD presentation may reach adulthood (summary by Waterham and Ebberink, 2012).&#13; For a complete phenotypic description and a discussion of genetic heterogeneity of PBD(NALD/IRD), see 601539.&#13; Individuals with mutations in the PEX6 gene have cells of complementation group 4 (CG4, equivalent to CG6 and CGC). For information on the history of PBD complementation groups, see 214100.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766851">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766854"><div><strong>Peroxisome biogenesis disorder 5A (Zellweger)</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766854</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553940</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The peroxisomal biogenesis disorder (PBD) Zellweger syndrome (ZS) is an autosomal recessive multiple congenital anomaly syndrome. Affected children present in the newborn period with profound hypotonia, seizures, and inability to feed. Characteristic craniofacial anomalies, eye abnormalities, neuronal migration defects, hepatomegaly, and chondrodysplasia punctata are present. Children with this condition do not show any significant development and usually die in the first year of life (summary by Steinberg et al., 2006).&#13; For a complete phenotypic description and a discussion of genetic heterogeneity of Zellweger syndrome, see 214100.&#13; Individuals with PBDs of complementation group 5 (CG5, equivalent to CG10 and CGF) have mutations in the PEX2 gene. For information on the history of PBD complementation groups, see 214100.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766854">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766874"><div><strong>Peroxisome biogenesis disorder 8B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766874</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553960</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The overlapping phenotypes of neonatal adrenoleukodystrophy (NALD) and infantile Refsum disease (IRD) represent the milder manifestations of the Zellweger syndrome spectrum (ZSS) of peroxisome biogenesis disorders. The clinical course of patients with the NALD and IRD presentation is variable and may include developmental delay, hypotonia, liver dysfunction, sensorineural hearing loss, retinal dystrophy, and visual impairment. Children with the NALD presentation may reach their teens, and those with the IRD presentation may reach adulthood (summary by Waterham and Ebberink, 2012).&#13; For a complete phenotypic description and a discussion of genetic heterogeneity of PBD(NALD/IRD), see 601539.&#13; Individuals with mutations in the PEX16 gene have cells of complementation group 9 (CG9, equivalent to CGD). For information on the history of PBD complementation groups, see 214100.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766874">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766969"><div><strong>Peroxisome biogenesis disorder 14B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766969</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554055</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PBD14B is an autosomal recessive peroxisome biogenesis disorder characterized clinically by mild intellectual disability, congenital cataracts, progressive hearing loss, and polyneuropathy (Ebberink et al., 2012), all of which had been observed in patients with mild peroxisomal biogenesis disorders (e.g., Kelley et al., 1986; Poll-The et al., 1987). Additionally, recurrent migraine-like episodes following mental stress or physical exertion, not a common feature in peroxisome disorders, was reported.&#13; Thoms and Gartner (2012) classified the disorder described by Ebberink et al. (2012) in their patient as a mild 'Zellweger syndrome (214100) spectrum' (ZSS) disorder. See PBD1B (601539) for a phenotypic description and discussion of genetic heterogeneity of less severe phenotypes on the Zellweger syndrome spectrum. See PBD9B (614879) for another atypical peroxisome biogenesis disorder.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766969">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766992"><div><strong>Branched-chain keto acid dehydrogenase kinase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766992</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554078</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Branched-chain ketoacid dehydrogenase kinase deficiency (BCKDKD) is a neurodevelopmental disorder characterized by autism, impaired intellectual development, and microcephaly (Tangeraas et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766992">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767025"><div><strong>Ectodermal dysplasia 6, hair/nail type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767025</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554111</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Some ectodermal dysplasias are here classified as congenital disorders characterized by abnormal development in 2 or more ectodermal structures (hair, nails, teeth, and sweat glands) without other systemic findings. Ectodermal dysplasia of the hair/nail type is a rare congenital condition characterized by hypotrichosis and nail dystrophy without nonectodermal or other ectodermal manifestations.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767025">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767123"><div><strong>Pontocerebellar hypoplasia type 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767123</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554209</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pontocerebellar hypoplasia type 8 is an autosomal recessive neurodevelopmental disorder characterized by severe psychomotor retardation, abnormal movements, hypotonia, spasticity, and variable visual defects. Brain MRI shows pontocerebellar hypoplasia, decreased cerebral white matter, and a thin corpus callosum (summary by Mochida et al., 2012).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of PCH, see PCH1 (607596).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767123">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767139"><div><strong>Obesity due to leptin receptor gene deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767139</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554225</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Leptin receptor deficiency is characterized by severe early-onset obesity, major hyperphagia, hypogonadotropic hypogonadism, and neuroendocrine/metabolic dysfunction (summary by Dehghani et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767139">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767140"><div><strong>Pontocerebellar hypoplasia type 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767140</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554226</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pontocerebellar hypoplasia type 7 (PCH7) is a severe neurologic condition characterized by delayed psychomotor development, hypotonia, breathing abnormalities, and gonadal abnormalities (summary by Anderson et al., 2011).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of PCH, see PCH1 (607596).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767140">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767220"><div><strong>Autosomal dominant nocturnal frontal lobe epilepsy 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767220</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554306</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant sleep-related hypermotor (hyperkinetic) epilepsy (ADSHE) is a seizure disorder characterized by clusters of nocturnal motor seizures that are often stereotyped and brief (&lt;2 minutes). They vary from simple arousals from sleep to dramatic, often hyperkinetic events with tonic or dystonic features. Affected individuals may experience an aura. Retained awareness during seizures is common. A minority of individuals experience daytime seizures. Age of onset ranges from infancy to adulthood. About 80% of individuals develop ADSHE in the first two decades of life; mean age of onset is ten years. Clinical neurologic examination is normal and intellect is usually preserved, but reduced intellect, psychiatric comorbidities, or cognitive deficits may occur. Within a family, the manifestations of the disorder may vary considerably. ADSHE is lifelong but not progressive. As an individual reaches middle age, seizures may become milder and less frequent.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767220">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767257"><div><strong>Schuurs-Hoeijmakers syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767257</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554343</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PACS1 neurodevelopmental disorder (PACS1-NDD) is characterized by mild-to-severe neurodevelopmental delays. Language skills are more severely affected than motor skills. Hypotonia is reported in about a third of individuals and is noted to improve over time. Approximately 60% of individuals are ambulatory. Feeding difficulty is common, with 25% requiring gastrostomy tube to maintain appropriate caloric intake. Other common features include constipation, seizures, behavioral issues, congenital heart anomalies, short stature, and microcephaly. Common facial features include hypertelorism, downslanting palpebral fissures, bulbous nasal tip, low-set and simple ears, smooth philtrum, wide mouth with downturned corners, thin upper vermilion, and wide-spaced teeth. To date approximately 35 individuals with PACS1-NDD have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767257">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767287"><div><strong>Intellectual developmental disorder with autism and macrocephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767287</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554373</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CHD8-related neurodevelopmental disorder with overgrowth (CHD8-NDD) is characterized by generalized overgrowth, developmental delay / intellectual disability (DD/ID), autism spectrum disorder (ASD), neuropsychiatric issues, neurologic problems, sleep disturbance, and gastrointestinal issues The most common findings are the development of macrocephaly (most often during infancy) and tall stature (most typically during puberty), which is often accompanied by ASD and/or DD/ID. Most, if not all, affected individuals have some degree of DD, most commonly speech and motor delays. When present, ID is most often in the mild-to-moderate range. Sleep disturbance is characterized by difficulty with both initiation (delayed sleep onset) and maintenance (frequent night awakenings) of sleep. The most common gastrointestinal issue is constipation with or without periods of diarrhea. Less common features are hypotonia (about 30% of affected individuals), seizures (10%-15%), dystonia (rare), and Chiari I malformation (rare).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767287">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767363"><div><strong>Severe intellectual disability-progressive spastic diplegia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767363</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554449</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CTNNB1 neurodevelopmental disorder (CTNNB1-NDD) is characterized in all individuals by mild-to-profound cognitive impairment and in up to 39% of reported individuals by exudative vitreoretinopathy, an ophthalmologic finding consistent with familial exudative vitreoretinopathy (FEVR). Other common findings include truncal hypotonia, peripheral spasticity, dystonia, behavior problems, microcephaly, and refractive errors and strabismus. Less common features include intrauterine growth restriction, feeding difficulties, and scoliosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767363">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767376"><div><strong>Mitochondrial DNA depletion syndrome 11</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767376</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554462</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial DNA depletion syndrome-11 is an autosomal recessive mitochondrial disorder characterized by onset in childhood or adulthood of progressive external ophthalmoplegia (PEO), muscle weakness and atrophy, exercise intolerance, and respiratory insufficiency due to muscle weakness. More variable features include spinal deformity, emaciation, and cardiac abnormalities. Skeletal muscle biopsies show deletion and depletion of mitochondrial DNA (mtDNA) with variable defects in respiratory chain enzyme activities (summary by Kornblum et al., 2013).&#13; For a discussion of genetic heterogeneity of autosomal recessive mtDNA depletion syndromes, see MTDPS1 (603041).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767376">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767432"><div><strong>Cowden syndrome 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767432</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554518</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PIK3CA-related overgrowth spectrum (PROS) encompasses a range of clinical findings in which the core features are congenital or early-childhood onset of segmental/focal overgrowth with or without cellular dysplasia. Prior to the identification of PIK3CA as the causative gene, PROS was separated into distinct clinical syndromes based on the tissues and/or organs involved (e.g., MCAP [megalencephaly-capillary malformation] syndrome and CLOVES [congenital lipomatous asymmetric overgrowth of the trunk, lymphatic, capillary, venous, and combined-type vascular malformations, epidermal nevi, skeletal and spinal anomalies] syndrome). The predominant areas of overgrowth include the brain, limbs (including fingers and toes), trunk (including abdomen and chest), and face, all usually in an asymmetric distribution. Generalized brain overgrowth may be accompanied by secondary overgrowth of specific brain structures resulting in ventriculomegaly, a markedly thick corpus callosum, and cerebellar tonsillar ectopia with crowding of the posterior fossa. Vascular malformations may include capillary, venous, and less frequently, arterial or mixed (capillary-lymphatic-venous or arteriovenous) malformations. Lymphatic malformations may be in various locations (internal and/or external) and can cause various clinical issues, including swelling, pain, and occasionally localized bleeding secondary to trauma. Lipomatous overgrowth may occur ipsilateral or contralateral to a vascular malformation, if present. The degree of intellectual disability appears to be mostly related to the presence and severity of seizures, cortical dysplasia (e.g., polymicrogyria), and hydrocephalus. Many children have feeding difficulties that are often multifactorial in nature. Endocrine issues affect a small number of individuals and most commonly include hypoglycemia (largely hypoinsulinemic hypoketotic hypoglycemia), hypothyroidism, and growth hormone deficiency.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767432">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767433"><div><strong>Cowden syndrome 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767433</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554519</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The features of Cowden syndrome overlap with those of another disorder called Bannayan-Riley-Ruvalcaba syndrome. People with Bannayan-Riley-Ruvalcaba syndrome also develop hamartomas and other noncancerous tumors.  Some people with Cowden syndrome have relatives diagnosed with Bannayan-Riley-Ruvalcaba syndrome, and other affected individuals have the characteristic features of both conditions. Based on these similarities, researchers have proposed that Cowden syndrome and Bannayan-Riley-Ruvalcaba syndrome represent a spectrum of overlapping features known as PTEN hamartoma tumor syndrome (named for the genetic cause of the conditions) instead of two distinct conditions.\n\n\n\nSome people do not meet the strict criteria for a clinical diagnosis of Cowden syndrome, but they have some of the characteristic features of the condition, particularly the cancers. These individuals are often described as having Cowden-like syndrome. Both Cowden syndrome and Cowden-like syndrome are caused by mutations in the same genes.\n\nCowden syndrome is associated with an increased risk of developing several types of cancer, particularly cancers of the breast, a gland in the lower neck called the thyroid, and the lining of the uterus (the endometrium). Other cancers that have been identified in people with Cowden syndrome include kidney cancer, colorectal cancer, and an agressive form of skin cancer called melanoma. Compared with the general population, people with Cowden syndrome develop these cancers at younger ages, often beginning in their thirties or forties. People with Cowden syndrome are also more likely to develop more than one cancer during their lifetimes compared to the general population. Other diseases of the breast, thyroid, and endometrium are also common in Cowden syndrome. Additional signs and symptoms can include an enlarged head (macrocephaly) and a rare, noncancerous brain tumor called Lhermitte-Duclos disease. A small percentage of affected individuals have delayed development, intellectual disability, or autism spectrum disorder, which can affect communication and social interaction.\n\nAlmost everyone with Cowden syndrome develops hamartomas. These growths are most commonly found on the skin and mucous membranes (such as the lining of the mouth and nose), but they can also occur in the intestine and other parts of the body. The growth of hamartomas on the skin and mucous membranes typically becomes apparent by a person's late twenties.\n\nCowden syndrome is a genetic disorder characterized by multiple noncancerous, tumor-like growths called hamartomas and an increased risk of developing certain cancers.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767433">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767474"><div><strong>Epilepsy, familial adult myoclonic, 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767474</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554560</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767474">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767506"><div><strong>Microphthalmia, isolated, with coloboma 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767506</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554592</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MCOPCB9 is characterized by microphthalmia and coloboma (Aldahmesh et al., 2012). MCOPS15 is characterized by microphthalmia and/or coloboma, with developmental delay in which speech appears to be more severely affected than motor abilities. Additional ocular anomalies that have been observed include ptosis, keyhole-shaped pupils, microcornea, sclerocornea, and anterior segment dysgenesis (Chassaing et al., 2016; Stephen et al., 2018; Singh et al., 2019).&#13; For a discussion of genetic heterogeneity of colobomatous microphthalmia, see MCOPCB1 (300345). For a discussion of genetic heterogeneity of syndromic microphthalmia, see MCOPS1 (309800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767506">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767523"><div><strong>Short ulna-dysmorphism-hypotonia-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767523</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554609</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Short ulna-dysmorphism-hypotonia-intellectual disability syndrome is a rare, genetic, multiple congenital anomalies/dysmorphic syndrome characterized by mild to severe global development delay, severe intellectual disability, mild hypotonia, a short ulna, hirsutism of the face and extremities, minimal scoliosis, and facial dysmorphism, notably a tall broad forehead, synophrys, hypertelorism, malar hypoplasia, broad nose with thick alae nasi, low-set, small ears, long philtrum, thin upper lip and everted lower lip vermilion.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767523">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767552"><div><strong>Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type a, 11</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767552</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554638</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital muscular dystrophy-dystroglycanopathy with brain and eye anomalies (type A) is an autosomal recessive disorder with congenital muscular dystrophy resulting in muscle weakness early in life and brain and eye anomalies. It is usually associated with delayed psychomotor development and shortened life expectancy. The phenotype includes the alternative clinical designations Walker-Warburg syndrome (WWS) and muscle-eye-brain disease (MEB). The disorder represents the most severe end of a phenotypic spectrum of similar disorders resulting from defective glycosylation of alpha-dystroglycan (DAG1; 128239), collectively known as 'dystroglycanopathies' (summary by Stevens et al., 2013).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of muscular dystrophy-dystroglycanopathy type A, see MDDGA1 (236670).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767552">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767571"><div><strong>Cobblestone lissencephaly without muscular or ocular involvement</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767571</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554657</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Lissencephaly-5 (LIS5) is an autosomal recessive brain malformation characterized by cobblestone changes in the cortex, more severe in the posterior region, and subcortical band heterotopia. Affected individuals have hydrocephalus, seizures, and severely delayed psychomotor development (Radmanesh et al., 2013).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of lissencephaly, see LIS1 (607432).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767571">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767579"><div><strong>Osteosclerotic metaphyseal dysplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767579</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554665</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Osteosclerotic metaphyseal dysplasia (OSMD) is a rare condition characterized by distinctive radiographic changes, including osteosclerosis localized predominantly to the metaphyses of the long bones. The shafts of the long bones are osteopenic. Laboratory abnormalities include elevated alkaline phosphatase levels in some, but not all, patients. Elevated urinary pyridinoline and deoxypyridinoline levels, markers of osteoclastic activity, have also been reported (Nishimura and Kozlowski, 1993; Kasapkara et al., 2013; Guo et al., 2017).&#13; Patients with OSMD have been described who also show hypotonia, developmental delay, seizures, and later-onset spastic paraplegia; however, OSMD resulting from mutation in the LRRK1 gene does not appear to include these neurologic features (Nishimura and Kozlowski, 1993; Kasapkara et al., 2013; Guo et al., 2017).&#13; Reviews&#13; Howaldt et al. (2020) reviewed published reports of LRRK1-associated OSMD, and noted that patients typically present with recurrent pathologic fractures and osteosclerosis at multiple skeletal sites, predominantly at the metaphyses and vertebral bodies. Variable degrees of osteosclerosis of ribs and skull and of Erlenmeyer flask deformity of the femurs have been observed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767579">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767605"><div><strong>Hydrocephalus, nonsyndromic, autosomal recessive 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767605</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3554691</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital hydrocephalus-2 (HYC2) is a congenital disorder with onset in utero. Affected individuals have hydrocephalus with variably dilated ventricles and variable neurologic sequelae. Some individuals have other brain abnormalities, including lissencephaly, thinning of the corpus callosum, and neuronal heterotopia. Most patients have delayed motor development and some have delayed intellectual development and/or seizures. Additional congenital features, including cardiac septal defects, iris coloboma, and nonspecific dysmorphic features, may be observed. Some patients die in utero, in infancy, or in early childhood, whereas others have long-term survival (summary by Shaheen et al., 2017).&#13; For a discussion of genetic heterogeneity of congenital hydrocephalus, see 233600.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767605">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_811329"><div><strong>Charcot-Marie-Tooth disease type 4B3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>811329</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3695063</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A subtype of Charcot-Marie-Tooth type 4 with characteristics of childhood onset of slowly progressing, demyelinating sensorimotor neuropathy, focally folded myelin sheaths in nerve biopsy, reduced nerve conduction velocities and the typical Charcot-Marie-Tooth phenotype (i.e. distal muscle weakness and atrophy, and sensory loss). There is evidence this disease is caused by homozygous or compound heterozygous mutation in the SBF1 gene on chromosome 22q.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/811329">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_785805"><div><strong>Blepharophimosis - intellectual disability syndrome, MKB type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>785805</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3698541</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MED12-related disorders include the phenotypes of FG syndrome type 1 (FGS1), Lujan syndrome (LS), X-linked Ohdo syndrome (XLOS), Hardikar syndrome (HS), and nonspecific intellectual disability (NSID). FGS1 and LS share the clinical findings of cognitive impairment, hypotonia, and abnormalities of the corpus callosum. FGS1 is further characterized by absolute or relative macrocephaly, tall forehead, downslanted palpebral fissures, small and simple ears, constipation and/or anal anomalies, broad thumbs and halluces, and characteristic behavior. LS is further characterized by large head, tall thin body habitus, long thin face, prominent nasal bridge, high narrow palate, and short philtrum. Carrier females in families with FGS1 and LS are typically unaffected. XLOS is characterized by intellectual disability, blepharophimosis, and facial coarsening. HS has been described in females with cleft lip and/or cleft palate, biliary and liver anomalies, intestinal malrotation, pigmentary retinopathy, and coarctation of the aorta. Developmental and cognitive concerns have not been reported in females with HS. Pathogenic variants in MED12 have been reported in an increasing number of males and females with NSID, with affected individuals often having clinical features identified in other MED12-related disorders.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/785805">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_811489"><div><strong>Smith-McCort dysplasia 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>811489</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3714896</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Smith-McCort dysplasia (SMC) is a rare autosomal recessive osteochondrodysplasia characterized by short trunk dwarfism with a barrel-shaped chest, rhizomelic limb shortening, and specific radiologic features including marked platyspondyly with double-humped end-plates, kyphoscoliosis, metaphyseal irregularities, laterally displaced capital femoral epiphyses, and small pelvis with a lace-like appearance of iliac crests. These clinical and radiologic features are also common to Dyggve-Melchior-Clausen syndrome (DMC; 223800), which is distinguished from SMC by the additional feature of mental retardation (summary by Dupuis et al., 2013).&#13; For a discussion of genetic heterogeneity of Smith-McCort dysplasia, see SMC1 (607326).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/811489">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_811538"><div><strong>Bardet-Biedl syndrome 17</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>811538</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3714980</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bardet-Biedl syndrome-17 (BBS17) is an autosomal recessive ciliopathy characterized by retinitis pigmentosa, cognitive impairment, obesity, renal dysfunction, and hypogenitalism. Polydactyly, most often postaxial, is also a primary feature of BBS; in BBS17, mesoaxial polydactyly, with fused or Y-shaped metacarpals, is a distinct manifestation (Deffert et al., 2007; Schaefer et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/811538">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_811762"><div><strong>Uveal coloboma-cleft lip and palate-intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>811762</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3805432</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare, genetic, multiple congenital anomalies/dysmorphic syndrome characterized by uveal coloboma (typically bilateral) variably associated with cleft lip, palate and/or uvula, hearing impairment, and intellectual disability. The spectrum of eye involvement is also variable and includes iris coloboma extending to the choroid, disc, and/or macula, microphthalmia, cataract, and extraocular movement impairment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/811762">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_812057"><div><strong>Megalencephaly, autosomal dominant</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>812057</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3805727</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Primary megalencephaly is defined as a head circumference about the 98th percentile that most likely is due to brain enlargement and is not secondary to disease (review by Petersson et al., 1999).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/812057">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_812504"><div><strong>Bardet-Biedl syndrome 18</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>812504</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3806174</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">BBS18 is an autosomal recessive ciliopathy characterized by retinitis pigmentosa, obesity, kidney failure, and cognitive disability (Scheidecker et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/812504">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_812742"><div><strong>Macrocephaly/megalencephaly syndrome, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>812742</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3806412</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Macrocephaly refers to an abnormally enlarged head inclusive of the scalp, cranial bones, and intracranial contents. Macrocephaly may be due to megalencephaly (true enlargement of the brain parenchyma), and the 2 terms are often used interchangeably in the genetic literature (reviews by Olney, 2007 and Williams et al., 2008). Autosomal recessive macrocephaly/megalencephaly syndrome is characterized by an enlarged cranium apparent at birth or in early childhood. Affected individuals have intellectual disability and may have dysmorphic facial features resulting from the macrocephaly (summary by Alfaiz et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/812742">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_813018"><div><strong>SLC35A2-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>813018</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3806688</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital disorder of glycosylation type IIm, or developmental and epileptic encephalopathy-22 (DEE22), is an X-linked dominant severe neurologic disorder characterized by infantile-onset seizures, hypsarrhythmia on EEG, hypotonia, and developmental delay associated with severe intellectual disability and lack of speech. These features are consistent with developmental and epileptic encephalopathy (DEE). Brain malformations usually include cerebral and cerebellar atrophy. Additionally, some patients may have dysmorphic features or coarse facies (Ng et al., 2013; Kodera et al., 2013).&#13; For a general discussion of CDGs, see CDG1A (212065) and CDG2A (212066). For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/813018">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_813060"><div><strong>X-linked intellectual disability, Cantagrel type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>813060</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3806730</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked intellectual developmental disorder-98 (XLID98) is a neurodevelopmental disorder characterized by delayed psychomotor development, poor speech, behavioral abnormalities, poor overall growth, dysmorphic facial features, and often early-onset seizures. Some carrier females are unaffected, whereas other females with mutations are affected; males tend to be more severely affected than females. It is believed that the phenotypic variability and disease manifestations in female carriers results from skewed X-inactivation or cellular mosaicism (summary by de Lange et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/813060">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_813072"><div><strong>X-linked colobomatous microphthalmia-microcephaly-intellectual disability-short stature syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>813072</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3806742</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked colobomatous microphthalmia-microcephaly-intellectual disability-short stature syndrome is a rare syndromic microphthalmia disorder characterized by microphthalmia with coloboma (which may involve the iris, cilary body, choroid, retina and/or optic nerve), microcephaly, short stature and intellectual disability. Other eye abnormalities such as pendular nystagmus, esotropia and ptosis may also be present. Additional associated abnormalities include kyphoscoliosis, anteverted pinnae with minimal convolutions, diastema of the incisors and congenital pes varus.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/813072">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_813076"><div><strong>Intellectual disability, X-linked 99</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>813076</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3806746</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the USP9X gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/813076">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_814727"><div><strong>Complex cortical dysplasia with other brain malformations 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>814727</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3808397</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Complex cortical dysplasia with other brain malformations (CDCBM) is a disorder of aberrant neuronal migration and disturbed axonal guidance. Affected individuals have mild to severe mental retardation, strabismus, axial hypotonia, and spasticity. Brain imaging shows variable malformations of cortical development, including polymicrogyria, gyral disorganization, and fusion of the basal ganglia, as well as thin corpus callosum, hypoplastic brainstem, and dysplastic cerebellar vermis. Extraocular muscles are not involved (summary by Poirier et al., 2010).&#13; Genetic Heterogeneity of Complex Cortical Dysplasia with Other Brain Malformations&#13; See also CDCBM2 (615282), caused by mutation in the KIF5C gene (604593) on chromosome 2q23; CDCBM3 (615411), caused by mutation in the KIF2A gene (602591) on chromosome 5q12; CDCBM4 (615412), caused by mutation in the TUBG1 gene (191135) on chromosome 17q21; CDCBM5 (615763), caused by mutation in the TUBB2A gene (615101) on chromosome 6p25; CDCBM6 (615771), caused by mutation in the TUBB gene (191130) on chromosome 6p21; CDCBM7 (610031), caused by mutation in the TUBB2B gene (612850) on chromosome 6p25; CDCBM9 (618174), caused by mutation in the CTNNA2 gene (114025) on chromosome 2p12; CDCBM10 (618677), caused by mutation in the APC2 gene (612034) on chromosome 19p13; CDCBM11 (620156), caused by mutation in the KIF26A gene (613231) on chromosome 14q32; CDCBM12 (620316), caused by mutation in the CAMSAP1 gene (613774) on chromosome 9q34; CDCBM13 (614563), caused by mutation in the DYNC1H1 gene (600112) on chromosome 14q32; CDCBM14A (606854) and CDCBM14B (615752), caused by mutation in the ADGRG1 gene (604110) on chromosome 16q21; and CDCBM15 (618737), caused by mutation in the TUBGCP2 gene (617817) on chromosome 10q26.&#13; The designation CDCBM8 was previously used to represent a phenotype caused by mutation in the TUBA8 gene (see 605742.0001) on chromosome 22q11; the patients with this phenotype were subsequently found to have a homozygous mutation in the SNAP29 gene (604202.0002), also on chromosome 22q11, that may have been responsible for the disorder. The same mutation in SNAP29 causes a similar disorder, CEDNIK syndrome (609528).&#13; See also lissencephaly (e.g., LIS1, 607432), which shows overlapping features and may result from mutation in tubulin genes.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/814727">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815283"><div><strong>Nephrotic syndrome, type 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815283</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3808953</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any nephrotic syndrome in which the cause of the disease is a mutation in the ARHGDIA gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815283">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815307"><div><strong>Cerebellar ataxia, intellectual disability, and dysequilibrium syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815307</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3808977</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebellar ataxia, impaired intellectual development, and dysequilibrium syndrome (CAMRQ) is a genetically heterogeneous disorder characterized by congenital cerebellar ataxia and impaired intellectual development (summary by Gulsuner et al., 2011).&#13; For a discussion of genetic heterogeneity of CAMRQ, see CAMRQ1 (224050).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815307">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815336"><div><strong>Cardiofaciocutaneous syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815336</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809006</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cardiofaciocutaneous (CFC) syndrome is characterized by cardiac abnormalities (pulmonic stenosis and other valve dysplasias, septal defects, hypertrophic cardiomyopathy, rhythm disturbances), distinctive craniofacial appearance, and cutaneous abnormalities (including xerosis, hyperkeratosis, ichthyosis, keratosis pilaris, ulerythema ophryogenes, eczema, pigmented moles, hemangiomas, and palmoplantar hyperkeratosis). The hair is typically sparse, curly, fine or thick, and woolly or brittle; eyelashes and eyebrows may be absent or sparse. Nails may be dystrophic or fast growing. Affected individuals typically have some form of neurologic and/or cognitive delay (ranging from mild to severe). Most individuals have severe feeding issues, which can contribute to poor growth, and many require nasogastric or gastrostomy tube feeding. Many affected individuals have eye findings, including strabismus, nystagmus, refractive errors, and optic nerve hypoplasia. Seizures may be present and can be refractory to therapy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815336">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815490"><div><strong>Hypohidrosis-enamel hypoplasia-palmoplantar keratoderma-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815490</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809160</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Shaheen syndrome (SHNS) is an autosomal recessive disorder characterized by severely impaired intellectual development, hypohidrosis, dental enamel hypoplasia, and hyperkeratosis of the palms and soles. Some patients may develop mild microcephaly (summary by Shaheen et al., 2013).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815490">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815546"><div><strong>Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815546</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809216</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815546">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815551"><div><strong>Muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815551</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809221</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MDDGB14 is an autosomal recessive congenital muscular dystrophy characterized by severe muscle weakness apparent in infancy and impaired intellectual development. Some patients may have additional features, such as microcephaly, cardiac dysfunction, seizures, or cerebellar hypoplasia. It is part of a group of similar disorders resulting from defective glycosylation of alpha-dystroglycan (DAG1; 128239), collectively known as 'dystroglycanopathies' (summary by Carss et al., 2013).&#13; For a discussion of genetic heterogeneity of congenital muscular dystrophy-dystroglycanopathy type B, see MDDGB1 (613155).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815551">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815563"><div><strong>Noonan syndrome 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815563</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809233</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Noonan syndrome (NS) is characterized by characteristic facies, short stature, congenital heart defect, and developmental delay of variable degree. Other findings can include broad or webbed neck, unusual chest shape with superior pectus carinatum and inferior pectus excavatum, cryptorchidism, varied coagulation defects, lymphatic dysplasias, and ocular abnormalities. Although birth length is usually normal, final adult height approaches the lower limit of normal. Congenital heart disease occurs in 50%-80% of individuals. Pulmonary valve stenosis, often with dysplasia, is the most common heart defect and is found in 20%-50% of individuals. Hypertrophic cardiomyopathy, found in 20%-30% of individuals, may be present at birth or develop in infancy or childhood. Other structural defects include atrial and ventricular septal defects, branch pulmonary artery stenosis, and tetralogy of Fallot. Up to one fourth of affected individuals have mild intellectual disability, and language impairments in general are more common in NS than in the general population.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815563">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815608"><div><strong>Developmental and epileptic encephalopathy 94</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815608</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809278</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CHD2-related neurodevelopmental disorders are characterized by early-onset epileptic encephalopathy (i.e., refractory seizures and cognitive slowing or regression associated with frequent ongoing epileptiform activity). Seizure onset is typically between ages six months and four years. Seizure types typically include drop attacks, myoclonus, and rapid onset of multiple seizure types associated with generalized spike-wave on EEG, atonic-myoclonic-absence seizures, and clinical photosensitivity. Intellectual disability and/or autism spectrum disorders are common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815608">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815686"><div><strong>Multiple congenital anomalies-hypotonia-seizures syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815686</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809356</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Multiple congenital anomalies-hypotonia-seizures syndrome is an autosomal recessive disorder characterized by neonatal hypotonia, lack of psychomotor development, seizures, dysmorphic features, and variable congenital anomalies involving the cardiac, urinary, and gastrointestinal systems. Most affected individuals die before 3 years of age (summary by Maydan et al., 2011). The disorder is caused by a defect in glycosylphosphatidylinositol (GPI) biosynthesis.&#13; For a discussion of genetic heterogeneity of MCAHS, see MCAHS1 (614080).&#13; For a discussion of genetic heterogeneity of GPI biosynthesis defects, see GPIBD1 (610293).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815686">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815939"><div><strong>Aldosterone-producing adenoma with seizures and neurological abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815939</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809609</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare, genetic, neurologic disease characterized by primary hyperaldosteronism presenting with early-onset, severe hypertension, hypokalemia and neurological manifestations (including seizures, severe hypotonia, spasticity, cerebral palsy and profound developmental delay/intellectual disability).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815939">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815995"><div><strong>Early-onset progressive neurodegeneration-blindness-ataxia-spasticity syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815995</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809665</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia-79B (SPG79B) is an autosomal recessive progressive neurologic disorder characterized by onset of spastic paraplegia and optic atrophy in the first decade of life. Additional features are variable, but may include peripheral neuropathy, cerebellar ataxia, and cognitive impairment (summary by Rydning et al., 2017).&#13; For a discussion of genetic heterogeneity of autosomal recessive spastic paraplegia, see SPG5A (270800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815995">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816002"><div><strong>Intellectual disability-hypotonia-spasticity-sleep disorder syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816002</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809672</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">A rare, genetic, syndromic intellectual disability disorder characterized by variable degrees of intellectual disability, behavioral problems (including attention deficit and hyperactivity disorder, autism spectrum disorder, and aggressiveness), an altered sleeping pattern, and delayed speech and language development associated with disruption of ankyrin-3 (&lt;i&gt;ANK3&lt;/i&gt; gene). Additional features observed may include muscular hypotonia and spasticity. Epilepsy, chronic hunger, and dysmorphic facial features have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816002">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816016"><div><strong>Intellectual disability-feeding difficulties-developmental delay-microcephaly syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816016</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809686</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">CTCF-related disorder is characterized by developmental delay / intellectual disability (ranging from mild to severe), with both speech and motor delays being common; feeding difficulties, including dysphagia, and other gastrointestinal issues (gastroesophageal reflux disease and/or irritable bowel syndrome) that can lead to growth deficiency; hypotonia; eye anomalies (strabismus and/or refractive errors); scoliosis; nonspecific dysmorphic features; sleep disturbance; tooth anomalies (crowded teeth and/or abnormal decay); and, less commonly, other congenital anomalies (cleft palate, gastrointestinal malrotation, genitourinary anomalies, and congenital heart defects, including aortic ectasia). Short stature, seizures, hearing loss, recurrent infections, microcephaly, and autistic features have also been described in a minority of affected individuals. At least four reported individuals with CTCF-related disorder developed Wilms tumor, one of whom had bilateral Wilms tumor. However, there is no clear evidence of a significant predisposition for the development of cancer in individuals with CTCF-related disorder at this time.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816016">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816083"><div><strong>Developmental delay with autism spectrum disorder and gait instability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816083</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809753</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental delay with autism spectrum disorder and gait instability is a rare, genetic, neurological disorder characterized by infant hypotonia and feeding difficulties, global development delay, mild to moderated intellectual disability, delayed independent ambulation, broad-based gait with arms upheld and flexed at the elbow with brisk walking or running, and limited language skills. Behavior patterns are highly variable and range from sociable and affectionate to autistic behavior.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816083">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816133"><div><strong>Microphthalmia, syndromic 12</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816133</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809803</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndromic microphthalmia-12 is a rare disease characterized by bilateral small eyeballs (microphthalmia), lungs that are too small (pulmonary hypoplasia), and a defect or hole in the diaphragm that allows the abdominal contents to move into the chest cavity (diaphragmatic hernia). Other symptoms may include: Severe global developmental delay with progressive motor impairment due to spasticity and/or uncontrolled repetitive muscular contractions (dystonia), with or without abnormal quick movements that resemble dancing (chorea), Defects of the cerebellum (Chiari type I malformation) Accumulation of cerebrospinal fluid inside the brain (hydrocephaly), Severe feeding difficulties, Mild facial dysmorphism with broad nasal root and tip, and a very small chin (micrognathia), Severe language delay, Wheelchair-bound. Syndromic microphthalmia-12 is caused by mutations in the RARB gene. There is no specific treatment for this syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816133">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816141"><div><strong>Juvenile onset Parkinson disease 19A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816141</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809811</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">DNAJC6 Parkinson disease is a complex early-onset neurologic disorder whose core features are typical parkinsonian symptoms including bradykinesia, resting tremor, rigidity, and postural instability. The majority of individuals have juvenile onset and develop symptoms before age 21 years. Developmental delay, intellectual disability, seizures, other movement disorders (e.g., dystonia, spasticity, myoclonus), and neuropsychiatric features occur in the majority of individuals with juvenile onset and often precede parkinsonism. The onset of parkinsonian features usually occurs toward the end of the first or beginning of the second decade and the disease course is rapidly progressive with loss of ambulation in mid-adolescence in the majority of individuals. Additional features include gastrointestinal manifestations and bulbar dysfunction. A minority of individuals with DNAJC6 Parkinson disease develop early-onset parkinsonism with symptom onset in the third to fourth decade and absence of additional neurologic features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816141">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816175"><div><strong>Ehlers-Danlos syndrome, musculocontractural type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816175</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809845</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The musculocontractural type of Ehlers-Danlos syndrome (EDSMC2) is characterized by progressive multisystem fragility-related manifestations, including joint dislocations and deformities; skin hyperextensibility, bruisability, and fragility, with recurrent large subcutaneous hematomas; cardiac valvular, respiratory, gastrointestinal, and ophthalmologic complications; and myopathy, featuring muscle hypoplasia, muscle weakness, and an abnormal muscle fiber pattern in histology in adulthood, resulting in gross motor developmental delay (summary by Muller et al., 2013).&#13; For a discussion of genetic heterogeneity of the musculocontractural type of Ehlers-Danlos syndrome, see EDSMC1 (601776).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816175">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816205"><div><strong>Van Maldergem syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816205</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809875</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Van Maldergem syndrome is an autosomal recessive disorder characterized by intellectual disability, typical craniofacial features, auditory malformations resulting in hearing loss, and skeletal and limb malformations. Some patients have renal hypoplasia. Brain MRI typically shows periventricular nodular heterotopia (summary by Cappello et al., 2013).&#13; For a discussion of genetic heterogeneity of Van Maldergem syndrome, see 601390.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816205">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816240"><div><strong>Autism spectrum disorder - epilepsy - arthrogryposis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816240</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809910</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Arthrogryposis, impaired intellectual development, and seizures (AMRS) is an autosomal recessive disorder characterized by skeletal abnormalities, including arthrogryposis, short limbs, and vertebral malformations, impaired intellectual development, and seizures consistent with early-onset epileptic encephalopathy in some patients. Other features may include cleft palate, micrognathia, posterior embryotoxon, talipes valgus, rocker-bottom feet, and dysmorphic facies (Edmondson et al., 2017; Marini et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816240">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816410"><div><strong>Microcephaly-thin corpus callosum-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816410</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810080</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare, genetic, syndromic intellectual disability disease characterized by progressive postnatal microcephaly and global developmental delay, as well as moderate to profound intellectual disability, difficulty or inability to walk, pyramidal signs (including spasticity, hyperreflexia and extensor plantar response) and thin corpus callosum revealed by brain imaging. Ophthalmologic signs (including nystagmus, strabismus and abnormal retinal pigmentation), foot deformity and genital anomalies may also be associated.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816410">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816505"><div><strong>Short-rib thoracic dysplasia 10 with or without polydactyly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816505</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810175</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Short-rib thoracic dysplasia (SRTD) with or without polydactyly refers to a group of autosomal recessive skeletal ciliopathies that are characterized by a constricted thoracic cage, short ribs, shortened tubular bones, and a 'trident' appearance of the acetabular roof. SRTD encompasses Ellis-van Creveld syndrome (EVC) and the disorders previously designated as Jeune syndrome or asphyxiating thoracic dystrophy (ATD), short rib-polydactyly syndrome (SRPS), and Mainzer-Saldino syndrome (MZSDS). Polydactyly is variably present, and there is phenotypic overlap in the various forms of SRTDs, which differ by visceral malformation and metaphyseal appearance. Nonskeletal involvement can include cleft lip/palate as well as anomalies of major organs such as the brain, eye, heart, kidneys, liver, pancreas, intestines, and genitalia. Some forms of SRTD are lethal in the neonatal period due to respiratory insufficiency secondary to a severely restricted thoracic cage, whereas others are compatible with life (summary by Huber and Cormier-Daire, 2012 and Schmidts et al., 2013).&#13; There is phenotypic overlap with the cranioectodermal dysplasias (Sensenbrenner syndrome; see CED1, 218330).&#13; For a discussion of genetic heterogeneity of short-rib thoracic dysplasia, see SRTD1 (208500).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816505">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816542"><div><strong>Joubert syndrome 21</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816542</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810212</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816542">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816555"><div><strong>Macrocephaly-developmental delay syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816555</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810225</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">KPTN-related disorder is characterized by mild-to-profound intellectual disability, global developmental delay, neurobehavioral/psychiatric manifestations (anxiety, stereotypies, hyperactivity, repetitive speech, and impaired social communication), hypotonia, postnatal and progressive macrocephaly, and seizures. Generalized megalencephaly is often present on brain imaging. Some individuals have recurrent infections, conductive hearing impairment, strabismus, nystagmus, ketotic hypoglycemia, thyroid dysfunction, and/or mild skeletal manifestations.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816555">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816612"><div><strong>Chromosome 5q12 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816612</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810282</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PDE4D haploinsufficiency syndrome is a rare syndromic intellectual disability characterized by developmental delay, intellectual disability, low body mass index, long arms, fingers and toes, prominent nose and small chin.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816612">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816619"><div><strong>Hereditary spastic paraplegia 64</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816619</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810289</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ENTPD1-related neurodevelopmental disorder (ENTPD1-NDD) is characterized by developmental delay / intellectual disability (ranging from borderline/mild to moderate/severe) and onset of progressive spastic paraplegia with progressive gait impairment beginning before age five years. Difficulty with balance and frequent falling are common and can result in loss of independent ambulation and wheelchair dependence in the teenage to young adult years. Other neuromuscular findings can include abnormal deep tendon reflexes, weakness, neuropathy, epilepsy, dysarthria, and dysphagia. Behavior abnormalities and neurocognitive regression are common. Life span does not appear to be shortened.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816619">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816624"><div><strong>Hereditary spastic paraplegia 61</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816624</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810294</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spastic paraplegia-61 (SPG61) is a complicated, early-onset spastic paraplegia (summary by Chukhrova et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816624">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816625"><div><strong>Hereditary spastic paraplegia 63</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816625</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810295</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An extremely rare and complex form of hereditary spastic paraplegia with characteristics of onset in infancy of spastic paraplegia (presenting with delayed walking and a scissors gait) associated with short stature and normal cognition. Periventricular deep white matter changes in the corpus callosum are noted on brain imaging. SPG63 is caused by a homozygous mutation in the AMPD2 gene (1p13.3) encoding AMP deaminase 2.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816625">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816654"><div><strong>Obesity due to CEP19 deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816654</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810324</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare, genetic form of obesity characterized by morbid obesity, hypertension, type 2 diabetes mellitus and dyslipidemia leading to early coronary disease, myocardial infarction and congestive heart failure. Intellectual disability and decreased sperm counts or azoospermia have also been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816654">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816656"><div><strong>Autosomal recessive spinocerebellar ataxia 15</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816656</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810326</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-15 (SCAR15) is characterized by early-onset ataxia, cognitive impairment, dysarthria, and developmental delay. Variable features include seizures, nystagmus, and abnormal reflexes (Seidahmed et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816656">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816684"><div><strong>Hyperphosphatasia with intellectual disability syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816684</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810354</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hyperphosphatasia with impaired intellectual development syndrome-4 (HPMRS4) is an autosomal recessive neurologic disorder characterized by severely delayed psychomotor development, impaired intellectual development, lack of speech acquisition, seizures, and dysmorphic facial features. Laboratory studies show increased serum alkaline phosphatase (summary by Howard et al., 2014). The disorder is caused by a defect in glycosylphosphatidylinositol (GPI) biosynthesis.&#13; For a discussion of genetic heterogeneity of HPMRS, see HPMRS1 (239300).&#13; For a discussion of genetic heterogeneity of GPI biosynthesis defects, see GPIBD1 (610293).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816684">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816693"><div><strong>Bosch-Boonstra-Schaaf optic atrophy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816693</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810363</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NR2F1-related neurodevelopmental disorder (NR2F1-NDD) is characterized by developmental delay / intellectual disability (ranging from profound to mild) and is commonly associated with hypotonia, visual impairment (due to optic nerve abnormalities and/or cerebral visual impairment), epilepsy, and behavioral manifestations (e.g., autism spectrum disorder, attention-deficit/hyperactivity disorder).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816693">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816730"><div><strong>Developmental and epileptic encephalopathy, 19</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816730</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810400</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-19 (DEE19) is a neurologic disorder characterized by the onset of various types of seizures in the first year of life, usually between 8 and 12 months of age. Seizures are often triggered by fever, and status epilepticus may occur. Affected individuals subsequently show mildly to moderately impaired intellectual development. Brain imaging is typically normal. The clinical phenotype is similar to that of Dravet syndrome (DRVT; 607208) (summary by Carvill et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816730">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816735"><div><strong>Polymicrogyria, bilateral perisylvian, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816735</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810405</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Complex cortical dysplasia with other brain malformations-14B (CDCBM14B) is an autosomal recessive disorder characterized by strikingly restricted polymicrogyria limited to the cortex surrounding the Sylvian fissure. Affected individuals have variable intellectual and language difficulty and seizures, but no motor disability (Bae et al., 2014).&#13; For a discussion of genetic heterogeneity of CDCBM, see CDCBM1 (614039).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816735">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816736"><div><strong>Intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816736</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3810406</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency is a rare, syndromic intellectual disability characterized by intellectual disability of various severity, hypotonia, feeding difficulties, dysmorphic features, autism and behavioral issues. Growth retardation, congenital heart anomalies, gastrointestinal and genitourinary defects have been rarely associated.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816736">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_854455"><div><strong>Hydrocephalus, nonsyndromic, autosomal recessive 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>854455</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3887608</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital hydrocephalus-1 (HYC1) is characterized by onset in utero of enlarged ventricles due to a disturbance of cerebrospinal fluid accumulation. Affected individuals may have neurologic impairment (summary by Drielsma et al., 2012).&#13; Hydrocephalus can also be caused by Arnold-Chiari malformation, atresia of foramen of Magendie, stenosis of aqueduct of Sylvius (307000), toxoplasmosis, hydranencephaly, etc. Furthermore, it develops in infancy or childhood in achondroplasia (100800) and in Hurler disease (607014).&#13; Genetic Heterogeneity of Congenital Hydrocephalus&#13; See also HYC2 (615219), caused by mutation in the MPDZ gene (603785) on chromosome 9p23; HYC3 (617967), caused by mutation in the WDR81 gene (614218) on chromosome 17p13; HYC4 (618667), caused by mutation in the TRIM71 gene (618570) on chromosome 3p22; and HYC5 (620241), caused by mutation in the SMARCC1 gene (601732) on chromosome 3p23.&#13; An X-linked form of congenital hydrocephalus (HSAS, HYCX; 307000) is caused by mutation in the L1CAM gene on (308840) on chromosome Xq28.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/854455">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_854647"><div><strong>Intellectual disability, X-linked 41</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>854647</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3887939</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the GDI1 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/854647">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_854757"><div><strong>Smith-McCort dysplasia 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>854757</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3888088</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any Smith-McCort dysplasia in which the cause of the disease is a mutation in the DYM gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/854757">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_854816"><div><strong>Hereditary spastic paraplegia 45</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>854816</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3888209</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare pure or complex form of hereditary spastic paraplegia with characteristics of onset in infancy of progressive lower limb spasticity, abnormal gait, increased deep tendon reflexes and extensor plantar responses that may be associated with intellectual disability. Additional signs such as contractures in the lower limbs, amyotrophy, clubfoot and optic atrophy, have also been reported. Caused by homozygous mutation in the NT5C2 gene on chromosome 10q24.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/854816">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_854829"><div><strong>Aicardi-Goutieres syndrome 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>854829</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3888244</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Most characteristically, Aicardi-Goutières syndrome (AGS) manifests as an early-onset encephalopathy that usually, but not always, results in severe intellectual and physical disability. A subgroup of infants with AGS present at birth with abnormal neurologic findings, hepatosplenomegaly, elevated liver enzymes, and thrombocytopenia, a picture highly suggestive of congenital infection. Otherwise, most affected infants present at variable times after the first few weeks of life, frequently after a period of apparently normal development. Typically, they demonstrate the subacute onset of a severe encephalopathy characterized by extreme irritability, intermittent sterile pyrexias, loss of skills, and slowing of head growth. Over time, as many as 40% develop chilblain skin lesions on the fingers, toes, and ears. It is becoming apparent that atypical, sometimes milder, cases of AGS exist, and thus the true extent of the phenotype associated with pathogenic variants in the AGS-related genes is not yet known.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/854829">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_855172"><div><strong>Bardet-Biedl syndrome 16</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>855172</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3889474</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bardet-Biedl syndrome-16 (BBS16) is an autosomal recessive ciliopathy characterized by retinal degeneration, obesity, renal disease, and cognitive impairment. Although polydactyly is considered a primary feature of BBS overall, it has not been reported in any BBS16 patient (Billingsley et al., 2012).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/855172">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_855173"><div><strong>Bardet-Biedl syndrome 19</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>855173</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3889475</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bardet-Biedl syndrome-19 (BBS19) is an autosomal recessive ciliopathy characterized by obesity, impaired intellectual development, polydactyly, renal failure, retinitis pigmentosa, and hypogonadism (Aldahmesh et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/855173">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_855516"><div><strong>Intellectual disability, X-linked 100</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>855516</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3890167</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked intellectual developmental disorder-100 (XLID100) is an X-linked recessive disorder characterized by a neurodevelopmental phenotype with impaired intellectual development with or without epilepsy. The phenotypic spectrum also includes hydrocephalus, either isolated or associated with other congenital anomalies, predominantly of the brain, kidneys, and urinary tract (summary by Kalantari et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/855516">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_855517"><div><strong>Intellectual disability, X-linked 101</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>855517</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3890168</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the MID2 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/855517">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_855697"><div><strong>Nephronophthisis 18</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>855697</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3890591</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nephronophthisis-18 is an autosomal recessive disorder characterized by chronic tubulointerstitial nephritis resulting in end-stage renal disease in early childhood. Extrarenal manifestations, including intellectual disability or liver changes, may occur in some patients (summary by Failler et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of nephronophthisis, see NPHP1 (256100).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/855697">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_856014"><div><strong>Seckel syndrome 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>856014</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3891452</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Seckel syndrome-8 (SCKL8) is characterized by severe microcephaly and markedly reduced height. Some patients have bird-like facies and exhibit developmental delays (Shaheen et al., 2014; Tarnauskaite et al., 2019).&#13; For a discussion of genetic heterogeneity of Seckel syndrome, see SCKL1 (210600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/856014">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_860487"><div><strong>Hennekam lymphangiectasia-lymphedema syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>860487</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4012050</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hennekam lymphangiectasia-lymphedema syndrome (HKLLS1) is an autosomal recessive disorder characterized by generalized lymphatic dysplasia affecting various organs, including the intestinal tract, pericardium, and limbs. Additional features of the disorder include facial dysmorphism and cognitive impairment (summary by Alders et al., 2014).&#13; Genetic Heterogeneity of Hennekam Lymphangiectasia-Lymphedema Syndrome&#13; See also HKLLS2 (616006), caused by mutation in the FAT4 gene (612411) on chromosome 4q28, and HKLLS3 (618154), caused by mutation in the ADAMTS3 gene (605011) on chromosome 4q13.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/860487">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_860583"><div><strong>Desbuquois dysplasia 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>860583</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4012146</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Desbuquois dysplasia (DBQD) is an autosomal recessive chondrodysplasia belonging to the multiple dislocation group and characterized by severe prenatal and postnatal growth retardation (stature less than -5 SD), joint laxity, short extremities, and progressive scoliosis. The main radiologic features are short long bones with metaphyseal splay, a 'Swedish key' appearance of the proximal femur (exaggerated trochanter), and advanced carpal and tarsal bone age with a delta phalanx (summary by Huber et al., 2009).&#13; Desbuquois dysplasia is clinically and radiographically heterogeneous, and had been classified into 2 types based on the presence (type 1) or absence (type 2) of characteristic hand anomalies, including an extra ossification center distal to the second metacarpal, delta phalanx, bifid distal thumb phalanx, and dislocation of the interphalangeal joints (Faivre et al., 2004). However, patients with and without these additional hand anomalies have been reported to have mutations in the same gene (see, e.g., CANT1); thus, these features are not distinctive criteria to predict the molecular basis of DBQD (Furuichi et al., 2011). In addition, Kim et al. (2010) described another milder variant of DBQD with almost normal outwardly appearing hands, but significant radiographic changes, including short metacarpals, elongated phalanges, and remarkably advanced carpal bone age. However, there is no accessory ossification center distal to the second metacarpal, and patients do not have thumb anomalies. Similar changes occur in the feet. These patients also tend to develop precocious osteoarthritis of the hand and spine with age. This phenotype is sometimes referred to as the 'Kim variant' of DBQD (Furuichi et al., 2011).&#13; Genetic Heterogeneity of Desbuquois Dysplasia&#13; DBQD2 (615777) is caused by mutation in the XYLT1 gene (608124) on chromosome 16p12.&#13; Two unrelated patients with immunodeficiency-23 (IMD23; 615816), due to mutation in the PGM3 gene (172100), were reported to have skeletal features reminiscent of DBQD.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/860583">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_860832"><div><strong>SSR4-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>860832</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4012395</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital disorder of glycosylation type Iy (CDG1Y) is an X-linked disorder characterized by developmental delay, speech delay, impaired intellectual development, muscular hypotonia, microcephaly, and distinctive facial features (summary by Johnsen et al., 2024).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/860832">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862201"><div><strong>Intellectual disability-severe speech delay-mild dysmorphism syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862201</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4013764</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">FOXP1 syndrome is characterized by delays in early motor and language milestones, mild-to-severe intellectual deficits, speech and language impairment in all individuals regardless of level of cognitive abilities, and behavior abnormalities (including autism spectrum disorder or autistic features, attention-deficit/hyperactivity disorder, anxiety, repetitive behaviors, sleep disturbances, and sensory symptoms). Other common findings are oromotor dysfunction (contributing to speech and feeding difficulties), refractive errors, strabismus, cardiac abnormalities, renal abnormalities, cryptorchidism, hypertonia, hearing loss, and epilepsy. To date, more than 200 individuals have been identified with FOXP1 syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862201">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862731"><div><strong>Desbuquois dysplasia 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862731</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014294</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Desbuquois dysplasia, which belongs to the multiple dislocation group of disorders, is characterized by dislocations of large joints, severe pre- and postnatal growth retardation, joint laxity, and flat face with prominent eyes. Radiologic features include short long bones with an exaggerated trochanter that gives a 'monkey wrench' appearance to the proximal femur, and advanced carpal and tarsal ossification (summary by Bui et al., 2014).&#13; For a discussion of genetic heterogeneity of Desbuquois dysplasia, see DBQD1 (251450).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862731">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862780"><div><strong>Intellectual disability, autosomal recessive 42</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862780</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014343</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with dysmorphic features, spasticity, and brain abnormalities (NEDDSBA) is an autosomal recessive neurodevelopmental disorder characterized by severely delayed global development, with hypotonia, impaired intellectual development, and poor or absent speech. Most patients have spasticity with limb hypertonia and brisk tendon reflexes. Additional features include nonspecific dysmorphic facial features, structural brain abnormalities, and cortical visual impairment (summary by Bosch et al., 2015). Novarino et al. (2014) labeled the disorder 'spastic paraplegia-67' (SPG67). The disorder is caused by a defect in glycosylphosphatidylinositol (GPI) biosynthesis.&#13; For a discussion of genetic heterogeneity of GPI biosynthesis defects, see GPIBD1 (610293).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862780">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862791"><div><strong>Pontocerebellar hypoplasia type 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862791</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014354</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pontocerebellar hypoplasia type 9 (PCH9) is an autosomal recessive neurodevelopmental and neurodegenerative disorder characterized by severely delayed psychomotor development, progressive microcephaly, spasticity, seizures, and brain abnormalities, including brain atrophy, thin corpus callosum, and delayed myelination (summary by Akizu et al., 2013).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of PCH, see PCH1 (607596).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862791">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862808"><div><strong>Immunodeficiency 23</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862808</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014371</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">IMD23 is an autosomal recessive primary immunodeficiency syndrome characterized by onset of recurrent infections, usually respiratory or cutaneous, in early childhood. Immune workup usually shows neutropenia, lymphopenia, eosinophilia, and increased serum IgE or IgA. Neutrophil chemotactic defects have also been reported. Infectious agents include bacteria, viruses, and fungi. Many patients develop atopic dermatitis, eczema, and other signs of autoinflammation. Affected individuals may also show developmental delay or cognitive impairment of varying severity (summary by Bjorksten and Lundmark, 1976 and Zhang et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862808">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862823"><div><strong>Intellectual disability, autosomal recessive 43</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862823</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014386</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive intellectual developmental disorder-43 (MRT43) is characterized by impaired intellectual development, poor language skills, short stature, and dysmorphic features. Some patients may have significant motor delays (summary by Gangfuss et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862823">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862851"><div><strong>Intellectual disability, autosomal dominant 24</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862851</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014414</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Vulto-van Silfout-de Vries syndrome (VSVS) is an intellectual developmental disorder characterized by delayed psychomotor development, poor expressive speech, and behavioral abnormalities, including autistic features and poor eye contact. Most patients have additional nonspecific features, including hypotonia and gait abnormalities, seizures, which may be refractory, high pain threshold, and sleep disturbances (summary by Nabais Sa et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862851">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862856"><div><strong>AHDC1-related intellectual disability - obstructive sleep apnea - mild dysmorphism syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862856</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014419</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The main features of Xia-Gibbs syndrome (XGS), present in a majority of affected individuals, include delayed motor milestones, speech delay with severely limited or absent speech, moderate-to-severe cognitive impairment, hypotonia, structural brain anomalies, and nonspecific dysmorphic features. Other features may include sleep apnea, movement disorders (ataxia, tremors, and bradykinesias) that often become apparent in childhood or adolescence, short stature, seizures, eye anomalies, behavioral concerns, autism spectrum disorder, scoliosis, and laryngomalacia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862856">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862872"><div><strong>Autism spectrum disorder due to AUTS2 deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862872</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014435</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic syndromic intellectual disability characterized by global developmental delay and borderline to severe intellectual disability, autism spectrum disorder with obsessive behavior, stereotypies, hyperactivity but frequently friendly and affable personality, feeding difficulties, short stature, muscular hypotonia, microcephaly, characteristic dysmorphic features (hypertelorism, high arched eyebrows, ptosis, deep and/or broad nasal bridge, broad/prominent nasal tip, short and/or upturned philtrum, narrow mouth, and micrognathia), and skeletal anomalies (kyphosis and/or scoliosis, arthrogryposis, slender habitus and extremities). Other clinical features may include hernias, congenital heart defects, cryptorchidism and seizures.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862872">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862877"><div><strong>Mitochondrial complex III deficiency nuclear type 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862877</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014440</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex III deficiency, nuclear type 8, is an autosomal recessive disorder characterized by progressive neurodegeneration with onset in childhood. Affected individuals may have normal or delayed early development, and often have episodic acute neurologic decompensation and regression associated with febrile illnesses. The developmental regression results in variable intellectual disability and motor deficits, such as hypotonia, axial hypertonia, and spasticity; some patients may lose the ability to walk independently. Laboratory studies show increased serum lactate and isolated deficiency of mitochondrial complex III in skeletal muscle and fibroblasts. Brain imaging shows a characteristic pattern of multifocal small cystic lesions in the periventricular and deep cerebral white matter (summary by Dallabona et al., 2016).&#13; For a discussion of genetic heterogeneity of mitochondrial complex III deficiency, see MC3DN1 (124000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862877">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862925"><div><strong>Pontocerebellar hypoplasia type 2E</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862925</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014488</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pontocerebellar hypoplasia type 2E (PCH2E) is an autosomal recessive neurodegenerative disorder characterized by profoundly impaired intellectual development, progressive microcephaly, spasticity, and early-onset epilepsy (summary by Feinstein et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of pontocerebellar hypoplasia type 2, see PCH2A (277470).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862925">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862968"><div><strong>Developmental and epileptic encephalopathy, 24</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862968</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014531</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-24 (DEE24) is a neurologic disorder characterized by onset of refractory seizures in infancy, severely impaired global development, intellectual disability, and behavioral abnormalities. Most patients have onset of variable types of seizures between 4 and 13 months of age, but earlier onset in the first days of life has also been reported. Seizures are often triggered by fever, at least initially; status epilepticus may occur (summary by Nava et al., 2014 and Marini et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862968">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862975"><div><strong>ADNP-related multiple congenital anomalies - intellectual disability - autism spectrum disorder</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862975</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014538</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ADNP-related disorder is characterized by hypotonia, severe speech and motor delay, mild-to-severe intellectual disability, and characteristic facial features (prominent forehead, high anterior hairline, wide and depressed nasal bridge, and short nose with full, upturned nasal tip) based on a cohort of 78 individuals. Features of autism spectrum disorder are common (stereotypic behavior, impaired social interaction). Other common findings include additional behavioral problems, sleep disturbance, brain abnormalities, seizures, feeding issues, gastrointestinal problems, visual dysfunction (hypermetropia, strabismus, cortical visual impairment), musculoskeletal anomalies, endocrine issues including short stature and hormonal deficiencies, cardiac and urinary tract anomalies, and hearing loss.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862975">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862982"><div><strong>Tatton-Brown-Rahman overgrowth syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862982</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014545</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tatton-Brown-Rahman syndrome (TBRS) is an overgrowth / intellectual disability syndrome characterized by length/height and/or head circumference =2 standard deviations above the mean for age and sex, obesity / increased weight, intellectual disability that ranges from mild to severe, joint hypermobility, hypotonia, behavioral/psychiatric issues, kyphoscoliosis, and seizures. Individuals with TBRS have subtle dysmorphic features, including a round face with coarse features, thick horizontal low-set eyebrows, narrow (as measured vertically) palpebral fissures, and prominent upper central incisors. The facial gestalt is most easily recognizable in the teenage years. TBRS may be associated with an increased risk of developing acute myeloid leukemia. There are less clear associations with aortic root dilatation and increased risk of other hematologic and solid tumors.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862982">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863175"><div><strong>Megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863175</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014738</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MPPH (megalencephaly-postaxial polydactyly-polymicrogyria-hydrocephalus) syndrome is a developmental brain disorder characterized by megalencephaly (brain overgrowth) with the cortical malformation bilateral perisylvian polymicrogyria (BPP). At birth the occipital frontal circumference (OFC) ranges from normal to 6 standard deviations (SD) above the mean for age, sex, and gestational age; in older individuals the range is from 3 to 10 SD above the mean. A variable degree of ventriculomegaly is seen in almost all children with MPPH syndrome; nearly 50% of individuals have frank hydrocephalus. Neurologic problems associated with BPP include oromotor dysfunction (100%), epilepsy (50%), and mild-to-severe intellectual disability (100%). Postaxial hexadactyly occurs in 50% of individuals with MPPH syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863175">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863182"><div><strong>Intellectual disability, autosomal recessive 44</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863182</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014745</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the METTL23 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863182">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863301"><div><strong>Intellectual disability, autosomal recessive 45</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863301</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014864</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the FBXO31 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863301">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863395"><div><strong>Hyperphosphatasia with intellectual disability syndrome 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863395</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014958</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GPIBD11 is an autosomal recessive disorder characterized by neonatal hypotonia, lack of psychomotor development, and variable seizures. Some patients may have dysmorphic features or increased serum alkaline phosphatase. The disorder is caused by a defect in glycosylphosphatidylinositol (GPI) biosynthesis (summary by Hogrebe et al., 2016).&#13; For a discussion of genetic heterogeneity of GPI biosynthesis defects, see GPIBD1 (610293).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863395">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863434"><div><strong>Microcephaly, short stature, and impaired glucose metabolism 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863434</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4014997</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Microcephaly, short stature, and impaired glucose metabolism-1 (MSSGM1) is an autosomal recessive syndrome characterized by microcephaly associated with impaired intellectual development, short stature, and early-onset diabetes or abnormalities of glucose homeostasis (Igoillo-Esteve et al., 2013; Gillis et al., 2014).&#13; Genetic Heterogeneity of Microcephaly, Short Stature, and Impaired Glucose Metabolism&#13; MSSGM2 (616817) is caused by mutation in the PPP1R15B gene (613257) on chromosome 1q32.&#13; Also see Wolcott-Rallison syndrome (226980), which is characterized by multiple epiphyseal dysplasia, microcephaly, short stature, and early-onset diabetes mellitus and is caused by mutation in the EIF2AK3 gene (604032) on chromosome 2p11.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863434">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863578"><div><strong>Intellectual disability, autosomal dominant 29</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863578</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015141</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">SETBP1 haploinsufficiency disorder (SETBP1-HD) is characterized by hypotonia and mild motor developmental delay; intellectual abilities ranging from normal to severe disability; speech and language disorder; behavioral problems (most commonly attention/concentration deficits and hyperactivity, impulsivity), and refractive errors and strabismus. Typically children with SETBP1-HD whose intellect is in the normal or borderline range (IQ 80-90) were diagnosed following genetic testing for behavioral problems and/or severe speech and language disorders (respectively: the inability to produce sounds in words correctly, and deficits in the understanding and/or expression of words and sentences). To date, 47 individuals with SETBP1-HD have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863578">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863623"><div><strong>Ketoacidosis due to monocarboxylate transporter-1 deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863623</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015186</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare disorder of ketone body transport characterized by recurrent episodes of ketoacidosis provoked by fasting or infections in the first years of life. The episodes are typically preceded by poor feeding and vomiting and are associated with dehydration, in severe cases also with decreased consciousness and insufficient respiratory drive. Hypoglycemia is observed only infrequently. Patients with homozygous mutations tend to present at a younger age, have more profound ketoacidosis, and may show mild to moderate developmental delay in addition.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863623">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863720"><div><strong>Intellectual disability, autosomal recessive 46</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863720</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015283</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the NDST1 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863720">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863738"><div><strong>Autosomal recessive spinocerebellar ataxia 17</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863738</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015301</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-17 (SCAR17) is a neurologic disorder characterized by onset of gait ataxia and cerebellar signs in early childhood. Patients also have variably impaired intellectual development (summary by Evers et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863738">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863753"><div><strong>Developmental and epileptic encephalopathy, 27</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863753</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015316</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GRIN2B-related neurodevelopmental disorder is characterized by mild to profound developmental delay / intellectual disability (DD/ID) in all affected individuals. Muscle tone abnormalities (spasticity and/or hypotonia, occasionally associated with feeding difficulties), as well as epilepsy and autism spectrum disorder (ASD) / behavioral issues, are common. Other infantile- or childhood-onset findings include microcephaly; dystonic, dyskinetic, or choreiform movement disorder; and/or cortical visual impairment. Brain MRI reveals a malformation of cortical development in a minority of affected individuals. To date, fewer than 100 individuals with GRIN2B-related neurodevelopmental disorder have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863753">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863794"><div><strong>PURA-related severe neonatal hypotonia-seizures-encephalopathy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863794</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015357</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PURA-related neurodevelopmental disorders include PURA syndrome, caused by a heterozygous pathogenic sequence variant in PURA, and 5q31.3 deletion syndrome, caused by a genomic 5q31.3 deletion encompassing all or part of PURA. PURA-related neurodevelopmental disorders are characterized by moderate-to-severe neurodevelopmental delay with absence of speech in most and lack of independent ambulation in many. Early-onset issues can include hypotonia, hypothermia, hypersomnolence, feeding difficulties, excessive hiccups, recurrent central and obstructive apneas, epileptic seizures, abnormal nonepileptic movements (dystonia, dyskinesia, and dysconjugate eye movements), and abnormal vision. Congenital heart defects, urogenital malformations, skeletal abnormalities, and endocrine disorders occur, but are less common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863794">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863825"><div><strong>Microcephaly and chorioretinopathy 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863825</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015388</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Microcephaly and chorioretinopathy-2 is an autosomal recessive developmental disorder characterized by delayed psychomotor development, visual impairment, and short stature (summary by Martin et al., 2014).&#13; For a discussion of genetic heterogeneity of microcephaly and chorioretinopathy, see MCCRP1 (251270).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863825">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863881"><div><strong>Intellectual disability, autosomal recessive 47</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863881</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015444</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the FMN2 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863881">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863932"><div><strong>Cerebellar-facial-dental syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863932</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015495</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebellofaciodental syndrome is an autosomal recessive neurodevelopmental disorder characterized by delayed development, intellectual disability, abnormal facial and dental findings, and cerebellar hypoplasia (summary by Borck et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863932">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863942"><div><strong>Autosomal recessive spinocerebellar ataxia 18</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863942</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015505</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-18 (SCAR18) is a neurologic disorder characterized by delayed psychomotor development, severely impaired gait due to cerebellar ataxia, ocular movement abnormalities, and intellectual disability. Brain imaging shows progressive cerebellar atrophy (summary by Hills et al., 2013).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863942">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863995"><div><strong>Motor developmental delay due to 14q32.2 paternally expressed gene defect</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863995</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015558</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Temple syndrome is a short stature disorder of imprinting. The cardinal features are low birth weight, hypotonia and motor delay, feeding problems early in life, early puberty, and significantly reduced final height. Facial features include a broad forehead and short nose with a wide nasal tip, and the majority of patients have small hands and feet. However, many of the clinical features are nonspecific, making diagnosis difficult. In addition, isodisomy may uncover recessive disorders, which may influence the phenotype in maternal uniparental disomy of chromosome 14 (UPD14mat) cases (summary by Ioannides et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863995">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_864147"><div><strong>Tenorio syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>864147</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015710</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tenorio syndrome (TNORS) is characterized by overgrowth, macrocephaly, and impaired intellectual development. Some patients may have mild hydrocephaly, hypoglycemia, and inflammatory diseases resembling Sjogren syndrome (270150) (summary by Tenorio et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/864147">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_864165"><div><strong>Neurologic, endocrine, and pancreatic disease, multisystem, infantile-onset 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>864165</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4015728</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Infantile-onset multisystem neurologic, endocrine, and pancreatic disease-1 (IMNEPD1) is an autosomal recessive multisystemic disorder with variable expressivity. The core features usually include global developmental delay with impaired intellectual development and speech delay, ataxia, sensorineural hearing loss, and pancreatic insufficiency. Additional features may include peripheral neuropathy, postnatal microcephaly, dysmorphic facial features, and cerebellar atrophy. However, some patients may not display all features (summary by Picker-Minh et al., 2016, Sharkia et al., 2017).&#13; Genetic Heterogeneity of Infantile-Onset Multisystem Neurologic, Endocrine, and Pancreatic Disease&#13; See also IMNEPD2 (619418), caused by mutation in the YARS1 gene (603623) on chromosome 1p35.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/864165">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_865608"><div><strong>Trichothiodystrophy 3, photosensitive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>865608</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4017171</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Trichothiodystrophy is a rare autosomal recessive disorder in which patients have brittle, sulfur-deficient hair that displays a diagnostic alternating light and dark banding pattern, called 'tiger tail banding,' under polarizing microscopy. TTD patients display a wide variety of clinical features, including cutaneous, neurologic, and growth abnormalities. Common additional clinical features are ichthyosis, intellectual/developmental disabilities, decreased fertility, abnormal characteristics at birth, ocular abnormalities, short stature, and infections. There are both photosensitive and nonphotosensitive forms of the disorder. Patients with TTD have not been reported to have a predisposition to cancer (summary by Faghri et al., 2008).&#13; For a discussion of genetic heterogeneity of TTD, see 601675.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/865608">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_870434"><div><strong>Ectodermal dysplasia 4, hair/nail type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>870434</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4024880</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Some ectodermal dysplasias are here classified as congenital disorders characterized by abnormal development in 2 or more ectodermal structures (hair, nails, teeth, and sweat glands) without other systemic findings. Ectodermal dysplasia of the hair/nail type is a rare congenital condition characterized by hypotrichosis and nail dystrophy without nonectodermal or other ectodermal manifestations.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/870434">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_873604"><div><strong>3-methylglutaconic aciduria with deafness, encephalopathy, and Leigh-like syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>873604</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4040739</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The phenotypic spectrum of SERAC1 deficiency comprises MEGD(H)EL syndrome (3-methylglutaconic aciduria with deafness-dystonia, [hepatopathy], encephalopathy, and Leigh-like syndrome), juvenile-onset complicated hereditary spastic paraplegia (in 1 consanguineous family), and adult-onset generalized dystonia (in 1 adult male). MEGD(H)EL syndrome is characterized in neonates by hypoglycemia and a sepsis-like clinical picture for which no infectious agent can be found. During the first year of life feeding problems, failure to thrive, and/or truncal hypotonia become evident; many infants experience (transient) liver involvement ranging from undulating transaminases to prolonged hyperbilirubinemia and near-fatal liver failure. By age two years progressive deafness, dystonia, and spasticity prevent further psychomotor development and/or result in loss of acquired skills. Affected children are completely dependent on care for all activities of daily living; speech is absent.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/873604">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_888408"><div><strong>Beta-D-mannosidosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>888408</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4048196</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Beta-mannosidosis (MANSB) is an autosomal recessive lysosomal storage disease of glycoprotein catabolism caused by a deficiency of lysosomal beta-mannosidase activity. The most severely affected patients show developmental delay and mental retardation, but there are differing levels of severity and some patients may have comparatively mild disease (Bedilu et al., 2002). The disorder was first described in goats (Jones and Dawson, 1981), who have a more severe neurodegenerative disorder than that seen in humans.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/888408">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_907954"><div><strong>Congenital hyperammonemia, type I</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>907954</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4082171</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Carbamoyl phosphate synthetase I deficiency is an autosomal recessive inborn error of metabolism of the urea cycle which causes hyperammonemia. There are 2 main forms: a lethal neonatal type and a less severe, delayed-onset type (summary by Klaus et al., 2009).&#13; Urea cycle disorders are characterized by the triad of hyperammonemia, encephalopathy, and respiratory alkalosis. Five disorders involving different defects in the biosynthesis of the enzymes of the urea cycle have been described: ornithine transcarbamylase deficiency (311250), carbamyl phosphate synthetase deficiency, argininosuccinate synthetase deficiency, or citrullinemia (215700), argininosuccinate lyase deficiency (207900), and arginase deficiency (207800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/907954">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_896665"><div><strong>Autosomal dominant nonsyndromic hearing loss 40</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>896665</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4084708</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal dominant nonsyndromic deafness in which the cause of the disease is a mutation in the CRYM gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/896665">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_905986"><div><strong>MEND syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>905986</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4085243</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Male EBP disorder with neurologic defects (MEND) is an X-linked recessive disorder representing a continuous phenotypic spectrum with variable manifestations associated with a defect in sterol biosynthesis. Features include intellectual disability, short stature, scoliosis, digital abnormalities, cataracts, and dermatologic abnormalities. Not all patients show all features, and the severity is highly variable. Molecular studies indicate that affected males are hemizygous for a nonmosaic hypomorphic EBP allele. Carrier females are generally clinically asymptomatic, but may show biochemical abnormalities (summary by Arnold et al., 2012 and Barboza-Cerda et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/905986">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_894554"><div><strong>Cognitive impairment - coarse facies - heart defects - obesity - pulmonary involvement - short stature - skeletal dysplasia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>894554</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4085597</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CHOPS syndrome is a disorder involving multiple abnormalities that are present from birth (congenital). The name "CHOPS" is an abbreviation for a list of features of the disorder including cognitive impairment, coarse facial features, heart defects, obesity, lung (pulmonary) involvement, short stature, and skeletal abnormalities.\n\nChildren with CHOPS syndrome have intellectual disability and delayed development of skills such as sitting and walking. Characteristic facial features include a round face; thick hair; thick eyebrows that grow together in the middle (synophrys); wide-set, bulging eyes with long eyelashes; a short nose; and down-turned corners of the mouth.\n\nMost affected individuals are born with a heart defect called patent ductus arteriosus (PDA). The ductus arteriosus is a connection between two major arteries, the aorta and the pulmonary artery. This connection is open during fetal development and normally closes shortly after birth. However, the ductus arteriosus remains open, or patent, in babies with PDA. If untreated, this heart defect causes infants to breathe rapidly, feed poorly, and gain weight slowly; in severe cases, it can lead to heart failure. Multiple heart abnormalities have sometimes been found in children with CHOPS syndrome. In addition to PDA, affected individuals may have ventricular septal defect, which is a defect in the muscular wall (septum) that separates the right and left sides of the heart's lower chamber.\n\nPeople with CHOPS syndrome have abnormalities of the throat and airways that cause momentary cessation of breathing while asleep (obstructive sleep apnea). These abnormalities can also cause affected individuals to breathe food or fluids into the lungs accidentally, which can lead to a potentially life-threatening bacterial lung infection (aspiration pneumonia) and chronic lung disease. Affected individuals are shorter than more than 97 percent of their peers and are overweight for their height. They also have skeletal differences including unusually short fingers and toes (brachydactyly) and abnormally-shaped spinal bones (vertebrae).\n\nOther features that can occur in CHOPS syndrome include a small head size (microcephaly); hearing loss; clouding of the lens of the eye (cataract); a single, horseshoe-shaped kidney; and, in affected males, undescended testes (cryptorchidism).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/894554">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_898669"><div><strong>Luscan-Lumish syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>898669</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4085873</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Luscan-Lumish syndrome (LLS) is characterized by macrocephaly, intellectual disability, speech delay, low sociability, and behavioral problems. More variable features include postnatal overgrowth, obesity, advanced carpal ossification, developmental delay, and seizures (Luscan et al., 2014; Lumish et al., 2015)</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/898669">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1672478"><div><strong>Familial infantile bilateral striatal necrosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1672478</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4087174</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bilateral striatal necrosis (BSN) encompasses a heterogeneous group of neurologic disorders with different causation. Familial infantile striatal degeneration is rare and can be inherited as an autosomal recessive or mitochondrial (see 500003) disorder. The familial form has an insidious onset and a slowly progressive course; the sporadic form is associated with acute systemic illness. Many features of BSN overlap with Leigh syndrome (see 256000) and certain metabolic disorders, including glutaric acidemia I (231670) and methylmalonic aciduria (251000). See also Aicardi-Goutieres syndrome (225750) (Mito et al., 1986; De Meirleir et al., 1995).&#13; Genetic Heterogeneity of Striatonigral Degeneration&#13; Childhood-onset striatonigral degeneration (617054) is caused by mutation in the VAC14 gene (604632) on chromosome 16q22.&#13; See also adult-onset autosomal dominant striatal degeneration (ADSD; 609161), caused by mutation in the PDE8B gene (603390) on chromosome 5q13, and early-onset dystonia-37 with striatal lesions (DYT37; 620427), caused by mutation in the NUP54 gene (607607) on chromosome 4q21.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1672478">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_907277"><div><strong>Intellectual disability, autosomal dominant 34</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>907277</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225156</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia, speech delay, and dysmorphic facies (NEDHSF) is characterized by global developmental delay with hypotonia, delayed motor skills, impaired intellectual development, poor or absent speech, and behavioral abnormalities. The severity of developmental delay is highly variable, ranging from mild to profound. Some patients are nonverbal and nonambulatory. Additional features may include early feeding difficulties with poor overall growth, various types of seizures (in about half of patients), brain imaging abnormalities, and dysmorphic facial features (Gehin et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/907277">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_905041"><div><strong>Cerebellar atrophy, visual impairment, and psychomotor retardation;</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>905041</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225172</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/905041">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_905079"><div><strong>Meier-Gorlin syndrome 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>905079</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225188</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any Meier-Gorlin syndrome in which the cause of the disease is a mutation in the GMNN gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/905079">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_902346"><div><strong>Severe intellectual disability-corpus callosum agenesis-facial dysmorphism-cerebellar ataxia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>902346</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225193</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic neurological disorder with characteristics of congenital microcephaly, severe intellectual disability, hypertonia at birth lessening with age, ataxia and specific dysmorphic facial features including hirsutism, low anterior hairline and bitemporal narrowing arched thick and medially sparse eyebrows, long eyelashes, lateral upper eyelids swelling and a skin fold partially covering the inferior eyelids, low-set posteriorly rotated protruding ears, anteverted nares and a full lower lip. Brain imaging shows partial to almost complete agenesis of the corpus callosum and variable degrees of cerebellar hypoplasia. Caused by homozygous mutation in the FRMD4A gene on chromosome 10p13.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/902346">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_906140"><div><strong>Microcephaly, short stature, and impaired glucose metabolism 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>906140</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225195</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Microcephaly, short stature, and impaired glucose metabolism-2 (MSSGM2) is an autosomal recessive syndrome characterized by microcephaly associated with impaired intellectual development, and short stature. Patients develop diabetes in the second or third decade of life, and hypothyroidism and delayed puberty have also been reported (Abdulkarim et al., 2015; Kernohan et al., 2015).&#13; For a discussion of genetic heterogeneity of microcephaly, short stature, and impaired glucose metabolism, see MSSGM1 (616033).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/906140">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_903542"><div><strong>Lamb-Shaffer syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>903542</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225202</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Lamb-Shaffer syndrome is a neurodevelopmental disorder characterized by global developmental delay, intellectual disability, poor expressive speech, and mild dysmorphic facial features. Additional variable skeletal abnormalities may also be present (summary by Nesbitt et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/903542">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_897828"><div><strong>Spastic paraplegia-severe developmental delay-epilepsy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>897828</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225215</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia and psychomotor retardation with or without seizures is an autosomal recessive complex neurodevelopmental disorder with onset in infancy. Affected children show hypotonia followed by severely impaired global development and significant motor disability. Most develop seizures in childhood and have speech delay. Other features, such as ocular abnormalities, foot deformities, hypoplasia of the corpus callosum, and decreased white matter, are more variable (summary by Hollstein et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/897828">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_903243"><div><strong>Intellectual disability, autosomal recessive 51</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>903243</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225220</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the HNMT gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/903243">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_906646"><div><strong>Macrothrombocytopenia-lymphedema-developmental delay-facial dysmorphism-camptodactyly syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>906646</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225222</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Takenouchi-Kosaki syndrome is a highly heterogeneous autosomal dominant complex congenital developmental disorder affecting multiple organ systems. The core phenotype includes delayed psychomotor development with variable intellectual disability, dysmorphic facial features, and cardiac, genitourinary, and hematologic or lymphatic defects, including thrombocytopenia and lymphedema. Additional features may include abnormalities on brain imaging, skeletal anomalies, and recurrent infections. Some patients have a milder disease course reminiscent of Noonan syndrome (see, e.g., NS1, 163950) (summary by Martinelli et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/906646">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_902880"><div><strong>Skin creases, congenital symmetric circumferential, 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>902880</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225225</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Congenital symmetric circumferential skin creases is characterized by the folding of excess skin, which leads to ringed creases, primarily of the limbs. Affected individuals also exhibit intellectual disability, cleft palate, and dysmorphic features (summary by Isrie et al., 2015).&#13; For a discussion of genetic heterogeneity of congenital symmetric circumferential skin creases, see CSCSC1 (156610).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/902880">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_899837"><div><strong>SLC39A8-CDG</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>899837</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225234</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SLC39A8-CDG is characterized by mild-to-profound developmental delay, intellectual disability, hypotonia, feeding difficulties with poor weight gain and growth deficiency, dystonia, spasticity, epilepsy, ophthalmologic manifestations including cortical blindness and strabismus, and sensorineural hearing impairment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/899837">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_905068"><div><strong>Hypomyelinating leukodystrophy 12</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>905068</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225247</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypomyelinating leukodystrophy-12 (HLD12) is an autosomal recessive neurologic disorder characterized by severely delayed or even lack of psychomotor development that becomes apparent in the first months of life. Patients are markedly disabled, with acquired microcephaly, lack of speech, and often lack of spontaneous movement due to hypotonia and spasticity. Brain imaging shows delayed myelination (summary by Edvardson et al., 2015).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of HLD, see 312080.&#13; In a review of the pathogenesis of disorders with prominent dystonia or opisthotonic posturing as a feature, Monfrini et al. (2021) classified HLD12 as belonging to a group of neurologic disorders termed 'HOPS-associated neurologic disorders (HOPSANDs), which are caused by mutations in genes encoding various components of the autophagic/endolysosomal system, including VPS11.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/905068">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_900192"><div><strong>Spastic tetraplegia-thin corpus callosum-progressive postnatal microcephaly syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>900192</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225254</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic tetraplegia, thin corpus callosum, and progressive microcephaly is an autosomal recessive neurodevelopmental disorder characterized by onset of those features and severely impaired global development in early infancy. Most patients are unable to achieve independent walking or speech; some patients have seizures (summary by Srour et al., 2015 and Heimer et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/900192">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_894862"><div><strong>PMP22-RAI1 contiguous gene duplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>894862</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225255</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Yuan-Harel-Lupski syndrome (YUHAL) is a complex neurodevelopmental disorder characterized by global developmental delay and early-onset peripheral neuropathy. The disorder comprises features of both demyelinating Charcot-Marie-Tooth disease type 1A (CMT1A; 118220), which results from duplication of the PMP22 gene on 17p12, and Potocki-Lupski syndrome (PTLS; 610883), which results from duplication of a slightly proximal region on 17p11.2 that includes the RAI1 gene. These 2 loci are about 2.5 Mb apart. The resultant YUHAL phenotype may be more severe in comparison to the individual contributions of each gene, with particularly early onset of peripheral neuropathy and features of both central and peripheral nervous system involvement (summary by Yuan et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/894862">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_899149"><div><strong>Developmental and epileptic encephalopathy, 34</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>899149</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225257</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SLC12A5-related epilepsy of infancy with migrating focal seizures (SLC12A5-EIMFS), reported to date in nine children, is characterized by onset of seizures before age six months and either developmental delay or developmental regression with seizure onset. Of these nine children, six had severe developmental delay with no progress of abilities and three made notable neurodevelopmental progress. Eight had postnatal microcephaly and hypotonia. In most children epilepsy begins as focal motor seizures (typically involving head and eye deviation) that become multifocal and intractable to conventional anti-seizure medication (ASM).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/899149">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_899689"><div><strong>Macrocephaly-intellectual disability-neurodevelopmental disorder-small thorax syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>899689</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225259</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Smith-Kingsmore syndrome (SKS) is a rare autosomal dominant syndromic intellectual disability syndrome characterized by macrocephaly, seizures, umbilical hernia, and facial dysmorphic features including frontal bossing, midface hypoplasia, small chin, hypertelorism with downslanting palpebral fissures, depressed nasal bridge, smooth philtrum, and thin upper lip (Smith et al., 2013; Baynam et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/899689">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_896409"><div><strong>Skeletal overgrowth-craniofacial dysmorphism-hyperelastic skin-white matter lesions syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>896409</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225270</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Kosaki overgrowth syndrome (KOGS) is characterized by a facial gestalt involving prominent forehead, proptosis, downslanting palpebral fissures, broad nasal bridge, thin upper lip, and pointed chin. Affected individuals are tall, with an elongated lower segment, and have large hands and feet. Skin is hyperelastic and fragile. Patients exhibit progressive dilatory and vascular changes in basilar/vertebral and coronary arteries starting in the teenage years (Takenouchi et al., 2015; Takenouchi et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/896409">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_900671"><div><strong>Au-Kline syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>900671</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225274</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Au-Kline syndrome is characterized by developmental delay and hypotonia with moderate-to-severe intellectual disability, and typical facial features that include long palpebral fissures, ptosis, shallow orbits, large and deeply grooved tongue, broad nose with a wide nasal bridge, and downturned mouth. Congenital heart disease, hydronephrosis, palate abnormalities, and oligodontia are reported in the majority of affected individuals. Variable autonomic dysfunction (gastrointestinal dysmotility, high pain threshold, heat intolerance, recurrent fevers, abnormal sweating) is found in more than one third of affected individuals. Additional complications can include craniosynostosis, feeding difficulty, vision issues, hearing loss, osteopenia, and other skeletal anomalies. Epilepsy and brain malformations are rare.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/900671">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_909304"><div><strong>Intellectual disability, autosomal dominant 39</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>909304</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225296</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An autosomal dominant condition caused by mutation(s) in the MYT1L gene, encoding myelin transcription factor 1-like protein. It is characterized by intellectual disability and mild dysmorphic facial features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/909304">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_897960"><div><strong>Hypomyelinating leukodystrophy 11</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>897960</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225305</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">POLR3-related leukodystrophy, a hypomyelinating leukodystrophy with specific features on brain MRI, is characterized by varying combinations of four major clinical findings: Neurologic dysfunction, typically predominated by motor dysfunction (progressive cerebellar dysfunction, and to a lesser extent extrapyramidal [i.e., dystonia], pyramidal [i.e., spasticity] and cognitive dysfunctions). Abnormal dentition (delayed dentition, hypodontia, oligodontia, and abnormally placed or shaped teeth). Endocrine abnormalities such as short stature (in ~50% of individuals) with or without growth hormone deficiency, and more commonly, hypogonadotropic hypogonadism manifesting as delayed, arrested, or absent puberty. Ocular abnormality in the form of myopia, typically progressing over several years and becoming severe. POLR3-related leukodystrophy and 4H leukodystrophy are the two recognized terms for five previously described overlapping clinical phenotypes (initially described as distinct entities before their molecular basis was known). These include: Hypomyelination, hypodontia, hypogonadotropic hypogonadism (4H syndrome); Ataxia, delayed dentition, and hypomyelination (ADDH); Tremor-ataxia with central hypomyelination (TACH); Leukodystrophy with oligodontia (LO); Hypomyelination with cerebellar atrophy and hypoplasia of the corpus callosum (HCAHC). Age of onset is typically in early childhood but later-onset cases have also been reported. An infant with Wiedemann-Rautenstrauch syndrome (neonatal progeroid syndrome) was recently reported to have pathogenic variants in POLR3A on exome sequencing. Confirmation of this as a very severe form of POLR3-related leukodystrophy awaits replication in other individuals with a clinical diagnosis of Wiedemann-Rautenstrauch syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/897960">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_894363"><div><strong>Congenital insensitivity to pain-hypohidrosis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>894363</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225308</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary sensory and autonomic neuropathy type VIII (HSAN8) is an autosomal recessive neurologic disorder characterized by congenital insensitivity to pain resulting in ulceration to the fingers, tongue, lips, and other distal appendages. Affected individuals may also have decreased sweating and tear production (summary by Chen et al., 2015).&#13; For a discussion of genetic heterogeneity of hereditary sensory and autonomic neuropathy, see HSAN1A (162400).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/894363">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_903483"><div><strong>Acrofacial dysostosis Cincinnati type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>903483</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225317</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The Cincinnati type of acrofacial dysostosis is a ribosomopathy characterized by a spectrum of mandibulofacial dysostosis phenotypes, with or without extrafacial skeletal defects (Weaver et al., 2015). In addition, a significant number of neurologic abnormalities have been reported, ranging from mild delays to refractory epilepsy, as well as an increased incidence of congenital heart defects, primarily septal in nature (Smallwood et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/903483">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_897567"><div><strong>Zimmermann-Laband syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>897567</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225321</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Zimmerman-Laband syndrome is a developmental disorder characterized by facial dysmorphism with gingival enlargement, bulbous soft nose, and think floppy ears, nail aplasia or hypoplasia, hypertrichosis, joint hypertextensibility, hepato(spleno)megaly, and impaired intellectual development with or without epilepsy (summary by Kortum et al., 2015).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Zimmermann-Laband syndrome, see ZLS1 (135500).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/897567">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_906582"><div><strong>Hypomagnesemia, seizures, and intellectual disability 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>906582</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225333</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypomagnesemia, seizures, and impaired intellectual development-1 (HOMGSMR1) is characterized by onset of seizures associated with low serum magnesium in the first year of life. Affected individuals show variable degrees of delayed psychomotor development (summary by Arjona et al., 2014).&#13; Genetic Heterogeneity of Hypomagnesemia, Seizures, and Impaired Intellectual Development&#13; HOMGSMR2 (618314) is caused by mutation in the ATP1A1 gene (182310) on chromosome 1p13.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/906582">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_905904"><div><strong>Trichothiodystrophy 2, photosensitive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>905904</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225344</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Trichothiodystrophy is a rare autosomal recessive disorder in which patients have brittle, sulfur-deficient hair that displays a diagnostic alternating light and dark banding pattern, called 'tiger tail banding,' under polarizing microscopy. TTD patients display a wide variety of clinical features, including cutaneous, neurologic, and growth abnormalities. Common additional clinical features are ichthyosis, intellectual/developmental disabilities, decreased fertility, abnormal characteristics at birth, ocular abnormalities, short stature, and infections. There are both photosensitive and nonphotosensitive forms of the disorder. Patients with TTD have not been reported to have a predisposition to cancer (summary by Faghri et al., 2008).&#13; For a discussion of genetic heterogeneity of TTD, see 601675.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/905904">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_909501"><div><strong>Developmental and epileptic encephalopathy, 32</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>909501</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225350</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-32 (DEE32) is a neurologic disorder characterized by the onset of various seizure types, including febrile and myoclonic seizures, between about 5 and 17 months of age after normal early development. Thereafter, patients manifest global developmental delay or developmental regression with impaired intellectual development and poor or absent speech. Some may be able to attend special schools. Other features include ataxia with difficulty walking, deficient fine motor skills, tremor, and dysarthria. The seizures are initially refractory in some cases, but may remit later during childhood; however, neurologic deficits persist (summary by Syrbe et al., 2015).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/909501">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_897984"><div><strong>Intellectual disability-microcephaly-strabismus-behavioral abnormalities syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>897984</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225351</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">White-Sutton syndrome is a neurodevelopmental disorder characterized by a wide spectrum of cognitive dysfunction, developmental delays (particularly in speech and language acquisition), hypotonia, autism spectrum disorder, and other behavioral problems. Additional features commonly reported include seizures, refractive errors and strabismus, hearing loss, sleep disturbance (particularly sleep apnea), feeding and gastrointestinal problems, mild genital abnormalities in males, and urinary tract involvement in both males and females.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/897984">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_899880"><div><strong>Houge-Janssens syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>899880</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225352</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PPP2R1A-related neurodevelopmental disorder (NDD) is characterized by: severe, persistent hypotonia; developmental delay with variable intellectual outcomes, typically in the moderate-to-severe intellectual disability range; seizures (more commonly seen in individuals with microcephaly and/or severe intellectual disability); attention-deficit/hyperactivity disorder and other behavioral problems (anxiousness, repetitive movements, self-injurious or destructive behavior, and autism spectrum disorder); feeding and swallowing issues; and dysmorphic features of the head and face. A minority of affected individuals have ear anomalies, hearing loss, ptosis, generalized joint hypermobility, and patent ductus arteriosus. Brain MRI findings are nonspecific but typically include complete or partial agenesis of the corpus callosum. Nonprogressive ventriculomegaly may be seen in a subset of affected individuals and is often associated with specific pathogenic variants in PPP2R1A: c.544C&gt;T (p.Arg182Trp) and c.547C&gt;T (p.Arg183Trp).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/899880">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_894942"><div><strong>Developmental and epileptic encephalopathy, 31A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>894942</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225357</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-31A (DEE31A) is an autosomal dominant neurologic disorder characterized by the global developmental delay apparent in early infancy. Most individuals have onset of various types of refractory seizures in the first months or years of life, which exacerbates the psychomotor deficits. Patients have hypotonia and profound intellectual disability with absent speech and inability to walk or ataxic gait. Some patients may have additional features, including dysmorphic features or cortical visual impairment (summary by the EuroEPINOMICS-RES Consortium et al., 2014 and Deciphering Developmental Disorders Study, 2015).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/894942">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_899389"><div><strong>Intellectual disability, autosomal dominant 33</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>899389</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225375</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal dominant non-syndromic intellectual disability in which the cause of the disease is a mutation in the DPP6 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/899389">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_906606"><div><strong>Glutamate pyruvate transaminase 2 deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>906606</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225388</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with spastic paraplegia and microcephaly (NEDSPM) is an autosomal recessive neurologic syndrome characterized by delayed psychomotor development with delayed walking, moderately to severely impaired intellectual development, and poor or absent speech. More severely affected individuals show poor overall growth with progressive microcephaly, axial hypotonia, oromotor dysfunction with drooling, joint contractures, and spastic paraplegia resulting in walking difficulties. Some patients may develop seizures; nonspecific dysmorphic features have also been reported (summary by Hengel et al., 2018 and Ouyang et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/906606">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_903767"><div><strong>Autosomal dominant intellectual disability-craniofacial anomalies-cardiac defects syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>903767</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225396</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Arboleda-Tham syndrome (ARTHS) is an autosomal dominant disorder with the core features of impaired intellectual development, speech delay, microcephaly, cardiac anomalies, and gastrointestinal complications (summary by Kennedy et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/903767">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_899839"><div><strong>Intellectual disability, X-linked 99, syndromic, female-restricted</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>899839</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225416</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Female-restricted X-linked syndromic intellectual developmental disorder-99 (MRXS99F) is an X-linked dominant neurodevelopmental disorder characterized by delayed psychomotor development and mild to moderate intellectual disability. Affected females can have a wide range of additional congenital anomalies, including scoliosis, postaxial polydactyly, mild cardiac or urogenital anomalies, dysmorphic facial features, and mild structural brain abnormalities (summary by Reijnders et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/899839">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_902184"><div><strong>Syndromic X-linked intellectual disability 34</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>902184</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225417</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">X-linked syndromic intellectual developmental disorder-34 (MRXS34) is an X-linked recessive neurodevelopmental disorder characterized by delayed psychomotor development, intellectual disability with poor speech, dysmorphic facial features, and mild structural brain abnormalities, including thickening of the corpus callosum (summary by Mircsof et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/902184">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_895979"><div><strong>Intellectual disability, X-linked, syndromic 33</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>895979</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225418</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked syndromic intellectual developmental disorder-33 (MRXS33) is an X-linked recessive neurodevelopmental disorder characterized by delayed psychomotor development, intellectual disability, and characteristic facial features (summary by O'Rawe et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/895979">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_897005"><div><strong>Ritscher-Schinzel syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>897005</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225419</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ritscher-Schinzel syndrome (RSS) is a clinically recognizable condition that includes the cardinal findings of craniofacial features, cerebellar defects, and cardiovascular malformations resulting in the alternate diagnostic name of 3C syndrome. Dysmorphic facial features may include brachycephaly, hypotonic face with protruding tongue, flat appearance of the face on profile view, short midface, widely spaced eyes, downslanted palpebral fissures, low-set ears with overfolding of the upper helix, smooth or short philtrum, and high or cleft palate. Affected individuals also typically have a characteristic metacarpal phalangeal profile showing a consistent wavy pattern on hand radiographs. RSS is associated with variable degrees of developmental delay and intellectual disability. Eye anomalies and hypercholesterolemia may be variably present.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/897005">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_923943"><div><strong>Frontometaphyseal dysplasia 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>923943</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4281559</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">The X-linked otopalatodigital (X-OPD) spectrum disorders, characterized primarily by skeletal dysplasia, include the following: Otopalatodigital syndrome type 1 (OPD1). Otopalatodigital syndrome type 2 (OPD2). Frontometaphyseal dysplasia type 1 (FMD1). Melnick-Needles syndrome (MNS). Terminal osseous dysplasia with pigmentary skin defects (TODPD). In OPD1, most manifestations are present at birth; females can present with severity similar to affected males, although some have only mild manifestations. In OPD2, females are less severely affected than related affected males. Most males with OPD2 die during the first year of life, usually from thoracic hypoplasia resulting in pulmonary insufficiency. Males who live beyond the first year of life are usually developmentally delayed and require respiratory support and assistance with feeding. In FMD1, females are less severely affected than related affected males. Males do not experience a progressive skeletal dysplasia but may have joint contractures and hand and foot malformations. Progressive scoliosis is observed in both affected males and females. In MNS, wide phenotypic variability is observed; some individuals are diagnosed in adulthood, while others require respiratory support and have reduced longevity. MNS in males results in perinatal lethality in all recorded cases. TODPD, seen only in females, is characterized by a skeletal dysplasia that is most prominent in the digits, pigmentary defects of the skin, and recurrent digital fibromata.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/923943">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_924303"><div><strong>Sialidosis type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>924303</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4282398</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Sialidosis is an autosomal recessive disorder characterized by the progressive lysosomal storage of sialylated glycopeptides and oligosaccharides caused by a deficiency of the enzyme neuraminidase. Common to the sialidoses is the accumulation and/or excretion of sialic acid (N-acetylneuraminic acid) covalently linked ('bound') to a variety of oligosaccharides and/or glycoproteins (summary by Lowden and O'Brien, 1979). The sialidoses are distinct from the sialurias in which there is storage and excretion of 'free' sialic acid, rather than 'bound' sialic acid; neuraminidase activity in sialuria is normal or elevated. Salla disease (604369) is a form of 'free' sialic acid disease.&#13; Classification&#13; Lowden and O'Brien (1979) provided a logical nosology of neuraminidase deficiency into sialidosis type I and type II. Type I is the milder form, also known as the 'normosomatic' type or the cherry red spot-myoclonus syndrome. Sialidosis type II is the more severe form with an earlier onset, and is also known as the 'dysmorphic' type. Type II has been subdivided into juvenile and infantile forms. Other terms for sialidosis type II are mucolipidosis I and lipomucopolysaccharidosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/924303">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_924305"><div><strong>Polydactyly, postaxial, type A1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>924305</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4282400</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/924305">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_924419"><div><strong>Intellectual disability, X-linked 61</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>924419</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4283894</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tonne-Kalscheuer syndrome (TOKAS) is an X-linked recessive multiple congenital anomaly disorder with 2 main presentations. Most patients exhibit global developmental delay apparent from early infancy, impaired intellectual development, speech delay, behavioral abnormalities, and abnormal gait. Affected individuals also have dysmorphic facial features that evolve with age, anomalies of the hands, feet, and nails, and urogenital abnormalities with hypogenitalism. A subset of more severely affected males develop congenital diaphragmatic hernia in utero, which may result in perinatal or premature death. Carrier females may have very mild skeletal or hormonal abnormalities (summary by Frints et al., 2019).&#13; Also see Fryns syndrome (229850), an autosomal recessive disorder with overlapping features.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/924419">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_924579"><div><strong>Fanconi anemia complementation group R</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>924579</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4284093</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fanconi anemia (FA) is characterized by physical abnormalities, bone marrow failure, and increased risk for malignancy. Physical abnormalities, present in approximately 75% of affected individuals, include one or more of the following: short stature, abnormal skin pigmentation, skeletal malformations of the upper and/or lower limbs, microcephaly, and ophthalmic and genitourinary tract anomalies. Progressive bone marrow failure with pancytopenia typically presents in the first decade, often initially with thrombocytopenia or leukopenia. The incidence of acute myeloid leukemia is 13% by age 50 years. Solid tumors – particularly of the head and neck, skin, and genitourinary tract – are more common in individuals with FA.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/924579">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_924883"><div><strong>Spastic paraplegia, intellectual disability, nystagmus, and obesity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>924883</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4284592</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia, intellectual disability, nystagmus, and obesity (SINO) is an autosomal dominant neurologic disorder characterized by rapid growth in infancy, global developmental delay, spastic paraplegia, variable ophthalmologic defects, and dysmorphic facial features (summary by Josifova et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/924883">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_930741"><div><strong>X-linked intellectual disability, van Esch type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>930741</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4305072</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Van Esch-O'Driscoll syndrome (VEODS) is characterized by varying degrees of intellectual disability, moderate to severe short stature, microcephaly, hypogonadism, and variable congenital malformations (Van Esch et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/930741">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_930816"><div><strong>Spondyloepiphyseal dysplasia, nishimura type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>930816</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4305147</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The Nishimura type of spondyloepiphyseal dysplasia (SEDN) is characterized by disproportionate short stature with short limbs, small hands and feet, and midface hypoplasia with small nose. Radiologic hallmarks include mild spondylar dysplasia, delayed epiphyseal ossification of the hip and knee, and severe brachydactyly with cone-shaped phalangeal epiphyses (Grigelioniene et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/930816">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_930899"><div><strong>15q14 microdeletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>930899</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4305230</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A recently described syndrome with characteristics of developmental delay, short stature and facial dysmorphism. Dysmorphic features include bi-temporal narrowing, smooth philtrum, pointed chin and dysmorphic ears. All reported patients had a cleft palate, whereas congenital heart defects or epilepsy are observed in patients with large deletions. Deletions are located within chromosome band 15q14, distal to the Prader-Willi/Angelman region. They have a variable size with the smallest deletion being 1.6 Mb in length.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/930899">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934584"><div><strong>Intellectual developmental disorder with dysmorphic facies and ptosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934584</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310617</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder with dysmorphic facies and ptosis (IDDDFP) is an autosomal dominant neurodevelopmental disorder characterized by delayed psychomotor development, intellectual disability, delayed language, and dysmorphic facial features, most notably ptosis/blepharophimosis. Additional features may include poor growth, hypotonia, and seizures (summary by Mattioli et al., 2017).&#13; See also chromosome 3p deletion syndrome (613792).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934584">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934585"><div><strong>Hypotonia, ataxia, and delayed development syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934585</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310618</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">EBF3 neurodevelopmental disorder (EBF3-NDD) is associated with developmental delay (DD) / intellectual disability (ID), speech delay, gait or truncal ataxia, hypotonia, behavioral problems, and facial dysmorphism. Variability between individuals with EBF3-NDD is significant. Although all affected children have DD noted in early infancy, intellect generally ranges from mild to severe ID, with two individuals functioning in the low normal range. Less common issues can include genitourinary abnormalities and gastrointestinal and/or musculoskeletal involvement. To date, 42 symptomatic individuals from 39 families have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934585">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934586"><div><strong>Intellectual disability, autosomal recessive 59</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934586</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310619</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the IMPA1 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934586">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934595"><div><strong>Optic atrophy 11</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934595</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310628</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Optic atrophy-11 (OPA11) is an autosomal recessive disorder characterized by delayed psychomotor development, intellectual disability, ataxia, optic atrophy, and leukoencephalopathy on brain imaging. Laboratory studies are consistent with mitochondrial dysfunction (summary by Hartmann et al., 2016).&#13; For a discussion of genetic heterogeneity of optic atrophy, see OPA1 (165500).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934595">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934599"><div><strong>Epilepsy, early-onset, vitamin B6-dependent</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934599</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310632</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PLPBP deficiency is a treatable form of vitamin B6-dependent early-onset epileptic encephalopathy. Seizure onset is typically in the neonatal period (i.e., within the first 28 days after birth), and rarely in childhood after the neonatal period. Seizures are unresponsive to (or only partly responsive to) anti-seizure medications (ASMs) but typically show an immediate positive response to vitamin B6, given as either pyridoxine (PN) or pyridoxal 5'-phosphate (PLP). This therapy needs to be continued lifelong. In addition to vitamin B6 treatment, almost 60% of individuals require adjunct ASMs to achieve optimal seizure control. Although many individuals with PLPBP deficiency have normal motor, speech, and intellectual development, more than 50% have varying degrees of neurodevelopmental issues, including learning difficulties or intellectual disability (varying from mild to severe), delayed or absent speech development, or motor development abnormalities (most commonly mild hypotonia).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934599">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934608"><div><strong>Intellectual disability, autosomal recessive 58</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934608</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310641</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the ELP2 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934608">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934610"><div><strong>Neurodevelopmental disorder with hypotonia, seizures, and absent language</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934610</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310643</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934610">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934611"><div><strong>Global developmental delay, absent or hypoplastic corpus callosum, and dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934611</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310644</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GDACCF is an intellectual disability syndrome apparent soon after birth with neonatal hypotonia, poor feeding, and respiratory insufficiency followed by delayed psychomotor development and intellectual disability with poor speech. Brain imaging shows aplasia or hypoplasia of the corpus callosum. Affected individuals have variable dysmorphic facial features, and some may have dysplastic, cystic kidneys or mild cardiac defects (summary by Stevens et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934611">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934613"><div><strong>Lissencephaly 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934613</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310646</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Lissencephaly-8 (LIS8) is an autosomal recessive neurologic disorder characterized by delayed psychomotor development, intellectual disability with poor or absent speech, early-onset refractory seizures, and hypotonia. Brain imaging shows variable features, including cortical gyral abnormalities and hypoplasia of the corpus callosum, brainstem, and cerebellum (Jerber et al., 2016).&#13; For a general description and a discussion of genetic heterogeneity lissencephaly, see LIS1 (607432).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934613">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934623"><div><strong>Immunodeficiency 49</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934623</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310656</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any primary immunodeficiency disease in which the cause of the disease is a mutation in the BCL11B gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934623">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934634"><div><strong>Encephalopathy, progressive, with amyotrophy and optic atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934634</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310667</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Progressive encephalopathy with amyotrophy and optic atrophy (PEAMO) is a severe autosomal recessive neurodegenerative disorder characterized by delayed development with hypotonia apparent in infancy and subsequent motor regression. Most affected individuals are unable to or lose the ability to sit and show distal amyotrophy and weakness of all 4 limbs. The patients are cognitively impaired and unable to speak or have severe dysarthria. Additional features include optic atrophy, thin corpus callosum, and cerebellar atrophy (Sferra et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934634">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934636"><div><strong>Periventricular nodular heterotopia 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934636</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310669</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Periventricular nodular heterotopia-7 (PVNH7) is a neurologic disorder characterized by abnormal neuronal migration during brain development resulting in delayed psychomotor development and intellectual disability; some patients develop seizures. Other features include cleft palate and 2-3 toe syndactyly (summary by Broix et al., 2016).&#13; For a phenotypic description and a discussion of genetic heterogeneity of periventricular heterotopia, see 300049.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934636">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934639"><div><strong>Shashi-Pena syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934639</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310672</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Shashi-Pena syndrome is characterized by distinctive facial features accompanied by variable further clinical findings. Facial features may include glabellar nevus simplex, widely spaced and prominent/proptotic eyes with epicanthal folds and ptosis, arched eyebrows, broad nasal tip, and low-set/posteriorly rotated ears. Dental anomalies may include early eruption and loss of teeth as well as small and fragile teeth. Most affected individuals have infantile hypotonia that frequently resolves over time. Macrosomia and macrocephaly are also common. Affected individuals can have variable developmental delay / intellectual disability, ranging from low-average intellectual abilities to severe intellectual disability. They often demonstrate difficulties with attention and aggressive behavior. Affected individuals may have feeding difficulties that require supportive nasogastric or gastrostomy tube feeding, skin findings (capillary malformations, deep palmar creases, hypertrichosis), skeletal anomalies (scoliosis/kyphosis, hypermobility, frequent fractures), congenital heart defects, seizures, hypoglycemia (most typically in infancy, may be due to hyperinsulinism), vision abnormalities (strabismus, amblyopia), conductive hearing loss, sleep apnea, temperature dysregulation, and global volume loss on brain MRI.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934639">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934640"><div><strong>Intellectual disability, autosomal recessive 57</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934640</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310673</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the MBOAT7 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934640">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934644"><div><strong>Harel-Yoon syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934644</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310677</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Harel-Yoon syndrome is a syndromic neurodevelopmental disorder characterized by delayed psychomotor development, intellectual disability, truncal hypotonia, spasticity, and peripheral neuropathy. Other more variable features such as optic atrophy may also occur. Laboratory studies in some patients show evidence of mitochondrial dysfunction (summary by Harel et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934644">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934645"><div><strong>Language delay and attention deficit-hyperactivity disorder/cognitive impairment with or without cardiac arrhythmia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934645</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310678</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GNB5-related neurodevelopmental disorder (GNB5-NDD) is characterized by a spectrum of neurodevelopmental phenotypes that range from severe-to-profound intellectual disability (ID; 31/41 reported individuals), to mild-to-moderate ID (5/41), to normal intellect with severe language disorder (5/41, one extended family). A unique and specific feature of GNB5-NDD – regardless of neurodevelopmental phenotype – is nearly universal bradycardia caused by sinoatrial node dysfunction (sick sinus syndrome). Most individuals with severe and profound ID have a developmental and epileptic encephalopathy with focal seizures or epileptic spasms, as well as visual impairment (central or retinal) with nystagmus, difficulty feeding, and gastroesophageal reflux disease. The risk of early mortality is increased.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934645">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934650"><div><strong>Intellectual disability-epilepsy-extrapyramidal syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934650</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310683</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia and impaired expressive language and with or without seizures (NEDHELS) is an autosomal recessive disorder characterized by hypotonia, poor feeding, and global developmental delay apparent from infancy. Most patients have poor overall growth, poor eye contact, sleep disturbances, and severely impaired expressive language. Affected individuals also tend to have behavioral problems, microcephaly, and variable dysmorphic features; many develop seizures. Brain imaging may show enlarged ventricles, thin corpus callosum and brainstem, and white matter abnormalities. The phenotype is variable (summary by Nabais Sa et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934650">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934651"><div><strong>Intellectual developmental disorder, autosomal recessive 74</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934651</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310684</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MRT74 is characterized by intellectual impairment, macrocephaly, and dysmorphic features. Epilepsy with eyelid myoclonus has also been reported (Almuriekhi et al., 2015; Mastrangelo et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934651">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934653"><div><strong>Short stature, rhizomelic, with microcephaly, micrognathia, and developmental delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934653</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310686</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The core features of short stature-micrognathia syndrome (SSMG) are intrauterine growth restriction (IUGR), postnatal short stature that is often rhizomelic, and micrognathia. Other common features include preterm birth, microcephaly, developmental delay, and genitourinary malformations in males. Transient liver dysfunction and glycosylation abnormalities during illness, giant cell hepatitis, hepatoblastoma, and cataracts have also been observed. Inter- and intrafamilial phenotypic severity varies greatly, from a relatively mild disorder to intrauterine death or stillbirth (Ritter et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934653">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934655"><div><strong>Sifrim-Hitz-Weiss syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934655</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310688</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CHD4 neurodevelopmental disorder (CHD4-NDD) is associated with developmental delay, speech delay, and usually mild-to-moderate intellectual disability. Variability between individuals with CHD4-NDD is significant, and a few have normal intelligence. Other manifestations can include brain anomalies, heart defects, and skeletal abnormalities; less common features are hypogonadism in males, hearing impairment, and ophthalmic abnormalities. Most affected individuals have mild nonspecific dysmorphic facial features with or without macrocephaly.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934655">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934656"><div><strong>Short stature-brachydactyly-obesity-global developmental delay syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934656</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310689</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic, multiple congenital anomalies syndrome characterized by short stature, hand brachydactyly with hypoplastic distal phalanges, global development delay, intellectual disability, and more variably seizures, obesity, and craniofacial dysmorphism that includes microcephaly, high forehead, flat face, hypertelorism, deep set eyes, flat nasal bridge, averted nostrils, long philtrum, thin lip vermilion, and short neck.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934656">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934661"><div><strong>Congenital myasthenic syndrome 20</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934661</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310694</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital myasthenic syndrome-20 is an autosomal recessive neuromuscular disorder characterized by severe hypotonia associated with episodic apnea soon after birth. Patients have muscle weakness resulting in delayed walking, ptosis, poor sucking and swallowing, and generalized limb fatigability and weakness. EMG studies usually show a decremental response to repetitive nerve stimulation, and some patients may show a good response to AChE inhibitors (summary by Bauche et al., 2016).&#13; For a discussion of genetic heterogeneity of CMS, see CMS1A (601462).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934661">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934663"><div><strong>ZTTK syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934663</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310696</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ZTTK syndrome (ZTTKS) is a severe multisystem developmental disorder characterized by delayed psychomotor development and intellectual disability. Affected individuals have characteristic dysmorphic facial features, hypotonia, poor feeding, poor overall growth, and eye or visual abnormalities. Most patients also have musculoskeletal abnormalities, and some have congenital defects of the heart and urogenital system. Brain imaging usually shows developmental abnormalities such as gyral changes, cortical and/or cerebellar atrophy, and thin corpus callosum (summary by Kim et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934663">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934669"><div><strong>Alazami-Yuan syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934669</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310702</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934669">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934670"><div><strong>Intellectual disability, autosomal recessive 56</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934670</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310703</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive non-syndromic intellectual disability in which the cause of the disease is a mutation in the ZC3H14 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934670">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934672"><div><strong>Joubert syndrome 28</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934672</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310705</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934672">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934673"><div><strong>Joubert syndrome 27</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934673</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310706</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934673">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934679"><div><strong>Developmental and epileptic encephalopathy, 43</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934679</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310712</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-43 (DEE43) is a neurologic disorder characterized by the onset of various types of seizures usually in the first year of life. The age at onset is highly variable, ranging from the neonatal period to about 12 months of age. Later onset may rarely occur. Seizure types include febrile, infantile spasms, focal, tonic-clonic, and myoclonic; they tend to be refractory to treatment. Affected individuals show global developmental delay with mild to moderate intellectual disability, although some may have normal early development before the onset of seizures. EEG shows focal, multifocal, or generalized sharp waves associated with seizures, sometimes with hypsarrhythmia. Additional more variable features include tube feeding, hypotonia, peripheral hypertonia, ataxia, dyskinesia, and behavioral difficulties, including aggression, ADHD, stereotypic, and impulsive behavior (summary by the Epi4K Consortium, 2016).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934679">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934683"><div><strong>Developmental and epileptic encephalopathy, 42</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934683</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310716</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-42 (DEE42) is a neurologic disorder characterized by the onset of various types of seizures in the first hours or days of life, although rare patients may have onset in the first weeks of life. The seizures tend to be refractory and associated with EEG abnormalities, including multifocal spikes and generalized spike-wave complexes. Affected infants show global developmental delay with severely impaired intellectual development. Other features may include axial hypotonia, peripheral hypertonia with hyperreflexia, tremor, ataxia, and abnormal eye movements (summary by the Epi4K Consortium, 2016).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934683">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934687"><div><strong>Growth retardation, intellectual developmental disorder, hypotonia, and hepatopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934687</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310720</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GRIDHH is an autosomal recessive multisystem disorder characterized by poor overall growth, impaired intellectual development, hypotonia, and variable liver dysfunction. Additional features, such as seizures and hearing loss, may also be present (summary by Kopajtich et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934687">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934690"><div><strong>Microcephaly 17, primary, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934690</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310723</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive primary microcephaly-17 (MCPH17) is a severe neurologic disorder characterized by very small head circumference that is apparent at birth and worsens over time (up to -12 SD). Affected individuals have delayed psychomotor development, intellectual disability, spasticity, axial hypotonia, and dysmorphic features. Brain imaging shows a simplified gyral pattern; more severe cases have lissencephaly with hypoplasia of the brainstem and cerebellum (summary by Harding et al., 2016).&#13; For a phenotypic description and a discussion of genetic heterogeneity of primary microcephaly, see MCPH1 (251200).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934690">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934706"><div><strong>Okur-Chung neurodevelopmental syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934706</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310739</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Individuals with Okur-Chung neurodevelopmental syndrome (OCNDS) frequently have nonspecific clinical features, delayed language development, motor delay, intellectual disability (typically in the mild-to-moderate range), generalized hypotonia starting in infancy, difficulty feeding, and nonspecific dysmorphic facial features. Developmental delay affects all areas of development, but language is more impaired than gross motor skills in most individuals. Intellectual disability has been reported in about three quarters of individuals. Less common findings may include kyphoscoliosis, postnatal short stature, disrupted circadian rhythm leading to sleep disturbance, seizures, and poor coordination.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934706">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934707"><div><strong>Micrognathia-recurrent infections-behavioral abnormalities-mild intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934707</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310740</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">TRIO-related neurodevelopmental disorder (TRIO-NDD) is characterized by two phenotypes: TRIO-NDD due to gain-of-function variants and TRIO-NDD due to loss-of-function variants. TRIO-NDD due to gain-of-function variants within the spectrin repeat domain is characterized by moderate-to-severe developmental delay, intellectual disability, macrocephaly (or relative macrocephaly), neurobehavioral manifestations (poor attention, stereotypies, obsessive-compulsive behavior, aggressive behavior, and autism spectrum disorder), and early feeding difficulties with poor weight gain and growth deficiency. Seizures, constipation, scoliosis, dental abnormalities, and cardiac anomalies are also reported. TRIO-NDD due to loss-of-function variants is characterized by mild-to-moderate developmental delay and intellectual disability, microcephaly, neurobehavioral manifestations (poor attention, aggressive behavior, autism spectrum disorder, obsessive-compulsive traits, and stereotypies), early feeding difficulties with poor weight gain, dental abnormalities, and digit anomalies, including 2-3 toe syndactyly in some individuals. Seizures, constipation, scoliosis, and cardiac anomalies are also reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934707">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934709"><div><strong>PERCHING syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934709</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310742</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PERCHING syndrome is an autosomal recessive multisystem disorder characterized by global developmental delay, dysmorphic facial features, feeding and respiratory difficulties with poor overall growth, axial hypotonia, and joint contractures. The features are variable, even within families, and may also include retinitis pigmentosa, cardiac or genitourinary anomalies, and abnormal sweating. Each letter of the PERCHING acronym represents 2 important phenotypic elements: Postural and Palatal abnormalities; Exophthalmos and Enteral-tube dependency/feeding issues; Respiratory distress and Retinitis pigmentosa; Contractures and Camptodactyly; Hypertelorism and Hirsutism; Intrauterine growth retardation (IUGR)/growth failure and Intellectual disability/developmental delay; Nevus flammeus and Neurologic malformations; and facial Gestalt/grimacing and Genitourinary abnormalities (Jeffries et al., 2019). Death in infancy or early childhood often occurs, although survival to the third decade has been reported. Some of the features, such as contractures, dysmorphic craniofacial features, and severe feeding difficulties, are reminiscent of Bohring-Opitz syndrome (605039) (summary by Kanthi et al., 2019 and Buers et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934709">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934722"><div><strong>Intellectual disability, autosomal recessive 54</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934722</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310755</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MRT54 is an autosomal recessive disorder characterized by nonsyndromic impaired intellectual development (Anazi et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934722">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934724"><div><strong>Pontocerebellar hypoplasia, type 2F</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934724</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310757</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pontocerebellar hypoplasia type 2F (PCH2F) is an autosomal recessive neurodevelopmental disorder characterized by progressive microcephaly and variable neurologic signs and symptoms, including cognitive and motor delay, poor or absent speech, seizures, and spasticity (summary by Breuss et al., 2016).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of pontocerebellar hypoplasia type 2, see PCH2A (277470).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934724">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934732"><div><strong>Hypermanganesemia with dystonia 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934732</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310765</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SLC39A14 deficiency is typically characterized by evidence of delay or loss of motor developmental milestones (e.g., delayed walking, gait disturbance) between ages six months and three years. Early in the disease course, children show axial hypotonia followed by dystonia, spasticity, dysarthria, bulbar dysfunction, and signs of parkinsonism including bradykinesia, hypomimia, and tremor. By the end of the first decade, they develop severe, generalized, pharmaco-resistant dystonia, limb contractures, and scoliosis, and lose independent ambulation. Cognitive impairment appears to be less prominent than motor disability. Some affected children have died in their first decade due to secondary complications such as respiratory infections. One individual with disease onset during the late teens has been reported, suggesting that milder adult presentation can occur.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934732">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934733"><div><strong>Macrocephaly, dysmorphic facies, and psychomotor retardation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934733</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310766</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Macrocephaly, dysmorphic facies, and psychomotor retardation (MDFPMR) is an autosomal recessive neurodevelopmental disorder characterized by large head and somatic overgrowth apparent at birth followed by global developmental delay. Affected individuals have characteristic dysmorphic facial features and persistently large head, but increased birth weight normalizes with age. Additional neurologic features, including seizures, hypotonia, and gait ataxia, may also occur. Patients show severe intellectual impairment (summary by Ortega-Recalde et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934733">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934738"><div><strong>Intellectual disability, autosomal dominant 43</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934738</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310771</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">HIVEP2-related intellectual disability is a neurological disorder characterized by moderate to severe developmental delay and intellectual disability and mild physical abnormalities (dysmorphic features). Early symptoms of the condition include weak muscle tone (hypotonia) and delayed development of motor skills, such as sitting, standing, and walking. After learning to walk, many affected individuals continue to have difficulty with this activity; their walking style (gait) is often unbalanced and wide-based. Speech is also delayed, and some people with this condition never learn to talk. Most people with HIVEP2-related intellectual disability also have unusual physical features, such as widely spaced eyes (hypertelorism), a broad nasal bridge, or fingers with tapered ends, although there is no characteristic pattern of such features among affected individuals. Many people with the condition exhibit neurodevelopmental disorders, such as hyperactivity, attention deficit disorder, aggression, anxiety, and autism spectrum disorder, which is a group of developmental disorders characterized by impaired communication and social interaction.\n\nOther features of HIVEP2-related intellectual disability include mild abnormalities in the structure of the brain and an abnormally small brain and head size (microcephaly). Less common health problems include seizures; recurrent ear infections; and eye disorders, such as eyes that do not look in the same direction (strabismus), "lazy eye" (amblyopia), and farsightedness (hyperopia). Some people with HIVEP2-related intellectual disability have gastrointestinal problems, which can include backflow of acidic stomach contents into the esophagus (gastroesophageal reflux) and constipation.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934738">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934741"><div><strong>Intellectual disability, autosomal dominant 42</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934741</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310774</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">GNB1 encephalopathy (GNB1-E) is characterized by moderate-to-severe developmental delay / intellectual disability, structural brain abnormalities, and often infantile hypotonia and seizures. Other less common findings include dystonia, reduced vision, behavior issues, growth delay, gastrointestinal (GI) problems, genitourinary (GU) abnormalities in males, and cutaneous mastocytosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934741">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934745"><div><strong>TELO2-related intellectual disability-neurodevelopmental disorder</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934745</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310778</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">You-Hoover-Fong syndrome (YHFS) is an autosomal recessive disorder with clinical features of global developmental delay, impaired intellectual development, dysmorphic facial features, microcephaly, abnormal movements, and abnormal auditory and visual function (You et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934745">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934748"><div><strong>Spinocerebellar ataxia, autosomal recessive 22</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934748</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310781</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal recessive cerebellar ataxia in which the cause of the disease is a mutation in the VWA3B gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934748">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934751"><div><strong>Intellectual disability, autosomal dominant 41</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934751</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310784</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any autosomal dominant non-syndromic intellectual disability in which the cause of the disease is a mutation in the TBL1XR1 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934751">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934754"><div><strong>Chorea, childhood-onset, with psychomotor retardation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934754</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310787</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934754">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934755"><div><strong>Coffin-Siris syndrome 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934755</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310788</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Coffin-Siris syndrome is a rare congenital disorder characterized by delayed psychomotor development, intellectual disability, coarse facial features, and hypoplasia of the distal phalanges, particularly the fifth digit. Other features may also be observed, including congenital heart defects, hypoplasia of the corpus callosum, and poor overall growth with short stature and microcephaly (summary by Wieczorek et al., 2013). Patients with SMARCE1 mutations have a wide spectrum of manifestations, including severe to moderate intellectual disability and heart defects (summary by Kosho et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Coffin-Siris syndrome, see CSS1 (135900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934755">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934758"><div><strong>Striatal degeneration, autosomal dominant 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934758</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310791</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant striatal degeneration-2 is a neurologic disorder characterized by hyperkinetic movements, mainly chorea, resulting from dysfunction of the basal ganglia. Although symptoms appear in the first decade, the disorder is not progressive (summary by Mencacci et al., 2016).&#13; For a discussion of genetic heterogeneity of ADSD, see ADSD1 (609161).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934758">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934765"><div><strong>Immunodeficiency-centromeric instability-facial anomalies syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934765</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310798</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Immunodeficiency-centromeric instability-facial anomalies syndrome-4 is an autosomal recessive disorder characterized by recurrent infections in childhood and variable dysmorphic facial features. Laboratory studies show hypomethylation of certain chromosomal regions. Additional features, including delayed development, are variable (summary by Thijssen et al., 2015).&#13; For a discussion of genetic heterogeneity of immunodeficiency-centromeric instability-facial anomalies syndrome, see ICF1 (242860).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934765">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934766"><div><strong>Immunodeficiency-centromeric instability-facial anomalies syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934766</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310799</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Immunodeficiency-centromeric instability-facial anomalies syndrome-3 is an autosomal recessive disorder characterized by recurrent infections in childhood and variable dysmorphic facial features. Laboratory studies show hypomethylation of certain chromosomal regions. Additional features, including delayed development, are variable (summary by Thijssen et al., 2015).&#13; For a discussion of genetic heterogeneity of immunodeficiency-centromeric instability-facial anomalies syndrome, see ICF1 (242860).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934766">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934768"><div><strong>Developmental delay with short stature, dysmorphic facial features, and sparse hair</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934768</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310801</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic multiple congenital anomalies/dysmorphic syndrome with characteristics of craniofacial dysmorphism (including an abnormal skull shape, hypertelorism, downslanting palpebral fissures, epicanthal folds, low-set ears, depressed nasal bridge, micrognathia), short stature, ectodermal anomalies (such as sparse eyebrows, eyelashes, and scalp hair, hypoplastic toenails), developmental delay, and intellectual disability. Additional features may include cerebral/cerebellar malformations and mild renal involvement.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934768">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934771"><div><strong>SIN3A-related intellectual disability syndrome due to a point mutation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934771</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310804</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Witteveen-Kolk syndrome (WITKOS) is an autosomal dominant disorder with characteristic distinctive facial features, microcephaly, short stature, and mildly impaired intellectual development with delayed cognitive and motor development and subtle anomalies on MRI-brain imaging (summary by Balasubramanian et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934771">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934772"><div><strong>Bartter disease type 4B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934772</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310805</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bartter syndrome refers to a group of disorders that are unified by autosomal recessive transmission of impaired salt reabsorption in the thick ascending loop of Henle with pronounced salt wasting, hypokalemic metabolic alkalosis, and hypercalciuria. Clinical disease results from defective renal reabsorption of sodium chloride in the thick ascending limb (TAL) of the Henle loop, where 30% of filtered salt is normally reabsorbed (Simon et al., 1997).&#13; Patients with antenatal (or neonatal) forms of Bartter syndrome (e.g., BARTS1, 601678) typically present with premature birth associated with polyhydramnios and low birth weight and may develop life-threatening dehydration in the neonatal period. Patients with classic Bartter syndrome present later in life and may be sporadically asymptomatic or mildly symptomatic (summary by Simon et al., 1996 and Fremont and Chan, 2012).&#13; For a discussion of genetic heterogeneity of Bartter syndrome, see 607364.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934772">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934777"><div><strong>Midface hypoplasia, hearing impairment, elliptocytosis, and nephrocalcinosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934777</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310810</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Midface hypoplasia, hearing impairment, elliptocytosis, and nephrocalcinosis is an X-linked recessive disorder with onset of features in early childhood. Anemia is sometimes present. Some patients may show mild early motor or speech delay, but cognition is normal (summary by Andreoletti et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934777">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934781"><div><strong>Intellectual disability, X-linked, syndromic, Bain type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934781</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310814</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Most individuals with HNRNPH2-related neurodevelopmental disorder (HNRNPH2-NDD) have symptoms early in life, before age 12 months. The major features of HNRNPH2-NDD are developmental delay / intellectual disability, motor and language delays, behavioral and psychiatric disorders, and growth and musculoskeletal abnormalities. Minor features include dysmorphic facies, gastrointestinal disturbances, epilepsy, and visual defects. Although HNRNPH2-NDD is an X-linked condition, there is not enough information on affected females versus affected males to make any generalizations about phenotypic differences between the two sexes.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934781">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934783"><div><strong>Intellectual disability, X-linked 105</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934783</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310816</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked intellectual developmental disorder-105 (XLID105) is characterized by different combinations of impaired intellectual development, developmental delay, autism spectrum disorder, ADHD, and anxiety. Some patients have ophthalmologic abnormalities (summary by Koch et al., 2024).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934783">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934784"><div><strong>Intellectual disability, X-linked 104</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934784</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310817</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the FRMPD4 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934784">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934785"><div><strong>Intellectual disability, X-linked 103</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934785</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310818</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any non-syndromic X-linked intellectual disability in which the cause of the disease is a mutation in the KLHL15 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934785">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934800"><div><strong>Dias-Logan syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934800</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4310833</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">BCL11A-related intellectual disability (BCL11A-ID) is characterized by developmental delay / intellectual disability of variable degree, neonatal hypotonia, microcephaly, distinctive but variable facial characteristics, behavior problems, and asymptomatic persistence of fetal hemoglobin. Growth delay, seizures, and autism spectrum disorder have also been reported in some affected individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934800">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_935013"><div><strong>Chromosome 19q13.11 deletion syndrome, proximal</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>935013</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4311046</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Proximal chromosome 19q13.11 deletion syndrome is an autosomal dominant neurodevelopmental disorder characterized by delayed development, intellectual disability with poor speech, feeding difficulties, and autistic features. Some patients may have additional features, including renal tract anomalies (summary by Caubit et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/935013">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_935014"><div><strong>Chromosome 11p13 deletion syndrome, distal</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>935014</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4311047</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/935014">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_935015"><div><strong>Chromosome 19q13.11 deletion syndrome, distal</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>935015</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4311048</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Distal chromosome 19q13.11 deletion syndrome is an autosomal dominant neurodevelopmental disorder characterized by poor overall growth, slender habitus, microcephaly, delayed development, intellectual disability with poor or absent speech, and feeding difficulties. Additional features include dysmorphic facies, signs of ectodermal dysplasia, hand and foot anomalies, and genitourinary anomalies, particularly in males (summary by Chowdhury et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/935015">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_935016"><div><strong>Xq25 microduplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>935016</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4311049</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Xq25 duplication syndrome is an X-linked neurodevelopmental disorder characterized by delayed development and intellectual disability associated with abnormal behavior and dysmorphic facial features. Additional variable features may include thin corpus callosum on brain imaging and sleep disturbances. Carrier females may be mildly affected (summary by Leroy et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/935016">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1373312"><div><strong>Autosomal dominant Kenny-Caffey syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1373312</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4316787</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">FAM111A-related skeletal dysplasias include the milder phenotype of Kenny-Caffey syndrome (KCS) and a more severe lethal phenotype, osteocraniostenosis (OCS). KCS is characterized by proportionate short stature (typically postnatal onset), relative macrocephaly, large anterior fontanel with delayed closure, characteristic facial features, cortical thickening of the long bones with stenosis of the medullary cavity, and ophthalmologic and dental manifestations. OCS is characterized by intrauterine growth deficiency, microcephaly, characteristic facial features, decreased skull ossification, slender long bones with cortical thickening, stenosis of the medullary cavity of the long bones, flared metaphyses, and thin ribs with thoracic and pulmonary hypoplasia leading to respiratory insufficiency. Perinatal fractures may occur. Primary hypoparathyroidism with hypocalcemia and hyperphosphatemia can occur in individuals with KCS and OCS.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1373312">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1392124"><div><strong>SRD5A3-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1392124</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4317224</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SRD5A3-congenital disorder of glycosylation (SRD5A3-CDG, formerly known as congenital disorder of glycosylation type Iq) is an inherited condition that causes neurological and vision problems and other signs and symptoms. The pattern and severity of this condition's features vary widely among affected individuals.\n\nIndividuals with SRD5A3-CDG typically develop signs and symptoms of the condition during infancy or early childhood. Most individuals with SRD5A3-CDG have intellectual disability, vision problems, unusual facial features,low muscle tone (hypotonia), and problems with coordination and balance (ataxia). \n\nVision problems in SRD5A3-CDG often include involuntary side-side movements of the eyes (nystagmus), a gap or hole in one of the structures of the eye (coloboma), underdevelopment of the nerves that carry signals between the eyes and the brain(optic nerve hypoplasia), or vision loss early in life (early-onset severe retinal dystrophy). Over time, affected individuals may develop clouding of the lenses of the eyes (cataracts) or increased pressure in the eyes (glaucoma).\n\nOther features of SRD5A3-CDG can include skin rash, unusually small red blood cells (microcytic anemia),and liver problems.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1392124">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1389156"><div><strong>Intellectual disability, X-linked 106</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1389156</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4478379</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1389156">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1392054"><div><strong>Intellectual disability, X-linked, syndromic, 35</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1392054</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4478383</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1392054">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1379805"><div><strong>Noonan syndrome-like disorder with loose anagen hair 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1379805</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4478716</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Noonan syndrome-like disorder with loose anagen hair is characterized by facial features similar to those observed in Noonan syndrome (163950), including hypertelorism, ptosis, downslanting palpebral fissures, low-set posteriorly angulated ears, and overfolded pinnae. In addition, patients display short stature, frequently with growth hormone (GH; see 139250) deficiency; cognitive deficits; relative macrocephaly; small posterior fossa resulting in Chiari I malformation; hypernasal voice; cardiac defects, especially dysplasia of the mitral valve and septal defects; and ectodermal abnormalities, in which the most characteristic feature is the hair anomaly, including easily pluckable, sparse, thin, slow-growing hair (summary by Bertola et al., 2017).&#13; Reviews&#13; Komatsuzaki et al. (2010) reviewed the clinical manifestations of patients with Noonan syndrome, Costello syndrome (218040), and cardiofaciocutaneous syndrome (CFC; see 115150) compared to patients with mutations in the SHOC2 gene. They noted that although there is phenotypic overlap among the disorders, loose anagen/easily pluckable hair had not been reported in mutation-positive patients with Noonan, CFC, or Costello syndrome, and appeared to be a distinctive feature of SHOC2 mutation-positive patients.&#13; Genetic Heterogeneity of Noonan Syndrome-Like Disorder with Loose Anagen Hair&#13; NSLH2 (617506) is caused by mutation in the PPP1CB gene (600590) on chromosome 2p23.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1379805">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1392440"><div><strong>Brain malformations with or without urinary tract defects</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1392440</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4478940</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">For the purposes of this chapter, NFIA-related disorder is defined as heterozygous inactivation or disruption of only NFIA without involvement of adjacent or surrounding genes. NFIA-related disorder comprises central nervous system abnormalities (most commonly abnormalities of the corpus callosum) with or without urinary tract defects, such as unilateral or bilateral vesicoureteral reflux and hydronephrosis. Additional features include macrocephaly, seizures, developmental delay and/or cognitive impairment, nonspecific dysmorphic features, ventriculomegaly, and hypotonia, which can exacerbate motor delay and feeding issues in infancy. Rarer features may include strabismus, cutis marmorata, or craniosynostosis of the metopic, lambdoid, or sagittal suture.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1392440">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1385307"><div><strong>Congenital heart defects, dysmorphic facial features, and intellectual developmental disorder</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1385307</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479246</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CDK13-related disorder, reported in 43 individuals to date, is characterized in all individuals by developmental delay / intellectual disability (DD/ID); nearly all individuals older than age one year display impaired verbal language skills (either absent or restricted speech). Other common findings are recognizable facial features in some individuals, behavioral problems (autism spectrum disorder or autistic traits/stereotypies, attention-deficit/hyperactivity disorder), feeding difficulties in infancy, structural cardiac defects, and seizures.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1385307">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1392637"><div><strong>Developmental and epileptic encephalopathy, 54</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1392637</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479319</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">HNRNPU-related neurodevelopmental disorder (HNRNPU-NDD) is characterized by developmental delay and intellectual disability – typically moderate to severe – with speech and language delay and/or absent speech. Affected individuals may also display autistic features. There may be feeding difficulties during the neonatal period as well as hypotonia, which often remains lifelong. Dysmorphic features have been described but they are nonspecific. Affected individuals are likely to experience seizures (most commonly tonic-clonic or absence) that may be refractory to treatment. Nonspecific brain MRI findings include ventriculomegaly and thinning of the corpus callosum. Less common findings include cardiac abnormalities, strabismus, undescended testes in males, renal anomalies, and skeletal features, including joint laxity, polydactyly, and scoliosis. Rarely, abnormal breathing patterns, including hyperventilation and apnea, may be present and can lead to sleep disturbance.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1392637">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1377894"><div><strong>Neurodevelopmental disorder with epilepsy, cataracts, feeding difficulties, and delayed brain myelination</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1377894</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479333</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with epilepsy, cataracts, feeding difficulties, and delayed brain myelination is a syndromic form of severe to profound intellectual disability with onset of delayed psychomotor development and seizures in infancy. Affected children have hypotonia, feeding difficulties resulting in failure to thrive, and inability to speak or walk, and they tend to show repetitive stereotypic behaviors. Brain imaging shows cerebral atrophy and delayed myelination (summary by Schoch et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1377894">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1382291"><div><strong>Congenital muscular dystrophy with cataracts and intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1382291</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479410</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MDCCAID is an autosomal recessive form of muscular dystrophy with onset of progressive muscle weakness in early childhood. Almost all patients also have early-onset cataracts, most have impaired intellectual development of varying severity, and some have seizures (summary by Wiessner et al., 2017 and Osborn et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1382291">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1381460"><div><strong>Immunoskeletal dysplasia with neurodevelopmental abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1381460</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479452</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1381460">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1385744"><div><strong>Intellectual developmental disorder with gastrointestinal difficulties and high pain threshold</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1385744</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479517</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Jansen-de Vries syndrome (JDVS) is an autosomal dominant neurodevelopmental disorder characterized by delayed psychomotor development, intellectual disability with speech delay, and behavioral abnormalities. Most patients have variable additional features, including feeding and gastrointestinal difficulties, high pain threshold and/or hypersensitivity to sound, and dysmorphic features, including mild facial abnormalities, strabismus, and small hands and feet (summary by Jansen et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1385744">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1375936"><div><strong>Stankiewicz-Isidor syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1375936</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479599</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Stankiewicz-Isidor syndrome (STISS) is a neurodevelopmental disorder characterized by delayed psychomotor development, intellectual disability, behavioral disorders, mild craniofacial anomalies, and variable congenital defects of the cardiac and/or urogenital systems (summary by Kury et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1375936">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1391110"><div><strong>Microcephaly 18, primary, autosomal dominant</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1391110</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479608</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1391110">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1385580"><div><strong>Neurodevelopmental disorder with midbrain and hindbrain malformations</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1385580</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479613</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with midbrain and hindbrain malformations (NEDMHM) is an autosomal recessive disorder comprising impaired intellectual development, speech delay, mild microcephaly, and midbrain-hindbrain malformation (Ravindran et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1385580">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1388282"><div><strong>Rahman syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1388282</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479637</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The name HIST1H1E syndrome has been proposed as a mnemonic for the characteristic features of this emerging, recognizable phenotype: hypotonia; intellectual disability with behavioral issues; skeletal; testes (undescended) and thyroid; heart anomalies (most commonly atrial septal defect); and ectodermal issues (including sparse hair, thin nails, and abnormal dentition). In the 47 affected individuals reported to date, predominant findings were intellectual disability (ranging from mild to profound) and behavioral issues (combinations of anxiety/phobias, obsessive behaviors, attention-deficit/hyperactivity disorder, and autistic spectrum disorder/traits among others). Skeletal involvement can include scoliosis and decreased bone mineral density. Other findings in some include seizures, craniosynostosis, and hearing loss. Life expectancy does not appear to be reduced in HIST1H1E syndrome.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1388282">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1393733"><div><strong>Gaze palsy, familial horizontal, with progressive scoliosis, 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1393733</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479640</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1393733">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1375401"><div><strong>Gabriele de Vries syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1375401</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479652</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Gabriele-de Vries syndrome is characterized by mild-to-profound developmental delay / intellectual disability (DD/ID) in all affected individuals and a wide spectrum of functional and morphologic abnormalities. Intrauterine growth restriction or low birth weight and feeding difficulties are common. Congenital brain, eye, heart, kidney, genital, and/or skeletal system anomalies have also been reported. About half of affected individuals have neurologic manifestations, including hypotonia and gait abnormalities. Behavioral issues can include attention-deficit/hyperactivity disorder, anxiety, autism or autistic behavior, and schizoaffective disorder.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1375401">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1386939"><div><strong>Cohen-Gibson syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1386939</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4479654</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">EED-related overgrowth is characterized by fetal or early childhood overgrowth (tall stature, macrocephaly, large hands and feet, and advanced bone age) and intellectual disability that ranges from mild to severe. To date, EED-related overgrowth has been reported in eight individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1386939">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1386785"><div><strong>Autosomal recessive limb-girdle muscular dystrophy type 2P</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1386785</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4511963</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MDDGC9 is an autosomal recessive muscular dystrophy showing onset in early childhood. It is part of a group of similar disorders resulting from defective glycosylation of DAG1, collectively known as 'dystroglycanopathies' (summary by Hara et al., 2011).&#13; For a discussion of genetic heterogeneity of muscular dystrophy-dystroglycanopathy type C, see MDDGC1 (609308).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1386785">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1387791"><div><strong>Neurodegeneration with brain iron accumulation 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1387791</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4517377</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodegeneration with brain iron accumulation refers to a group of neurodegenerative disorders characterized by progressive motor and cognitive dysfunction beginning in childhood or young adulthood. Patients show extrapyramidal motor signs, such as spasticity, dystonia, and parkinsonism. Brain imaging shows iron accumulation in the basal ganglia (summary by Dusi et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of NBIA, see NBIA1 (234200).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1387791">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1385598"><div><strong>Autosomal recessive limb-girdle muscular dystrophy type R18</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1385598</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4517996</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive limb-girdle muscular dystrophy-18 (LGMDR18) is characterized by childhood-onset of proximal muscle weakness resulting in gait abnormalities and scapular winging. Serum creatine kinase is increased. A subset of patients may show a hyperkinetic movement disorder with chorea, ataxia, or dystonia and global developmental delay (summary by Bogershausen et al., 2013). Additional more variable features include alacrima, achalasia, cataracts, or hepatic steatosis (Liang et al., 2015; Koehler et al., 2017).&#13; For a discussion of genetic heterogeneity of autosomal recessive limb-girdle muscular dystrophy, see LGMDR1 (253600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1385598">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1625619"><div><strong>Galloway-Mowat syndrome 2, X-linked</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1625619</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4538784</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Galloway-Mowat syndrome is a renal-neurologic disease characterized by early-onset nephrotic syndrome associated with microcephaly, gyral abnormalities of the brain, and delayed psychomotor development. Most patients have dysmorphic facial features, often including hypertelorism, ear abnormalities, and micrognathia. Other features, such as arachnodactyly and visual impairment, are more variable. Most patients die in the first years of life (summary by Braun et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of GAMOS, see GAMOS1 (251300).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1625619">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1627793"><div><strong>Meckel syndrome 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1627793</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4539714</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1627793">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1616472"><div><strong>Intellectual disability, autosomal dominant 45</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1616472</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4539848</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1616472">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1618560"><div><strong>Intellectual disability, autosomal dominant 46</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1618560</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4539851</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1618560">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1627555"><div><strong>Skraban-Deardorff syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1627555</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4539927</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">WDR26-related intellectual disability (ID) is characterized by developmental delay / intellectual disability, characteristic facial features, hypotonia, epilepsy, and infant feeding difficulties. To date 15 individuals, ages 24 months to 34 years, have been reported. Developmental delay is present in all individuals and ranges from mild to severe. All individuals have delayed speech. Although some begin to develop speech in the second year, others have remained nonverbal. Seizures, present in all affected individuals reported to date, can be febrile or non-febrile (tonic-clonic, absence, rolandic seizures); most seizures are self limited or respond well to standard treatment. Affected individuals are generally described as happy and socially engaging; several have stereotypies / autistic features (repetitive or rocking behavior, abnormal hand movements or posturing, and at times self-stimulation).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1627555">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1613861"><div><strong>Joubert syndrome 30</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1613861</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4539937</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1613861">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1622196"><div><strong>Intellectual disability, autosomal dominant 47</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1622196</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4539951</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by global developmental delay, variable degrees of intellectual disability, and facial dysmorphism (including high nasal bridge, deep-set eyes, and wide mouth), often associated with feeding difficulties and/or gastroesophageal reflux. Additional reported manifestations are seizures, hypotonia, autistic features, and joint laxity. Brain imaging may show non-specific features (such as cerebral atrophy).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1622196">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1621146"><div><strong>Vertebral, cardiac, renal, and limb defects syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1621146</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540004</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital NAD deficiency disorder (CNDD) is a multisystem condition in which cardiac, renal, vertebral, and limb anomalies are common, mimicking the clinical features described in VACTERL association. Congenital heart defects can include left-sided heart lesions, right-sided heart lesions, or both. Almost all surviving individuals have short stature, many with disproportionately shortened limbs. Vertebral anomalies, including hemivertebrae and vertebral fusion, occur frequently, often with rib anomalies. Renal anomalies may be severe, including dysplasia/hypoplasia and renal agenesis. Developmental delay / intellectual disability has been reported in more than half of affected individuals, although some affected individuals have had normal development, and some individuals succumbed to their congenital anomalies before developmental assessment could be performed. Other less common features may include cleft palate, eye anomalies, sensorineural hearing loss, tracheoesophageal fistula, polysplenia, anteriorly displaced anus, tethered spinal cord, cystic hygroma, epilepsy, hypothyroidism, and hypoparathyroidism.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1621146">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1621331"><div><strong>Joint laxity, short stature, and myopia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1621331</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540020</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare developmental defect with connective tissue involvement and characteristics of joint hyperextensibility and multiple dislocations of large joints, severe myopia and short stature. Other common features include retinal detachment, iris and chorioretinal coloboma, kyphoscoliosis and other spine deformities, pectus carinatum, talipes equinovarus and progressive hearing loss.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1621331">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1621755"><div><strong>Developmental and epileptic encephalopathy, 56</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1621755</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540034</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-56 (DEE56) is a neurodevelopmental disorder characterized by early-onset seizures in most patients, followed by impaired intellectual development, variable behavioral abnormalities, and sometimes additional neurologic features, such as ataxia (summary by Guella et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1621755">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1619150"><div><strong>Pilarowski-Bjornsson syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1619150</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540131</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pilarowski-Bjornsson syndrome (PILBOS) is an autosomal dominant neurodevelopmental disorder characterized by delayed development, impaired intellectual development, often with autistic features, speech apraxia, and mild dysmorphic features. Some patients may have seizures. The phenotype is somewhat variable (summary by Pilarowski et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1619150">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1611968"><div><strong>Al Kaissi syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1611968</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540156</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Al Kaissi syndrome (ALKAS) is an autosomal recessive developmental disorder characterized by growth retardation, spine malformation, particularly of the cervical spine, dysmorphic facial features, and delayed psychomotor development with moderate to severe intellectual disability (summary by Windpassinger et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1611968">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1619876"><div><strong>Neurodevelopmental disorder, mitochondrial, with abnormal movements and lactic acidosis, with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1619876</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540192</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The current (but limited) understanding of the WARS2 deficiency phenotypic spectrum, based on 29 individuals from 24 families reported to date, can be viewed as a clustering of hallmark features within the broad phenotypes of epilepsy and movement disorder. The epilepsy spectrum encompasses neonatal- or infantile-onset developmental and epileptic encephalopathy (DEE) and other less well described seizure types. DEE manifests mostly in the neonatal period or within the first year of life. Seizures are generally difficult to control and may lead to status epilepticus and death. Over time the following become evident: global developmental delay, mild-to-severe intellectual disability, speech impairment (slurred and slow speech, dysarthria or no speech production but preserved receptive speech), weakness and muscle atrophy, motor hyperactivity with athetosis, and neuropsychiatric manifestations including aggressiveness and sleep disorders. The movement disorder spectrum encompasses the overlapping phenotypes of levodopa-responsive parkinsonism/dystonia and progressive myoclonus-ataxia/hyperkinetic movement disorder and is primarily associated with childhood or early adulthood onset. Of note, the continua within and between the epilepsy spectrum and the movement disorder spectrum remain to be determined pending reporting of more individuals with WARS2 deficiency.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1619876">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1626137"><div><strong>Developmental and epileptic encephalopathy 91</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1626137</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540199</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-91 (DEE91) is characterized by delayed psychomotor development apparent in infancy and resulting in severely to profoundly impaired intellectual development with poor or absent speech. Most patients never achieve independent walking. Patients typically have onset of refractory multifocal seizures between the first weeks and years of life, and some may show developmental regression. Additional features, such as hypotonia and cortical visual impairment, are more variable (summary by Myers et al., 2017).&#13; For a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1626137">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1627611"><div><strong>Galloway-Mowat syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1627611</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540266</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Galloway-Mowat syndrome is a renal-neurologic disease characterized by early-onset nephrotic syndrome associated with microcephaly, gyral abnormalities of the brain, and delayed psychomotor development. Most patients have dysmorphic facial features, often including hypertelorism, ear abnormalities, and micrognathia. Other features, such as arachnodactyly and visual impairment, are more variable. Most patients die in the first years of life (summary by Braun et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of GAMOS, see GAMOS1 (251300).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1627611">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1613511"><div><strong>Galloway-Mowat syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1613511</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540270</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Galloway-Mowat syndrome is a renal-neurologic disease characterized by early-onset nephrotic syndrome associated with microcephaly, gyral abnormalities, and delayed psychomotor development. Most patients have dysmorphic facial features, often including hypertelorism, ear abnormalities, and micrognathia. Other features, such as arachnodactyly and visual impairment, are more variable. Most patients die in the first years of life (summary by Braun et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of GAMOS, see GAMOS1 (251300).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1613511">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1617227"><div><strong>Galloway-Mowat syndrome 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1617227</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540274</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Galloway-Mowat syndrome is a renal-neurologic disease characterized by early-onset nephrotic syndrome associated with microcephaly, gyral abnormalities, and delayed psychomotor development. Most patients have dysmorphic facial features, often including hypertelorism and ear abnormalities. Other features, such as arachnodactyly and visual or hearing impairment, are more variable. Most patients die in the first years of life (summary by Braun et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of GAMOS, see GAMOS1 (251300).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1617227">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1619532"><div><strong>Intellectual disability, autosomal dominant 48</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1619532</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540321</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by global developmental delay and moderate to severe intellectual disability, as well as variable other manifestations, such as macro- or microcephaly, epilepsy, hypotonia, behavioral problems, stereotypic movements, and facial dysmorphism (including arched eyebrows, long palpebral fissures, prominent nasal bridge, upturned nose, dysplastic ears, and broad mouth), among others. Brain imaging may show cerebellar anomalies, hypoplastic corpus callosum, enlarged ventricles, polymicrogyria, or white matter abnormalities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1619532">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1627464"><div><strong>Neurodevelopmental disorder with dysmorphic facies and distal limb anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1627464</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540327</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NEDDFL is a neurodevelopmental disorder characterized by delayed psychomotor development and impaired intellectual development, poor growth with small head size, dysmorphic facial features, and mild abnormalities of the hands and feet (summary by Stankiewicz et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1627464">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1623903"><div><strong>Kleefstra syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1623903</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540395</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Kleefstra syndrome-2 (KLEFS2) is an autosomal dominant neurodevelopmental disorder characterized by delayed psychomotor development, variably impaired intellectual development, and mild dysmorphic features (summary by Koemans et al., 2017).&#13; For a discussion of genetic heterogeneity of Kleefstra syndrome, see KLEFS1 (610253).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1623903">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1622296"><div><strong>Intellectual disability, autosomal recessive 61</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1622296</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540424</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">MRT61 is an autosomal recessive neurodevelopmental disorder characterized by delayed psychomotor development, moderate to severe intellectual disability, and variable dysmorphic facial features. More severely affected patients may develop refractory seizures and have brain abnormalities, including hypoplasia of the corpus callosum (summary by Alwadei et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1622296">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1616989"><div><strong>Intellectual disability, autosomal dominant 50</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1616989</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540470</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant intellectual developmental disorder-50 with behavioral abnormalities (MRD50) is characterized by variable levels of impaired intellectual development, delayed speech and motor milestones, and behavioral abnormalities, most commonly autism spectrum disorder (ASD). Some patients may also have mild craniofacial dysmorphism, congenital cardiac anomalies, or seizures (summary by Cheng et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1616989">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1625009"><div><strong>Intellectual disability, autosomal dominant 51</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1625009</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540474</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1625009">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1615839"><div><strong>Intellectual disability, autosomal dominant 52</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1615839</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540478</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1615839">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1623344"><div><strong>Intellectual disability, autosomal dominant 53</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1623344</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540481</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1623344">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1614787"><div><strong>Intellectual disability, autosomal dominant 54</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1614787</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540484</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1614787">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1615361"><div><strong>Neurodevelopmental disorder with microcephaly, seizures, and cortical atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1615361</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540493</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with microcephaly, seizures, and cortical atrophy (NDMSCA) is an autosomal recessive disorder characterized by severe global developmental delay with poor motor and intellectual function apparent soon after birth, as well as postnatal progressive microcephaly. Most patients develop early-onset, frequent, and often intractable seizures, compatible with an epileptic encephalopathy. Other features include poor feeding, poor overall growth, absent speech, poor or absent eye contact, inability to achieve walking, hypotonia, and peripheral spasticity. Brain imaging usually shows progressive cerebral atrophy, thin corpus callosum, and abnormalities in myelination. Death in childhood may occur (summary by Siekierska et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1615361">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1622162"><div><strong>Neurodevelopmental disorder with severe motor impairment and absent language</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1622162</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540496</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">NEDMIAL is a neurodevelopmental disorder characterized by delayed psychomotor development and hypotonia apparent from early infancy, resulting in feeding difficulties, ataxic gait or inability to walk, delayed or absent speech development, and impaired intellectual development, sometimes with behavioral abnormalities, such as hand-flapping. Additional common features may include sleep disorder, nonspecific dysmorphic facial features, and joint hyperlaxity (summary by Lessel et al., 2017 and Mannucci et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1622162">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1621102"><div><strong>Neurodevelopmental disorder with ataxic gait, absent speech, and decreased cortical white matter</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1621102</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540498</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NDAGSCW is a neurodevelopmental disorder characterized by severely delayed psychomotor development apparent from infancy. Affected individuals have delayed and difficulty walking, intellectual disability, absent speech, and variable additional features, including hip dysplasia, tapering fingers, and seizures. Brain imaging shows decreased cortical white matter, often with decreased cerebellar white matter, thin corpus callosum, and thin brainstem (summary by Lamers et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1621102">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1615540"><div><strong>Coffin-Siris syndrome 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1615540</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540499</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Coffin-Siris syndrome (CSS) is classically characterized by aplasia or hypoplasia of the distal phalanx or nail of the fifth and additional digits, developmental or cognitive delay of varying degree, distinctive facial features, hypotonia, hirsutism/hypertrichosis, and sparse scalp hair. Congenital anomalies can include malformations of the cardiac, gastrointestinal, genitourinary, and/or central nervous systems. Other findings commonly include feeding difficulties, slow growth, ophthalmologic abnormalities, and hearing impairment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1615540">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1615160"><div><strong>Glycosylphosphatidylinositol biosynthesis defect 15</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1615160</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540520</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GPIBD15 is an autosomal recessive disorder characterized by delayed psychomotor development, variable intellectual disability, hypotonia, early-onset seizures in most patients, and cerebellar atrophy, resulting in cerebellar signs including gait ataxia and dysarthria. The disorder is caused by a defect in glycosylphosphatidylinositol (GPI) biosynthesis (summary by Nguyen et al., 2017).&#13; For a discussion of genetic heterogeneity of GPI biosynthesis defects, see GPIBD1 (610293).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1615160">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1628197"><div><strong>Glycosylphosphatidylinositol biosynthesis defect 16</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1628197</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540521</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1628197">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1637056"><div><strong>Seckel syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1637056</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551474</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Seckel syndrome is a rare autosomal recessive disorder characterized by intrauterine growth retardation, dwarfism, microcephaly with mental retardation, and a characteristic 'bird-headed' facial appearance (Shanske et al., 1997).&#13; Genetic Heterogeneity of Seckel Syndrome&#13; Other forms of Seckel syndrome include SCKL2 (606744), caused by mutation in the RBBP8 gene (604124) on chromosome 18q11; SCKL4 (613676), caused by mutation in the CENPJ gene (609279) on chromosome 13q12; SCKL5 (613823), caused by mutation in the CEP152 gene (613529) on chromosome 15q21; SCKL6 (614728), caused by mutation in the CEP63 gene (614724) on chromosome 3q22; SCKL7 (614851), caused by mutation in the NIN gene (608684) on chromosome 14q22; SCKL8 (615807), caused by mutation in the DNA2 gene (601810) on chromosome 10q21; SCKL9 (616777), caused by mutation in the TRAIP gene (605958) on chromosome 3p21; SCKL10 (617253), caused by mutation in the NSMCE2 gene (617246) on chromosome 8q24; and SCKL11 (620767), caused by mutation in the CEP295 gene (617728) on chromosome 11q21.&#13; The report of a Seckel syndrome locus on chromosome 14q, designated SCKL3, by Kilinc et al. (2003) was found to be in error; see History section.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1637056">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1641736"><div><strong>Autosomal dominant Robinow syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1641736</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551475</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant Robinow syndrome (ADRS) is characterized by skeletal findings (short stature, mesomelic limb shortening predominantly of the upper limbs, and brachydactyly), genital abnormalities (in males: micropenis / webbed penis, hypoplastic scrotum, cryptorchidism; in females: hypoplastic clitoris and labia majora), dysmorphic facial features (widely spaced and prominent eyes, frontal bossing, anteverted nares, midface retrusion), dental abnormalities (including malocclusion, crowding, hypodontia, late eruption of permanent teeth), bilobed tongue, and occasional prenatal macrocephaly that persists postnatally. Less common findings include renal anomalies, radial head dislocation, vertebral abnormalities such as hemivertebrae and scoliosis, nail dysplasia, cardiac defects, cleft lip/palate, and (rarely) cognitive delay. When present, cardiac defects are a major cause of morbidity and mortality. A variant of Robinow syndrome, associated with osteosclerosis and caused by a heterozygous pathogenic variant in DVL1, is characterized by normal stature, persistent macrocephaly, increased bone mineral density with skull osteosclerosis, and hearing loss, in addition to the typical features described above.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1641736">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1647990"><div><strong>Schwartz-Jampel syndrome type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1647990</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551479</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Schwartz-Jampel syndrome type 1 (SJS1) is a rare autosomal recessive disorder characterized by muscle stiffness (myotonia) and chondrodysplasia. Affected individuals usually present in childhood with permanent muscle stiffness or bone deformities. Common clinical features include mask-like facies (narrow palpebral fissures, blepharospasm, and pursed lips); permanent muscle stiffness with continuous skeletal muscle activity recorded on electromyography; dwarfism; pectus carinatum; kyphoscoliosis; bowing of long bones; and epiphyseal, metaphyseal, and hip dysplasia. The disorder is slowly progressive but does not appear to alter life span (summary by Stum et al., 2006).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1647990">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1639061"><div><strong>Fraser syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1639061</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551480</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fraser syndrome is an autosomal recessive malformation disorder characterized by cryptophthalmos, syndactyly, and abnormalities of the respiratory and urogenital tract (summary by van Haelst et al., 2008).&#13; Genetic Heterogeneity of Fraser Syndrome&#13; Fraser syndrome-2 (FRASRS2) is caused by mutation in the FREM2 gene (608945) on chromosome 13q13, and Fraser syndrome-3 (FRASRS3; 617667) is caused by mutation in the GRIP1 gene (604597) on chromosome 12q14.&#13; See Bowen syndrome (211200) for a comparable but probably distinct syndrome of multiple congenital malformations.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1639061">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1635275"><div><strong>Townes-Brocks syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1635275</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551481</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SALL1-related Townes-Brocks syndrome (SALL1-TBS) is characterized by the triad of imperforate anus or anal stenosis, dysplastic ears (overfolded superior helices and preauricular tags; frequently associated with sensorineural and/or conductive hearing impairment), and thumb malformations (duplication of the thumb [preaxial polydactyly], triphalangeal thumbs, and, rarely, hypoplasia of the thumbs) without hypoplasia of the radius. Impaired kidney function, including end-stage kidney disease (ESKD), may occur with or without structural abnormalities (mild malrotation, ectopia, horseshoe kidney, renal hypoplasia, polycystic kidneys, vesicoureteral reflux). Foot malformations (flat feet, overlapping toes) and genitourinary malformations are common. Congenital heart disease occurs in 15% of affected individuals. Developmental delay and/or learning difficulties occur in approximately 15% of affected individuals. Rare features include growth deficiency, Duane anomaly, iris coloboma, and Chiari I malformation.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1635275">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1635567"><div><strong>Adams-Oliver syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1635567</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551482</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Adams-Oliver syndrome is a rare condition that is present at birth. The primary features are an abnormality in skin development (called aplasia cutis congenita) and malformations of the limbs. A variety of other features can occur in people with Adams-Oliver syndrome.\n\nMost people with Adams-Oliver syndrome have aplasia cutis congenita, a condition characterized by localized areas of missing skin typically occurring on the top of the head (the skull vertex). In some cases, the bone under the skin is also underdeveloped. Individuals with this condition commonly have scarring and an absence of hair growth in the affected area.\n\nAbnormalities of the hands and feet are also common in people with Adams-Oliver syndrome. These most often involve the fingers and toes and can include abnormal nails, fingers or toes that are fused together (syndactyly), and abnormally short or missing fingers or toes (brachydactyly or oligodactyly). In some cases, other bones in the hands, feet, or lower limbs are malformed or missing.\n\nSome affected infants have a condition called cutis marmorata telangiectatica congenita. This disorder of the blood vessels causes a reddish or purplish net-like pattern on the skin. In addition, people with Adams-Oliver syndrome can develop high blood pressure in the blood vessels between the heart and the lungs (pulmonary hypertension), which can be life-threatening. Other blood vessel problems and heart defects can occur in affected individuals.\n\nIn some cases, people with Adams-Oliver syndrome have neurological problems, such as developmental delay, learning disabilities, or abnormalities in the structure of the brain.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1635567">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1647044"><div><strong>Hyperphosphatasia with intellectual disability syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1647044</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551502</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hyperphosphatasia with impaired intellectual development syndrome-1 (HPMRS1) is an autosomal recessive disorder characterized by impaired intellectual development, various neurologic abnormalities such as seizures and hypotonia, and hyperphosphatasia. Other features include facial dysmorphism and variable degrees of brachytelephalangy (summary by Krawitz et al., 2010). The disorder is caused by a defect in glycosylphosphatidylinositol biosynthesis; see GPIBD1 (610293).&#13; Genetic Heterogeneity of Hyperphosphatasia with Impaired Intellectual Development Syndrome&#13; See also HPMRS2 (614749), caused by mutation in the PIGO gene (614730) on chromosome 9p13; HPMRS3 (614207), caused by mutation in the PGAP2 gene (615187) on chromosome 11p15; HPMRS4 (615716), caused by mutation in the PGAP3 gene (611801) on chromosome 17q12; HPMRS5 (616025), caused by mutation in the PIGW gene (610275) on chromosome 17q12; and HPMRS6 (616809), caused by mutation in the PIGY gene (610662) on chromosome 4q22.&#13; Knaus et al. (2018) provided a review of the main clinical features of the different types of HPMRS, noting that some patients have a distinct pattern of facial anomalies that can be detected by computer-assisted comparison, particularly those with mutations in the PIGV and PGAP3 genes. Individuals with HPMRS have variable increased in alkaline phosphatase (AP) as well as variable decreases in GPI-linked proteins that can be detected by flow cytometry. However, there was no clear correlation between AP levels or GPI-linked protein abnormalities and degree of neurologic involvement, mutation class, or gene involved. Knaus et al. (2018) concluded that a distinction between HPMRS and MCAHS (see, e.g., 614080), which is also caused by mutation in genes involved in GPI biosynthesis, may be artificial and even inaccurate, and that all these disorders should be considered and classified under the more encompassing term of 'GPI biosynthesis defects' (GPIBD).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1647044">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1644017"><div><strong>RAB23-related Carpenter syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1644017</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551510</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any Carpenter syndrome in which the cause of the disease is a mutation in the RAB23 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1644017">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1639436"><div><strong>Cerebellar ataxia, intellectual disability, and dysequilibrium syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1639436</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551552</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">VLDLR cerebellar hypoplasia (VLDLR-CH) is characterized by non-progressive congenital ataxia that is predominantly truncal and results in delayed ambulation, moderate-to-profound intellectual disability, dysarthria, strabismus, and seizures. Children either learn to walk very late (often after age 6 years) or never achieve independent ambulation. Brain MRI findings include hypoplasia of the inferior portion of the cerebellar vermis and hemispheres, simplified gyration of the cerebral hemispheres, and small brain stem – particularly the pons.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1639436">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1636193"><div><strong>Immunodeficiency-centromeric instability-facial anomalies syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1636193</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551557</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Immunodeficiency, centromeric instability, and facial dysmorphism (ICF) syndrome is a rare autosomal recessive disease characterized by facial dysmorphism, immunoglobulin deficiency, and branching of chromosomes 1, 9, and 16 after phytohemagglutinin (PHA) stimulation of lymphocytes. Hypomethylation of DNA of a small fraction of the genome is an unusual feature of ICF patients that is explained by mutations in the DNMT3B gene in some, but not all, ICF patients (Hagleitner et al., 2008).&#13; Genetic Heterogeneity of Immunodeficiency-Centromeric Instability-Facial Anomalies Syndrome&#13; See also ICF2 (614069), caused by mutation in the ZBTB24 gene (614064) on chromosome 6q21; ICF3 (616910), caused by mutation in the CDCA7 gene (609937) on chromosome 2q31; and ICF4 (616911), caused by mutation in the HELLS gene (603946) on chromosome 10q23.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1636193">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1647111"><div><strong>Fibromatosis, gingival, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1647111</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551558</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any gingival fibromatosis in which the cause of the disease is a mutation in the SOS1 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1647111">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1639722"><div><strong>Senior-Loken syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1639722</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551559</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nephronophthisis causes fluid-filled cysts to develop in the kidneys beginning in childhood. These cysts impair kidney function, initially causing increased urine production (polyuria), excessive thirst (polydipsia), general weakness, and extreme tiredness (fatigue). Nephronophthisis leads to end-stage renal disease (ESRD) later in childhood or in adolescence. ESRD is a life-threatening failure of kidney function that occurs when the kidneys are no longer able to filter fluids and waste products from the body effectively.\n\nLeber congenital amaurosis primarily affects the retina, which is the specialized tissue at the back of the eye that detects light and color. This condition causes vision problems, including an increased sensitivity to light (photophobia), involuntary movements of the eyes (nystagmus), and extreme farsightedness (hyperopia). Some people with Senior-Løken syndrome develop the signs of Leber congenital amaurosis within the first few years of life, while others do not develop vision problems until later in childhood.\n\nSenior-Løken syndrome is a rare disorder characterized by the combination of two specific features: a kidney condition called nephronophthisis and an eye condition known as Leber congenital amaurosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1639722">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1644883"><div><strong>Joubert syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1644883</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551568</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Classic Joubert syndrome (JS) is characterized by three primary findings: A distinctive cerebellar and brain stem malformation called the molar tooth sign (MTS). Hypotonia. Developmental delays. Often these findings are accompanied by episodic tachypnea or apnea and/or atypical eye movements. In general, the breathing abnormalities improve with age, truncal ataxia develops over time, and acquisition of gross motor milestones is delayed. Cognitive abilities are variable, ranging from severe intellectual disability to normal. Additional findings can include retinal dystrophy, renal disease, ocular colobomas, occipital encephalocele, hepatic fibrosis, polydactyly, oral hamartomas, and endocrine abnormalities. Both intra- and interfamilial variation are seen.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1644883">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1631916"><div><strong>Multiple benign circumferential skin creases on limbs 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1631916</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551592</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1631916">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1638960"><div><strong>Noonan syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1638960</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551602</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Noonan syndrome (NS) is characterized by characteristic facies, short stature, congenital heart defect, and developmental delay of variable degree. Other findings can include broad or webbed neck, unusual chest shape with superior pectus carinatum and inferior pectus excavatum, cryptorchidism, varied coagulation defects, lymphatic dysplasias, and ocular abnormalities. Although birth length is usually normal, final adult height approaches the lower limit of normal. Congenital heart disease occurs in 50%-80% of individuals. Pulmonary valve stenosis, often with dysplasia, is the most common heart defect and is found in 20%-50% of individuals. Hypertrophic cardiomyopathy, found in 20%-30% of individuals, may be present at birth or develop in infancy or childhood. Other structural defects include atrial and ventricular septal defects, branch pulmonary artery stenosis, and tetralogy of Fallot. Up to one fourth of affected individuals have mild intellectual disability, and language impairments in general are more common in NS than in the general population.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1638960">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1641635"><div><strong>Wolfram syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1641635</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551693</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">WFS1 spectrum disorder (WFS1-SD) comprises classic WFS1 spectrum disorder and nonclassic WFS1 spectrum disorder. Classic WFS1-SD, a progressive neurodegenerative disorder, is characterized by onset of diabetes mellitus and optic atrophy before age 16 years. Additional complications may include one or more of the following: variable hearing impairment / deafness, diabetes insipidus, neurologic abnormalities, neurogenic bladder, and psychiatric abnormalities. Nonclassic WFS1-SD is less common than classic WFS1-SD. Phenotypes that appear to be milder than classic WFS1-SD include: optic atrophy and hearing impairment; neonatal diabetes, profound congenital deafness, and cataracts; isolated diabetes mellitus; isolated congenital cataracts; and isolated congenital, slowly progressive, and low-frequency (&lt;2000 Hz) sensorineural hearing loss.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1641635">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1634188"><div><strong>Galloway-Mowat syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1634188</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551772</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1634188">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1637716"><div><strong>Feingold syndrome type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1637716</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551774</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Feingold syndrome 1 (referred to as FS1 in this GeneReview) is characterized by digital anomalies (shortening of the 2nd and 5th middle phalanx of the hand, clinodactyly of the 5th finger, syndactyly of toes 2-3 and/or 4-5, thumb hypoplasia), microcephaly, facial dysmorphism (short palpebral fissures and micrognathia), gastrointestinal atresias (primarily esophageal and/or duodenal), and mild-to-moderate learning disability.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1637716">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1642123"><div><strong>Knobloch syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1642123</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551775</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Knobloch syndrome-1 (KNO1) is an autosomal recessive developmental disorder primarily characterized by typical eye abnormalities, including high myopia, cataracts, dislocated lens, vitreoretinal degeneration, and retinal detachment, with occipital skull defects, which can range from occipital encephalocele to occult cutis aplasia (summary by Aldahmesh et al., 2011).&#13; Genetic Heterogeneity of Knobloch Syndrome&#13; KNO2 (618458) is caused by mutation in the PAK2 gene (605022) on chromosome 3q29.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1642123">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1645760"><div><strong>Cornelia de Lange syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1645760</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551851</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cornelia de Lange syndrome (CdLS) encompasses a spectrum of findings from mild to severe. Severe (classic) CdLS is characterized by distinctive facial features, growth restriction (prenatal onset; &lt;5th centile throughout life), hypertrichosis, and upper-limb reduction defects that range from subtle phalangeal abnormalities to oligodactyly (missing digits). Craniofacial features include synophrys, highly arched and/or thick eyebrows, long eyelashes, short nasal bridge with anteverted nares, small widely spaced teeth, and microcephaly. Individuals with a milder phenotype have less severe growth, cognitive, and limb involvement, but often have facial features consistent with CdLS. Across the CdLS spectrum IQ ranges from below 30 to 102 (mean: 53). Many individuals demonstrate autistic and self-destructive tendencies. Other frequent findings include cardiac septal defects, gastrointestinal dysfunction, hearing loss, myopia, and cryptorchidism or hypoplastic genitalia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1645760">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1639327"><div><strong>Rubinstein-Taybi syndrome due to CREBBP mutations</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1639327</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551859</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rubinstein-Taybi syndrome (RSTS) is characterized by distinctive facial features, broad and often angulated thumbs and halluces, short stature, and moderate-to-severe intellectual disability. Characteristic craniofacial features include downslanted palpebral fissures, low-hanging columella, high palate, grimacing smile, and talon cusps. Prenatal growth is often normal, then height, weight, and head circumference percentiles rapidly drop in the first few months of life. Short stature is typical in adulthood. Obesity may develop in childhood or adolescence. Average IQ ranges between 35 and 50; however, developmental outcome varies considerably. Some individuals with EP300-related RSTS have normal intellect. Additional features include ocular abnormalities, hearing loss, respiratory difficulties, congenital heart defects, renal abnormalities, cryptorchidism, feeding problems, recurrent infections, and severe constipation.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1639327">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1646646"><div><strong>TWIST1-related craniosynostosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1646646</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551902</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Craniosynostosis is a primary abnormality of skull growth involving premature fusion of the cranial sutures such that the growth velocity of the skull often cannot match that of the developing brain. This produces skull deformity and, in some cases, raises intracranial pressure, which must be treated promptly to avoid permanent neurodevelopmental disability (summary by Fitzpatrick, 2013). Mutation in the TWIST1 has been found to cause coronal and sagittal forms of craniosynostosis.&#13; Genetic Heterogeneity of Craniosynostosis&#13; Craniosynostosis-2 (CRS2; 604757) is caused by mutation in the MSX2 gene (123101) on chromosome 5q35. Craniosynostosis-3 (CRS3; 615314) is caused by mutation in the TCF12 gene (600480) on chromosome 15q21. Craniosynostosis-4 (CRS4; 600775) is caused by mutation in the ERF gene (611888) on chromosome 19q13. Susceptibility to craniosynostosis-5 (CRS5; 615529) is conferred by variation in the ALX4 gene (605420) on chromosome 11p11. Craniosynostosis-6 (CRS6; 616602) is caused by mutation in the ZIC1 gene (600470) on chromosome 3q24. Susceptibility to craniosynostosis-7 (CRS7; 617439) is conferred by variation in the SMAD6 gene (602931) on chromosome 15q22.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1646646">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1644627"><div><strong>Van Maldergem syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1644627</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551950</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Van Maldergem syndrome is an autosomal recessive disorder characterized by intellectual disability, typical craniofacial features, auditory malformations resulting in hearing loss, and skeletal and limb malformations. Some patients have renal hypoplasia. Brain MRI typically shows periventricular nodular heterotopia (summary by Cappello et al., 2013).&#13; Genetic Heterogeneity of Van Maldergem Syndrome&#13; See also VMLDS2 (615546), caused by mutation in the FAT4 gene (612411) on chromosome 4q28.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1644627">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1646567"><div><strong>Loeys-Dietz syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1646567</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551955</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Loeys-Dietz syndrome (LDS) is characterized by vascular findings (cerebral, thoracic, and abdominal arterial aneurysms and/or dissections), skeletal manifestations (pectus excavatum or pectus carinatum, scoliosis, joint laxity, arachnodactyly, talipes equinovarus, and cervical spine malformation and/or instability), craniofacial features (hypertelorism, strabismus, bifid uvula / cleft palate, and craniosynostosis that can involve any sutures), and cutaneous findings (velvety and translucent skin, easy bruising, and dystrophic scars). Individuals with LDS are predisposed to widespread and aggressive arterial aneurysms and pregnancy-related complications including uterine rupture and death. Individuals with LDS can show a strong predisposition for allergic/inflammatory disease including asthma, eczema, and reactions to food or environmental allergens. There is also an increased incidence of gastrointestinal inflammation including eosinophilic esophagitis and gastritis or inflammatory bowel disease. Wide variation in the distribution and severity of clinical features can be seen in individuals with LDS, even among affected individuals within a family who have the same pathogenic variant.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1646567">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1634824"><div><strong>Myopathy, lactic acidosis, and sideroblastic anemia 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1634824</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551958</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Myopathy, lactic acidosis, and sideroblastic anemia (MLASA) is a rare autosomal recessive oxidative phosphorylation disorder specific to skeletal muscle and bone marrow (Bykhovskaya et al., 2004).&#13; Genetic Heterogeneity of Myopathy, Lactic Acidosis, and Sideroblastic Anemia &#13; MLASA2 (613561) is caused by mutation in the YARS2 gene (610957) on chromosome 12p11. MLASA3 (500011) is caused by heteroplasmic mutation in the mitochondrially-encoded MTATP6 gene (516060).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1634824">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1638106"><div><strong>Anauxetic dysplasia 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1638106</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551965</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The cartilage-hair hypoplasia – anauxetic dysplasia (CHH-AD) spectrum disorders are a continuum that includes the following phenotypes: Metaphyseal dysplasia without hypotrichosis (MDWH). Cartilage-hair hypoplasia (CHH). Anauxetic dysplasia (AD). CHH-AD spectrum disorders are characterized by severe disproportionate (short-limb) short stature that is usually recognized in the newborn, and occasionally prenatally because of the short extremities. Other findings include joint hypermobility, fine, silky hair, immunodeficiency, anemia, increased risk for malignancy, gastrointestinal dysfunction, and impaired spermatogenesis. The most severe phenotype, AD, has the most pronounced skeletal phenotype, may be associated with atlantoaxial subluxation in the newborn, and may include cognitive deficiency. The clinical manifestations of the CHH-AD spectrum disorders are variable, even within the same family.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1638106">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1645412"><div><strong>Encephalopathy due to GLUT1 deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1645412</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551966</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Glucose transporter type 1 deficiency syndrome (Glut1DS) is a disorder of brain energy metabolism. Glucose, the essential metabolic fuel for the brain, is transported into the brain exclusively by the protein glucose transporter type 1 (Glut1) across the endothelial cells forming the blood-brain barrier (BBB). Glut1DS results from the inability of Glut1 to transfer sufficient glucose across the BBB to meet the glucose demands of the brain. The needs of the brain for glucose increase rapidly after birth, peaking in early childhood, remaining high until about age 10 years, then gradually decreasing throughout adolescence and plateauing in early adulthood. When first diagnosed in infancy to early childhood, the predominant clinical findings of Glut1DS are paroxysmal eye-head movements, pharmacoresistant seizures of varying types, deceleration of head growth, and developmental delay. Subsequently children develop complex movement disorders and intellectual disability ranging from mild to severe. Institution of ketogenic diet therapies (KDTs) helps with early neurologic growth and development and seizure control. Typically, the earlier the treatment the better the long-term clinical outcome. When first diagnosed in later childhood to adulthood (occasionally in a parent following the diagnosis of an affected child), the predominant clinical findings of Glut1DS are usually complex paroxysmal movement disorders, spasticity, ataxia, dystonia, speech difficulty, and intellectual disability.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1645412">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1644310"><div><strong>Lissencephaly type 1 due to doublecortin gene mutation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1644310</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551968</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">DCX-related disorders include the neuronal migration disorders: Classic thick lissencephaly (more severe anteriorly), usually in males. Subcortical band heterotopia (SBH), primarily in females. Males with classic DCX-related lissencephaly typically have early and profound cognitive and language impairment, cerebral palsy, and epileptic seizures. The clinical phenotype in females with SBH varies widely with cognitive abilities that range from average or mild cognitive impairment to severe intellectual disability and language impairment. Seizures, which frequently are refractory to anti-seizure medication, may be either focal or generalized and behavioral problems may also be observed. In DCX-related lissencephaly and SBH the severity of the clinical manifestation correlates roughly with the degree of the underlying brain malformation as observed in cerebral imaging.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1644310">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1647369"><div><strong>Heimler syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1647369</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551980</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Heimler syndrome-1 (HMLR1), which represents the mildest end of the peroxisomal biogenesis disorder spectrum (see PBD1A, 214100), is a rare autosomal recessive disorder characterized by sensorineural hearing loss, enamel hyoplasia of the secondary dentition, and nail abnormalities (Ratbi et al., 2015).&#13; Genetic Heterogeneity of Heimler Syndrome&#13; Another form of Heimler syndrome (HMLR2; 616617) is caused by mutation in the PEX6 gene (601498) on chromosome 6p21.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1647369">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1641798"><div><strong>Epilepsy, familial focal, with variable foci 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1641798</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551983</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">DEPDC5-related epilepsy encompasses a range of epilepsy syndromes, almost all of which are characterized by focal seizures, with seizure onset in a discrete area of the brain. While most individuals with DEPDC5-related epilepsy have a normal brain MRI, some have epilepsy associated with a cortical malformation, usually focal cortical dysplasia or hemimegalencephaly. Seizure syndromes include familial focal epilepsy with variable foci (FFEVF), autosomal dominant sleep-related hypermotor epilepsy (ADSHE), familial mesial temporal lobe epilepsies (FMTLE), autosomal dominant epilepsy with auditory features (ADEAF), infantile spasms, and severe developmental encephalopathy. Although psychomotor development is usually normal, developmental delays, intellectual disability, or autism spectrum disorder have been reported in some individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1641798">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1632008"><div><strong>Acrofrontofacionasal dysostosis 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1632008</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551987</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1632008">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1631838"><div><strong>Mitochondrial DNA depletion syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1631838</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551995</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial neurogastrointestinal encephalopathy (MNGIE) disease is characterized by progressive gastrointestinal dysmotility (manifesting as early satiety, nausea, dysphagia, gastroesophageal reflux, postprandial emesis, episodic abdominal pain and/or distention, and diarrhea); cachexia; ptosis/ophthalmoplegia or ophthalmoparesis; leukoencephalopathy; and demyelinating peripheral neuropathy (manifesting as paresthesias (tingling, numbness, and pain) and symmetric and distal weakness more prominently affecting the lower extremities). The order in which manifestations appear is unpredictable. Onset is usually between the first and fifth decades; in about 60% of individuals, symptoms begin before age 20 years.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1631838">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1647320"><div><strong>Brain small vessel disease 1 with or without ocular anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1647320</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551998</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The spectrum of COL4A1-related disorders includes: small-vessel brain disease of varying severity including porencephaly, variably associated with eye defects (retinal arterial tortuosity, Axenfeld-Rieger anomaly, cataract) and systemic findings (kidney involvement, muscle cramps, cerebral aneurysms, Raynaud phenomenon, cardiac arrhythmia, and hemolytic anemia). On imaging studies, small-vessel brain disease is manifest as diffuse periventricular leukoencephalopathy, lacunar infarcts, microhemorrhage, dilated perivascular spaces, and deep intracerebral hemorrhages. Clinically, small-vessel brain disease manifests as infantile hemiparesis, seizures, single or recurrent hemorrhagic stroke, ischemic stroke, and isolated migraine with aura. Porencephaly (fluid-filled cavities in the brain detected by CT or MRI) is typically manifest as infantile hemiparesis, seizures, and intellectual disability; however, on occasion it can be an incidental finding. HANAC (hereditary angiopathy with nephropathy, aneurysms, and muscle cramps) syndrome usually associates asymptomatic small-vessel brain disease, cerebral large vessel involvement (i.e., aneurysms), and systemic findings involving the kidney, muscle, and small vessels of the eye. Two additional phenotypes include isolated retinal artery tortuosity and nonsyndromic autosomal dominant congenital cataract.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1647320">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1646345"><div><strong>Linear nevus sebaceous syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1646345</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4552097</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Schimmelpenning-Feuerstein-Mims syndrome, also known as linear sebaceous nevus syndrome, is characterized by sebaceous nevi, often on the face, associated with variable ipsilateral abnormalities of the central nervous system, ocular anomalies, and skeletal defects (summary by Happle, 1991 and Ernst et al., 2007). The linear sebaceous nevi follow the lines of Blaschko (Hornstein and Knickenberg, 1974; Bouwes Bavinck and van de Kamp, 1985). All cases are sporadic. The syndrome is believed to be caused by an autosomal dominant lethal mutation that survives by somatic mosaicism (Gorlin et al., 2001).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1646345">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1632414"><div><strong>Fanconi anemia, complementation group S</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1632414</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4554406</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fanconi anemia (FA) is characterized by physical abnormalities, bone marrow failure, and increased risk for malignancy. Physical abnormalities, present in approximately 75% of affected individuals, include one or more of the following: short stature, abnormal skin pigmentation, skeletal malformations of the upper and/or lower limbs, microcephaly, and ophthalmic and genitourinary tract anomalies. Progressive bone marrow failure with pancytopenia typically presents in the first decade, often initially with thrombocytopenia or leukopenia. The incidence of acute myeloid leukemia is 13% by age 50 years. Solid tumors – particularly of the head and neck, skin, and genitourinary tract – are more common in individuals with FA.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1632414">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1639885"><div><strong>Intellectual disability, X-linked 107</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1639885</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4692652</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1639885">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1634304"><div><strong>Alkuraya-Kucinskas syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1634304</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693347</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ALKKUCS is an autosomal recessive severe neurodevelopmental disorder characterized by arthrogryposis, brain abnormalities associated with cerebral parenchymal underdevelopment, and global developmental delay. Most affected individuals die in utero or soon after birth. Additional abnormalities may include hypotonia, dysmorphic facial features, and involvement of other organ systems, such as cardiac or renal. The few patients who survive have variable intellectual disability and may have seizures (summary by Gueneau et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1634304">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1638319"><div><strong>Developmental and epileptic encephalopathy 92</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1638319</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693362</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-92 (DEE92) is characterized in most patients by onset of seizures in infancy or childhood and associated with global developmental delay and variable impairment of intellectual development. The seizure type and severity varies, and seizures may be intractable in some patients. Some patients are severely affected, unable to walk or speak, whereas others show some development. Additional neurologic features, including cortical blindness, dystonia, and spasticity, may occur. Mutations occur de novo (summary by Hamdan et al., 2017).&#13; For a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1638319">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1635938"><div><strong>Intellectual disability, autosomal dominant 55, with seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1635938</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693371</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1635938">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1641343"><div><strong>Developmental delay and seizures with or without movement abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1641343</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693376</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">DEDSM is a neurodevelopmental disorder characterized by global developmental delay, variable intellectual disability, and early-onset seizures with a myoclonic component. Most patients have delayed motor development and show abnormal movements, including ataxia, dystonia, and tremor (summary by Hamdan et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1641343">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1638835"><div><strong>Intellectual disability, autosomal dominant 56</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1638835</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693389</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1638835">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1645968"><div><strong>Neurodevelopmental disorder with or without seizures and gait abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1645968</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693391</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with or without seizures and gait abnormalities (NEDSGA) is an autosomal dominant disorder characterized by global developmental delay apparent from infancy or early childhood, resulting in variably impaired intellectual development that can range from profound with absent speech to mild with an ability to attend special schools. Most affected individuals show irritability, stiffness, and hypertonia early in life, which progresses to spasticity and impaired gait later. Some patients may develop seizures of variable severity early in life (summary by Martin et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1645968">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1647077"><div><strong>Neurodevelopmental disorder with movement abnormalities, abnormal gait, and autistic features</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1647077</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693405</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with movement abnormalities, abnormal gait, and autistic features (NEDMAGA) is characterized by infantile-onset global developmental delay with severe to profound intellectual disability, mildly delayed walking with broad-based and unsteady gait, and absence of meaningful language. Patients have features of autism, with repetitive behaviors and poor communication, but usually are socially reactive and have a happy demeanor. More variable neurologic features include mild seizures, spasticity, and peripheral neuropathy (summary by Palmer et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1647077">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1639653"><div><strong>Combined oxidative phosphorylation deficiency 35</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1639653</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693466</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Combined oxidative phosphorylation deficiency-35 (COXPD35) is an autosomal recessive disorder characterized mainly by global developmental delay with intellectual disability, microcephaly, and early-onset myoclonic and other types of seizures. Affected individuals have variable deficiencies of mitochondrial respiratory enzyme complexes resulting from a defect in mitochondrial metabolism (summary by Kernohan et al., 2017).&#13; For a discussion of genetic heterogeneity of combined oxidative phosphorylation deficiency, see COXPD1 (609060).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1639653">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1638030"><div><strong>BODY MASS INDEX QUANTITATIVE TRAIT LOCUS 19</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1638030</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693522</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Patients with biallelic mutations in the ADCY3 gene show hyperphagia within the first 2 years of life and develop severe obesity. Other features include hyposmia or anosmia, and some patients exhibit mild to moderate intellectual disability (Saeed et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1638030">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1635255"><div><strong>Leukodystrophy, hypomyelinating, 14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1635255</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693535</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypomyelinating leukodystrophy-14 (HLD14) is an autosomal recessive neurodevelopmental disorder characterized by hypotonia, almost complete lack of motor or cognitive skills, and absent language development. Additional features include spasticity and intractable seizures; many patients also have perceptive hearing loss and/or blindness. Most patients require tube feeding or ventilatory support, and most die in the first years of life. Brain imaging shows hypomyelination, small caudate and putamen, and cerebral and cerebellar atrophy (summary by Hamilton et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of hypomyelinating leukodystrophy, see 312080.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1635255">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1637031"><div><strong>Neurodevelopmental disorder with poor language and loss of hand skills</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1637031</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693546</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NDPLHS is an autosomal dominant disorder characterized by developmental stagnation or regression apparent in the first years of life and manifest as loss of purposeful hand movements, loss of language, and intellectual disability. Additional features may include stereotypic movements, dystonia, gait abnormalities, sleep disturbances, and small hands and feet. The phenotype is reminiscent of Rett syndrome (RTT; 312750) (summary by Yoo et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1637031">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1633749"><div><strong>Developmental and epileptic encephalopathy, 59</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1633749</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693550</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-59 (DEE59) is characterized by severe global developmental delay apparent in infancy with onset of various types of seizures in the first months of life (range 3 to 11 months). The seizures are usually refractory and are often associated with hypsarrhythmia on EEG, although brain imaging is usually normal. More severely affected individuals may be unable to speak or walk, have poor interaction, and require a feeding tube (summary by the EuroEPINOMICS-RES Consortium et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1633749">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1641618"><div><strong>Microcephaly 20, primary, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1641618</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693572</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1641618">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1647427"><div><strong>Hypotonia, ataxia, developmental delay, and tooth enamel defect syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1647427</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693578</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An autosomal dominant condition caused by mutations(s) in the CTBP1 gene, encoding C-terminal-binding protein 1. It is characterized by hypotonia, ataxia, developmental delay, and tooth enamel defects.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1647427">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1632676"><div><strong>Chromosome 1p35 deletion syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1632676</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693669</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1632676">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1636349"><div><strong>Spinocerebellar ataxia 47</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1636349</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693672</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spinocerebellar ataxia-47 (SCA47) is an autosomal dominant neurologic disorder characterized by slowly progressive gait ataxia. Additional features usually include diplopia, dysarthria, and dysmetria. Brain imaging shows atrophy of the cerebellar vermis. The age at onset is variable: affected members in 1 reported family developed symptoms as adults in their thirties or forties, whereas 1 unrelated girl had onset in the first decade (Gennarino et al., 2018).&#13; For a general discussion of autosomal dominant spinocerebellar ataxia, see SCA1 (164400).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1636349">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1644927"><div><strong>Combined oxidative phosphorylation deficiency 36</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1644927</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693722</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1644927">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1643082"><div><strong>Multiple mitochondrial dysfunctions syndrome 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1643082</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693741</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Multiple mitochondrial dysfunctions syndrome-6 is an autosomal recessive severe neurodegenerative disorder with onset in early childhood. Affected individuals may have initial normal development, but show neurologic regression in the first year of life. They have hypotonia, inability to walk, poor speech, intellectual disability, and motor abnormalities, such as ataxia, dystonia, and spasticity. Some patients may die in childhood. Laboratory evidence indicates that the disorder results from mitochondrial dysfunction (summary by Vogtle et al., 2018).&#13; For a general description and a discussion of genetic heterogeneity of multiple mitochondrial dysfunctions syndrome, see MMDS1 (605711).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1643082">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1631337"><div><strong>Leukodystrophy, hypomyelinating, 16</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1631337</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693779</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypomyelinating leukodystrophy-16 (HLD16) is an autosomal dominant neurologic disorder characterized by onset of hypotonia, nystagmus, and mildly delayed motor development in infancy. Affected individuals have motor disabilities, including ataxic or broad-based gait, hyperreflexia, intention tremor, dysmetria, and a mild pyramidal syndrome. Some patients have cognitive impairment, whereas others may have normal cognition or mild intellectual disability with speech difficulties. Brain imaging typically shows hypomyelination, leukodystrophy, and thin corpus callosum (summary by Simons et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of hypomyelinating leukodystrophy, see 312080.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1631337">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1646846"><div><strong>Developmental and epileptic encephalopathy, 63</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1646846</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693810</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-63 (DEE63) is an autosomal recessive neurologic disorder characterized by early-onset refractory infantile spasms and myoclonic seizures in the first months to years of life. Affected individuals have severe to profound developmental delay, often with hypotonia and inability to sit or speak (summary by Redler et al., 2017).&#13; For a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1646846">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1647785"><div><strong>Ververi-Brady syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1647785</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693824</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ververi-Brady syndrome (VEBRAS) is characterized by mild developmental delay, mildly impaired intellectual development and speech delay, and mild dysmorphic facial features. Affected individuals can usually attend mainstream schools with support, and may also show autistic features (summary by Ververi et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1647785">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1647359"><div><strong>Jaberi-Elahi syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1647359</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693848</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Jaberi-Elahi syndrome (JABELS) is an autosomal recessive neurodevelopmental disorder characterized by developmental delay and impaired intellectual development with additional variable features. Patients have onset of symptoms in infancy, but the severity is highly variable. Some patients have social interaction and learn to walk but have an ataxic gait and abnormal movements, such as tremor or dystonia, whereas others do not achieve any motor control and are unable to speak. Additional features may include retinal anomalies, visual impairment, microcephaly, abnormal foot or hand posturing, and kyphoscoliosis; some patients have dysmorphic facial features or seizures. Brain imaging typically shows cerebellar atrophy and hypoplasia of the corpus callosum (summary by et al., 2016 and Bertoli-Avella et al., 2018).&#13; Neurodevelopmental disorder with characteristic facial and ectodermal features and tetraparesis-1 (NEDFET1; 620888) is a similar disorder caused by mutation in the GTPBP1 gene (602245) on chromosome 22q13.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1647359">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1641154"><div><strong>PHIP-related behavioral problems-intellectual disability-obesity-dysmorphic features syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1641154</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693860</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Chung-Jansen syndrome (CHUJANS) is characterized by global developmental delay apparent from infancy, impaired intellectual development or learning difficulties, behavioral abnormalities, dysmorphic features, and obesity. The severity of the phenotype and additional features are variable (summary by Jansen et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1641154">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1633501"><div><strong>Developmental and epileptic encephalopathy, 64</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1633501</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693899</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-64 (DEE64) is a neurodevelopmental disorder characterized by onset of seizures usually in the first year of life and associated with intellectual disability, poor motor development, and poor or absent speech. Additional features include hypotonia, abnormal movements, and nonspecific dysmorphic features. The severity is variable: some patients are unable to speak, walk, or interact with others as late as the teenage years, whereas others may have some comprehension (summary by Straub et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1633501">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1647704"><div><strong>Congenital disorder of glycosylation with defective fucosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1647704</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693905</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital disorder of glycosylation with defective fucosylation is an autosomal recessive multisystem disorder apparent from birth. Affected infants have poor growth, failure to thrive, hypotonia, skeletal anomalies, and delayed psychomotor development with intellectual disability. Additional highly variable congenital defects may be observed (summary by Ng et al., 2018).&#13; Genetic Heterogeneity of Congenital Disorders of Glycosylation with Defective Fucosylation&#13; See also CDGF2 (618323), caused by mutation in the FCSK gene (608675) on chromosome 16q22.&#13; For an overview of congenital disorders of glycosylation (CDG), see CDG1A (212065) and CDG2A (212066).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1647704">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1642888"><div><strong>Developmental and epileptic encephalopathy 93</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1642888</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693934</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy (DEE93) is an autosomal dominant neurologic disorder characterized by delayed psychomotor development, early-onset refractory seizures, and impaired intellectual development. The severity of the phenotype is highly variable: some patients may be nonverbal and nonambulatory with spastic quadriparesis and poor eye contact, whereas others have moderate intellectual disability (summary by Fassio et al., 2018).&#13; For a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1642888">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1643555"><div><strong>3p- syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1643555</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4706503</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Characteristic features of the distal 3p- syndrome include low birth weight, microcephaly, trigonocephaly, hypotonia, psychomotor and growth retardation, ptosis, telecanthus, downslanting palpebral fissures, and micrognathia. Postaxial polydactyly, renal anomalies, cleft palate, congenital heart defects (especially atrioventricular septal defects), preauricular pits, sacral dimple, and gastrointestinal anomalies are variable features. Although intellectual deficits are almost invariably associated with cytogenetically visible 3p deletions, rare patients with a 3p26-p25 deletion and normal intelligence or only mild abnormalities have been described (summary by Shuib et al., 2009).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1643555">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1640947"><div><strong>Alacrima, achalasia, and intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1640947</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4706563</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Alacrima, achalasia, and impaired intellectual development syndrome (AAMR) is an autosomal recessive disorder characterized by onset of these 3 main features at birth or in early infancy. More variable features include hypotonia, gait abnormalities, anisocoria, and visual or hearing deficits. The disorder shows similarity to the triple A syndrome (231550), but patients with AAMR do not have adrenal insufficiency (summary by Koehler et al., 2013).&#13; See also 300858 for a phenotypically similar disorder that shows X-linked inheritance.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1640947">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1642424"><div><strong>Congenital myopathy with internal nuclei and atypical cores</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1642424</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4707232</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Centronuclear myopathy is a condition characterized by muscle weakness (myopathy) and wasting (atrophy) in the skeletal muscles, which are the muscles used for movement. The severity of centronuclear myopathy varies among affected individuals, even among members of the same family.\n\nPeople with centronuclear myopathy begin experiencing muscle weakness at any time from birth to early adulthood. The muscle weakness slowly worsens over time and can lead to delayed development of motor skills, such as crawling or walking; muscle pain during exercise; and difficulty walking. Some affected individuals may need wheelchair assistance as the muscles atrophy and weakness becomes more severe. In rare instances, the muscle weakness improves over time.\n\nSome people with centronuclear myopathy experience mild to severe breathing problems related to the weakness of muscles needed for breathing. People with centronuclear myopathy may have droopy eyelids (ptosis) and weakness in other facial muscles, including the muscles that control eye movement. People with this condition may also have foot abnormalities, a high arch in the roof of the mouth (high-arched palate), and abnormal side-to-side curvature of the spine (scoliosis). Rarely, individuals with centronuclear myopathy have a weakened heart muscle (cardiomyopathy), disturbances in nerve function (neuropathy), or intellectual disability.\n\nA key feature of centronuclear myopathy is the displacement of the nucleus in muscle cells, which can be viewed under a microscope. Normally the nucleus is found at the edges of the rod-shaped muscle cells, but in people with centronuclear myopathy the nucleus is located in the center of these cells. How the change in location of the nucleus affects muscle cell function is unknown.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1642424">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648491"><div><strong>Citrullinemia type I</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648491</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4721769</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Citrullinemia type I (CTLN1) presents as a spectrum that includes a neonatal acute form (the "classic" form), a milder late-onset form (the "non-classic" form), a form in which women have onset of symptoms at pregnancy or post partum, and a form without symptoms or hyperammonemia. Distinction between the forms is based primarily on clinical findings, although emerging evidence suggests that measurement of residual argininosuccinate synthase enzyme activity may help to predict those who are likely to have a severe phenotype and those who are likely to have an attenuated phenotype. Infants with the acute neonatal form appear normal at birth. Shortly thereafter, they develop hyperammonemia and become progressively lethargic, feed poorly, often vomit, and may develop signs of increased intracranial pressure (ICP). Without prompt intervention, hyperammonemia and the accumulation of other toxic metabolites (e.g., glutamine) result in increased ICP, increased neuromuscular tone, spasticity, ankle clonus, seizures, loss of consciousness, and death. Children with the severe form who are treated promptly may survive for an indeterminate period of time, but usually with significant neurologic deficits. Even with chronic protein restriction and scavenger therapy, long-term complications such as liver failure and other (rarely reported) organ system manifestations are possible. The late-onset form may be milder than that seen in the acute neonatal form, but commences later in life for reasons that are not completely understood. The episodes of hyperammonemia are similar to those seen in the acute neonatal form, but the initial neurologic findings may be more subtle because of the older age of the affected individuals. Women with onset of severe symptoms including acute hepatic decompensation during pregnancy or in the postpartum period have been reported. Furthermore, previously asymptomatic and non-pregnant individuals have been described who remained asymptomatic up to at least age ten years, with the possibility that they could remain asymptomatic lifelong.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648491">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648310"><div><strong>Proteasome-associated autoinflammatory syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648310</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4746851</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Proteasome-associated autoinflammatory syndrome-1 (PRAAS1) is an autosomal recessive disorder characterized by early childhood onset of annular erythematous plaques on the face and extremities with subsequent development of partial lipodystrophy and laboratory evidence of immune dysregulation. More variable features include recurrent fever, severe joint contractures, muscle weakness and atrophy, hepatosplenomegaly, basal ganglia calcifications, and microcytic anemia (summary by Agarwal et al., 2010; Kitamura et al., 2011; Arima et al., 2011).&#13; This disorder encompasses Nakajo-Nishimura syndrome (NKJO); joint contractures, muscular atrophy, microcytic anemia, and panniculitis-induced lipodystrophy (JMP syndrome); and chronic atypical neutrophilic dermatosis with lipodystrophy and elevated temperature syndrome (CANDLE). Among Japanese patients, this disorder is best described as Nakajo-Nishimura syndrome, since both Nakajo (1939) and Nishimura et al. (1950) contributed to the original phenotypic descriptions.&#13; Genetic Heterogeneity of Proteasome-Associated Autoinflammatory Syndrome&#13; See also PRAAS2 (618048), caused by mutation in the POMP gene (613386) on chromosome 13q12; PRAAS3 (617591), caused by mutation in the PSMB4 gene (602177) on chromosome 1q21; PRAAS4 (619183), caused by mutation in the PSMG2 gene (609702) on chromosome 18p11; PRAAS5 (619175), caused by mutation in the PSMB10 gene (176847) on chromosome 16q22; and PRAAS6 (620796), caused by mutation in the PSMB9 gene (177045) on chromosome 6p21.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648310">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648389"><div><strong>X-linked external auditory canal atresia-dilated internal auditory canal-facial dysmorphism syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648389</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4746975</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked deafness-7 (DFNX7) is a congenital form of bilateral mixed or conductive hearing loss, which may be progressive. It is not associated with vestibular symptoms (Xing et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648389">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648278"><div><strong>Mitochondrial complex 1 deficiency, nuclear type 12</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648278</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4746984</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648278">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1669929"><div><strong>Autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1669929</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4747715</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SMALED2A is an autosomal dominant form of spinal muscular atrophy characterized by early childhood onset of muscle weakness and atrophy predominantly affecting the proximal and distal muscles of the lower extremity, although some patients may show upper extremity involvement. The disorder results in delayed walking, waddling gait, difficulty walking, and loss of distal reflexes. Some patients may have foot deformities or hyperlordosis, and some show mild upper motor signs, such as spasticity. Sensation, bulbar function, and cognitive function are preserved. The disorder shows very slow progression throughout life (summary by Oates et al., 2013).&#13; For discussion of genetic heterogeneity of lower extremity-predominant spinal muscular atrophy, see SMALED1 (158600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1669929">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648281"><div><strong>Coffin-Siris syndrome 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648281</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4747954</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Coffin-Siris syndrome (CSS) is classically characterized by aplasia or hypoplasia of the distal phalanx or nail of the fifth and additional digits, developmental or cognitive delay of varying degree, distinctive facial features, hypotonia, hirsutism/hypertrichosis, and sparse scalp hair. Congenital anomalies can include malformations of the cardiac, gastrointestinal, genitourinary, and/or central nervous systems. Other findings commonly include feeding difficulties, slow growth, ophthalmologic abnormalities, and hearing impairment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648281">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648280"><div><strong>Intellectual disability, autosomal dominant 57</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648280</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748003</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">MRD57 is an autosomal dominant neurodevelopmental disorder with a highly variable phenotype. Most affected individuals have delayed psychomotor development apparent in infancy or early childhood, language delay, and behavioral abnormalities. Additional features may include hypotonia, feeding problems, gastrointestinal issues, and dysmorphic facial features (summary by Reijnders et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648280">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648373"><div><strong>Neurodevelopmental disorder with cerebellar atrophy and with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648373</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748032</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with cerebellar atrophy and with or without seizures (NEDCAS) is an autosomal recessive disorder characterized by intellectual disability associated with ataxia (summary by Engel et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648373">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648354"><div><strong>Intellectual developmental disorder with or without epilepsy or cerebellar ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648354</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748041</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648354">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648486"><div><strong>Developmental and epileptic encephalopathy, 66</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648486</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748070</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-66 (DEE66) is a neurologic disorder characterized by the onset of various types of seizures in the first days or weeks of life. Most seizures have focal origins; secondary generalization is common. Seizure control is difficult at first, but may become easier with time. Affected individuals show global developmental delay with hypotonia, behavioral abnormalities, and dysmorphic features or ophthalmologic defects. Brain imaging often shows cerebellar dysgenesis. A subset of patients have extraneurologic manifestations, including hematologic and distal limb abnormalities (summary by Olson et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648486">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648309"><div><strong>Neurodevelopmental disorder with spasticity and poor growth</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648309</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748081</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with spasticity and poor growth (NEDSG) is an autosomal recessive disorder characterized by severe early-onset encephalopathy with progressive microcephaly (Nahorski et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648309">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648308"><div><strong>Spinocerebellar ataxia 42, early-onset, severe, with neurodevelopmental deficits</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648308</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748120</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648308">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648345"><div><strong>Neurodevelopmental disorder with regression, abnormal movements, loss of speech, and seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648345</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748127</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">IRF2BPL-related disorder is characterized by mild-to-profound developmental delay (with regression in many individuals), intellectual disability, seizures (generalized tonic-clonic, myoclonic, absence, focal tonic-clonic, complex partial, infantile spasms, and/or atonic seizures), movement disorder (ataxia, dystonia, tremor, and parkinsonism), spasticity, and neurobehavioral/psychiatric manifestations (autism spectrum disorder, autistic features, anxiety, depression, and psychosis). Feeding issues, gastrointestinal dysmotility, and ophthalmologic manifestations are also reported. Brain MRI can show focal or diffuse cortical and/or subcortical atrophy, cerebellar atrophy (particularly of the vermis), brain stem atrophy, and corpus callosum abnormalities including thinning/atrophy or thickening. Onset is highly variable and can be in the first year of life through the sixth decade. In some individuals the course of the disorder is progressive or debilitating.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648345">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648498"><div><strong>Intellectual developmental disorder with dysmorphic facies and behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648498</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748135</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648498">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648327"><div><strong>Intellectual developmental disorder with speech delay, dysmorphic facies, and t-cell abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648327</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748152</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any BAFopathy in which the cause of the disease is a mutation in the BCL11B gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648327">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648488"><div><strong>Intellectual disability, autosomal dominant 58</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648488</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748195</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648488">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648480"><div><strong>Peripheral neuropathy, autosomal recessive, with or without impaired intellectual development</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648480</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748283</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive peripheral neuropathy with or without impaired intellectual development is an early childhood-onset neurologic disorder characterized by slowly progressive distal motor impairment resulting in gait difficulties, often with loss of ambulation, and difficulties using the hands in most patients. Most affected individuals also have impaired intellectual development, although some have normal cognition. Electrophysiologic testing and sural nerve biopsy are most compatible with an axonal motor neuropathy; some patients may show signs of demyelination. Additional features may include eye movement abnormalities, claw hands, foot deformities, and scoliosis (summary by Ylikallio et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648480">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648468"><div><strong>Muscular dystrophy-dystroglycanopathy (limb-girdle), type C, 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648468</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748320</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MDDGC8 is an autosomal recessive muscular dystrophy with onset in childhood. The phenotype is highly variable: some patients may have gait difficulties and impaired intellectual development, whereas others may be clinically asymptomatic. Common features include calf hypertrophy and increased serum creatine kinase, and muscle biopsy often shows dystrophic features (summary by Endo et al., 2015). The disorder is part of a group of similar disorders resulting from defective glycosylation of alpha-dystroglycan (DAG1; 128239), collectively known as 'dystroglycanopathies' (Godfrey et al., 2007).&#13; For a discussion of genetic heterogeneity of muscular dystrophy- dystroglycanopathy type C, see MDDGC1 (609308).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648468">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648285"><div><strong>Developmental and epileptic encephalopathy, 67</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648285</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748341</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-67 (DEE67) is characterized by the onset of various types of seizures in the first months of life, although later onset may occur in milder cases. The seizures tend to be resistant to treatment. Affected individuals have global developmental delay with impaired motor and intellectual development, poor or absent speech, movement disorders, and stereotypic or autistic behavior (summary by Chatron et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648285">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648330"><div><strong>Cardiac, facial, and digital anomalies with developmental delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648330</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748484</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CAFDADD is a multisystemic developmental disorder with variable cardiac and digital anomalies and facial dysmorphism. Some patients may have seizures and ocular/aural abnormalities (Tokita et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648330">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648380"><div><strong>Bone marrow failure syndrome 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648380</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748488</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bone marrow failure syndrome-5 (BMFS5) is a hematologic disorder characterized by infantile onset of severe red cell anemia requiring transfusion. Additional features include hypogammaglobulinemia, poor growth with microcephaly, developmental delay, and seizures (summary by Toki et al., 2018)&#13; For a discussion of genetic heterogeneity of BMFS, see BMFS1 (614675).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648380">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648413"><div><strong>Microcephaly 24, primary, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648413</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748555</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648413">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648358"><div><strong>Intellectual developmental disorder and retinitis pigmentosa; IDDRP</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648358</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748658</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder and retinitis pigmentosa (IDDRP) is characterized by mildly to moderately impaired intellectual development and typical features of RP. Patients experience reduced night vision, constriction of visual fields, and reduced visual acuity; optic disc pallor, attenuated retinal blood vessels, and bone-spicule pigmentation are seen on funduscopy. Attention-deficit/hyperactivity disorder is observed in some patients (Tatour et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648358">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648495"><div><strong>Snijders Blok-Campeau syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648495</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748701</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Snijders Blok-Campeau syndrome (SNIBCPS) is an autosomal dominant neurodevelopmental disorder characterized by global developmental delay with impaired intellectual development and delayed speech acquisition. Affected individuals tend to have expressive language deficits, with speech apraxia and dysarthria. Other features include macrocephaly and characteristic facial features, such as prominent forehead and hypertelorism, hypotonia, and joint laxity. The severity of the neurologic deficits and presence of nonneurologic features is variable (summary by Snijders Blok et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648495">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648460"><div><strong>Intellectual disability, autosomal recessive 66</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648460</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748732</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MRT66 is a nonsyndromic autosomal recessive intellectual developmental disorder with delayed speech development, neuropsychiatric symptoms, and relatively normal life span (Philips et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648460">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648370"><div><strong>Mitochondrial complex 1 deficiency, nuclear type 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648370</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748770</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648370">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648481"><div><strong>Mitochondrial complex 1 deficiency, nuclear type 27</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648481</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748826</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex I deficiency nuclear type 27 (MC1DN27) is characterized by very low levels of complex I activity with normal levels of activity of complexes II, III, and IV. Patients present with impaired intellectual development or developmental delay, hypotonia or spasticity, and ophthalmologic abnormalities (Haack et al., 2012).&#13; For a discussion of genetic heterogeneity of mitochondrial complex I deficiency, see 252010.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648481">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648372"><div><strong>Arthrogryposis, cleft palate, craniosynostosis, and impaired intellectual development</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648372</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748872</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ACCIID is characterized by arthrogryposis, cleft palate, craniosynostosis, micrognathia, short stature, and impaired intellectual development. Seizures and bony abnormalities (severe slenderness of the ribs and tubular bones and perinatal fractures) have been observed (Mizuguchi et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648372">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648439"><div><strong>Mega-corpus-callosum syndrome with cerebellar hypoplasia and cortical malformations</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648439</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748927</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mega-corpus-callosum syndrome with cerebellar hypoplasia and cortical malformations (MCCCHCM) is an autosomal dominant neurodevelopmental disorder characterized by global developmental delay, impaired intellectual development, and characteristic brain abnormalities on brain imaging. Affected individuals have enlargement of the corpus callosum, enlarged ventricles, and cerebellar and brainstem hypoplasia. Other features may include lack of speech development, gait instability, and seizures. Some patients with MAST1 mutations may have impaired intellectual development and/or autism spectrum disorder without significant findings on brain imaging (summary by Tripathy et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648439">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648333"><div><strong>Cardiac-urogenital syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648333</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748946</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MYRF-related cardiac urogenital syndrome (MYRF-CUGS) is primarily characterized by anomalies of the internal and external genitalia, congenital heart defects, and eye anomalies. 46,XY individuals can have a range of anomalies of the genitalia, from isolated unilateral cryptorchidism to ambiguous genitalia to typical-appearing female genitalia. 46,XX individuals can have atypical internal genitalia including absent uterus, absent fallopian tubes, small or absent ovaries, absent vagina, or blind-ending vagina. A number of congenital heart defects have been described, with scimitar syndrome being the most common. Eye issues, present in a vast majority of affected individuals, include high hyperopia and nanophthalmos (an ocular malformation featuring short axial length due to small anterior and posterior segments with thickened choroid and sclera and normal lens volume). Because of the common nature of the eye anomalies, it has been suggested that this condition may be more accurately referred to as "MYRF-related ocular cardiac urogenital syndrome." Other features of the condition include a broad range of developmental delay /intellectual disability (DD/ID), from typical development and cognition to severe DD/ID; pulmonary abnormalities and diaphragmatic issues (congenital diaphragmatic hernia / diaphragmatic eventration); intestinal malrotation; and mild growth and feeding problems.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648333">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648355"><div><strong>Microcephaly, cataracts, impaired intellectual development, and dystonia with abnormal striatum</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648355</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748984</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The MCIDDS syndrome is characterized by microcephaly and growth retardation, congenital cataracts, impaired intellectual development with attention deficit-hyperactivity disorder, and dystonia, with striatal thinning seen on MRI (Al-Owain et al., 2013).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648355">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648471"><div><strong>Macrocephaly, acquired, with impaired intellectual development</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648471</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748993</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648471">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648407"><div><strong>Developmental and epileptic encephalopathy, 70</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648407</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4749023</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-70 (DEE70) is neurologic disorder characterized by the onset of epileptic spasms or seizures in the first months of life. EEG may show hypsarrhythmia, consistent with a clinical diagnosis of West syndrome. Affected individuals show severely delayed psychomotor development with impaired or absent walking and language skills; intellectual impairment ranges from moderate to severe (summary by Hamada et al., 2018).&#13; For a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648407">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1657090"><div><strong>Lissencephaly due to LIS1 mutation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1657090</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4749301</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">PAFAH1B1-related lissencephaly / subcortical band heterotopia (SBH) comprises a spectrum of severity. Affected newborns typically have mild-to-moderate hypotonia, feeding difficulties, and poor head control. During the first years, neurologic examination typically demonstrates poor visual tracking and response to sounds, axial hypotonia, and mild distal spasticity that can transition over time to more severe spasticity. Seizures occur in more than 90% of individuals with lissencephaly and often include infantile spasms. Seizures are often drug resistant, but even with good seizure control, the best developmental level achieved (excluding the few individuals with partial lissencephaly) is the equivalent of about age three to five months. In individuals with PAFAH1B1-related lissencephaly/SBH, developmental delay ranges from mild to severe. Other findings in PAFAH1B1-related lissencephaly/SBH include feeding issues and aspiration (which may result in need for gastrostomy tube placement), progressive microcephaly, and occasional developmental regression.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1657090">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1656239"><div><strong>Severe feeding difficulties-failure to thrive-microcephaly due to ASXL3 deficiency syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1656239</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4750837</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ASXL3-related disorder is characterized by developmental delay or intellectual disability, typically in the moderate to severe range, with speech and language delay and/or absent speech. Affected individuals may also display autistic features. There may be issues with feeding. While dysmorphic facial features have been described, they are typically nonspecific. Affected individuals may also have hypotonia that can transition to spasticity resulting in unusual posture with flexion contractions of the elbows, wrists, and fingers. Other findings may include poor postnatal growth, strabismus, seizures, sleep disturbance, and dental anomalies.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1656239">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1665943"><div><strong>Intellectual disability-strabismus syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1665943</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4750838</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with brain abnormalities, poor growth, and dysmorphic facies (NEDBGF) is an autosomal recessive disorder characterized by global developmental delay with delayed walking, impaired intellectual development, and speech delay apparent from infancy or early childhood. Most patients have dysmorphic facial features, often with microcephaly and strabismus, and white matter abnormalities on brain imaging. More variable features may include teeth anomalies, distal joint contractures, spasticity, peripheral neuropathy, and behavioral problems (summary by Sharkia et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1665943">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1667331"><div><strong>Spinocerebellar ataxia, autosomal recessive 23</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1667331</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4750914</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-23 is a neurologic disorder characterized by epilepsy, intellectual disability, and gait ataxia (summary by Gomez-Herreros et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1667331">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1683470"><div><strong>Spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1683470</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4759870</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spinocerebellar ataxia with axonal neuropathy type 1 (SCAN1) is characterized by late-childhood-onset slowly progressive cerebellar ataxia and distal sensorimotor axonal neuropathy. Gaze nystagmus and dysarthria usually develop after the onset of ataxic gait. As the disease advances, pain and touch sensation in the hands and feet become impaired; vibration sense is lost in hands and lower thighs. Individuals with advanced disease develop a steppage gait and pes cavus and eventually become wheelchair dependent. Cognitive dysfunction – present in some – manifests as mild intellectual disability and poor executive function. To date only seven affected individuals have been described from three apparently unrelated consanguineous families (one from Saudi Arabia and two from Oman); therefore, it is likely that the full phenotypic spectrum of this disorder is not yet known.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1683470">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1683634"><div><strong>Coffin-Siris syndrome 10</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1683634</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4760583</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Coffin-Siris syndrome (CSS) is classically characterized by aplasia or hypoplasia of the distal phalanx or nail of the fifth and additional digits, developmental or cognitive delay of varying degree, distinctive facial features, hypotonia, hirsutism/hypertrichosis, and sparse scalp hair. Congenital anomalies can include malformations of the cardiac, gastrointestinal, genitourinary, and/or central nervous systems. Other findings commonly include feeding difficulties, slow growth, ophthalmologic abnormalities, and hearing impairment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1683634">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684324"><div><strong>Autosomal recessive spinocerebellar ataxia 20</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684324</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5190595</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-20 is a neurodevelopmental disorder characterized by severely delayed psychomotor development with poor or absent speech, wide-based or absent gait, coarse facies, and cerebellar atrophy (summary by Thomas et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684324">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1680582"><div><strong>Progressive myoclonic epilepsy type 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1680582</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5190825</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Progressive myoclonic epilepsy-8 (EPM8) is a rare autosomal recessive form of progressive myoclonic epilepsy with phenotypic variability including ataxia and other movement disorders in addition to myoclonus (summary by Godeiro et al., 2018).&#13; For a discussion of genetic heterogeneity of progressive myoclonic epilepsy, see EPM1A (254800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1680582">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1679270"><div><strong>Lactic aciduria due to D-lactic acid</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1679270</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193006</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">D-lactic aciduria is characterized by elevated D-lactate in plasma and urine. Patients show elevated serum uric acid concentrations and low urinary uric acid levels, due to reduced renal clearance of uric acid, and affected adults may experience episodes of gouty arthropathy (Drabkin et al., 2019).&#13; For a discussion of genetic heterogeneity of serum uric acid concentration quantitative trait loci, see UAQTL1 (138900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1679270">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1675328"><div><strong>Global developmental delay with or without impaired intellectual development</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1675328</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193032</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1675328">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1675629"><div><strong>Menke-Hennekam syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1675629</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193034</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Menke-Hennekam syndrome-1 (MKHK1) is a congenital disorder characterized by variable impairment of intellectual development and facial dysmorphisms. Feeding difficulties, autistic behavior, recurrent upper airway infections, hearing impairment, short stature, and microcephaly are also frequently seen. Although mutations in the same gene cause Rubinstein-Taybi syndrome-1 (RSTS1; 180849), patients with MKHK1 do not resemble the striking phenotype of RSTS1.&#13; Genetic Heterogeneity of Menke-Hennekam Syndrome&#13; Menke-Hennekam syndrome-2 (MKHK2; 618333) is caused by heterozygous mutation in exons 30 or 31 of the EP300 gene (602700). Mutation elsewhere in that gene results in RSTS2 (613684).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1675629">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1676668"><div><strong>Menke-Hennekam syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1676668</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193035</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Menke-Hennekam syndrome-2 (MKHK2) is a congenital disorder characterized by variable impairment of intellectual development and facial dysmorphisms. Feeding difficulties, autistic behavior, recurrent upper airway infections, and hearing impairment are also frequently seen. Although mutations in the same gene cause Rubinstein-Taybi syndrome-2 (RSTS2; 613684), patients with MKHK1 do not resemble the striking phenotype of RSTS2.&#13; For a discussion of genetic heterogeneity of Menke-Hennekam syndrome, see MKHK1 (618332).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1676668">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1675423"><div><strong>Intellectual developmental disorder with abnormal behavior, microcephaly, and short stature</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1675423</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193039</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1675423">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1674560"><div><strong>Galloway-Mowat syndrome 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1674560</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193043</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Galloway-Mowat syndrome is a phenotypically heterogeneous disorder characterized by neurodevelopmental defects combined with renal-glomerular disease manifest as nephrotic syndrome and proteinuria. Most patients with GAMOS6 also have growth deficiency with variable microcephaly, and the renal disease may be age-dependent. Additional variable endocrine abnormalities have also been reported (summary by Braun et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of GAMOS, see GAMOS1 (251300).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1674560">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1679283"><div><strong>Galloway-Mowat syndrome 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1679283</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193044</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Galloway-Mowat syndrome-7 (GAMOS7) is an autosomal recessive disorder characterized by developmental delay, microcephaly, and early-onset nephrotic syndrome (summary by Rosti et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of GAMOS, see GAMOS1 (251300).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1679283">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1674123"><div><strong>Microcephaly 25, primary, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1674123</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193046</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1674123">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1679527"><div><strong>Coffin-Siris syndrome 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1679527</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193054</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Coffin-Siris syndrome (CSS) is classically characterized by aplasia or hypoplasia of the distal phalanx or nail of the fifth and additional digits, developmental or cognitive delay of varying degree, distinctive facial features, hypotonia, hirsutism/hypertrichosis, and sparse scalp hair. Congenital anomalies can include malformations of the cardiac, gastrointestinal, genitourinary, and/or central nervous systems. Other findings commonly include feeding difficulties, slow growth, ophthalmologic abnormalities, and hearing impairment.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1679527">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1683864"><div><strong>Myoclonus, familial, 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1683864</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193056</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Familial myoclonus-2 (MYOCL2) is an autosomal dominant neurologic condition characterized by childhood onset of isolated action-induced nonepileptic myoclonus affecting the upper limbs. The disorder is nonprogressive (Wagnon et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1683864">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1683283"><div><strong>Turnpenny-fry syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1683283</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193060</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Turnpenny-Fry syndrome (TPFS) is characterized by developmental delay, impaired intellectual development, impaired growth, and recognizable facial features that include frontal bossing, sparse hair, malar hypoplasia, small palpebral fissures and oral stoma, and dysplastic 'satyr' ears. Other common findings include feeding problems, constipation, and a range of brain, cardiac, vascular, and skeletal malformations (Turnpenny et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1683283">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1679105"><div><strong>Facial dysmorphism, hypertrichosis, epilepsy, intellectual/developmental delay, and gingival overgrowth syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1679105</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193066</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Facial dysmorphism, hypertrichosis, epilepsy, intellectual/developmental delay, and gingival overgrowth syndrome (FHEIG) is a neurodevelopmental disorder characterized by these cardinal features. The distinctive facial gestalt includes bushy eyebrows, long eyelashes, short philtrum, thin and everted upper lip, and prominent upper and lower vermilion. Hypertrichosis is significant and generalized, and gingival overgrowth varies in severity. Developmental delay is variable, and seizures or EEG anomalies are present (Bauer et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1679105">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1679317"><div><strong>Intellectual developmental disorder, autosomal recessive 70</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1679317</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193077</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MRT70 is characterized primarily by impaired intellectual development. Mild facial dysmorphism, febrile seizures, and behavioral abnormalities have been reported in some patients (Maddirevula et al., 2018; Perez et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1679317">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1681181"><div><strong>Neurodevelopmental disorder with impaired speech and hyperkinetic movements</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1681181</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193088</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with impaired speech and hyperkinetic movements (NEDISHM) is an autosomal recessive disorder characterized by global developmental delay apparent in infancy. Most patients have mildly delayed walking, speech and language delay, and a hyperkinetic movement disorder with dystonia, tremor, ataxia, or chorea. Some may develop seizures that tend to abate (summary by Khan et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1681181">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1680026"><div><strong>Spastic ataxia 9, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1680026</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193100</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1680026">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1675664"><div><strong>Neurodevelopmental disorder with or without variable brain abnormalities; NEDBA</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1675664</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193102</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with or without variable brain abnormalities (NEDBA) is characterized by global developmental delay apparent from infancy or early childhood, resulting in mildly delayed walking, variably impaired intellectual development, and poor or absent speech. Additional features may include hypotonia, spasticity, or ataxia. About half of patients have abnormal findings on brain imaging, including cerebral or cerebellar atrophy, loss of white matter volume, thin corpus callosum, and perisylvian polymicrogyria. Seizures are not a prominent finding, and although some patients may have nonspecific dysmorphic facial features, there is no common or consistent gestalt (summary by Platzer et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1675664">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1679263"><div><strong>Developmental delay with or without dysmorphic facies and autism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1679263</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193106</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental delay with or without dysmorphic facies and autism (DEDDFA) is a complex neurodevelopmental disorder apparent from infancy or early childhood and associated with variably impaired intellectual development. Some patients may be severely affected with no speech and inability to walk, whereas others may be able to attend special schools or have normal intellectual function associated with autism spectrum disorder and mild speech delay. Genetic analysis has suggested that the phenotype can be broadly categorized into 2 main groups. Patients with TRRAP mutations affecting residues 1031-1159 have a more severe disorder, often with multisystem involvement, including renal, cardiac, and genitourinary systems, as well as structural brain abnormalities. Patients with mutations outside of that region tend to have a less severe phenotype with a higher incidence of autism and usually no systemic involvement. Patients in both groups usually have somewhat similar dysmorphic facial features, such as upslanting palpebral fissures, hypertelorism, low-set ears, and broad or depressed nasal bridge, although these features are highly variable (summary by Cogne et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1679263">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1673011"><div><strong>Developmental and epileptic encephalopathy, 76</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1673011</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193113</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-76 (DEE76) is an autosomal recessive neurodevelopmental disorder characterized by early-onset, usually refractory, seizures, severely delayed global development, hypotonia, peripheral spasticity, and abnormalities on brain imaging, mainly cerebral atrophy and delayed myelination. Some patients may have additional features, such as scoliosis or microcephaly. The disorder may result in death in childhood (summary by Bell et al., 2019).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1673011">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1678789"><div><strong>Brain abnormalities, neurodegeneration, and dysosteosclerosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1678789</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193117</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Brain abnormalities, neurodegeneration, and dysosteosclerosis (BANDDOS) is an autosomal recessive disorder characterized by brain abnormalities, progressive neurologic deterioration, and sclerotic bone dysplasia similar to dysosteosclerosis (DOS). The age at onset is highly variable: some patients may present in infancy with hydrocephalus, global developmental delay, and hypotonia, whereas others may have onset of symptoms in the late teens or early twenties after normal development. Neurologic features include loss of previous motor and language skills, cognitive impairment, spasticity, and focal seizures. Brain imaging shows periventricular white matter abnormalities and calcifications, large cisterna magna or Dandy-Walker malformation, and sometimes agenesis of the corpus callosum (summary by Guo et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1678789">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1676426"><div><strong>Generalized epilepsy with febrile seizures plus, type 10</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1676426</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193120</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Generalized epilepsy with febrile seizures plus-10 (GEFSP10) is a seizure disorder characterized by variable types of seizures, including absence, tonic-clonic, febrile, focal, and eyelid myoclonia. Onset tends to be in the first months or years of life, and the seizure type may evolve or even eventually remit. Some patients may have impaired intellectual development or autistic features. Brain imaging is usually normal (summary by Marini et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of GEFS+, see 604233.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1676426">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1674629"><div><strong>Congenital hypotonia, epilepsy, developmental delay, and digital anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1674629</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193125</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ATN1-related neurodevelopmental disorder (ATN1-NDD) is characterized by developmental delay / intellectual disability. Other neurologic findings can include infantile hypotonia, brain malformations, epilepsy, cortical visual impairment, and hearing loss. Feeding difficulties, present in some individuals, may require gastrostomy support when severe; similarly, respiratory issues, present in some, may require respiratory support after the neonatal period. Distinctive facial features and hand and foot differences are common. Other variable findings can include cardiac malformations and congenital anomalies of the kidney and urinary tract (CAKUT). To date, 18 individuals with ATN1-NDD have been identified.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1674629">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1673448"><div><strong>Intellectual developmental disorder, autosomal recessive 71</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1673448</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193133</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1673448">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1682428"><div><strong>Ichthyotic keratoderma, spasticity, hypomyelination, and dysmorphic facial features</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1682428</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5193147</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ichthyotic keratoderma, spasticity, hypomyelination, and dysmorphic features (IKSHD) is characterized by epidermal hyperproliferation and increased keratinization, resulting in ichthyosis; hypomyelination of central white matter, causing spastic paraplegia and central nystagmus; and optic atrophy, resulting in reduction of peripheral vision and visual acuity (Mueller et al., 2019). In addition, patients exhibit mild facial dysmorphism (Kutkowska-Kazmierczak et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1682428">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684753"><div><strong>Rothmund-Thomson syndrome type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684753</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5203410</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rothmund-Thomson syndrome (RTS) is characterized by a rash that progresses to poikiloderma; sparse hair, eyelashes, and/or eyebrows; small size; skeletal and dental abnormalities; juvenile cataracts; and an increased risk for cancer, especially osteosarcoma. A variety of benign and malignant hematologic abnormalities have been reported in affected individuals. The rash of RTS typically develops between ages three and six months (occasionally as late as age two years) as erythema, swelling, and blistering on the face, subsequently spreading to the buttocks and extremities. The rash evolves over months to years into the chronic pattern of reticulated hypo- and hyperpigmentation, telangiectasias, and punctate atrophy (collectively known as poikiloderma) that persist throughout life. Hyperkeratotic lesions occur in approximately one third of individuals. Skeletal abnormalities can include radial ray defects, ulnar defects, absent or hypoplastic patella, and osteopenia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684753">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1695950"><div><strong>Congenital cerebellar hypoplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1695950</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231391</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebellar hypoplasia/atrophy, epilepsy, and global developmental delay is an autosomal recessive neurodevelopmental disorder characterized by infantile onset of hypotonia and developmental delay with subsequent impaired intellectual development and severe speech delay. In childhood, affected individuals show delayed walking and develop epilepsy that is usually controlled by medication. Brain imaging shows cerebellar hypoplasia/atrophy (summary by Wang et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1695950">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684742"><div><strong>Congenital disorder of glycosylation, type ICC</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684742</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231393</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684742">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684820"><div><strong>Basilicata-Akhtar syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684820</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231394</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Basilicata-Akhtar syndrome (MRXSBA) is characterized by global developmental delay apparent from infancy, feeding difficulties, hypotonia, and poor or absent speech. Most patients are able to walk, although they may have an unsteady gait or spasticity. Additional findings include dysmorphic facial features and mild distal skeletal anomalies. Males and females are similarly affected (summary by Basilicata et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684820">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684774"><div><strong>Neurodevelopmental disorder with visual defects and brain anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684774</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231404</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with visual defects and brain anomalies (NEDVIBA) is characterized by global developmental delay with impaired intellectual development and speech delay, variable visual defects, including retinitis pigmentosa and optic atrophy, hypotonia or hypertonia, and variable structural brain abnormalities. Other nonspecific features may be found (summary by Okur et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684774">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684871"><div><strong>Neurodevelopmental disorder with ataxia, hypotonia, and microcephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684871</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231413</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684871">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684801"><div><strong>Snijders blok-fisher syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684801</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231424</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Snijders Blok-Fisher syndrome (SNIBFIS) is a neurodevelopmental disorder characterized by global developmental delay, hypotonia, variable impaired intellectual development, and specifically impaired speech and language acquisition. Patients achieve independent ambulation and most have mildly to moderately impaired cognition with autistic features, although a few may develop seizures and have a more severe phenotype. Dysmorphic features include abnormal, cupped, or prominent ears and ocular anomalies. Mutations usually occur de novo, although 1 family with autosomal dominant inheritance has been reported (summary by Snijders Blok et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684801">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684841"><div><strong>Neurooculocardiogenitourinary syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684841</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231443</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurooculocardiogenitourinary syndrome (NOCGUS) is a multisystem disorder characterized by poor growth and anomalies of the ocular, craniofacial, neurologic, cardiovascular, genitourinary, skeletal, and gastrointestinal systems. Lethality before 2 years of age has been observed (Reis et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684841">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684804"><div><strong>Intellectual developmental disorder with impaired language and dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684804</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231444</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder with impaired language and dysmorphic facies (IDDILF) is an autosomal dominant disorder characterized by global developmental delay apparent from infancy, impaired language development, and dysmorphic facial features, including hypertelorism, epicanthal folds, and abnormal palpebral fissures. Some patients may have additional findings, including feeding difficulties, mild cardiac or genitourinary defects, and distal skeletal anomalies (summary by Balak et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684804">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684740"><div><strong>Zimmermann-laband syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684740</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231447</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Zimmermann-Laband syndrome-3 (ZLS3) is characterized by developmental delay, intellectual disability, coarse face, gingival hyperplasia, and nail hypoplasia/aplasia (Bauer et al., 2019).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Zimmermann-Laband syndrome, see ZLS1 (135500).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684740">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684792"><div><strong>Neurodevelopmental disorder with dysmorphic facies and distal skeletal anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684792</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231448</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with dysmorphic facies and distal skeletal anomalies (NEDDFSA) is a global neurodevelopmental disorder with highly variable features. Patients often show poor feeding, poor overall growth, and hypotonia from early infancy, followed by mildly delayed motor development, poor language acquisition, and behavioral abnormalities. Intellectual development varies from severe with absent speech to mild with the ability to attend special schools. Common features include dysmorphic facial features with notable eye anomalies, joint hypermobility, and mild skeletal anomalies of the hands and feet (summary by Carapito et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684792">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684848"><div><strong>Intellectual developmental disorder with speech delay, autism, and dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684848</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231456</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder with speech delay, autism, and dysmorphic facies (IDDSADF) is a developmental disorder with the most highly consistent features of hypotonia, relatively small stature, developmental delay, behavioral problems, and impaired intellectual development. Variable dysmorphic facial features are present, without a consistent pattern. A predisposition to moyamoya angiopathy has been observed (Martin et al., 2019, Pinard et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684848">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684757"><div><strong>Neurodevelopmental disorder with nonspecific brain abnormalities and with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684757</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231470</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with nonspecific brain abnormalities is a highly variable syndrome characterized by impaired intellectual development and behavioral abnormalities associated with structural changes on brain imaging. Some patients have seizures, hypotonia, and scoliosis/kyphosis. Cognitive function ranges from severely impaired to the ability to attend schools with special assistance (summary by Fischer-Zirnsak et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684757">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684663"><div><strong>Neurodevelopmental disorder with behavioral abnormalities, absent speech, and hypotonia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684663</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231471</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with behavioral abnormalities, absent speech, and hypotonia (NEDBASH) is an autosomal recessive disorder characterized by severely impaired intellectual and motor development, axial and peripheral hypotonia usually with inability to walk, and significant behavioral abnormalities consistent with autism spectrum disorder and reminiscent of Rett syndrome (RTT; 312750), such as poor communication, stereotypic or repetitive behaviors, hand-wringing, bruxism, and sleep disturbances. Other features include poor overall growth, and joint hypermobility. Rare features include seizures, dystonia, spasticity, and nonspecific brain abnormalities (summary by Abu-Libdeh et al., 2019 and Dias et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684663">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684850"><div><strong>Intellectual developmental disorder with behavioral abnormalities and craniofacial dysmorphism with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684850</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231476</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Patients with intellectual developmental disorder with behavioral abnormalities and craniofacial dysmorphism with or without seizures (IDDBCS) have impaired intellectual development or developmental delay of varying severity with impaired motor skills and language delay. Macrocephaly, obesity, and overgrowth are frequently seen. Approximately half of patients experience seizures, and neurobehavioral disorders including autism are usually present (Hamanaka et al., 2019; Kim et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684850">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684719"><div><strong>Ectodermal dysplasia with facial dysmorphism and acral, ocular, and brain anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684719</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231477</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">EDFAOB is characterized by linear hypopigmentation and craniofacial asymmetry in association with ocular, dental, and acral anomalies. Brain imaging has revealed some abnormalities, including diffuse cystic leukoencephalopathy and mildly enlarged lateral ventricles, but patients show no intellectual or neurologic impairment (Vabres et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684719">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684718"><div><strong>Poirier-Bienvenu neurodevelopmental syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684718</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231482</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CSNK2B-related neurodevelopmental disorder (CSNK2B-NDD), reported in more than 80 individuals to date, is characterized in most individuals by developmental delay (DD) / intellectual disability (ID) and seizures. Most young children have delays in speech and motor development. The majority of individuals older than age five years at the time of evaluation have ID ranging from borderline/mild to severe/profound. Seizures, present in most individuals, range in type and severity. While many individuals have pharmaco-responsive epilepsy, others have severe epilepsy with recurrent episodes of refractory status epilepticus. Less consistent findings include ataxia or impaired coordination, generalized hypotonia of infancy, neurobehavioral/psychiatric manifestations, and digital anomalies.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684718">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684689"><div><strong>Neuromuscular disease and ocular or auditory anomalies with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684689</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231483</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neuromuscular oculoauditory syndrome (NMOAS) is a neurodevelopmental disorder with variable features including hypotonia, nonspecific developmental delay, and ear deformity or sensorineural deafness. Features may be reminiscent of Aicardi syndrome (see 304050), with chorioretinal lacunae, infantile spasms, and agenesis of the corpus callosum (Paine et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684689">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684861"><div><strong>Structural brain anomalies with impaired intellectual development and craniosynostosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684861</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231485</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Patients with BAIDCS have small head circumference with abnormalities in brain anatomy including variable deficiency of the corpus callosum (including agenesis), abnormal conformation of the ventricles and posterior fossa, hypoplasia of both cerebellar hemispheres, colpocephaly, and partial rhombencephalosynapsis (absence of the cerebellar vermis with fusion of the cerebellar hemispheres). Intellectual development is moderately to severely impaired. Bicoronal synostosis, scoliosis, and tethered cord may be present (Twigg et al., 2015; Vandervore et al., 2018).&#13; Craniosynostosis-6 (CRS6; 616602) is an allelic disorder.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684861">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684709"><div><strong>Intellectual developmental disorder with hypotonia and behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684709</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231489</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder with hypotonia and behavioral abnormalities (IDDHBA) is a neurodevelopmental disorder characterized by onset of hypotonia and variably impaired global developmental delay in infancy. Affected individuals tend to have learning disability, usually requiring special schooling, as well as behavioral abnormalities, such as autistic features and attention deficit-hyperactivity disorder (ADHD). Additional more variable features may include nonspecific dysmorphic facial features, congenital heart defects, visual or ocular movement anomalies, and poor feeding and/or gastroesophageal reflux (summary by Calpena et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684709">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684874"><div><strong>Neurodevelopmental disorder with hypotonia and autistic features with or without hyperkinetic movements</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684874</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231491</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia and autistic features with or without hyperkinetic movements (NEDHAHM) is characterized by axial hypotonia apparent from birth, global developmental delay with impaired intellectual development and poor or absent language acquisition, and behavioral abnormalities, including autistic features, poor social interaction, and hang-wringing. Most patients have childhood-onset seizures that are usually responsive to medication, and a subset of patients develop cortical visual impairment and involuntary hyperkinetic movements, including chorea and dystonia. Some of the features are reminiscent of Rett syndrome (RTT; 312750) (summary by Salpietro et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684874">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684686"><div><strong>Catifa syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684686</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231492</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CATIFA syndrome is characterized by global developmental delay and impaired intellectual development ranging from mild to severe, with most patients exhibiting attention-deficit hyperactivity disorder (ADHD). Patients show an elongated face with long philtrum and small ears. Ocular anomalies include congenital cataracts, strabismus, and amblyopia, which may be associated with reduced vision; other anomalies include cleft lip and/or palate and misaligned teeth with extensive caries (Unlu et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684686">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684786"><div><strong>Joubert syndrome 36</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684786</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231493</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Joubert syndrome-36 (JBTS36) is an autosomal recessive ciliopathy characterized by global developmental delay, ocular movement abnormalities, and mesoaxial polydactyly. Brain imaging may be normal or show the classic 'molar tooth sign.' There is some phenotypic similarity to and overlap with orofaciodigital syndrome VI (OFD6; 277170) (summary by Shaheen et al., 2019).&#13; For a discussion of genetic heterogeneity of Joubert syndrome, see JBTS1 (213300).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684786">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684702"><div><strong>Intellectual developmental disorder 60 with seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684702</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231497</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant intellectual developmental disorder-60 with seizures is characterized by global developmental delay apparent in infancy, followed by onset of seizures in the first years of life. Patients have delayed walking, an ataxic gait, and moderately to severely impaired intellectual development with poor speech (summary by Helbig et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684702">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1720006"><div><strong>ALDH18A1-related de Barsy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1720006</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5234852</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">De Barsy syndrome, or autosomal recessive cutis laxa type III (ARCL3), is characterized by cutis laxa, a progeria-like appearance, and ophthalmologic abnormalities (summary by Kivuva et al., 2008).&#13; For a phenotypic description and a discussion of genetic heterogeneity of autosomal recessive cutis laxa, see 219100.&#13; Genetic Heterogeneity of de Barsy Syndrome&#13; Also see ARCL3B (614438), caused by mutation in the PYCR1 gene (179035) on chromosome 17q25.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1720006">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1713491"><div><strong>Kostmann syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1713491</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5235141</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Severe congenital neutropenia-3 is an autosomal recessive bone marrow failure disorder characterized by low numbers of neutrophils, increased susceptibility to bacterial and fungal infections, and increased risk of developing myelodysplastic syndrome or acute myeloid leukemia. In addition, patients with HAX1 mutations affecting both isoform A and B of the gene develop neurologic abnormalities (summary by Boztug et al., 2010).&#13; The Swedish physician Rolf Kostmann (1956) described an autosomal recessive hematologic disorder, termed infantile agranulocytosis, with severe neutropenia with an absolute neutrophil count below 0.5 x 10(9)/l and early onset of severe bacterial infections. The disorder was later termed Kostmann syndrome (Skokowa et al., 2007). Lekstrom-Himes and Gallin (2000) discussed severe congenital neutropenia in a review of immunodeficiencies caused by defects in phagocytes.&#13; In addition to Kostmann agranulocytosis, recessively inherited neutropenic syndromes include congenital neutropenia with eosinophilia (257100), Chediak-Higashi syndrome (214500), and Fanconi pancytopenic syndrome (see 227650).&#13; For a phenotypic description and a discussion of genetic heterogeneity of severe congenital neutropenia, see SCN1 (202700).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1713491">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1717402"><div><strong>Coffin-Siris syndrome 11</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1717402</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5241442</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Coffin-Siris syndrome-11 (CSS11) is a syndromic neurodevelopmental disorder characterized by global developmental delay and impaired intellectual development associated with hypotonia, feeding difficulties, and variable dysmorphic features. Most patients have distal anomalies, such as small hands and feet and hypoplastic fifth toenails (summary by Nixon et al., 2019).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Coffin-Siris syndrome, see CSS1 (135900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1717402">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1715418"><div><strong>Intellectual disability, X-linked 102</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1715418</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5393299</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">DDX3X-related neurodevelopmental disorder (DDX3X-NDD) typically occurs in females and very rarely in males. All affected individuals reported to date have developmental delay / intellectual disability ranging from mild to severe; about 50% of affected girls remain nonverbal after age five years. Hypotonia, a common finding, can be associated with feeding difficulty in infancy. Behavioral issues can include autism spectrum disorder, attention-deficit/hyperactivity disorder and hyperactivity, self-injurious behavior, poor impulse control, and aggression. Other findings can include seizures, movement disorders (dyskinesia, spasticity, abnormal gait), vision and hearing impairment, congenital heart defects, respiratory difficulties, joint laxity, and scoliosis. Neuroblastoma has been observed in three individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1715418">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1714826"><div><strong>Holoprosencephaly 13, X-linked</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1714826</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5393308</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked holoprosencephaly-13 (HPE13) is a neurologic disorder characterized by midline developmental defects that mainly affect the brain and craniofacial structure. The severity and manifestations are variable: some patients may have full alobar HPE with cyclopia, whereas others have semilobar HPE or septooptic dysplasia. Dysmorphic features include microcephaly, hypotelorism, low-set ears, micrognathia, and cleft lip/palate. Patients with a more severe phenotype may die in the newborn period, whereas those with a less severe phenotype show global developmental delay. Additional variable features include congenital heart defects and vertebral anomalies. Phenotypic variability may be related to the type of mutation, X-inactivation status, and possible incomplete penetrance. The STAG2 protein is part of the multiprotein cohesin complex involved in chromatid cohesion during DNA replication and transcriptional regulation; HPE13 can thus be classified as a 'cohesinopathy' (summary by Kruszka et al., 2019).&#13; For a discussion of genetic heterogeneity of holoprosencephaly, see HPE1 (236100).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1714826">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1714250"><div><strong>Intellectual disability, autosomal dominant 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1714250</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5393830</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NESCAV syndrome (NESCAVS) is a neurodegenerative disorder characterized by onset of features in infancy or early childhood. Affected individuals show global developmental delay with delayed walking or difficulty walking due to progressive spasticity mainly affecting the lower limbs and often leading to loss of independent ambulation. There is variably impaired intellectual development, speech delay, and learning disabilities and/or behavioral abnormalities. Additional features may include cortical visual impairment, often associated with optic atrophy, axonal peripheral neuropathy, seizures, dysautonomia, ataxia, and dystonia. Brain imaging often shows progressive cerebellar atrophy and thin corpus callosum. Some patients may show developmental regression, particularly of motor skills. The phenotype and presentation are highly variable (summary by Nemani et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1714250">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1710411"><div><strong>Spastic paraplegia 82, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1710411</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394037</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spastic paraplegia-82 (SPG82) is a progressive neurologic disorder characterized by global developmental delay apparent from infancy, significant motor impairment, and progressive spasticity mainly affecting the lower limbs. Some patients never achieve walking, whereas others lose the ability to walk or walk with an unsteady gait. Additional features include variably impaired intellectual development with language difficulties, ocular anomalies, such as nystagmus and visual impairment, and seizures. Brain imaging shows progressive cerebral and cerebellar atrophy, as well as white matter hyperintensities. Based on the additional abnormalities, the disorder can be classified as a type of complicated SPG (summary by Vaz et al., 2019).&#13; For a discussion of genetic heterogeneity of autosomal recessive spastic paraplegia, see SPG5A (270800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1710411">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1710973"><div><strong>CEBALID syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1710973</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394044</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Individuals with MN1 C-terminal truncation (MCTT) syndrome have mild-to-moderate intellectual disability, severe expressive language delay, dysmorphic facial features (midface hypoplasia, downslanting palpebral fissures, hypertelorism, exophthalmia, short upturned nose, and small low-set ears), and distinctive findings on brain imaging (including perisylvian polymicrogyria and atypical rhombencephalosynapsis). Mild-to-moderate prelingual hearing loss (usually bilateral, conductive, and/or sensorineural) is common. Generalized seizures (observed in the minority of individuals) are responsive to anti-seizure medication. There is an increased risk for craniosynostosis and, thus, increased intracranial pressure. To date, 25 individuals with MCTT syndrome have been identified.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1710973">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1711007"><div><strong>Imagawa-Matsumoto syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1711007</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394073</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Imagawa-Matsumoto syndrome (IMMAS) is characterized by variable pre- and postnatal overgrowth; dysmorphic features including postnatal macrocephaly, prominent forehead, round face, hypertelorism, downslanting palpebral fissures, and low and broad nasal bridge; and variable musculoskeletal abnormalities. Developmental delay and impaired intellectual development are common, whereas abnormalities of cerebral imaging are uncommon but may be significant. Some patients exhibit genitourinary abnormalities, and respiratory issues have been reported (Cyrus et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1711007">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1712636"><div><strong>Intellectual developmental disorder 62</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1712636</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394083</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">DLG4-related synaptopathy is characterized by developmental delay, intellectual disability (most commonly in the mild-to-moderate range), and autism spectrum disorder. About half of affected individuals have epilepsy. Regression in motor development and/or language has been reported in about 40% of affected individuals. Other neurologic findings can include hypotonia, movement disorder (most commonly stereotypies and ataxia), dystonia, tremor, and migraine headaches. Sleep disturbance is common, with sleep onset and/or sleep maintenance difficulties being frequently reported. Strabismus is the most common ocular finding followed by hyperopia, nystagmus, and cortical blindness. Vomiting is observed in a number of individuals and can be triggered by seizures, motion sickness, or fatigue. Joint laxity is a relatively common finding (36.9%), and scoliosis is noted in 20% of individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1712636">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1711894"><div><strong>Beck-Fahrner syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1711894</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394097</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">TET3-related Beck-Fahrner syndrome (TET3-BEFAHRS) is a condition within the spectrum of mendelian disorders of the epigenetic machinery (MDEMs) or chromatinopathies. Clinical features typically include intellectual disability / developmental delay ranging from mild to severe affecting both motor and language skills. Most affected individuals are verbal and ambulatory, with most walking by age 15-36 months. Hypotonia in infancy and childhood can exacerbate motor and expressive speech delay and, in some cases, cause feeding difficulties that require nasogastric or gastrostomy tube feeding. Some affected individuals display movement disorders. About one third of affected individuals have epilepsy. Other neurobehavioral features can include autism, anxiety, and attention-deficit/hyperactivity disorder. Strabismus and refractive errors are found in about half of affected individuals. Both conductive and sensorineural hearing loss have been observed. Approximately half of individuals exhibit typical growth and half exhibit growth abnormalities, with overgrowth being more common than undergrowth and macrocephaly being the most common manifestation of altered growth. While many affected individuals have dysmorphic features, these are typically nonspecific. Congenital heart defects, brain malformations, and genitourinary anomalies are less common findings.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1711894">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1711370"><div><strong>Intellectual developmental disorder with poor growth and with or without seizures or ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1711370</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394135</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder with poor growth and with or without seizures or ataxia (IDPOGSA) is an autosomal recessive neurologic disorder characterized by global developmental delay apparent from infancy, hypotonia, and poor overall growth, sometimes with borderline microcephaly. The phenotype is highly variable: some patients may show ataxia and some may have seizures (summary by Hu et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1711370">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1716581"><div><strong>Intellectual developmental disorder, autosomal dominant 63, with macrocephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1716581</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394205</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">TRIO-related neurodevelopmental disorder (TRIO-NDD) is characterized by two phenotypes: TRIO-NDD due to gain-of-function variants and TRIO-NDD due to loss-of-function variants. TRIO-NDD due to gain-of-function variants within the spectrin repeat domain is characterized by moderate-to-severe developmental delay, intellectual disability, macrocephaly (or relative macrocephaly), neurobehavioral manifestations (poor attention, stereotypies, obsessive-compulsive behavior, aggressive behavior, and autism spectrum disorder), and early feeding difficulties with poor weight gain and growth deficiency. Seizures, constipation, scoliosis, dental abnormalities, and cardiac anomalies are also reported. TRIO-NDD due to loss-of-function variants is characterized by mild-to-moderate developmental delay and intellectual disability, microcephaly, neurobehavioral manifestations (poor attention, aggressive behavior, autism spectrum disorder, obsessive-compulsive traits, and stereotypies), early feeding difficulties with poor weight gain, dental abnormalities, and digit anomalies, including 2-3 toe syndactyly in some individuals. Seizures, constipation, scoliosis, and cardiac anomalies are also reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1716581">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1719418"><div><strong>Neurodevelopmental disorder with microcephaly and dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1719418</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394218</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nabais Sa-de Vries syndrome type 1 (NSDVS1) is characterized by global developmental delay apparent from infancy, variable behavioral abnormalities, microcephaly, and dysmorphic facial features, including round face, small palpebral fissures, highly arched eyebrows, and short nose. The severity is variable (summary by Nabais Sa et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1719418">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1714169"><div><strong>Neurodevelopmental disorder with relative macrocephaly and with or without cardiac or endocrine anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1714169</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394221</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nabais Sa-de Vries syndrome type 2 (NSDVS2) is characterized by global developmental delay apparent from birth and distinctive dysmorphic facial features. Most patients have additional anomalies, including congenital heart defects, sleep disturbances, hypotonia, and variable endocrine abnormalities, such as hypothyroidism (summary by Nabais Sa et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1714169">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1713432"><div><strong>Alopecia-intellectual disability syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1713432</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394241</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Alopecia-intellectual disability syndrome-4 (APMR4) is characterized by alopecia universalis, scaly skin, and psychomotor retardation of varying degrees (Besnard et al., 2019).&#13; For a discussion of genetic heterogeneity of alopecia-intellectual disability syndrome, see APMR1 (203650).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1713432">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1714920"><div><strong>Diets-Jongmans syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1714920</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394263</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Diets-Jongmans syndrome (DIJOS) is an autosomal dominant disorder characterized by mild to moderately impaired intellectual development with a recognizable facial gestalt (summary by Diets et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1714920">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1714862"><div><strong>Neurodevelopmental disorder with or without autistic features and/or structural brain abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1714862</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394311</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with or without autistic features and/or structural brain abnormalities (NEDASB) is an early-onset neurologic disorder characterized by global developmental delay, poor or absent speech and language development, and behavioral abnormalities reminiscent of autism spectrum disorder (ASD; 209850) or Angelman syndrome (AS; 105830). Additional features may include poor overall growth with small head circumference, axial hypotonia, spasticity, and seizures. Some patients have abnormal findings on brain imaging, including cerebral atrophy, cerebellar atrophy, and/or thin corpus callosum (summary by Mattioli et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1714862">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1710110"><div><strong>Neurodevelopmental disorder with hypotonia, microcephaly, and seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1710110</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394312</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia, microcephaly, and seizures (NEDHYMS) is an autosomal recessive disorder characterized by global developmental delay with axial hypotonia, inability to sit or walk, and severely impaired intellectual development with absent language. Most patients develop early-onset intractable seizures that prevent normal development. Additional features include feeding difficulties with poor overall growth and microcephaly. Some patients may have spastic quadriplegia, poor eye contact due to cortical blindness, variable dysmorphic features, and nonspecific abnormalities on brain imaging (summary by Tan et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1710110">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1715748"><div><strong>Nizon-Isidor syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1715748</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394350</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nizon-Isidor syndrome (NIZIDS) is a neurodevelopmental disorder characterized by global developmental delay, mildly delayed walking, poor speech and language, variably impaired intellectual development, and behavioral abnormalities, such as autistic features or attention deficit-hyperactivity disorder (ADHD). Some patients may have additional features, including nonspecific facial dysmorphism, gastrointestinal difficulties, distal hand anomalies, and thin corpus callosum on brain imaging (summary by Nizon et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1715748">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1719546"><div><strong>Lissencephaly 10</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1719546</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394354</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Lissencephaly-10 (LIS10) is a neurologic disorder characterized by variably delayed development with mildly to moderately impaired intellectual development and language delay, as well as seizures, which are often intractable. There is a spectrum of severity, with some patients having normal early development and only borderline to mild cognitive impairment. Brain imaging shows features consistent with neuronal migration defects, including posterior-predominant lissencephaly, pachygyria, agyria, and subcortical band heterotopia (summary by Tsai et al., 2020).&#13; For a general description and a discussion of genetic heterogeneity of lissencephaly, see LIS1 (607432).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1719546">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1709796"><div><strong>Liberfarb syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1709796</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394404</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Liberfarb syndrome (LIBF) is a progressive disorder involving connective tissue, bone, retina, ear, and brain. Patients exhibit severe short stature and scoliosis with thoracic kyphosis and lumbar hyperlordosis. Severe joint laxity results in dislocations of elbows, hips, and knees. Eye findings are consistent with early-onset retinal degeneration, and there is moderate to severe early-onset hearing loss. Microcephaly is apparent by school age, and patients exhibit developmental delay and intellectual deficits (Peter et al., 2019). Clinical variability has been observed, with some patients presenting differences in the severity and location of skeletal dysplasia involvement as well as variation in other features of the syndrome (Girisha et al., 2019; Zhao et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1709796">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1715081"><div><strong>Intellectual developmental disorder with autistic features and language delay, with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1715081</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394447</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder with autistic features and language delay, with or without seizures (IDDALDS), is a neurodevelopmental disorder characterized by global developmental delay, variable intellectual disability, impaired speech development, and behavioral abnormalities, most commonly on the autism spectrum. About half of patients develop seizures; brain imaging is typically normal. Additional features are highly variable, but may include chronic constipation, walking difficulties, and dysmorphic facial features (summary by Guo et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1715081">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1712714"><div><strong>Neurodevelopmental, jaw, eye, and digital syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1712714</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394477</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental, jaw, eye, and digital syndrome (NEDJED) is characterized by phenotypic diversity, with patients exhibiting a range of overlapping phenotypes. Most patients show developmental delay ranging from mild to severe, and often have behavioral disorders as well. Brain imaging shows hypoplasia of the corpus callosum, prominence of lateral ventricles, and/or white matter abnormalities. Many patients have retro- or micrognathia, but mild prognathism has also been observed. Ocular anomalies are variably present, and may be severe and complex; however, some patients show only mild myopia. Abnormalities of fingers and toes include brachydactyly, clinodactyly, syndactyly, and contractures; polydactyly is rarely seen (Holt et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1712714">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1719688"><div><strong>Developmental and epileptic encephalopathy, 87</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1719688</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394501</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-87 (DEE87) is a neurologic disorder characterized by global developmental delay, hypotonia, and onset of frequent refractory seizures or infantile spasms between 6 and 15 months of age. Affected individuals have severely impaired motor and cognitive development with little or absent speech and poor visual tracking. More variable features include facial dysmorphisms, joint laxity, and nonspecific brain imaging findings (summary by Chung et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1719688">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1708389"><div><strong>Neurodevelopmental disorder with language impairment and behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1708389</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394502</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The clinical phenotype of GRIA2-related neurodevelopmental disorder (GRIA2-NDD) comprises global developmental delay, cognitive and language impairment with poor or absent speech in almost all individuals, and varying combinations of tone abnormalities at birth, early-onset developmental and epileptic encephalopathy, complex movement disorders with or without epilepsy, and neurobehavioral and/or psychiatric disorders. Some affected individuals have normal early development followed by variable regression with impaired social and/or language skills. About half of individuals are nonverbal. Several individuals are unable to walk, and several have gait abnormalities, including gait dyspraxia and ataxia. Nearly half of affected children develop seizures including early-onset tonic-clonic, focal, and focal to bilateral tonic-clonic seizures, most of which are refractory to treatment. Some children present with movement disorders, including chorea, dystonia, and dyskinesia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1708389">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1718470"><div><strong>Periventricular nodular heterotopia 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1718470</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394503</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Periventricular nodular heterotopia-9 (PVNH9) is an autosomal dominant neurologic disorder characterized as a malformation of cortical development. Anterior predominant PVNH, thin corpus callosum, and decreased white matter volume are found on brain imaging, but the clinical effects are variable. Most patients have impaired intellectual development and cognitive defects associated with low IQ (range 50 to 80), learning disabilities, and behavior abnormalities. Some patients develop seizures that tend to have a focal origin. However, some mutation carriers may be less severely affected with borderline or even normal IQ, suggesting incomplete penetrance of the phenotype (summary by Heinzen et al., 2018, Walters et al., 2018).&#13; For a discussion of genetic heterogeneity of periventricular nodular heterotopia, see 300049.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1718470">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1708579"><div><strong>Neurodevelopmental disorder with seizures, hypotonia, and brain imaging abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1708579</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394517</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with seizures, hypotonia, and brain imaging abnormalities (NEDSHBA) is an autosomal recessive neurodevelopmental disorder characterized by global developmental delay, severe to profound intellectual impairment, early-onset refractory seizures, hypotonia, failure to thrive, and progressive microcephaly. Brain imaging shows cerebral atrophy, thin corpus callosum, and myelination defects. Death in childhood may occur (summary by Marafi et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1708579">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1718475"><div><strong>Agenesis of corpus callosum, cardiac, ocular, and genital syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1718475</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394523</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Agenesis of corpus callosum, cardiac, ocular, and genital syndrome (ACOGS) is a syndromic neurodevelopmental disorder characterized by global developmental delay and/or intellectual disability, corpus callosum agenesis or hypoplasia, craniofacial dysmorphisms, and ocular, cardiac, and genital anomalies (Accogli et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1718475">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1712280"><div><strong>Treacher Collins syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1712280</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5394546</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Treacher Collins syndrome (TCS) is characterized by lower eyelid abnormalities, malar hypoplasia, downslanted palpebral fissures, and micro- or retrognathia due to symmetric hypoplasia of the zygomatic bones, maxilla, and mandible. External ear anomalies include absent, small, malformed, and/or posteriorly rotated ears and atresia or stenosis of the external auditory canals. About 40%-50% of individuals have conductive hearing loss attributed most commonly to malformation of the ossicles and hypoplasia of the middle ear cavities. Inner ear structures tend to be normal. Significant respiratory and feeding difficulties can be present in infancy. Other, less common abnormalities include cleft palate and unilateral or bilateral choanal stenosis or atresia. Typically, intellect is normal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1712280">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1768809"><div><strong>FG syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1768809</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5399762</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MED12-related disorders include the phenotypes of FG syndrome type 1 (FGS1), Lujan syndrome (LS), X-linked Ohdo syndrome (XLOS), Hardikar syndrome (HS), and nonspecific intellectual disability (NSID). FGS1 and LS share the clinical findings of cognitive impairment, hypotonia, and abnormalities of the corpus callosum. FGS1 is further characterized by absolute or relative macrocephaly, tall forehead, downslanted palpebral fissures, small and simple ears, constipation and/or anal anomalies, broad thumbs and halluces, and characteristic behavior. LS is further characterized by large head, tall thin body habitus, long thin face, prominent nasal bridge, high narrow palate, and short philtrum. Carrier females in families with FGS1 and LS are typically unaffected. XLOS is characterized by intellectual disability, blepharophimosis, and facial coarsening. HS has been described in females with cleft lip and/or cleft palate, biliary and liver anomalies, intestinal malrotation, pigmentary retinopathy, and coarctation of the aorta. Developmental and cognitive concerns have not been reported in females with HS. Pathogenic variants in MED12 have been reported in an increasing number of males and females with NSID, with affected individuals often having clinical features identified in other MED12-related disorders.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1768809">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1727901"><div><strong>Facioscapulohumeral muscular dystrophy 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1727901</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5399970</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Facioscapulohumeral muscular dystrophy (FSHD) typically presents with weakness of the facial muscles, the stabilizers of the scapula, or the dorsiflexors of the foot. Severity is highly variable. Weakness is slowly progressive and approximately 20% of affected individuals eventually require a wheelchair. Life expectancy is not shortened.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1727901">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1746744"><div><strong>IFAP syndrome 1, with or without BRESHECK syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1746744</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5399971</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The IFAP/BRESHECK syndrome is an X-linked multiple congenital anomaly disorder with variable severity. The classic triad, which defines IFAP, is ichthyosis follicularis, atrichia, and photophobia. Some patients have additional features, including mental retardation, brain anomalies, Hirschsprung disease, corneal opacifications, kidney dysplasia, cryptorchidism, cleft palate, and skeletal malformations, particularly of the vertebrae, which constitutes BRESHECK syndrome (summary by Naiki et al., 2012).&#13; Genetic Heterogeneity of IFAP Syndrome&#13; IFAP syndrome-2 (IFAP2; 619016) is caused by heterozygous mutation in the SREBF1 gene (184756) on chromosome 17p11.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1746744">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1770070"><div><strong>Autosomal recessive Robinow syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1770070</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5399974</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ROR2-related Robinow syndrome is characterized by distinctive craniofacial features, skeletal abnormalities, and other anomalies. Craniofacial features include macrocephaly, broad prominent forehead, low-set ears, ocular hypertelorism, prominent eyes, midface hypoplasia, short upturned nose with depressed nasal bridge and flared nostrils, large and triangular mouth with exposed incisors and upper gums, gum hypertrophy, misaligned teeth, ankyloglossia, and micrognathia. Skeletal abnormalities include short stature, mesomelic or acromesomelic limb shortening, hemivertebrae with fusion of thoracic vertebrae, and brachydactyly. Other common features include micropenis with or without cryptorchidism in males and reduced clitoral size and hypoplasia of the labia majora in females, renal tract abnormalities, and nail hypoplasia or dystrophy. The disorder is recognizable at birth or in early childhood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1770070">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1726802"><div><strong>Chromosome 17q11.2 deletion syndrome, 1.4Mb</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1726802</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5401456</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Approximately 5 to 20% of all patients with neurofibromatosis type I (162200) carry a heterozygous deletion of approximately 1.4 Mb involving the NF1 gene and contiguous genes lying in its flanking regions (Riva et al., 2000; Jenne et al., 2001), which is caused by nonallelic homologous recombination of NF1 repeats A and C (Dorschner et al., 2000). The 'NF1 microdeletion syndrome' is often characterized by a more severe phenotype than that observed in the majority of NF1 patients. In particular, patients with NF1 microdeletion often show variable facial dysmorphism, mental retardation, developmental delay, an excessive number of early-onset neurofibromas (Venturin et al., 2004), and an increased risk for malignant peripheral nerve sheath tumors (De Raedt et al., 2003).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1726802">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1750917"><div><strong>Mitochondrial complex IV deficiency, nuclear type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1750917</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5435656</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex IV deficiency nuclear type 1 (MC4DN1) is an autosomal recessive metabolic disorder characterized by rapidly progressive neurodegeneration and encephalopathy with loss of motor and cognitive skills between about 5 and 18 months of age after normal early development. Affected individuals show hypotonia, failure to thrive, loss of the ability to sit or walk, poor communication, and poor eye contact. Other features may include oculomotor abnormalities, including slow saccades, strabismus, ophthalmoplegia, and nystagmus, as well as deafness, apneic episodes, ataxia, tremor, and brisk tendon reflexes. Brain imaging shows bilateral symmetric lesions in the basal ganglia, consistent with a clinical diagnosis of Leigh syndrome (see 256000). Some patients may also have abnormalities in the brainstem and cerebellum. Laboratory studies usually show increased serum and CSF lactate and decreased levels and activity of mitochondrial respiratory complex IV in patient tissues. There is phenotypic variability, but death in childhood, often due to central respiratory failure, is common (summary by Tiranti et al., 1998; Tiranti et al., 1999; Teraoka et al., 1999; Poyau et al., 2000)&#13; Genetic Heterogeneity of Mitochondrial Complex IV Deficiency&#13; Most isolated COX deficiencies are inherited as autosomal recessive disorders caused by mutations in nuclear-encoded genes; mutations in the mtDNA-encoded COX subunit genes are relatively rare (Shoubridge, 2001; Sacconi et al., 2003).&#13; Mitochondrial complex IV deficiency caused by mutation in nuclear-encoded genes, in addition to MC4DN1, include MC4DN2 (604377), caused by mutation in the SCO2 gene (604272); MC4DN3 (619046), caused by mutation in the COX10 gene (602125); MC4DN4 (619048), caused by mutation in the SCO1 gene (603664); MC4DN5 (220111), caused by mutation in the LRPPRC gene (607544); MC4DN6 (615119), caused by mutation in the COX15 gene (603646); MC4DN7 (619051), caused by mutation in the COX6B1 gene (124089); MC4DN8 (619052), caused by mutation in the TACO1 gene (612958); MC4DN9 (616500), caused by mutation in the COA5 gene (613920); MC4DN10 (619053), caused by mutation in the COX14 gene (614478); MC4DN11 (619054), caused by mutation in the COX20 gene (614698); MC4DN12 (619055), caused by mutation in the PET100 gene (614770); MC4DN13 (616501), caused by mutation in the COA6 gene (614772); MC4DN14 (619058), caused by mutation in the COA3 gene (614775); MC4DN15 (619059), caused by mutation in the COX8A gene (123870); MC4DN16 (619060), caused by mutation in the COX4I1 gene (123864); MC4DN17 (619061), caused by mutation in the APOPT1 gene (616003); MC4DN18 (619062), caused by mutation in the COX6A2 gene (602009); MC4DN19 (619063), caused by mutation in the PET117 gene (614771); MC4DN20 (619064), caused by mutation in the COX5A gene (603773); MC4DN21 (619065), caused by mutation in the COXFA4 gene (603883); MC4DN22 (619355), caused by mutation in the COX16 gene (618064); and MC4DN23 (620275), caused by mutation in the COX11 gene (603648).&#13; Mitochondrial complex IV deficiency has been associated with mutations in several mitochondrial genes, including MTCO1 (516030), MTCO2 (516040), MTCO3 (516050), MTTS1 (590080), MTTL1 (590050), and MTTN (590010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1750917">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1724999"><div><strong>Tolchin-Le Caignec syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1724999</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436509</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tolchin-Le Caignec syndrome (TOLCAS) is a developmental disorder characterized by mildly to moderately impaired intellectual development and behavioral problems, such as autism, ADHD, labile mood, and aggressive episodes. Many patients have bony abnormalities, including osteochondroma, craniosynostosis, dysmorphic facies, arachnodactyly, and large head circumference. Rarely, additional congenital anomalies may also be observed. These additional features and the bony defects are highly variable (summary by Tolchin et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1724999">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1776912"><div><strong>Neurodevelopmental disorder with dysmorphic facies, impaired speech, and hypotonia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1776912</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436585</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with dysmorphic facies, impaired speech, and hypotonia (NEDDISH) is an autosomal recessive disorder characterized by global developmental delay and mildly to severely impaired intellectual development with poor speech and language acquisition. Some patients may have early normal development with onset of the disorder in the first years of life. More variable neurologic abnormalities include hypotonia, seizures, apnea, mild signs of autonomic or peripheral neuropathy, and autism. Aside from dysmorphic facial features and occasional findings such as scoliosis or undescended testes, other organ systems are not involved (summary by Schneeberger et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1776912">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1736667"><div><strong>Neurodevelopmental disorder with progressive spasticity and brain white matter abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1736667</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436628</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with progressive spasticity and brain white matter abnormalities (NEDSWMA) is an autosomal recessive disorder characterized by impaired psychomotor development apparent in infancy. Affected individuals show poor overall growth, progressive microcephaly, and axial hypotonia, with later onset of spasticity. The disorder is progressive. Some patients show normal early development, but later have regression of motor, cognitive, and language skills. More variable features include seizures, joint contractures, ocular disturbances, episodic respiratory failure, and nonspecific dysmorphic facial features. The intellectual impairment is variable, ranging from poor visual contact with inability to walk or speak to milder intellectual disability with the ability to say some words. Brain imaging shows variable white matter abnormalities, including thin corpus callosum and poor myelination (summary by Husain et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1736667">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1776566"><div><strong>Vissers-Bodmer syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1776566</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436647</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Vissers-Bodmer syndrome (VIBOS) is characterized by global developmental delay with variably impaired intellectual development, speech delay, motor delay, and behavioral abnormalities apparent from infancy. The phenotype is highly variable: some individuals have only mild learning difficulties, whereas others have severe cognitive impairment with IQ in the 50s. Many patients have behavioral abnormalities, including autism spectrum disorder, ADD, ADHD, obsessive-compulsive disorder, and impulsivity. Other common features include growth impairment abnormalities, hypotonia, and distal skeletal defects, such as foot and hand deformities. Less common features include seizures, brain abnormalities on MRI, feeding problems, and joint hypermobility. Most individuals have dysmorphic facial features, but there is no recognizable gestalt (summary by Vissers et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1776566">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1765544"><div><strong>Mitochondrial complex 4 deficiency, nuclear type 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1765544</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436689</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex IV deficiency nuclear type 8 (MC4DN8) is an autosomal recessive metabolic disorder characterized by the onset of neuromuscular symptoms in the first decade of life after normal early development. Affected individuals develop a slowly progressive decline in neurologic function with gait difficulties, spasticity, dysarthria, hypotonia, and variable intellectual disability. Other features may include facial hypotonia, optic atrophy with visual impairment, nystagmus, muscle rigidity, and loss of ambulation. Rare patients may have renal tubulopathy. Brain imaging shows T2-weighted hyperintensities in the basal ganglia, consistent with a clinical diagnosis of Leigh syndrome (see 256000). Serum lactate is often increased, and patient tissues show decreased levels and activity of mitochondrial respiratory complex IV (summary by Seeger et al., 2010).&#13; For a discussion of genetic heterogeneity of mitochondrial complex IV (cytochrome c oxidase) deficiency, see 220110.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1765544">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1758434"><div><strong>Neurodevelopmental disorder with speech impairment and dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1758434</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436699</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with speech impairment and dysmorphic facies (NEDSID) is characterized by developmental delay associated with mild to moderately impaired intellectual development or learning difficulties, behavioral or psychiatric abnormalities, and delayed speech and language acquisition. Additional features include dysmorphic facies, distal limb anomalies, gastrointestinal problems or feeding difficulties, and hypotonia. The phenotypic features and severity of the disorder are variable (summary by Kummeling et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1758434">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1730423"><div><strong>Mitochondrial complex 4 deficiency, nuclear type 17</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1730423</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436718</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex IV deficiency nuclear type 17 (MC4DN17) is an autosomal recessive neurometabolic disorder with somewhat variable clinical manifestations and severity. Most affected individuals present in early childhood with motor and gait difficulties after normal early development. These motor abnormalities progress to spastic tetraparesis, sometimes resulting in loss of ambulation. Many patients also show episodic developmental regression: some have impaired cognition and dysarthria, although others have normal speech and cognition. More variable features include seizures and sensorimotor polyneuropathy. The clinical features tend to stabilize over time. Brain imaging shows a cavitating leukodystrophy, and laboratory studies show variably decreased levels and activity of mitochondrial respiratory complex IV in patient tissues (Melchionda et al., 2014).&#13; For a discussion of genetic heterogeneity of mitochondrial complex IV (cytochrome c oxidase) deficiency, see 220110.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1730423">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1761918"><div><strong>Noonan syndrome 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1761918</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436773</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Noonan syndrome (NS) is characterized by characteristic facies, short stature, congenital heart defect, and developmental delay of variable degree. Other findings can include broad or webbed neck, unusual chest shape with superior pectus carinatum and inferior pectus excavatum, cryptorchidism, varied coagulation defects, lymphatic dysplasias, and ocular abnormalities. Although birth length is usually normal, final adult height approaches the lower limit of normal. Congenital heart disease occurs in 50%-80% of individuals. Pulmonary valve stenosis, often with dysplasia, is the most common heart defect and is found in 20%-50% of individuals. Hypertrophic cardiomyopathy, found in 20%-30% of individuals, may be present at birth or develop in infancy or childhood. Other structural defects include atrial and ventricular septal defects, branch pulmonary artery stenosis, and tetralogy of Fallot. Up to one fourth of affected individuals have mild intellectual disability, and language impairments in general are more common in NS than in the general population.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1761918">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1765507"><div><strong>Developmental delay, impaired growth, dysmorphic facies, and axonal neuropathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1765507</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436781</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental delay, impaired growth, dysmorphic facies, and axonal neuropathy (DIGFAN) is a complex neurologic disorder characterized by impaired motor and intellectual development, hypotonia, poor overall growth, usually with short stature and microcephaly, and subtly dysmorphic facial features. Affected individuals have distal muscle weakness and muscle atrophy resulting in delayed acquisition of motor skills and persistent gait abnormalities. Although many patients have clinical and/or electrophysiologic features consistent with an axonal sensorimotor peripheral neuropathy, such as hyporeflexia, impaired sensation, foot drop, and pes cavus, the signs and severity are highly variable. Additional features may include hearing loss, pigmentary retinopathy, and abnormalities on brain imaging, including cerebral or cerebellar atrophy, hypomyelination, and lesions in the basal ganglia or brainstem. In some instances, the same mutation may result in different phenotypic manifestations (CMT2Z or DIGFAN syndrome), which highlights the expanding clinical spectrum associated with MORC2 mutations and may render classification of patients into one or the other disorder challenging (summary by Guillen Sacoto et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1765507">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1731507"><div><strong>Neurodevelopmental disorder with microcephaly, impaired language, and gait abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1731507</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436783</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NARS1-related neurologic disorders encompass NARS1-related neurodevelopmental disorder (NARS1-NDD), a neonatal- or childhood-onset phenotype with central nervous system and peripheral nervous system involvement, and NARS1-related hereditary neuropathy, an adolescent- or early adult-onset hereditary neuropathy. NARS1-NDD manifests with global developmental delay, intellectual disability, microcephaly, ataxia, seizures, and, rarely, neurobehavioral/psychiatric manifestations. Change in muscle tone can manifest either as spasticity or as hypotonia. Peripheral neuropathy with atrophy predominantly of the distal lower limbs can be associated. NARS1-related hereditary neuropathy manifests with mostly motor and sensory impairment involving weakness of predominantly the distal lower limbs and foot deformities, without prominent muscle atrophy. A few individuals have been described with isolated hereditary motor neuropathy associated with foot deformities, ankle contractures, kyphosis, hyperlaxity, and brisk reflexes. To date, 54 individuals from 30 families with NARS1 pathogenic variant(s) have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1731507">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1764121"><div><strong>Neurodevelopmental disorder with microcephaly, impaired language, epilepsy, and gait abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1764121</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436788</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">NARS1-related neurologic disorders encompass NARS1-related neurodevelopmental disorder (NARS1-NDD), a neonatal- or childhood-onset phenotype with central nervous system and peripheral nervous system involvement, and NARS1-related hereditary neuropathy, an adolescent- or early adult-onset hereditary neuropathy. NARS1-NDD manifests with global developmental delay, intellectual disability, microcephaly, ataxia, seizures, and, rarely, neurobehavioral/psychiatric manifestations. Change in muscle tone can manifest either as spasticity or as hypotonia. Peripheral neuropathy with atrophy predominantly of the distal lower limbs can be associated. NARS1-related hereditary neuropathy manifests with mostly motor and sensory impairment involving weakness of predominantly the distal lower limbs and foot deformities, without prominent muscle atrophy. A few individuals have been described with isolated hereditary motor neuropathy associated with foot deformities, ankle contractures, kyphosis, hyperlaxity, and brisk reflexes. To date, 54 individuals from 30 families with NARS1 pathogenic variant(s) have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1764121">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1754849"><div><strong>Intellectual developmental disorder with speech delay and axonal peripheral neuropathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1754849</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436813</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder with speech delay and axonal peripheral neuropathy (IDDSAPN) is an autosomal recessive neurologic disorder characterized by mild global developmental delay with motor impairment and severe speech delay apparent in the first years of life. Affected individuals begin to walk independently between 3 and 4 years of age, but often have an unsteady or ataxic gait. Most patients have progressive distal muscle weakness and atrophy of the lower limbs, foot or hand deformities, and dysarthria, consistent with a peripheral neuropathy. There is mildly impaired intellectual development. Some patients may have behavioral anomalies, such as autistic features or attention deficit-hyperactivity disorder (ADHD), and some can attend special schools. The overall clinical features indicate involvement of both the central and peripheral nervous systems (summary by Martin et al., 2020 and Ahmed et al., 2021)</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1754849">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1752166"><div><strong>COACH syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1752166</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436837</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">COACH syndrome is classically defined as Cerebellar vermis hypoplasia, Oligophrenia, Ataxia, Colobomas, and Hepatic fibrosis (Verloes and Lambotte, 1989). Brain MRI demonstrates the molar tooth sign, which is a feature of Joubert syndrome. The disorder has been described as a Joubert syndrome-related disorder with liver disease (summary by Doherty et al., 2010).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of COACH syndrome, see 216360.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1752166">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1744611"><div><strong>Ritscher-Schinzel syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1744611</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436883</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ritscher-Schinzel syndrome-3 (RTSC3) is characterized by craniocerebellocardiac anomalies and severe postnatal growth restriction, as well as complicated skeletal malformations, including vertebral body hypoossification, sternal aplasia, and chondrodysplasia punctata. Other features include developmental delay, ocular anomalies, periventricular nodular heterotopia, and proteinuria (Kato et al., 2020).&#13; For a discussion of genetic heterogeneity of Ritscher-Schinzel syndrome, see RTSC1 (220210).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1744611">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1762595"><div><strong>Lessel-Kreienkamp syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1762595</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436892</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Lessel-Kreienkamp syndrome (LESKRES) is a neurodevelopmental disorder characterized by global developmental delay with intellectual disability and speech and language delay apparent from infancy or early childhood. The severity of the disorder is highly variable: some patients have mildly delayed walking and mild cognitive deficits, whereas others are nonambulatory and nonverbal. Most have behavioral disorders. Additional features, including seizures, hypotonia, gait abnormalities, visual defects, cardiac defects, and nonspecific dysmorphic facial features, may also be present (summary by Lessel et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1762595">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1754257"><div><strong>AMED syndrome, digenic</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1754257</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5436906</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">AMED syndrome (AMEDS) is an autosomal recessive digenic multisystem disorder characterized by global developmental delay with impaired intellectual development, onset of bone marrow failure and myelodysplastic syndrome (MDS) in childhood, and poor overall growth with short stature (summary by Oka et al., 2020).&#13; For a discussion of genetic heterogeneity of bone marrow failure syndrome (BMFS), see BMFS1 (614675).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1754257">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1779966"><div><strong>Blepharophimosis-impaired intellectual development syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1779966</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5443984</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Blepharophimosis-impaired intellectual development syndrome (BIS) is a congenital disorder characterized by a distinct facial appearance with blepharophimosis and global development delay. Affected individuals have delayed motor skills, sometimes with inability to walk, and impaired intellectual development with poor or absent speech; some patients show behavioral abnormalities. There are recognizable facial features, including epicanthal folds, sparse eyebrows, broad nasal bridge, short nose with downturned tip, and open mouth with thin upper lip. Other more variable features include distal skeletal anomalies, feeding difficulties with poor growth, respiratory infections, and hypotonia with peripheral spasticity (summary by Cappuccio et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1779966">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1782096"><div><strong>Coffin-Siris syndrome 12</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1782096</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5444111</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Coffin-Siris syndrome-12 (CSS12) is a neurodevelopmental disorder characterized by global developmental delay with variably impaired intellectual development, speech and language delay, and behavioral abnormalities, such as autism or hyperactivity. Affected individuals may have hypotonia and poor feeding in infancy. There are variable dysmorphic facial features, although most patients do not have the classic hypoplastic fifth digit/nail abnormalities that are often observed in other forms of CSS (Barish et al., 2020).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Coffin-Siris syndrome, see CSS1 (135900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1782096">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1788942"><div><strong>Multiple congenital anomalies-neurodevelopmental syndrome, X-linked</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1788942</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5542341</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked multiple congenital anomalies-neurodevelopmental syndrome (MCAND) is an X-linked recessive congenital multisystemic disorder characterized by poor growth, global developmental delay with impaired intellectual development, and variable abnormalities of the cardiac, skeletal, and genitourinary systems. Most affected individuals also have hypotonia and dysmorphic craniofacial features. Brain imaging typically shows enlarged ventricles and thin corpus callosum; some have microcephaly, whereas others have hydrocephalus. The severity of the disorder is highly variable, ranging from death in early infancy to survival into the second or third decade. Pathogenetically, the disorder results from disrupted gene expression and signaling during embryogenesis, thus affecting multiple systems (summary by Tripolszki et al., 2021 and Beck et al., 2021). Beck et al. (2021) referred to the disorder as LINKED syndrome (LINKage-specific deubiquitylation deficiency-induced Embryonic Defects).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1788942">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1778119"><div><strong>Short stature, facial dysmorphism, and skeletal anomalies with or without cardiac anomalies 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1778119</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5542952</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1778119">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1782253"><div><strong>Short stature, facial dysmorphism, and skeletal anomalies with or without cardiac anomalies 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1782253</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543057</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Short stature, facial dysmorphism, and skeletal anomalies with or without cardiac anomalies-2 (SSFSC2) is characterized by thin and short long bones, distinctive facial dysmorphism, and dental and skeletal abnormalities, in the absence of developmental delay or intellectual disability. Cardiac anomalies have been reported in some patients (Lin et al., 2021).&#13; For a discussion of genetic heterogeneity of SSFSC, see SSFSC1 (617877).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1782253">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1784554"><div><strong>Intellectual developmental disorder, autosomal dominant 64</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1784554</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543067</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant intellectual developmental disorder-64 (MRD64) is characterized by mildly to severely impaired intellectual development (ID) with speech delays. Most patients also have autism spectrum disorder (ASD). Additional features are highly variable but may include motor delay, attention deficit-hyperactivity disorder (ADHD), and nonspecific dysmorphic features (summary by Mirzaa et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1784554">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1788485"><div><strong>Li-Campeau syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1788485</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543068</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Li-Campeau syndrome (LICAS) is an autosomal recessive syndromic neurodevelopmental disorder characterized by global developmental delay with impaired intellectual development, dysmorphic facial features, hypothyroidism, and variable abnormalities of the cardiac and genital systems. Additional features may include seizures, short stature, hypotonia, and brain imaging anomalies, such as cortical atrophy (summary by Li et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1788485">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1778926"><div><strong>Neurofacioskeletal syndrome with or without renal agenesis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1778926</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543070</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurofacioskeletal syndrome with or without renal agenesis (NFSRA) is characterized by developmental delay and/or intellectual disability; corpus callosum hypoplasia or agenesis; facial dysmorphism, including upslanting palpebral fissures, broad nasal tip, and wide mouth; and skeletal abnormalities, including short stature, scoliosis, and flexion contractures, with broad fingertips and/or toes. Renal agenesis, unilateral or bilateral, has also been observed in some patients (Schneeberger et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1778926">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1785587"><div><strong>Developmental delay with dysmorphic facies and dental anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1785587</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543197</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental delay with dysmorphic facies and dental anomalies (DEFDA) is characterized by generally mild global developmental delay with variably impaired intellectual development, walking by 2 to 3 years, and slow language acquisition. The severity of the disorder ranges from moderate cognitive deficits to mild learning difficulties or behavioral abnormalities. Most patients have dysmorphic facial features, often with abnormal dentition and nonspecific visual defects, such as myopia, astigmatism, and strabismus. Although rare, involvement of other systems, such as skeletal, cardiac, and gastrointestinal, may be present (summary by den Hoed et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1785587">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1781649"><div><strong>Kohlschutter-Tonz syndrome-like</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1781649</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543202</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Den Hoed-de Boer-Voisin syndrome (DHDBV) is characterized by global developmental delay with moderately to severely impaired intellectual development, poor or absent speech, and delayed motor skills. Although the severity of the disorder varies, many patients are nonverbal and have hypotonia with inability to sit or walk. Early-onset epilepsy is common and may be refractory to treatment, leading to epileptic encephalopathy and further interruption of developmental progress. Most patients have feeding difficulties with poor overall growth and dysmorphic facial features, as well as significant dental anomalies resembling amelogenesis imperfecta. The phenotype is reminiscent of Kohlschutter-Tonz syndrome (KTZS; 226750). More variable features of DHDBV include visual defects, behavioral abnormalities, and nonspecific involvement of other organ systems (summary by den Hoed et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1781649">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1787991"><div><strong>Global developmental delay with speech and behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1787991</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543226</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Global developmental delay with speech and behavioral abnormalities (GDSBA) is characterized by developmental delay apparent from infancy or early childhood. Affected individuals have mildly delayed fine and motor skills with walking by 3 years of age, mildly impaired intellectual development, speech and language delay, and variable behavioral abnormalities, mostly autism and ADHD. Some patients may have additional nonspecific features, such as facial dysmorphism, myopia or strabismus, and skeletal defects, including joint hypermobility, pes planus, or slender fingers (summary by Granadillo et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1787991">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1786662"><div><strong>Neurodevelopmental disorder with cerebral atrophy and variable facial dysmorphism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1786662</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543228</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with cerebral atrophy and facial dysmorphism (NEDCAFD) is an autosomal recessive disorder characterized by global developmental delay apparent from birth. Affected individuals have hypotonia with inability to walk and severely impaired intellectual development with absent language. Most patients have variable dysmorphic facial features including prominent eyes, protruding and low-set ears, and thin upper lip. Brain imaging shows cerebral atrophy, corpus callosum hypoplasia, and a simplified gyral pattern (summary by Rasheed et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1786662">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1781371"><div><strong>Neurodevelopmental disorder with spasticity, cataracts, and cerebellar hypoplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1781371</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543306</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with spasticity, cataracts, and cerebellar hypoplasia (NEDSCAC) is an autosomal recessive disorder characterized by global developmental delay with variably impaired intellectual development. More severely affected individuals are nonverbal and do not achieve independent ambulation, whereas others develop some speech and can walk, or show regression later in childhood. Common features include axial hypotonia, peripheral spasticity, dystonia, cataracts, and seizures. Brain imaging usually shows cerebellar hypoplasia with variable additional abnormalities, such as thin corpus callosum, cerebral atrophy, and hypomyelination (summary by Meng et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1781371">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1779339"><div><strong>KINSSHIP syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1779339</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543317</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">KINSSHIP syndrome (KINS) is an autosomal dominant disorder characterized by a recognizable pattern of anomalies including developmental delay, impaired intellectual development, seizures, mesomelic dysplasia, dysmorphic facial features, horseshoe or hypoplastic kidney, and failure to thrive (summary by Voisin et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1779339">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1785187"><div><strong>Hiatt-Neu-Cooper neurodevelopmental syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1785187</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543338</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hiatt-Neu-Cooper neurodevelopmental syndrome (HINCONS) is characterized by global developmental delay with delayed walking or inability to walk and impaired intellectual development with poor or absent speech. Affected individuals have axial hypotonia and dysmorphic facies. Additional more variable features may include seizures, autistic or behavioral abnormalities, and brain abnormalities, such as dysplastic corpus callosum or polymicrogyria (summary by Hiatt et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1785187">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1778557"><div><strong>Radio-Tartaglia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1778557</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543339</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Radio-Tartaglia syndrome (RATARS) is a neurodevelopmental disorder characterized by global developmental delay with impaired intellectual development, speech delay, and variable behavioral abnormalities. Affected individuals show hypotonia, mild motor difficulties, and craniofacial dysmorphism. Brain imaging may show nonspecific defects; rare patients have seizures or pyramidal signs. A subset of individuals may have congenital heart defects, precocious puberty, and obesity in females. Some of the features are similar to those observed in patients with chromosome 1p36 deletion syndrome (607872) (summary by Radio et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1778557">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1787923"><div><strong>Intellectual developmental disorder, autosomal dominant 65</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1787923</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543371</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant intellectual developmental disorder-65 (MRD65) is characterized by delayed motor and speech acquisition, variably impaired intellectual development, and behavioral abnormalities. Affected individuals also have dysmorphic facial features. Brain imaging may be normal or may show abnormalities, including cerebellar hypoplasia, poor development of the corpus callosum, dysmorphic hippocampus, and polymicrogyria. Feeding difficulties, hypotonia, and seizures may also be observed (Duncan et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1787923">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1785671"><div><strong>BDV syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1785671</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543403</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">BDV syndrome (BDVS) is an autosomal recessive disorder characterized by early-onset profound obesity, hyperphagia, and moderately impaired intellectual development accompanied by infantile hypotonia and other endocrine disorders including hypogonadotropic hypogonadism, hypothyroidism, and insulin resistance (summary by Bosch et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1785671">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1781627"><div><strong>Neurodevelopmental disorder with infantile epileptic spasms</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1781627</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543538</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with infantile epileptic spasms (NEDIES) is characterized by onset of severe and frequent epileptic spasms within the first year of life. Affected individuals have global developmental delay with delayed walking and poor or absent speech. More variable features may include poor overall growth, high-arched palate, and delayed myelination on brain imaging (summary by Fatima et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1781627">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1788435"><div><strong>Spinocerebellar ataxia, autosomal recessive 29</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1788435</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543595</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-29 (SCAR29) is a progressive neurodegenerative disorder characterized by delayed motor development in early infancy followed by difficulty walking due to an ataxic gait or inability to walk, hypotonia, and variably impaired intellectual development. Other features include dysarthria, nystagmus, peripheral spasticity, nystagmus, and visual impairment. Brain imaging typically shows atrophy of the cerebellar vermis, but other abnormalities may also be present. Some patients are wheelchair-bound and/or nonverbal (summary by Sanderson et al., 2021)&#13; In a review of the pathogenesis of disorders with prominent dystonia as a feature, Monfrini et al. (2021) classified SCAR29 as belonging to a group of neurologic disorders termed 'HOPS-associated neurologic disorders' (HOPSANDs), which are caused by mutations in genes encoding various components of the autophagic/endolysosomal system, including VPS41.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1788435">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1778853"><div><strong>Spinocerebellar ataxia, autosomal recessive 30</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1778853</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543620</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spinocerebellar ataxia-30 (SCAR30) is a progressive neurologic disorder characterized by childhood-onset global developmental delay with variably impaired intellectual development, motor dysfunction, and cerebellar ataxia. Affected individuals may also have psychiatric abnormalities, such as obsessive behavior, psychotic episodes, or hallucinations. Brain imaging usually shows cerebellar atrophy, although this may be an age-dependent feature (summary by Langer et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1778853">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1785087"><div><strong>White-Kernohan syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1785087</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543635</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">White-Kernohan syndrome (WHIKERS) is a neurodevelopmental disorder characterized by global developmental delay with variably impaired intellectual development, hypotonia, and characteristic facial features. Some patients may have abnormalities of other systems, including genitourinary and skeletal (summary by White et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1785087">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1790413"><div><strong>Neurodevelopmental disorder with dysmorphic facies and thin corpus callosum</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1790413</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5551361</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with dysmorphic facies and thin corpus callosum (NEDDFAC) is characterized by global developmental delay, impaired intellectual development with poor or absent speech and language, and dysmorphic facial features. Brain imaging tends to show thin corpus callosum and decreased white matter volume. Additional features such as seizures, cardiac defects, and behavioral abnormalities may also occur. The phenotype is variable (summary by Bina et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1790413">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794140"><div><strong>Intellectual developmental disorder, X-linked, syndromic, with pigmentary mosaicism and coarse facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794140</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561930</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked syndromic intellectual developmental disorder with pigmentary mosaicism and coarse facies (MRXSPF) is characterized by a phenotypic triad of severe developmental delay, coarse facial dysmorphisms, and Blaschkoid pigmentary mosaicism. Additional clinical features may include epilepsy, orthopedic abnormalities, hypotonia, and growth abnormalities. The disorder affects both males and females (Villegas et al., 2019; Diaz et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794140">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794145"><div><strong>STT3A-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794145</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561935</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">STT3A-CDG is a form of congenital disorders of N-linked glycosylation characterized by developmental delay, intellectual disability, failure to thrive, hypotonia and seizures. STT3A-CDG is caused by mutations in the gene &lt;i&gt;STT3A&lt;/i&gt; (11q23.3).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794145">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794146"><div><strong>Bardet-Biedl syndrome 22</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794146</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561936</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bardet-Biedl syndrome-22 (BBS22) is an autosomal recessive ciliopathy described in a single patient and characterized by retinitis pigmentosa, obesity, polydactyly, hypogonadism, and intellectual disability (Lindstrand et al., 2016).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Bardet-Biedl syndrome, see BBS1 (209900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794146">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794162"><div><strong>Usmani-Riazuddin syndrome, autosomal dominant</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794162</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561952</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant Usmani-Riazzudin syndrome (USRISD) is a neurodevelopmental disorder characterized by global developmental delay with impaired intellectual development and speech delay, hypotonia, and behavioral abnormalities, most commonly aggressive behavior. More variable additional features may include seizures and distal limb anomalies (summary by Usmani et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794162">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794165"><div><strong>VISS syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794165</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561955</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Loeys-Dietz syndrome (LDS) is characterized by vascular findings (cerebral, thoracic, and abdominal arterial aneurysms and/or dissections), skeletal manifestations (pectus excavatum or pectus carinatum, scoliosis, joint laxity, arachnodactyly, talipes equinovarus, and cervical spine malformation and/or instability), craniofacial features (hypertelorism, strabismus, bifid uvula / cleft palate, and craniosynostosis that can involve any sutures), and cutaneous findings (velvety and translucent skin, easy bruising, and dystrophic scars). Individuals with LDS are predisposed to widespread and aggressive arterial aneurysms and pregnancy-related complications including uterine rupture and death. Individuals with LDS can show a strong predisposition for allergic/inflammatory disease including asthma, eczema, and reactions to food or environmental allergens. There is also an increased incidence of gastrointestinal inflammation including eosinophilic esophagitis and gastritis or inflammatory bowel disease. Wide variation in the distribution and severity of clinical features can be seen in individuals with LDS, even among affected individuals within a family who have the same pathogenic variant.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794165">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794167"><div><strong>Developmental delay, impaired speech, and behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794167</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561957</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental delay, impaired speech, and behavioral abnormalities (DDISBA) is characterized by global developmental delay apparent from early childhood. Intellectual disability can range from mild to severe. Additional variable features may include dysmorphic facial features, seizures, hypotonia, motor abnormalities such as Tourette syndrome or dystonia, and hearing loss (summary by Cousin et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794167">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794177"><div><strong>DEGCAGS syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794177</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561967</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">DEGCAGS syndrome is an autosomal recessive syndromic neurodevelopmental disorder characterized by global developmental delay, coarse and dysmorphic facial features, and poor growth and feeding apparent from infancy. Affected individuals have variable systemic manifestations often with significant structural defects of the cardiovascular, genitourinary, gastrointestinal, and/or skeletal systems. Additional features may include sensorineural hearing loss, hypotonia, anemia or pancytopenia, and immunodeficiency with recurrent infections. Death in childhood may occur (summary by Bertoli-Avella et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794177">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794181"><div><strong>Congenital disorder of glycosylation, type 2v</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794181</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561971</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital disorder of glycosylation type 2v (CDG2V) is an autosomal recessive disorder characterized by neurodevelopmental delay and variable facial dysmorphisms (Polla et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794181">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794184"><div><strong>Neurodevelopmental disorder with hypotonia and dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794184</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561974</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia and dysmorphic facies (NEDHYDF) is characterized by global developmental delay and hypotonia apparent from birth. Affected individuals have variably impaired intellectual development, often with speech delay and delayed walking. Seizures are generally not observed, although some patients may have single seizures or late-onset epilepsy. Most patients have prominent dysmorphic facial features. Additional features may include congenital cardiac defects (without arrhythmia), nonspecific renal anomalies, joint contractures or joint hyperextensibility, dry skin, and cryptorchidism. There is significant phenotypic variability in both the neurologic and extraneurologic manifestations (summary by Tan et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794184">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794187"><div><strong>Neurodevelopmental disorder with hypotonia and brain abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794187</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561977</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia and brain abnormalities (NEDHYBA) is characterized by impaired development of motor skills, cognitive function, and speech acquisition beginning in infancy or early childhood. Some affected individuals may have feeding difficulties, seizures, behavioral abnormalities, and nonspecific dysmorphic facial features. Brain imaging shows variable abnormalities, including corpus callosum defects, cerebellar defects, and decreased white matter volume. There is significant phenotypic variability (summary by Duncan et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794187">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794194"><div><strong>Neurodevelopmental-craniofacial syndrome with variable renal and cardiac abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794194</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561984</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental-craniofacial syndrome with variable renal and cardiac abnormalities (NECRC) is an autosomal dominant disorder characterized by dysmorphic craniofacial features associated with mild developmental delay, mildly impaired intellectual development or learning difficulties, speech delay, and behavioral abnormalities. About half of patients have congenital anomalies of the kidney and urinary tract (CAKUT) and/or congenital cardiac defects, including septal defects (Connaughton et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794194">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794204"><div><strong>Usmani-Riazuddin syndrome, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794204</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561994</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive Usmani-Riazzudin syndrome (USRISR) is a neurodevelopmental disorder characterized by global developmental delay with impaired intellectual development and speech delay, hypotonia, spasticity, and behavioral abnormalities, most commonly aggressive behavior. More variable additional features may include seizures, scoliosis, and joint laxity (Usmani et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794204">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794207"><div><strong>Intellectual developmental disorder with hypotonia, impaired speech, and dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794207</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561997</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder with hypotonia, impaired speech, and dysmorphic facies (IDDHISD) is characterized by global developmental delay with impaired intellectual development and poor or absent speech, hypotonia, ophthalmologic abnormalities, and nonspecific dysmorphic features. Some affected individuals have seizures, and a few have involvement of other organ systems (Goodman et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794207">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794209"><div><strong>Developmental and epileptic encephalopathy 97</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794209</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5561999</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-97 (DEE97) is characterized by developmental delay, epileptic encephalopathy, and impaired intellectual development. Other clinical features may include autistic features and hypotonia.&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794209">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794214"><div><strong>Developmental delay with or without intellectual impairment or behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794214</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562004</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental delay with or without intellectual impairment or behavioral abnormalities (DDIB) is an autosomal dominant disorder with a nonspecific phenotype of developmental delay. Additional features may include neonatal feeding problems, hypotonia, and dysmorphic facial features (Dulovic-Mahlow et al., 2019; van Woerden et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794214">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794215"><div><strong>Cerebellar ataxia, brain abnormalities, and cardiac conduction defects</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794215</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562005</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebellar ataxia, brain abnormalities, and cardiac conduction defects (CABAC) is an autosomal recessive primarily neurologic disorder with variable manifestations. Common features included infantile-onset hypotonia, poor motor development, poor feeding and overall growth, and ataxic gait due to cerebellar ataxia. Other features include dysarthria, nystagmus, variable ocular anomalies, spasticity, hyperreflexia, and nonspecific dysmorphic features. Most, but not all, patients have global developmental delay with impaired intellectual development and speech delay. Brain imaging shows cerebellar hypoplasia, often with brainstem hypoplasia, enlarged ventricles, delayed myelination, and thin corpus callosum. A significant number of patients develop cardiac conduction defects in childhood or adolescence, often requiring pacemaker placement (summary by Slavotinek et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794215">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794216"><div><strong>Neurodevelopmental disorder with impaired language and ataxia and with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794216</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562006</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with impaired language and ataxia and with or without seizures (NEDLAS) is characterized by axial hypotonia and global developmental delay apparent in early infancy. Affected individuals have delayed walking with gait ataxia and poor language development. Behavioral abnormalities also commonly occur. The severity is highly variable: a subset of patients have a more severe phenotype with early-onset seizures resembling epileptic encephalopathy, inability to walk or speak, and hypomyelination on brain imaging (summary by Stolz et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794216">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794217"><div><strong>Joubert syndrome 40</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794217</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562007</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Joubert syndrome-40 (JBTS40) is an autosomal recessive neurodevelopmental disorder characterized by developmental delay, postaxial polydactyly, subtle midline notching or clefting of the upper lip, hypotonia, and the 'molar tooth sign' on brain imaging. Affected individuals do not exhibit retinal or renal anomalies, or significant obesity (Zhongling et al., 2021).&#13; For a discussion of genetic heterogeneity of Joubert syndrome, see JBTS1 (213300).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794217">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794222"><div><strong>Developmental delay, hypotonia, musculoskeletal defects, and behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794222</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562012</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental delay, hypotonia, musculoskeletal defects, and behavioral abnormalities (DEHMBA) is an early-onset neurodevelopmental disorder characterized by these features. Affected individuals also have nonspecific and variable dysmorphic facial features that do not constitute a recognizable gestalt. Although the disorder is caused by truncating mutations in the SRCAP gene as is FLHS, the DEHMBA phenotype is clinically distinguishable from FLHS by the lack of short stature, brachydactyly, and delayed bone age, as well as absence of a specific facial appearance. There are some overlapping features between the 2 disorders, mainly impaired intellectual development and speech delay (summary by Rots et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794222">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794223"><div><strong>Rhizomelic dysplasia, Ain-Naz type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794223</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562013</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The Ain-Naz type of rhizomelic dysplasia (RHZDAN) is characterized by severe short stature with marked rhizomelic shortening of the limbs, platyspondyly, and large hands and feet relative to height (Ain et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794223">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794228"><div><strong>Developmental and epileptic encephalopathy 99</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794228</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562018</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-99 (DEE99) is characterized by onset of seizures in early childhood associated with global developmental delay and severely impaired intellectual development. Other features may include hypotonia, quadriparesis, nystagmus, and apnea. Brain imaging may be normal or show nonspecific and variable abnormalities, including cerebral atrophy and polymicrogyria. The severity is variable; some patients die of refractory status epilepticus (summary by Vetro et al., 2021).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794228">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794233"><div><strong>Hearing loss, autosomal recessive 119</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794233</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562023</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive deafness-119 (DFNB119) is characterized by nonsyndromic mild to profound sensorineural hearing loss (Richard et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794233">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794234"><div><strong>Neurodevelopmental disorder with hearing loss and spasticity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794234</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562024</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hearing loss and spasticity (NEDHLS) is characterized by hearing loss, global developmental delay/impaired intellectual development, spastic-dystonic cerebral palsy, focal or generalized epilepsy, and microcephaly. Some children present with hypotonia (Richard et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794234">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794247"><div><strong>Zaki syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794247</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562037</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Zaki syndrome (ZKS) is characterized by developmental delay, progressive microcephaly, and short stature, as well as dysmorphic features including sparse scalp hair, cupped ears, wide nose and mouth, short philtrum, and high-arched palate. Other variable features have been observed, including ocular, skeletal, cardiac, and renal anomalies (Chai et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794247">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794264"><div><strong>Dystonia 33</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794264</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562054</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Dystonia-33 (DYT33) is a neurologic disorder characterized by onset of focal or generalized dystonia in the first decades of life (from early childhood to adolescence). The disorder is slowly progressive and may result in ambulation difficulties, dysarthria, or dysphagia. There is variable expressivity even with a family, as well as incomplete penetrance of the phenotype. Most mutations are in the heterozygous state, but a homozygous mutation with autosomal recessive inheritance has been reported, indicating variable patterns of transmission of DYT33. Some patients may have a more complex neurologic disorder with motor delay, lower limb spasticity, mild developmental delay with cognitive impairments, and nonspecific brain imaging abnormalities. There may be an exacerbation of the symptoms coinciding with viral infection or stress. Deep brain stimulation (DBS) may be therapeutic (summary by Kuipers et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794264">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794268"><div><strong>Trichothiodystrophy 9, nonphotosensitive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794268</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562058</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Nonphotosensitive trichothiodystrophy-9 (TTD9) is characterized by brittle hair and nails and scaly skin, accompanied by failure to thrive, microcephaly, and neuromotor developmental delay. Hair analysis shows low sulfur content, and skin fibroblasts demonstrate normal DNA repair efficiency after UV irradiation (Botta et al., 2021).&#13; For a general phenotypic description and discussion of genetic heterogeneity of trichothiodystrophy, see TTD1 (601675).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794268">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794271"><div><strong>Rauch-Steindl syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794271</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562061</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rauch-Steindl syndrome (RAUST) is characterized by poor pre- and postnatal growth, sometimes with short stature and small head circumference, characteristic dysmorphic facial features, and variable developmental delay with delayed motor and speech acquisition and impaired intellectual function that can be mild. Other features may include hypotonia and behavioral abnormalities. The phenotype represents a mild form of Wolf-Hirschhorn syndrome (WHS; 194190), which is a contiguous gene deletion syndrome caused by heterozygous deletion of several genes on chromosome 4p16. The clinical features of RAUST are similar to but milder than those of WHS, with less severe dysmorphic facial features, less severe developmental disabilities in general, and absence of a seizure disorder. The phenotype and expressivity of RAUST is highly variable (summary by Rauch et al., 2001; Zanoni et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794271">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794278"><div><strong>Congenital disorder of glycosylation, type Iw, autosomal dominant</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794278</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562068</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant congenital disorder of glycosylation type Iw (CDG1WAD) is characterized by variable skeletal anomalies, short stature, macrocephaly, and dysmorphic features; about half of patients have impaired intellectual development. Additional features include increased muscle tone and muscle cramps (Wilson et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794278">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794279"><div><strong>Microcephaly 28, primary, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794279</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562069</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive primary microcephaly-28 (MCPH28) is characterized by reduced head size (down to -8 SD) and variably impaired intellectual development apparent from early childhood (summary by Farooq et al., 2020).&#13; For a discussion of genetic heterogeneity of primary microcephaly, see MCPH1 (251200).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794279">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794284"><div><strong>Leukodystrophy, hypomyelinating, 23, with ataxia, deafness, liver dysfunction, and dilated cardiomyopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794284</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5562074</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypomyelinating leukodystrophy-23 with ataxia, deafness, liver dysfunction, and dilated cardiomyopathy (HLD23) is an autosomal recessive neurodegenerative disorder with systemic manifestations. Affected individuals show delayed motor development and ataxic gait in early childhood that progresses to spastic paraplegia with loss of ambulation in the first decades of life. Additional features include progressive sensorineural hearing loss resulting in deafness, hepatic dysfunction with elevated liver enzymes, and dilated cardiomyopathy that ultimately results in death in the first or second decades. Brain imaging shows hypomyelination, diffuse white matter abnormalities consistent with leukodystrophy, and thin corpus callosum (summary by Sferra et al., 2021).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of HLD, see 312080.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794284">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1798877"><div><strong>Early-onset progressive diffuse brain atrophy-microcephaly-muscle weakness-optic atrophy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1798877</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5567454</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PEBAT is an autosomal recessive neurodevelopmental disorder characterized by severely delayed psychomotor development apparent soon after birth or in infancy, profound intellectual disability, poor or absent speech, and seizures. Most patients are never able to walk due to hypotonia or spasticity. Brain imaging shows cerebral and cerebellar atrophy, thin corpus callosum, and secondary hypomyelination. The disorder shows progressive features, including microcephaly, consistent with a neurodegenerative process (summary by Miyake et al., 2016; Flex et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1798877">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1798947"><div><strong>Recurrent metabolic encephalomyopathic crises-rhabdomyolysis-cardiac arrhythmia-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1798947</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5567524</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">TANGO2 deficiency is characterized by developmental delay, intellectual disability, gait incoordination, speech difficulties, seizures, and hypothyroidism. Most individuals have TANGO2 spells, non-life-threatening paroxysmal worsening of baseline symptoms, including sudden onset of hypotonia, ataxia with loss of balance, head and body tilt, increased dysarthria, drooling, lethargy, and disorientation. In addition, life-threatening acute metabolic crises can occur, including rhabdomyolysis with elevated creatine phosphokinase and liver transaminases, hypoglycemia, prolonged QTc on EKG, ventricular arrhythmias, and/or cardiomyopathy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1798947">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1800300"><div><strong>Gnb5-related intellectual disability-cardiac arrhythmia syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1800300</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5568877</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GNB5-related neurodevelopmental disorder (GNB5-NDD) is characterized by a spectrum of neurodevelopmental phenotypes that range from severe-to-profound intellectual disability (ID; 31/41 reported individuals), to mild-to-moderate ID (5/41), to normal intellect with severe language disorder (5/41, one extended family). A unique and specific feature of GNB5-NDD – regardless of neurodevelopmental phenotype – is nearly universal bradycardia caused by sinoatrial node dysfunction (sick sinus syndrome). Most individuals with severe and profound ID have a developmental and epileptic encephalopathy with focal seizures or epileptic spasms, as well as visual impairment (central or retinal) with nystagmus, difficulty feeding, and gastroesophageal reflux disease. The risk of early mortality is increased.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1800300">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1800305"><div><strong>Progressive spondyloepimetaphyseal dysplasia-short stature-short fourth metatarsals-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1800305</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5568882</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic multiple congenital anomalies/dysmorphic syndrome with characteristics of global developmental delay and intellectual disability, progressive spondyloepimetaphyseal dysplasia, short stature, short fourth metatarsals and dysmorphic craniofacial features (including microcephaly, hypertelorism, epicanthal folds, mild ptosis, strabismus, malar hypoplasia, short nose, depressed nasal bridge, full lips, small, low-set ears and short neck). Craniosynostosis, generalized hypotonia, as well as asymmetry of the cerebral hemispheres and mild thinning of the corpus callosum on brain imaging have also been described.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1800305">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1800403"><div><strong>Autosomal recessive complex spastic paraplegia type 9B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1800403</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5568980</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive SPG9B is a neurologic disorder characterized by early-onset complex spastic paraplegia. Affected individuals had delayed psychomotor development, intellectual disability, and severe motor impairment. More variable features include dysmorphic facial features, tremor, and urinary incontinence (summary by Coutelier et al., 2015).&#13; For a discussion of genetic heterogeneity of autosomal recessive SPG, see SPG5A (270800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1800403">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1800447"><div><strong>Charcot-Marie-Tooth disease axonal type 2X</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1800447</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5569024</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Charcot-Marie-Tooth disease type 2X (CMT2X) is an autosomal recessive, slowly progressive, axonal peripheral sensorimotor neuropathy characterized by lower limb muscle weakness and atrophy associated with distal sensory impairment and gait difficulties. Some patients also have involvement of the upper limbs. Onset usually occurs in the first 2 decades of life, although later onset can also occur (summary by Montecchiani et al., 2016)&#13; For a phenotypic description and a discussion of genetic heterogeneity of axonal CMT, see CMT2A1 (118210).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1800447">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1805033"><div><strong>Hyaline fibromatosis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1805033</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5574677</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hyaline fibromatosis syndrome (HFS) is characterized by hyaline deposits in the papillary dermis and other tissues. It can present at birth or in infancy with severe pain with movement, progressive joint contractures, and often with severe motor disability, thickened skin, and hyperpigmented macules/patches over bony prominences of the joints. Gingival hypertrophy, skin nodules, pearly papules of the face and neck, and perianal masses are common. Complications of protein-losing enteropathy and failure to thrive can be life threatening. Cognitive development is normal. Many children with the severe form (previously called infantile systemic hyalinosis) have a significant risk of morbidity or mortality in early childhood; some with a milder phenotype (previously called juvenile hyaline fibromatosis) survive into adulthood.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1805033">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1803615"><div><strong>Frontorhiny</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1803615</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5574965</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">A distinct syndromic type of frontonasal malformation with characteristics of hypertelorism, wide nasal bridge, broad columella, widened philtrum, widely separated narrow nares, poor development of nasal tip, midline notch of the upper alveolus, columella base swellings and a low hairline. Additional features reported in some include upper eyelid ptosis and midline dermoid cysts of craniofacial structures and philtral pits or rugose folding behind the ears.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1803615">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1807366"><div><strong>Schaaf-Yang syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1807366</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5575066</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Schaaf-Yang syndrome (SYS) is a rare neurodevelopmental disorder that shares multiple clinical features with the genetically related Prader-Willi syndrome. It usually manifests at birth with muscular hypotonia in all and distal joint contractures in a majority of affected individuals. Gastrointestinal/feeding problems are particularly pronounced in infancy and childhood, but can transition to hyperphagia and obesity in adulthood. Respiratory distress is present in many individuals at birth, with approximately half requiring intubation and mechanical ventilation, and approximately 20% requiring tracheostomy. Skeletal manifestations such as joint contractures, scoliosis, and decreased bone mineral density are frequently observed. All affected individuals show developmental delay, resulting in intellectual disability of variable degree, from low-normal intelligence to severe intellectual disability. Other findings may include short stature, seizures, eye anomalies, and hypogonadism.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1807366">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1804638"><div><strong>Carey-Fineman-Ziter syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1804638</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676876</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Carey-Fineman-Ziter syndrome-1 (CFZS1) is a multisystem congenital disorder characterized by hypotonia, Moebius sequence (bilateral congenital facial palsy with impairment of ocular abduction), Pierre Robin complex (micrognathia, glossoptosis, and high-arched or cleft palate), delayed motor milestones, and failure to thrive. More variable features include dysmorphic facial features, brain abnormalities, and intellectual disability. It has been postulated that many clinical features in CFZS1 may be secondary effects of muscle weakness during development or brainstem anomalies (summary by Pasetti et al., 2016).&#13; Di Gioia et al. (2017) determined that CFZS1 represents a slowly progressive congenital myopathy resulting from a defect in myoblast fusion.&#13; Genetic Heterogeneity of Carey-Fineman-Ziter Syndrome&#13; Carey-Fineman-Ziter syndrome-2 (CFZS2; 619941) is caused by mutation in the MYMX gene (619912) on chromosome 6p21.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1804638">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1803541"><div><strong>Stüve-Wiedemann syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1803541</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676888</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Stuve-Wiedemann syndrome is an autosomal recessive disorder characterized by bowing of the long bones and other skeletal anomalies, episodic hyperthermia, respiratory distress, and feeding difficulties usually resulting in early death (Dagoneau et al., 2004).&#13; See also 'classic' Schwartz-Jampel syndrome type 1 (SJS1; 255800), a phenotypically similar but genetically distinct disorder caused by mutation in the HSPG2 gene (142461) on chromosome 1p36.&#13; Genetic Heterogeneity of Stuve-Wiedemann Syndrome&#13; Stuve-Wiedemann syndrome-2 (STWS2; 619751) is caused by mutation in the IL6ST gene (600694) on chromosome 5q11.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1803541">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1810214"><div><strong>3-methylglutaconic aciduria, type VIIB</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1810214</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676893</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CLPB (caseinolytic peptidase B) deficiency is characterized by neurologic involvement and neutropenia, which can range from severe to mild. In severe CLPB deficiency, death usually occurs at a few months of age due to significant neonatal neurologic involvement (hyperekplexia or absence of voluntary movements, hypotonia or hypertonia, swallowing problems, respiratory insufficiency, and epilepsy) and severe neutropenia associated with life-threatening infections. Individuals with moderate CLPB deficiency present with neurologic abnormalities in infancy including hypotonia and feeding problems, and develop spasticity, a progressive movement disorder (ataxia, dystonia, and/or dyskinesia), epilepsy, and intellectual disability. Neutropenia is variable, but not life threatening. In those with mild CLPB deficiency there is no neurologic involvement, intellect is normal, neutropenia is mild and intermittent, and life expectancy is normal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1810214">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1810363"><div><strong>Intellectual disability, autosomal dominant 40</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1810363</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676894</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia, impaired language, and dysmorphic features (NEDHILD) is a rare neurodevelopmental disorder associated with impaired intellectual development, speech and language impairment, microcephaly, seizures, hypotonia, ophthalmologic issues, constipation/gastroesophageal reflux, and behavioral problems, including autism and sleep disturbances (summary by Garrity et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1810363">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1808299"><div><strong>Intellectual developmental disorder, autosomal dominant 69</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1808299</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676896</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant intellectual developmental disorder-69 (MRD69) is characterized by developmental delay with variably impaired intellectual development. Additional features may include intention tremor in infancy and seizures in childhood, with remission of these in adolescence (Alkhater et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1808299">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1812153"><div><strong>Knobloch syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1812153</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676897</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Knobloch syndrome-2 (KNO2) is characterized by severe vitreoretinal degeneration associated with occipital skull defects, ranging from mild encephalocele to abnormally pigmented hair. Developmental delay may be mild or severe (Antonarakis et al., 2022).&#13; For a general phenotypic description and discussion of genetic heterogeneity of Knobloch syndrome, see KNO1 (267750).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1812153">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1811526"><div><strong>Gastrointestinal defects and immunodeficiency syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1811526</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676901</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PI4KA-related disorder is a clinically variable disorder characterized primarily by neurologic dysfunction (limb spasticity, developmental delay, intellectual disability, seizures, ataxia, nystagmus), gastrointestinal manifestations (multiple intestinal atresia, inflammatory bowel disease), and combined immunodeficiency (leukopenia, variable immunoglobulin defects). Age of onset is typically antenatal or in early childhood; individuals can present with any combination of these features. Rare individuals present with later-onset hereditary spastic paraplegia. Brain MRI findings can include hypomyelinating leukodystrophy, cerebellar hypoplasia/atrophy, thin or dysplastic corpus callosum, and/or perisylvian polymicrogyria.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1811526">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1802013"><div><strong>Intellectual developmental disorder, autosomal recessive 73</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1802013</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676902</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive intellectual developmental disorder-73 (MRT73) is characterized by global developmental delay with hypotonia and mildly delayed walking, impaired intellectual development with poor or absent speech, and mildly dysmorphic features (summary by Morrison et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1802013">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1811919"><div><strong>Hypogonadotropic hypogonadism 26 with or without anosmia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1811919</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676903</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">HH26 is characterized by micropenis and cryptorchidism at birth in male patients, and absent puberty and anosmia in male or female patients. Some affected individuals also exhibit craniosynostosis (Davis et al., 2020).&#13; Congenital idiopathic hypogonadotropic hypogonadism (IHH) is a disorder characterized by absent or incomplete sexual maturation by the age of 18 years, in conjunction with low levels of circulating gonadotropins and testosterone and no other abnormalities of the hypothalamic-pituitary axis. Idiopathic hypogonadotropic hypogonadism can be caused by an isolated defect in gonadotropin-releasing hormone (GNRH; 152760) release, action, or both. Other associated nonreproductive phenotypes, such as anosmia, cleft palate, and sensorineural hearing loss, occur with variable frequency. In the presence of anosmia, idiopathic hypogonadotropic hypogonadism has been called 'Kallmann syndrome (KS),' whereas in the presence of a normal sense of smell, it has been termed 'normosmic idiopathic hypogonadotropic hypogonadism (nIHH)' (summary by Raivio et al., 2007). Because families have been found to segregate both KS and nIHH, the disorder is here referred to as 'hypogonadotropic hypogonadism with or without anosmia (HH).'&#13; For a discussion of genetic heterogeneity of hypogonadotropic hypogonadism with or without anosmia as well as a discussion of oligogenicity of this disorder, see 147950.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1811919">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1802087"><div><strong>Neurodevelopmental disorder with or without variable movement or behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1802087</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676908</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with or without variable movement or behavioral abnormalities (NEDMAB) is an autosomal dominant disorder characterized by mildly to severely impaired intellectual development and, in some patients, movement abnormalities consisting of tremors, cerebellar ataxia, or extrapyramidal symptoms. Movement abnormalities have onset in childhood or adolescence. Other variable features include autism spectrum disorder or autistic features and epilepsy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1802087">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1801286"><div><strong>Spastic paraplegia 86, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1801286</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676910</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spastic paraplegia-86 (SPG86) is a complex neurologic disorder characterized by global developmental delay apparent from early childhood combined with early-onset progressive spasticity mainly affecting the lower limbs, but also affecting the upper limbs. Affected individuals have hyperreflexia, extensor plantar responses, pyramidal signs, and difficulty walking or inability to walk. Some may have joint contractures and foot or ankle deformities. Patients with SPG86 have impaired intellectual development with poor or absent speech, often with behavioral abnormalities. Brain imaging shows thin corpus callosum and white matter abnormalities. Rare patients may have seizures. The disorder is thus a complicated form of SPG (summary by Yahia et al., 2021, Miyake et al., 2022).&#13; For a discussion of genetic heterogeneity of autosomal recessive spastic paraplegia, see SPG5A (270800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1801286">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1809276"><div><strong>Teebi hypertelorism syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1809276</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676911</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Teebi hypertelorism syndrome-2 (TBHS2) is characterized primarily by hypertelorism, prominent forehead, thick and broad eyebrows, and short nose with depressed nasal root and broad nasal tip. Other features include thin upper lip, small chin with horizontal crease, and high or cleft palate. Developmental delay and/or impaired intellectual development have been observed in some patients (Li et al., 2021).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Teebi hypertelorism syndrome, see TBHS1 (145420).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1809276">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1812715"><div><strong>Combined oxidative phosphorylation deficiency 54</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1812715</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676912</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Combined oxidative phosphorylation deficiency-54 (COXPD54) is an autosomal recessive disorder with pleiotropic multisystem presentations resulting from a disruption in mitochondrial transcription and translation. The phenotype is highly variable. Many patients have early-onset sensorineural hearing loss, sometimes in isolation, and sometimes associated with global developmental delay or primary ovarian failure. Other features may include peripheral hypertonia, seizures, muscle weakness, behavioral abnormalities, and leukoencephalopathy on brain imaging. Serum lactate may or may not be elevated (summary by Hochberg et al., 2021).&#13; For a discussion of genetic heterogeneity of combined oxidative phosphorylation deficiency, see COXPD1 (609060).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1812715">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1808365"><div><strong>Parkinsonism-dystonia 3, childhood-onset</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1808365</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676913</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The current (but limited) understanding of the WARS2 deficiency phenotypic spectrum, based on 29 individuals from 24 families reported to date, can be viewed as a clustering of hallmark features within the broad phenotypes of epilepsy and movement disorder. The epilepsy spectrum encompasses neonatal- or infantile-onset developmental and epileptic encephalopathy (DEE) and other less well described seizure types. DEE manifests mostly in the neonatal period or within the first year of life. Seizures are generally difficult to control and may lead to status epilepticus and death. Over time the following become evident: global developmental delay, mild-to-severe intellectual disability, speech impairment (slurred and slow speech, dysarthria or no speech production but preserved receptive speech), weakness and muscle atrophy, motor hyperactivity with athetosis, and neuropsychiatric manifestations including aggressiveness and sleep disorders. The movement disorder spectrum encompasses the overlapping phenotypes of levodopa-responsive parkinsonism/dystonia and progressive myoclonus-ataxia/hyperkinetic movement disorder and is primarily associated with childhood or early adulthood onset. Of note, the continua within and between the epilepsy spectrum and the movement disorder spectrum remain to be determined pending reporting of more individuals with WARS2 deficiency.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1808365">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1811493"><div><strong>Charcot-Marie-Tooth disease, demyelinating, IIA 1I</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1811493</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676914</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Demyelinating Charcot-Marie-Tooth disease type 1I (CMT1I) is a neurologic disorder characterized predominantly by delayed motor development in the first years of life associated with gait abnormalities, sensory ataxia, hyporeflexia, and distal sensory impairment due to a sensorimotor peripheral neuropathy that mainly affects the lower limbs. The disorder is progressive, and some may have upper limb involvement. A subset of patients has central nervous system involvement that manifests as global developmental delay with impaired intellectual development and speech difficulties. Other features may include spasticity, hyperreflexia, tremor, dysmetria, seizures, or cerebellar findings. Brain imaging may be normal or show nonspecific abnormalities, such as white matter signal changes and delayed myelination (summary by Djordjevic et al., 2021).&#13; For a discussion of genetic heterogeneity of autosomal dominant Charcot-Marie-Tooth disease type 1, see CMT1B (118200).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1811493">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1806598"><div><strong>Combined oxidative phosphorylation deficiency 55</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1806598</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676915</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Combined oxidative phosphorylation deficiency-55 (COXPD55) is characterized by global developmental delay, hypotonia, short stature, and impaired intellectual development with speech disabilities in childhood. Indolent progressive external ophthalmoplegia phenotype has been described in 1 patient (summary by Olahova et al., 2021).&#13; For a discussion of genetic heterogeneity of combined oxidative phosphorylation deficiency, see COXPD1 (609060).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1806598">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1810348"><div><strong>Tessadori-van Haaften neurodevelopmental syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1810348</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676922</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tessadori-Bicknell-van Haaften neurodevelopmental syndrome-1 (TEBIVANED1) is characterized by poor overall growth with short stature, microcephaly, hypotonia, profound global developmental delay often with poor or absent speech, and characteristic dysmorphic facial features, including hypertelorism and abnormal nose. Other variable neurologic and systemic features may also occur (Tessadori et al., 2017).&#13; Genetic Heterogeneity of Tessadori-van Haaften Neurodevelopmental Syndrome&#13; See also TEBIVANED2 (619759), caused by mutation in the H4C11 gene (602826); TEBIVANED3 (619950), caused by mutation in the H4C5 gene (602830); and TEBIVANED4 (619951), caused by mutation in the H4C9 gene (602833).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1810348">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1803228"><div><strong>Tessadori-van Haaften neurodevelopmental syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1803228</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676923</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tessadori-Bicknell-van Haaften neurodevelopmental syndrome-2 (TEBIVANED2) is characterized by poor overall growth, profound global developmental delay with absent speech, and characteristic dysmorphic facial features, including hypertelorism, abnormal nose, and wide mouth (Tessadori et al., 2020).&#13; For a discussion of genetic heterogeneity of Tessadori-Bicknell-van Haaften neurodevelopmental syndrome, see TEBIVANED1 (619758).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1803228">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1808634"><div><strong>Cerebellar dysfunction, impaired intellectual development, and hypogonadotropic hypogonadism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1808634</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676924</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebellar dysfunction, impaired intellectual development, and hypogonadotropic hypogonadism (CDIDHH) is characterized by delayed motor development, ataxia, severe progressive scoliosis, moderate to severe intellectual disability, and delayed sexual development. Cerebellar hypoplasia has been observed in some patients (Whittaker et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1808634">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1807460"><div><strong>Kury-Isidor syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1807460</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676925</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Kury-Isidor syndrome (KURIS) is a neurodevelopmental disorder with a highly variable phenotype. It is characterized mainly by mild global developmental delay apparent from infancy or early childhood with walking delayed by a few years and speech delay, often with language deficits. Intellectual development may be mildly delayed, borderline, or even normal; most patients have behavioral problems, including autism. Additional variable systemic features may include poor overall growth, hypotonia, distal skeletal anomalies, seizures, and nonspecific dysmorphic facial features (summary by Kury et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1807460">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1802903"><div><strong>Macrocephaly, neurodevelopmental delay, lymphoid hyperplasia, and persistent fetal hemoglobin</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1802903</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676928</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Macrocephaly, neurodevelopmental delay, lymphoid hyperplasia, and persistent fetal hemoglobin (MNDLFH) is characterized by clinically significant pharyngeal lymphoid hypertrophy, with adenoid overgrowth, frequent upper airway infections, and sleep apnea. Macrocephaly without structural brain abnormalities is present, and patients exhibit increased weight for height as well as delayed gross motor and impaired intellectual development; autistic features and attention-deficit hyperactivity disorder have also been reported. An increased fraction of fetal hemoglobin has been observed in some patients (Ohishi et al., 2020; von der Lippe et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1802903">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1810465"><div><strong>Immunodeficiency 96</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1810465</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676930</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Immunodeficiency-96 (IMD96) is an autosomal recessive disorder characterized by onset of recurrent, usually viral, respiratory infections in infancy or early childhood. Other infections, including gastrointestinal and urinary tract infections, may also occur. Laboratory studies show hypogammaglobulinemia, lymphopenia with increased gamma/delta T cells, and erythrocyte macrocytosis. The disorder results from defective cellular DNA repair (summary by Maffucci et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1810465">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1809253"><div><strong>Congenital disorder of deglycosylation 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1809253</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676931</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital disorder of deglycosylation-2 (CDDG2) is an autosomal recessive disorder with variable associated features such as dysmorphic facies, impaired intellectual development, and brain anomalies, including polymicrogyria, interhemispheric cysts, hypothalamic hamartoma, callosal anomalies, and hypoplasia of brainstem and cerebellar vermis (Maia et al., 2022).&#13; For a discussion of genetic heterogeneity of congenital disorder of deglycosylation, see CDGG1 (615273).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1809253">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1809351"><div><strong>Developmental and epileptic encephalopathy 100</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1809351</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676932</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-100 (DEE100) is a severe neurologic disorder characterized by global developmental delay and onset of variable types of seizures in the first months or years of life. Most patients have refractory seizures and show developmental regression after seizure onset. Affected individuals have ataxic gait or inability to walk and severe to profoundly impaired intellectual development, often with absent speech. Additional more variable features may include axial hypotonia, hyperkinetic movements, dysmorphic facial features, and brain imaging abnormalities (summary by Schneider et al., 2021).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1809351">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1808159"><div><strong>Intellectual developmental disorder, autosomal recessive 75, with neuropsychiatric features and variant lissencephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1808159</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676961</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive intellectual developmental disorder-75 with neuropsychiatric features and variant lissencephaly (MRT75) is characterized by global developmental delay apparent from infancy or early childhood and moderate to profoundly impaired intellectual development. Most affected individuals have behavioral abnormalities, including aggression and ADHD; a few have psychiatric manifestations, including psychosis. More variable additional features include well-controlled seizures and dysmorphic facial features. Brain imaging often shows frontal predominant pachygyria or other gyri/sulci abnormalities, consistent with a variant of lissencephaly and a malformation of cortical development (MCD) (summary by Zaki et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1808159">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1803456"><div><strong>Neurodevelopmental disorder with neuromuscular and skeletal abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1803456</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676965</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with neuromuscular and skeletal abnormalities (NEDNMS) is an autosomal recessive disorder characterized by global developmental delay apparent from infancy or early childhood. The severity of the disorder is highly variable. Affected individuals show impaired intellectual development and motor delay associated with either severe hypotonia or hypertonia and spasticity. Most affected individuals have skeletal defects and dysmorphic facial features. Some may have ocular or auditory problems, peripheral neuropathy, behavioral abnormalities, and nonspecific findings on brain imaging (Kurolap et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1803456">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1801540"><div><strong>Neurodegeneration, childhood-onset, with progressive microcephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1801540</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676972</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Childhood-onset neurodegeneration with progressive microcephaly (CONPM) is an autosomal recessive neurodevelopmental disorder characterized by global developmental delay apparent from infancy. The phenotype is highly variable: the most severely affected individuals have severe and progressive microcephaly, early-onset seizures, lack of visual tracking, and almost no developmental milestones, resulting in early death. Less severely affected individuals have a small head circumference and severely impaired intellectual development with poor speech and motor delay. Additional features may include poor overall growth, axial hypotonia, limb hypertonia with spasticity, undescended testes, and cerebral atrophy with neuronal loss (Lam et al., 2019 and Vanoevelen et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1801540">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1812577"><div><strong>Neurodevelopmental disorder with hypotonia, impaired speech, and behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1812577</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676975</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">GNAI1-related neurodevelopmental disorder (GNAI1-NDD) is characterized by mild-to-profound developmental delay and intellectual disability, hypotonia, neurobehavioral and/or psychiatric manifestations, and epilepsy. The neurobehavioral and/or psychiatric manifestations include features of autism spectrum disorder such as stereotypic behaviors (hand flapping, head banging, hand wringing, repetitive noises, teeth grinding, mouthing behaviors), sensory sensitivities, and poor eye contact. Temper tantrums, anxiety, agitation, aggression, and attention-deficit/hyperactivity disorder are also reported. Seizure onset typically occurs within the first six months of life; seizure types include absence, generalized tonic-clonic, and focal-onset impaired awareness. Additional common features include scoliosis, hip dysplasia, feeding difficulties or obesity with insatiable appetite, constipation, and strabismus.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1812577">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1808333"><div><strong>Parenti-mignot neurodevelopmental syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1808333</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676984</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Parenti-Mignot neurodevelopmental syndrome (PMNDS) is an autosomal dominant neurodevelopmental disorder frequently characterized by impaired intellectual development, speech delay, motor delay, behavioral problems, and epilepsy (Parenti et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1808333">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1810140"><div><strong>Neurodevelopmental disorder with microcephaly, hypotonia, nystagmus, and seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1810140</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676986</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with microcephaly, hypotonia, nystagmus, and seizures (NEDMHS) is an autosomal recessive disorder characterized by global developmental delay and impaired intellectual development apparent from infancy. Affected individuals have hypotonia with poor or absent motor skills, feeding difficulties with poor overall growth, microcephaly, mild dysmorphic features, and early-onset seizures. Additional variable features, such as nystagmus, cortical blindness, and spasticity, may also occur. Patients with this disorder tend to have recurrent respiratory infections, likely due to aspiration, that may lead to death in childhood (Arnadottir et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1810140">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1804653"><div><strong>Neurodevelopmental disorder with poor growth and skeletal anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1804653</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676990</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with poor growth and skeletal anomalies (NEDGS) is an autosomal recessive disorder characterized by global developmental delay and impaired intellectual development apparent from infancy. Affected individuals have hypotonia, delayed walking, poor or absent speech, and variable skeletal anomalies. More variable features include seizures, nonspecific dysmorphic facial features, oculomotor apraxia, and nonspecific brain imaging abnormalities (Iqbal et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1804653">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1812769"><div><strong>Developmental and epileptic encephalopathy 102</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1812769</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676991</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-102 (DEE102) is an autosomal recessive neurodevelopmental disorder characterized by global developmental delay and severe to profoundly impaired intellectual development with inability to walk or speak. Most patients have onset of variable types of seizures within the first year of life, and the seizures tend to be refractory. Additional features include progressive microcephaly, visual impairment, axial hypotonia, peripheral hypertonia, and nonspecific brain imaging abnormalities (Marafi et al., 2022).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1812769">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1802083"><div><strong>Osteoporosis, childhood- or juvenile-onset, with developmental delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1802083</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676992</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Childhood- or juvenile-onset osteoporosis with developmental delay (OPDD) is characterized by evidence of osteopenia or osteoporosis, with recurrent fractures following minor trauma in some patients. Developmental delay is variable, and includes mild intellectual or learning disabilities as well as wide-based gait and/or gross motor delays. Microcephaly is present in some patients (Marom et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1802083">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1809728"><div><strong>Peripheral motor neuropathy, childhood-onset, biotin-responsive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1809728</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676997</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Childhood-onset biotin-responsive peripheral motor neuropathy (COMNB) is an autosomal recessive disorder characterized predominantly by the onset of distal muscle weakness and atrophy late in the first decade of life. The disorder predominantly affects the upper limbs and hands, resulting in difficulties with fine motor skills. Some patients may have lower limb involvement, resulting in gait difficulties. Electrophysiologic studies and muscle biopsy are consistent with chronic denervation with axonal and demyelinating features. Rare patients may have additional neurologic signs, including spasticity, ataxia, and cerebellar signs. Sensation is intact, and patients have normal cognitive development. Treatment with biotin, pantothenic acid, and lipoic acid may result in clinical improvement (Holling et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1809728">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1805816"><div><strong>Neurodevelopmental disorder with language delay and seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1805816</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5676998</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with language delay and seizures (NEDLDS) is an autosomal recessive disorder characterized by global developmental delay with mild to severely impaired intellectual development and speech delay with poor or absent language. Affected individuals develop early-onset seizures that are usually well-controlled with medication. Additional features may include axial hypotonia, peripheral hypertonia, hypothyroidism, and nonspecific dysmorphic features or brain imaging abnormalities (Lu et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1805816">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1812470"><div><strong>Intellectual developmental disorder, autosomal dominant 66</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1812470</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5677000</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant intellectual developmental disorder-66 (MRD66) is characterized by global developmental delay with mildly to moderately impaired intellectual development and mild speech delay. The phenotype and severity are highly variable. Some patients have behavioral problems or autism spectrum disorder, and about 50% have variable types of seizures. Additional features may include nonspecific dysmorphic facial features, tall or short stature, and mild skeletal anomalies (Rahimi et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1812470">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1809962"><div><strong>Developmental and epileptic encephalopathy 103</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1809962</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5677002</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-103 (DEE103) is characterized by onset of various types of seizures in the first year of life, most of which are refractory to treatment. Affected individuals show global developmental delay with impaired intellectual development ranging from mild to severe. Additional features may include hypotonia, ataxia, and behavioral abnormalities, including autism and hyperactivity (Schwarz et al., 2022).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1809962">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1801185"><div><strong>Dystonia 35, childhood-onset</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1801185</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5677003</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Childhood-onset dystonia-35 (DYT35) is an autosomal recessive neurologic disorder characterized by the onset of a dystonic movement disorder in the first year of life. Symptoms may be partially responsive to L-DOPA treatment. Neurodevelopment is otherwise normal (Sleiman et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1801185">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1805690"><div><strong>Intellectual developmental disorder, autosomal dominant 67</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1805690</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5677006</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant intellectual developmental disorder-67 (MRD67) is characterized by global developmental delay with variably impaired intellectual development apparent from infancy or early childhood. Additional features may include behavioral abnormalities, such as autism spectrum disorder (ASD) and ADHD, as well as language and sleeping difficulties. Brain imaging is normal (Ismail et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1805690">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1802176"><div><strong>Intellectual developmental disorder, autosomal dominant 68</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1802176</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5677008</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant intellectual developmental disorder-68 (MRD68) is characterized by developmental delay/intellectual disability, microcephaly, poor growth, feeding difficulties, and dysmorphic features. Some patients may have autism spectrum disorder or attention deficit-hyperactivity disorder (ADHD) (Cif et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1802176">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1804234"><div><strong>Tessadori-Van Haaften neurodevelopmental syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1804234</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5677016</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tessadori-Bicknell-van Haaften neurodevelopmental syndrome-4 (TEBIVANED4) is characterized by global developmental delay with poor overall growth, variably impaired intellectual development, learning difficulties, distal skeletal anomalies, and dysmorphic facies. Some patients have visual or hearing deficits. The severity and manifestations of the disorder are highly variable (Tessadori et al., 2022).&#13; For a discussion of genetic heterogeneity of TEBIVANED, see TEBIVANED1 (619758).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1804234">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1808104"><div><strong>Craniofacial dysmorphism, skeletal anomalies, and impaired intellectual development 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1808104</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5677021</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Craniofacial dysmorphism, skeletal anomalies, and impaired intellectual development syndrome-1 (CFSMR1) is characterized by cranial involvement with macrocrania at birth, brachycephaly, anomalies of middle fossa structures including hypoplasia of corpus callosum, enlargement of septum pellucidum, and dilated lateral ventricles, as well as cortical atrophy and hypodensity of the gray matter. Facial dysmorphisms include flat face, hypertelorism, epicanthal folds, synophrys, broad nasal bridge, cleft lip and cleft palate, and low-set posteriorly rotated ears. Patients also exhibit short neck and multiple costal and vertebral anomalies. The face is rather characteristic, and various authors have consistently reported affable/friendly personality, despite intellectual delay (summary by Alanay et al., 2014).&#13; Genetic Heterogeneity of Craniofacial Dysmorphism, Skeletal Anomalies, and Impaired Intellectual Development Syndrome&#13; CFSMR2 (616994) is caused by mutation in the RAB5IF gene (619960) on chromosome 20q11.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1808104">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1803276"><div><strong>Chilton-Okur-Chung neurodevelopmental syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1803276</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5677022</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Chilton-Okur-Chung neurodevelopmental syndrome (CHOCNS) is characterized mainly by global developmental delay with variably impaired intellectual development and occasional speech delay. Most patients have behavioral abnormalities, including autism spectrum disorder, ADHD, and aggression. About half of patients have dysmorphic facial features, and about half have nonspecific brain abnormalities, including thin corpus callosum. Rare involvement of other organ systems may be present. At least 1 child with normal development at age 2.5 years has been reported (Chilton et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1803276">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1809227"><div><strong>Chromosome Xq13 duplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1809227</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5677057</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1809227">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1814561"><div><strong>Transketolase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1814561</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5700245</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare disorder of pentose phosphate metabolism with characteristics of developmental delay and intellectual disability, delayed or absent speech, short stature and congenital heart defects (such as ventricular septal defect, atrial septal defect and patent foramen ovale). Additional reported features include hypotonia, hyperactivity, stereotypic behaviour, ophthalmologic abnormalities (bilateral cataract, uveitis, strabismus), hearing impairment and variable facial dysmorphism among others. Laboratory analysis shows elevated plasma and urinary polyols (erythritol, arabitol and ribitol) and urinary sugar-phosphates (ribose-5-phosphate and xylulose/ribulose-5-phosphate).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1814561">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823952"><div><strong>Epilepsy, X-linked 2, with or without impaired intellectual development and dysmorphic features</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823952</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774178</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked epilepsy-2 with or without impaired intellectual development and dysmorphic features (EPILX2) is a neurologic disorder characterized by the onset of seizures usually in the first years of life, although later onset may also occur. Most individuals also have developmental delay, speech delay, and intellectual disability or learning difficulties. Some patients have dysmorphic facial features or mild skeletal anomalies. The severity of the disorder and accompanying features are highly variable, even within the same family. In general, males are more severely affected than females, although there is evidence for incomplete penetrance in both sexes (Niturad et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823952">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823953"><div><strong>Neurodevelopmental disorder with gait disturbance, dysmorphic facies, and behavioral abnormalities, X-linked</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823953</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774179</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hijazi-Reis syndrome (HIJRS) is an X-linked dominant disorder characterized by global developmental delay with hypotonia, motor delay, impaired intellectual development, and speech and language delay. Affected individuals also have dysmorphic facial features, gastrointestinal issues, and ocular anomalies. Rare patients have seizures (Hijazi et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823953">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823956"><div><strong>Developmental and epileptic encephalopathy 104</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823956</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774183</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-104 (DEE104) is an autosomal dominant disorder characterized by developmental delay in the first few months of life and drug-resistant focal and generalized tonic-clonic seizures (summary by Bott et al., 2021).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823956">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823957"><div><strong>Neurodevelopmental disorder with epilepsy and brain atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823957</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774184</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with epilepsy and brain atrophy (NEDEBA) is an autosomal recessive disorder characterized by early-onset progressive myoclonus epilepsy with ataxia (summary by Bott et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823957">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823958"><div><strong>Neurodevelopmental disorder with severe motor impairment, absent language, cerebral hypomyelination, and brain atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823958</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774185</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with severe motor impairment, absent language, cerebral hypomyelination, and brain atrophy (NEDMLHB) is characterized by the onset of these features soon after birth or in early infancy. Affected individuals make almost no developmental progress, are unable to sit or walk, do not acquire speech, have poor visual fixation, and show poor overall growth associated with feeding problems. Some may have a progressive disease course, suggesting neurodegeneration. Additional more variable features include seizures, spasticity, and joint contractures. Brain imaging shows hypomyelination, thin corpus callosum, and cerebral and cerebellar atrophy (Wong et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823958">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823966"><div><strong>Intellectual developmental disorder, autosomal recessive 77</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823966</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774193</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive intellectual developmental disorder-77 (MRT77) is a nonsyndromic neurodevelopmental disorder characterized by global developmental delay with variably impaired cognitive development apparent from infancy. Affected individuals usually have delayed walking, sometimes with an unsteady gait, and may have poor speech and communication. Brain imaging is normal, and there are no additional significant neurologic abnormalities (Khoshbakht et al., 2021).&#13; Mutation in the CEP104 gene also causes a form of Joubert syndrome (JBTS25; 616781).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823966">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823967"><div><strong>Neurodevelopmental disorder with speech delay and variable ocular anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823967</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774194</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with speech delay and variable ocular anomalies (NEDSOA) is an autosomal recessive disorder characterized by global developmental delay with impaired intellectual development and poor speech acquisition apparent from infancy. Most affected individuals have dysmorphic facial features with notable ocular anomalies, including exotropia, strabismus, hypo- or hypertropia, and refraction problems. Additional features may include febrile seizures, sensorineural hearing loss, and behavioral abnormalities. Brain imaging is usually normal, but abnormalities of the corpus callosum have been reported (Broly et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823967">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823969"><div><strong>Neurodevelopmental disorder with intention tremor, pyramidal signs, dyspraxia, and ocular anomalies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823969</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774196</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with intention tremor, pyramidal signs, dyspraxia, and ocular anomalies (NEDITPO) is an autosomal recessive multiple congenital anomaly syndrome characterized by mild to moderate intellectual disability, dysmorphic facial features, intention tremor, dyspraxia, and vertical strabismus (Rahikkala et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823969">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823972"><div><strong>Intellectual developmental disorder with muscle tone abnormalities and distal skeletal defects</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823972</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774199</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder with muscle tone abnormalities and distal skeletal defects (IDDMDS) is an autosomal recessive disorder characterized by global developmental delay apparent in infancy manifest as speech delay and late walking by a few years. Affected individuals have hypertonia or, more rarely, hypotonia; a notable common feature is facial myokymia with corresponding EMG findings. Additional features include distal skeletal defects such as joint contractures, hypo- or areflexia, and hernia (Marafi et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823972">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823975"><div><strong>Developmental delay, hypotonia, and impaired language</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823975</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774202</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental delay, hypotonia, and impaired language (DEDHIL) is a neurodevelopmental disorder characterized by variably impaired intellectual development usually with hypotonia, mild motor delay, and language difficulties. Affected individuals may also have nonspecific dysmorphic facial features, gastrointestinal problems, and abnormalities on brain imaging (Stephenson et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823975">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823979"><div><strong>Intellectual developmental disorder with autism and dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823979</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774206</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual developmental disorder with autism and dysmorphic facies (IDDADF) is an autosomal recessive neurodevelopmental disorder characterized by moderate to severely impaired cognitive development associated with behavioral abnormalities, including autism spectrum disorder. Affected individuals have variable dysmorphic facial features (Al-Amri et al., 2022)</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823979">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823980"><div><strong>Stickler syndrome, type 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823980</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774207</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Stickler syndrome type VI (STL6) is characterized by early-onset progressive hearing loss and progressive myopia, with variable manifestation of facial dysmorphism and skeletal anomalies (Nixon et al., 2019; Rad et al., 2022).&#13; For a general phenotypic description and discussion of genetic heterogeneity of Stickler syndrome, see STL1 (108300).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823980">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823982"><div><strong>Neurodevelopmental disorder with seizures, microcephaly, and brain abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823982</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774209</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with seizures, microcephaly, and brain abnormalities (NEDSMBA) is an autosomal recessive disorder characterized by a core phenotype of moderate to profound developmental delay, progressive microcephaly, epilepsy, and periventricular calcifications (summary by Rosenhahn et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823982">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823985"><div><strong>Developmental and epileptic encephalopathy 106</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823985</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774212</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-106 (DEE106) is an autosomal recessive disorder characterized by the onset of various types of frequent, often refractory, seizures within the first year of life. Affected individuals demonstrate profound global developmental delay with limited ability to move and severely impaired intellectual development with absent speech. Nonspecific brain abnormalities may be observed on MRI (Ni et al., 2021).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823985">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823986"><div><strong>Neurodevelopmental disorder with hypotonia, language delay, and skeletal defects with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823986</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774213</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The clinical manifestations of CACNA1C-related disorders include a spectrum of nonsyndromic and syndromic phenotypes, which generally correlate with the impact of the pathogenic variant on calcium current. Phenotypes can include nonsyndromic long QT syndrome (rate-corrected QT [QTc] interval &gt;480 ms); nonsyndromic short QT syndrome (QTc &lt;350 ms), with risk of sudden death; Brugada syndrome (ST segment elevation in right precordial leads [V1-V2]) with short QT interval; classic Timothy syndrome (prolonged QT interval, autism, and congenital heart defect) with or without unilateral or bilateral cutaneous syndactyly variably involving fingers two (index), three (middle), four (ring), and five (little) and bilateral cutaneous syndactyly of toes two and three; and CACNA1C-related neurodevelopmental disorder, in which the features tend to favor one or more of the following: developmental delay / intellectual disability, hypotonia, epilepsy, and/or ataxia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823986">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823993"><div><strong>Microcephaly 29, primary, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823993</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774220</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive primary microcephaly-29 (MCPH29) is characterized by small head circumference apparent at birth and associated with global developmental delay, impaired intellectual development, speech delay, and behavioral abnormalities. Affected individuals also have poor overall growth with short stature, mild dysmorphic facial features, and seizures (Khan et al., 2020).&#13; For a discussion of genetic heterogeneity of primary microcephaly, see MCPH1 (251200).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823993">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823997"><div><strong>Developmental delay, behavioral abnormalities, and neuropsychiatric disorders</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823997</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774224</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental delay, behavioral abnormalities, and neuropsychiatric disorders (DEDBANP) is a neurodevelopmental disorder characterized by mild global developmental delay and normal or variably impaired intellectual development. Most individuals have behavioral or neuropsychiatric disorders, including autism spectrum disorder (ASD), attention deficit-hyperactivity disorder (ADHD), and executive functioning deficits. Additional features may include speech delay, dysmorphic features, hypotonia, sleep disturbances, and seizures (Vitobello et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823997">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1823998"><div><strong>Neurodevelopmental disorder with microcephaly, cerebral atrophy, and visual impairment</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1823998</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774225</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with microcephaly, cerebral atrophy, and visual impairment (NEDMVIC) is an autosomal recessive disorder characterized by global developmental delay, impaired intellectual development, facial dysmorphism, and microcephaly (Ziegler et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1823998">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824000"><div><strong>Charcot-Marie-Tooth disease, axonal, IIa 2II</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824000</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774227</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Axonal Charcot-Marie-Tooth disease type 2II (CMT2II) is an autosomal dominant neurologic disorder characterized by a slowly progressive sensorimotor peripheral neuropathy affecting mainly the lower limbs, resulting in distal muscle weakness and atrophy and subsequent walking difficulties. Some patients may have upper limb involvement with atrophy of the intrinsic hand muscles. The age at onset is highly variable, ranging from infancy to adulthood. Electrophysiologic studies are usually consistent with an axonal process, although some may show intermediate or even demyelinating values (Park et al., 2020; Ando et al., 2022). One family with possible autosomal recessive inheritance has been reported (Bogdanova-Mihaylova et al., 2021).&#13; For a discussion of genetic heterogeneity of axonal CMT, see CMT2A1 (118210).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824000">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824005"><div><strong>Neurodevelopmental disorder with facial dysmorphism, absent language, and pseudo-pelger-huet anomaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824005</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774232</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with facial dysmorphism, absent language, and pseudo-Pelger-Huet anomaly (NEDFLPH) is an autosomal recessive disorder characterized by global developmental delay with severely impaired intellectual development. Affected individuals often have behavioral abnormalities and may have variable findings on brain imaging, such as thin corpus callosum. Laboratory studies show nuclear lobulation defects in a subset of neutrophils, indicating a pseudo-Pelger-Huet anomaly (see 169400) and suggesting defects in the integrity of the nuclear envelope, where TMEM147 localizes (Thomas et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824005">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824007"><div><strong>Neuronopathy, distal hereditary motor, autosomal dominant 10</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824007</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774234</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant distal hereditary motor neuronopathy-10 (HMND10) is a neurologic disorder of the peripheral nerves characterized clinically by length-dependent motor neuropathy primarily affecting the lower limbs. Affected individuals have onset of distal muscle weakness and atrophy in early childhood that results in walking difficulties and gait abnormalities. Some have pyramidal signs, including hyperreflexia, suggesting the involvement of upper motor neurons. Electrophysiologic studies are consistent with a neurogenic process. More variable features may include mild intellectual disability, minor gyration defects on brain imaging, foot deformities, and connective tissue defects (1 family) (Capuano et al., 2016; Iacomino et al., 2020).&#13; For a discussion of genetic heterogeneity of autosomal dominant distal HMN, see HMND1 (182960).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824007">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824008"><div><strong>Neurodevelopmental disorder with craniofacial dysmorphism and skeletal defects</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824008</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774235</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with craniofacial dysmorphism and skeletal defects (NEDCDS) is characterized by global developmental delay, severely impaired intellectual development with poor or absent speech, characteristic facial features, and variable skeletal abnormalities. Additional features include feeding difficulties, inability to walk or walking with an abnormal gait, and cerebellar or other abnormalities on brain imaging (Reichert et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824008">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824013"><div><strong>Neurodegeneration, childhood-onset, with multisystem involvement due to mitochondrial dysfunction</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824013</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774240</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Childhood-onset neurodegeneration with multisystem involvement due to mitochondrial dysfunction (CONDMIM) is an autosomal recessive syndromic disorder characterized primarily by neurologic deficits. Patients show global developmental delay and variably impaired intellectual development with speech delay apparent from infancy. Affected individuals have hypotonia, poor feeding, poor overall growth, and respiratory distress early in life. Other features include visual impairment due to optic atrophy, sensorineural hearing loss, and neuromuscular abnormalities. The severity is highly variable. The disorder is progressive; about half of patients show developmental regression with loss of previous skills. Features suggestive of a mitochondrial disorder include cataracts, cardiomyopathy, diabetes mellitus, combined oxidative phosphorylation deficiency, and increased lactate. Some patients develop seizures, some have dysmorphic facial features, and some have nonspecific abnormalities on brain imaging. Death in childhood may occur (Kaiyrzhanov et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824013">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824014"><div><strong>Neurodevelopmental disorder with eye movement abnormalities and ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824014</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774241</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with eye movement abnormalities and ataxia (NEDEMA) is characterized by global developmental delay apparent from infancy. Affected individuals show delayed walking with an unsteady gait, variably impaired intellectual development, learning disabilities, and speech difficulties. Abnormal eye movements, which are often noted in early childhood, include opsoclonus, nystagmus, and strabismus. Some patients have seizures, which may be refractory (Lu et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824014">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824015"><div><strong>Developmental delay with variable intellectual disability and dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824015</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774242</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental delay with variable intellectual disability and dysmorphic facies (DIDDF) is a clinically heterogeneous disorder characterized by neurologic deficits and characteristic dysmorphic facial features apparent from infancy or early childhood. Affected individuals usually show impaired intellectual development, speech delay, learning difficulties, and/or behavioral problems. Additional features may include hypotonia, hand or foot deformities, and palatal defects (Verberne et al., 2021; Verberne et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824015">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824021"><div><strong>Orofaciodigital syndrome 19</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824021</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774248</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Orofaciodigital syndrome XIX (OFD19) is an autosomal recessive ciliopathy characterized by tongue nodules; dental anomalies including congenital absence or abnormal shape of incisors; narrow, high-arched or cleft palate; retrognathia; and digital anomalies. Some patients have notching of the upper or lower lip (Iturrate et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824021">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824024"><div><strong>Neurodevelopmental disorder with growth retardation, dysmorphic facies, and corpus callosum abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824024</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774251</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with growth retardation, dysmorphic facies, and corpus callosum abnormalities (NEDGFC) is an autosomal recessive disorder characterized by these cardinal features apparent from infancy. There is phenotypic variability both in disease manifestations and severity. More severely affected individuals are unable to walk independently, are nonverbal, and may have other anomalies, including congenital heart defects, feeding difficulties, or skeletal defects, whereas others show mildly delayed motor and speech acquisition with mild or borderline intellectual disability (summary by von Elsner et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824024">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824025"><div><strong>Neurodevelopmental disorder with speech impairment and with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824025</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774252</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with speech impairment and with or without seizures (NEDSIS) is a phenotypically heterogeneous neurologic disorder whose severity appears to depend on the functional effect of the CACNA1I mutation. Severely affected individuals present in infancy with profound global developmental delay, hypotonia, delayed or absent walking, absent speech, feeding difficulties, cortical visual impairment, and onset of hyperexcitability and seizures in the first months or years of life. They achieve little or no developmental progress and may be tube-fed. Mutations in these individuals occurred de novo. In contrast, a milder phenotype associated with an inherited mutation has been found in a family with mild to moderate cognitive impairment and mild speech delay, usually without seizures (El Ghaleb et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824025">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824026"><div><strong>Developmental and epileptic encephalopathy 108</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824026</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774253</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-108 (DEE108) is characterized by the onset of multiple types of seizures in the first 2 years of life. Affected individuals often have normal early development before the onset of seizures, after which they show developmental regression with loss of skills, particularly language; most are nonverbal or speak only a few words. Other features included mildly delayed walking, unsteady gait, hypotonia, and behavioral abnormalities, such as ADHD or autism (Spinelli et al., 2021).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824026">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824042"><div><strong>Rabin-Pappas syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824042</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774269</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Rabin-Pappas syndrome (RAPAS) is a multisystemic disorder characterized by severely impaired global development apparent from infancy, feeding difficulties with failure to thrive, small head circumference, and dysmorphic facial features. Affected individuals have impaired intellectual development and hypotonia; they do not achieve walking or meaningful speech. Other neurologic findings may include seizures, hearing loss, ophthalmologic defects, and brain imaging abnormalities. There is variable involvement of other organ systems, including skeletal, genitourinary, cardiac, and possibly endocrine (Rabin et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824042">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824044"><div><strong>Intellectual developmental disorder, autosomal dominant 70</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824044</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774271</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant intellectual developmental disorder-70 (MRD70) is characterized by mild global developmental delay, moderately impaired intellectual disability with speech difficulties, and behavioral abnormalities. More variable findings may include hypotonia and dysmorphic features (Rabin et al., 2020)</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824044">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824053"><div><strong>Microcephaly 30, primary, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824053</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774280</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive primary microcephaly-30 (MCPH30) is characterized by small head circumference, poor overall growth, and global developmental delay with variably impaired intellectual development. Affected individuals have been reported to have variable additional congenital anomalies, including atrial septal defect, dysmorphic facial features, tracheal stenosis, and anomalies of the skin and teeth (Carvalhal et al., 2022).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of primary microcephaly, see MCPH1 (251200).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824053">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824058"><div><strong>Neurodevelopmental disorder with hypotonia, dysmorphic facies, and skin abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824058</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774285</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia, dysmorphic facies, and skin abnormalities (NEDHFS) is an autosomal recessive disorder characterized by severe global developmental delay with impaired intellectual development and poor or absent speech. Affected individuals have dysmorphic facies, including large abnormally shaped ears and strabismus, hypotonia, and dry skin with keratosis pilaris. Some patients develop seizures. Metabolic studies are unremarkable (Morava et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824058">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824061"><div><strong>Neurodevelopmental disorder with poor growth, large ears, and dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824061</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774288</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with poor growth, large ears, and dysmorphic facies (NEDGEF) is an autosomal recessive disorder characterized by these features as well as hypotonia and global developmental delay with impaired intellectual development. The severity is variable, even within families. Death in early childhood has been reported in 1 family (Alsaif et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824061">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824083"><div><strong>Tessadori-Van Haaften neurodevelopmental syndrome 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824083</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5774310</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Tessadori-Bicknell-van Haaften neurodevelopmental syndrome-3 (TEBIVANED3) is characterized by global developmental delay with poor overall growth, impaired intellectual development, and speech difficulties. More variable features include hypotonia, microcephaly, and dysmorphic facies. The severity and manifestations of the disorder are highly variable (Tessadori et al., 2022).&#13; For a discussion of genetic heterogeneity of Tessadori-Bicknell-van Haaften neurodevelopmental disorder, see TEBIVANED1 (619758).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824083">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1830493"><div><strong>Hogue-Janssens syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1830493</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5779996</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PPP2R5D-related neurodevelopmental disorder (PPP2R5D-NDD) is characterized by mild-to-profound neurodevelopmental delay, pronounced hypotonia, and macrocephaly. Onset of independent walking varies widely, and ataxia and movement disorders, including early-onset parkinsonism, are reported. Almost all individuals have speech impairment, with a wide range of abilities. Autism spectrum disorder is also reported in some individuals. Seizures and ophthalmologic abnormalities are reported in fewer than half of individuals. Gastrointestinal and skeletal manifestations are reported. Endocrine, cardiac, and genitourinary issues are each reported in a few individuals. To date, more than 100 individuals with PPP2R5D-NDD have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1830493">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1853151"><div><strong>Hao-Fountain syndrome due to USP7 mutation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1853151</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5816734</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1853151">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1840204"><div><strong>Intellectual developmental disorder, X-linked 111</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1840204</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5829568</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">X-linked intellectual developmental disorder-111 (XLID111) is a neurodevelopmental disorder characterized by different degrees of impaired intellectual development associated with motor, speech, and behavioral impairments (El Chehadeh et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1840204">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1840225"><div><strong>Intellectual developmental disorder, X-linked 112</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1840225</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5829589</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked intellectual disorder-112 (XLID112) is a neurodevelopmental disorder characterized by developmental delay, with speech delay more prominent than motor delay, autism or autism traits, and variable dysmorphic features. Affected females have been reported, which appears to be related to skewed X-inactivation (summary by Hiatt et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1840225">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1840880"><div><strong>Neurodevelopmental disorder with hypotonia, dysmorphic facies, and skeletal anomalies, with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1840880</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830244</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">TRPM3-related neurodevelopmental disorder (TRPM3-NDD) is characterized by congenital hypotonia, developmental delay affecting motor and speech/language skills, mild-to-severe intellectual disability, seizures, ophthalmologic manifestations including strabismus, nystagmus, and refractive errors, and musculoskeletal manifestations (e.g., talipes equinovarus, hip dysplasia, scoliosis). Reported seizure types include febrile, absence, generalized tonic-clonic, infantile spasms, and atonic drops. Cerebellar atrophy may be seen on brain MRI.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1840880">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1840932"><div><strong>Neurodevelopmental disorder with seizures, spasticity, and complete or partial agenesis of the corpus callosum</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1840932</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830296</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with seizures, spasticity, and partial or complete agenesis of the corpus callosum (NEDSSCC) is an autosomal recessive disorder characterized by axial hypotonia and global developmental delay apparent from the first days or months of life. Affected individuals often have feeding difficulties and develop early-onset seizures that tend to be well-controlled. Other features include peripheral spasticity with hyperreflexia, variable dysmorphic features, impaired intellectual development, behavioral abnormalities, and hypoplasia or absence of the corpus callosum on brain imaging (Faqeih et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1840932">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841001"><div><strong>Neurodevelopmental disorder with language delay and behavioral abnormalities, with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841001</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830365</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with language delay and behavioral abnormalities, with or without seizures (NEDLBAS), is characterized by global developmental delay with variably impaired intellectual development apparent from infancy or early childhood. Affected individuals have significant speech delay, and most demonstrate behavioral abnormalities, including autistic features. About half of patients develop seizures, which may be controlled or refractory. More variable features include hypotonia, feeding difficulties, and subtle facial dysmorphism (Schalk et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841001">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841013"><div><strong>Neurooculorenal syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841013</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830377</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurooculorenal syndrome (NORS) is an autosomal recessive developmental disorder with highly variable clinical manifestations involving several organ systems. Some affected individuals present in utero with renal agenesis and structural brain abnormalities incompatible with life, whereas others present in infancy with a neurodevelopmental disorder characterized by global developmental delay and dysmorphic facial features that may be associated with congenital anomalies of the kidney and urinary tract (CAKUT). Additional more variable features may include ocular anomalies, most commonly strabismus, congenital heart defects, and pituitary hormone deficiency. Brain imaging usually shows structural midline defects, including dysgenesis of the corpus callosum and hindbrain. There is variation in the severity, manifestations, and expressivity of the phenotype, even within families (Rasmussen et al., 2018; Munch et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841013">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841049"><div><strong>Neurodevelopmental disorder with microcephaly and speech delay, with or without brain abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841049</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830413</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with microcephaly and speech delay, with or without brain abnormalities (NEDMSBA) is an autosomal recessive disorder characterized by global developmental delay, hypotonia, delayed or absent walking, impaired intellectual development, and poor or absent speech, apparent from early infancy. Affected individuals have postnatal progressive microcephaly and may show poor overall growth and dysmorphic facial features. Additional more variable features include cortical visual impairment, seizures, hypotonia, spasticity, and sensorineural deafness. Brain imaging is abnormal in most patients, showing myelination defects, cortical atrophy, or thin corpus callosum. There is phenotypic variability, even within families (Bogershausen et al., 2022; Lin et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841049">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841060"><div><strong>Congenital myopathy 21 with early respiratory failure</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841060</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830424</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital myopathy-21 with early respiratory failure (CMYO21) is an autosomal recessive muscle disorder associated with diaphragmatic weakness and spinal rigidity. The age at symptom onset is highly variable, ranging from infancy to adulthood; the severity of the respiratory impairment, which can lead to death in the most severe cases, is also variable. Additional features, including developmental delay and hypertrophic cardiomyopathy, have been observed in one patient each (Weihl et al., 2023; Al-Kasbi et al., 2022).&#13; For a discussion of genetic heterogeneity of congenital myopathy, see CMYO1A (117000).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841060">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841073"><div><strong>Intellectual developmental disorder, autosomal dominant 71, with behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841073</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830437</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant intellectual developmental disorder-71 with behavioral abnormalities (MRD71) is a neurodevelopmental disorder characterized by global developmental delay with hypotonia, speech delay, and variably impaired cognitive development. Almost all affected individuals show marked behavioral manifestations, including autism spectrum disorder (ASD), ADHD, hypersensitivity, and aggression. Many have dysmorphic features, although there is not a common gestalt (Harris et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841073">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841116"><div><strong>Mitochondrial complex V (ATP synthase) deficiency, nuclear type 4A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841116</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830480</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex V deficiency nuclear type 4A (MC5DN4A) is an autosomal dominant metabolic disorder characterized by poor feeding and failure to thrive in early infancy. Laboratory studies show increased serum lactate, alanine, and ammonia, suggesting mitochondrial dysfunction. Some affected individuals show spontaneous resolution of these symptoms in early childhood and have subsequent normal growth and development, whereas others show developmental delay with impaired intellectual development and movement abnormalities, including dystonia, ataxia, or spasticity; these neurologic deficits are persistent (Lines et al., 2021, Zech et al., 2022).&#13; For a discussion of genetic heterogeneity of mitochondrial complex V deficiency, nuclear types, see MC5DN1 (604273).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841116">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841210"><div><strong>Spastic paraplegia 90A, autosomal dominant</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841210</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830574</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant spastic paraplegia-90A (SPG90A) is characterized by motor impairment and progressive lower extremity spasticity as well as neurologic findings, cognitive impairment, and hearing loss (Srivastava et al., 2023).&#13; For a discussion of genetic heterogeneity of autosomal dominant SPG, see SPG3A (182600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841210">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841214"><div><strong>Spastic paraplegia 90B, autosomal recessive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841214</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830578</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive spastic paraplegia-90B (SPG90B) is characterized by motor impairment and progressive lower extremity spasticity as well as neurologic findings, cognitive impairment, and hearing loss (Srivastava et al., 2023).&#13; For a discussion of genetic heterogeneity of autosomal recessive SPG, see SPG5A (270800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841214">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841228"><div><strong>Dystonia 37, early-onset, with striatal lesions</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841228</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830592</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Early-onset dystonia-37 with striatal lesions (DYT37) is an autosomal recessive neurologic movement disorder characterized by the onset of progressive dystonia, dysphagia, and choreoathetosis in the first months or years of life. Affected individuals show delayed motor development and may have impaired intellectual development. The disorder is severely disabling; patients lose ambulation and require tube-feeding. Brain imaging shows hyperintense lesions affecting the basal ganglia and striatum (Harrer et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841228">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841260"><div><strong>Neurodevelopmental disorder with microcephaly and movement abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841260</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830624</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with microcephaly and movement abnormalities (NEDMIM) is an autosomal recessive disorder characterized by global developmental delay, impaired intellectual development with poor or absent speech, and delayed walking with an abnormal gait. Affected individuals may show hypotonia or hypertonia with spasticity, ataxia, and choreoathetoid movements. Most patients have microcephaly and short stature. Ophthalmic features, behavioral abnormalities, and nonspecific dysmorphic features are commonly observed. Additional more variable features include seizures, brain imaging abnormalities, and skeletal defects (Serey-Gaut et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841260">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841264"><div><strong>Megalencephalic leukoencephalopathy with subcortical cysts 4, remitting</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841264</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830628</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Remitting megalencephalic leukoencephalopathy with subcortical cysts-4 (MLC4) is an autosomal recessive neurologic disorder characterized by macrocephaly in infancy associated with developmental delay, delayed walking, variable cognitive decline, behavioral abnormalities, and early-onset seizures. The severity of neurologic dysfunction is variable, even within a family, but tends to show improvement with time. Brain imaging shows swelling of the cerebral white matter and subcortical cysts in the anterior temporal region, consistent with MLC. Brain imaging abnormalities also tend to improve with time, indicating a remitting disease course (Passchier et al., 2023).&#13; For a discussion of genetic heterogeneity of megalencephalic leukoencephalopathy with subcortical cysts, see MLC1 (604004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841264">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841272"><div><strong>Intellectual developmental disorder, autosomal dominant 73</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841272</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830636</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant intellectual developmental disorder-73 (MRD73) is a highly variable neurodevelopmental disorder characterized by impaired intellectual development that ranges from mild to severe, speech delay, behavioral abnormalities, and nonspecific dysmorphic facial features (Janssen et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841272">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841277"><div><strong>Combined oxidative phosphorylation deficiency 58</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841277</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830641</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Combined oxidative phosphorylation deficiency-58 (COXPD58) is an autosomal recessive disorder characterized by a wide range of clinical presentations including neonatal lactic acidosis, epileptic encephalopathy, developmental delay and impaired intellectual development with nonspecific changes on brain MRI, or mitochondrial myopathy with a treatable neuromuscular transmission defect (Van Haute et al., 2023).&#13; For a discussion of genetic heterogeneity of combined oxidative phosphorylation deficiency, see COXPD1 (609060).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841277">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841290"><div><strong>Neurodevelopmental disorder with hypotonia and speech delay, with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841290</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5830654</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia and speech delay, with or without seizures (NEDHSS) is characterized by global developmental delay, impaired intellectual development with poor or absent speech, and fine and gross motor delay. Most affected individuals are severely affected and may be unable to walk, have feeding difficulties requiring tube-feeding, and develop early-onset seizures. Additional features may include cortical blindness and nonspecific structural brain abnormalities. Rare individuals present only with hypotonia and mild developmental delay (Paul et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841290">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1849943"><div><strong>Lui-Jee-Baron syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1849943</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882664</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Lui-Jee Baron syndrome (LJBS) is a generalized overgrowth disorder of prenatal onset characterized by extreme tall stature, enlarged liver and spleen, macrocephaly, dysmorphic features, and normal development. Hemizygous males are more severely affected than heterozygous females (Lui et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1849943">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1847911"><div><strong>Epilepsy, early-onset, 3, with or without developmental delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1847911</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882674</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Early-onset epilepsy-3 with or without developmental delay (EPEO3) is an autosomal dominant neurologic disorder characterized by the onset of various types of seizures in the first months or years of life. Many patients present with febrile seizures and later develop afebrile seizures. The severity and disease course is highly variable: some affected individuals have global developmental delay or regression with impaired intellectual development, poor or absent speech, and motor delay, whereas others have normal psychomotor development. More severely affected individuals often show additional features, including hypotonia, gait ataxia, nonspecific dysmorphic features, behavioral abnormalities, and variable anomalies on brain imaging (Mattison et al., 2023, Zhao et al., 2023).&#13; For a discussion of genetic heterogeneity of EPEO, see 617290.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1847911">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1845571"><div><strong>Parkinson disease 25, autosomal recessive early-onset, with impaired intellectual development</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1845571</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882680</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Parkinson disease-25 (PARK25) is a progressive neurodegenerative disorder characterized by onset of parkinsonism in late childhood/adolescence and developmental delay/impaired intellectual development. Cognitive impairment is mild to moderate and nonprogressive (Fevga et al., 2023).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Parkinson disease, see 168600.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1845571">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1849794"><div><strong>Variegate porphyria, childhood-onset</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1849794</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882681</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Childhood-onset variegate porphyria (VPCO), also called 'homozygous' variegate porphyria, is a rare disorder of heme biosynthesis characterized by severe PPOX deficiency, onset of photosensitization by porphyrins in early childhood, skeletal abnormalities of the hand, and, less consistently, short stature, impaired intellectual development, and seizures. The term 'homozygous' refers to the presence of mutations on both alleles of the PPOX gene, resulting in earlier onset and more severe manifestations than those seen in variegate porphyria (VP), a low-penetrance disorder inherited as an autosomal dominant trait (summary by Roberts et al., 1998). Heterozygous family members of VPCO patients are usually clinically silent, but symptomatic heterozygotes have been reported (Mustajoki et al., 1987; Palmer et al., 2001; Kauppinen et al., 2001).&#13; Nomenclature&#13; 'Homozygous' variegate porphyria was so designated before the molecular defect in PPOX was elucidated, on the basis of severe reduction in PPOX activity (between 5 and 20% of control values) compared to that seen in variegate porphyria (approximately 50% reduction), in which autosomal dominant transmission had been observed. It is probable that most cases of 'homozygous' variegate porphyria actually result from compound heterozygosity for PPOX mutations (Frank et al., 1998; Palmer et al., 2001).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1849794">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1847194"><div><strong>Neurodevelopmental disorder with impaired language, behavioral abnormalities, and dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1847194</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882686</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with impaired language, behavioral abnormalities, and dysmorphic facies (NEDLBF) is characterized by global developmental delay, speech delay, variably impaired intellectual development, behavioral abnormalities, and dysmorphic facial features. The phenotype and severity of the disorder is heterogeneous, ranging from borderline to severe. Brain imaging is usually normal. More variable additional features include early feeding difficulties, failure to thrive, short stature, mild visual impairment, hypotonia, seizures (particularly febrile), and distal skeletal defects of the hands and feet (Jia et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1847194">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1850358"><div><strong>Neurodevelopmental disorder with language delay and variable cognitive abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1850358</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882689</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with language delay and variable cognitive abnormalities (NEDLC) is a phenotypically heterogeneous neurologic disorder. Affected individuals may show early motor delay, speech and language delay, impaired intellectual development, learning disabilities, and/or behavioral abnormalities, although the severity and manifestations vary widely. Repetitive behavior and sleep difficulties are commonly present. More severe features include seizures, hypotonia, ocular abnormalities, dysmorphic features, and psychiatric comorbidities (Cediel et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1850358">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1845438"><div><strong>Fliedner-Zweier syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1845438</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882693</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fliedner-Zweier syndrome (FZS) is a neurodevelopmental disorder characterized by variable manifestations including mild intellectual disability, seizures, behavioral abnormalities, and various skeletal and structural anomalies (Fliedner et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1845438">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1844217"><div><strong>Spastic paraplegia 18a, autosomal dominant</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1844217</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882694</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia-18A (SPG18A) is an autosomal dominant disorder characterized by a pure form of hereditary spastic paraplegia phenotype (summary by Rydning et al., 2018).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1844217">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1847702"><div><strong>Arrhythmogenic cardiomyopathy with variable ectodermal abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1847702</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882696</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Arrhythmogenic cardiomyopathy with variable ectodermal abnormalities (ARCME) is characterized by severe dilated cardiomyopathy resulting in death or cardiac transplantation in childhood. Ventricular tachycardia, sustained or nonsustained, has been reported. In addition, some patients exhibit ectodermal manifestations including woolly or wiry hair, dental anomalies, dry skin, and/or dystrophic nails. Cleft lip and palate and corneal abnormalities have also been observed (Robinson et al., 2020; Henry et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1847702">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1845523"><div><strong>Developmental and epileptic encephalopathy 112</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1845523</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882700</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-112 (DEE112) is an autosomal dominant disorder characterized by a wide range of seizure types, including focal and generalized seizures. Cognitive outcomes range from normal intellect to profound impairment (summary by Happ et al., 2023).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1845523">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1846222"><div><strong>Spastic paraplegia 91, autosomal dominant, with or without cerebellar ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1846222</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882701</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant spastic paraplegia-91 with or without cerebellar ataxia (SPG91) is a highly variable neurologic disorder characterized by early-onset gait abnormalities due to spastic paraplegia of the lower limbs, sometimes with cerebellar ataxia. The age at onset is highly variable (congenital to young adult), although most patients have symptom onset in the first decade. Some patients present with a spastic paraplegia-predominant phenotype with significant pyramidal signs, whereas others present with an ataxic-predominant phenotype. In addition, although most patients have a more 'pure' phenotype restricted to gait abnormalities without additional features, others have a more 'complicated' phenotype with additional features such as sensory abnormalities, peripheral neuropathy, optic neuropathy, developmental delay, variably impaired intellectual development, and seizures. Many have normal brain imaging, but cerebellar atrophy may be observed in those with prominent cerebellar ataxia (Van de Vondel et al., 2022).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of autosomal dominant spastic paraplegia, see SPG3A (182600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1846222">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1848555"><div><strong>Developmental delay with or without epilepsy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1848555</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882702</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental delay with or without epilepsy (DEVEP) is a clinically heterogeneous neurodevelopmental disorder characterized by motor delay, speech delay, and variably impaired intellectual development apparent from infancy or early childhood. Hypotonia and behavioral abnormalities are common. About half of affected individuals develop various types of seizures that are not as severe as observed in the allelic disorder DEE5. In general, the phenotype is similar to but milder than DEE5. Some individuals with DEVEP have ataxia or nystagmus associated with cerebellar atrophy on brain imaging, indicating phenotypic overlap with the allelic disorder SPG91 (Morsy et al., 2023).&#13; In a study of 31 individuals with SPTAN1 mutations, Morsy et al. (2023) delineated 3 distinct phenotypic subgroups: DEE5; a milder phenotype of developmental delay with or without seizures (DEVEP); and pure or complicated spastic paraplegia/ataxia (SPG91). Syrbe et al. (2017) similarly emphasized the remarkably broad phenotypic spectrum of neurologic disorders associated with heterozygous SPTAN1 mutations in their cohort study.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1848555">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1847896"><div><strong>Arthrogryposis, distal, type 12</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1847896</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882704</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Distal arthrogryposis type 12 (DA12) is characterized by congenital contractures, primarily affecting the small joints of the fingers and toes. Additional features include contractures of the knees and Achilles tendons, spinal stiffness, scoliosis, and orthodontic abnormalities. Radiographic investigations excluded bony abnormalities of the affected joints (Boschann et al., 2022).&#13; For a general phenotypic description and discussion of genetic heterogeneity of distal arthrogryposis, see DA1A (108120).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1847896">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1846347"><div><strong>Congenital disorder of glycosylation, type IIbb</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1846347</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882705</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital disorder of glycosylation type IIbb (CDG2BB) is an autosomal recessive disorder characterized by global developmental delay, severely impaired intellectual development, microcephaly, epilepsy, facial dysmorphism, and variable neurologic findings (Duan et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1846347">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1848930"><div><strong>Cornelia de Lange syndrome 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1848930</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882712</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cornelia de Lange syndrome (CdLS) encompasses a spectrum of findings from mild to severe. Severe (classic) CdLS is characterized by distinctive facial features, growth restriction (prenatal onset; &lt;5th centile throughout life), hypertrichosis, and upper-limb reduction defects that range from subtle phalangeal abnormalities to oligodactyly (missing digits). Craniofacial features include synophrys, highly arched and/or thick eyebrows, long eyelashes, short nasal bridge with anteverted nares, small widely spaced teeth, and microcephaly. Individuals with a milder phenotype have less severe growth, cognitive, and limb involvement, but often have facial features consistent with CdLS. Across the CdLS spectrum IQ ranges from below 30 to 102 (mean: 53). Many individuals demonstrate autistic and self-destructive tendencies. Other frequent findings include cardiac septal defects, gastrointestinal dysfunction, hearing loss, myopia, and cryptorchidism or hypoplastic genitalia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1848930">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1847098"><div><strong>Progressive external ophthalmoplegia with mitochondrial dna deletions, autosomal recessive 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1847098</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882731</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive progressive external ophthalmoplegia-6 (PEOB6) is characterized by ptosis and ophthalmoplegia as well as other clinical manifestations and multiple mtDNA deletions in muscle (Shintaku et al., 2022).&#13; For a discussion of genetic heterogeneity of autosomal recessive PEO, see PEOB1 (258450).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1847098">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1850178"><div><strong>Intellectual developmental disorder, autosomal recessive 80, with variant lissencephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1850178</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882733</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive intellectual developmental disorder-80 with variant lissencephaly (MRT80) is characterized by global developmental delay with mildly to moderately impaired intellectual development and behavioral abnormalities. Speech delay and motor abnormalities, such as hypotonia, may also be present. Brain imaging shows lissencephaly with pachygyria and mild cortical thickening in the frontotemporal lobes (Uctepe et al., 2024).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1850178">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1845825"><div><strong>Alfadhel syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1845825</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882735</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Alfadhel syndrome (AFDL) is an autosomal recessive neurodevelopmental disorder with features of global developmental delay, hypotonia, and facial dysmorphism (Asiri et al., 2020, Bertoli-Avella et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1845825">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1846017"><div><strong>Hoxha-Aliu syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1846017</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882736</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hoxha-Aliu syndrome (HXAL) is characterized by mildly impaired intellectual development and digital anomalies of the hands and feet (Hoxha and Aliu, 2023; Guo et al., 2023).&#13; Biallelic missense mutations in the ERI1 gene have been reported to cause a more severe bone disorder, spondyloepimetaphyseal dysplasia, Guo-Campeau type (SEMDGC; 620663).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1846017">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1844202"><div><strong>Spondyloepimetaphyseal dysplasia, Guo-Campeau type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1844202</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882737</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The Guo-Campeau type of spondyloepimetaphyseal dysplasia (SEMDGC) is characterized by severe bone dysplasia resulting in significant short stature with variable anomalies of the spine, pelvis, hips, and extremities, including short, rudimentary, or absent digits. Patients also exhibit variable facial dysmorphisms (Guo et al., 2023).&#13; Biallelic null mutations in the ERI1 gene have been reported to cause a less severe disorder, Hoxha-Alia syndrome, involving digital anomalies and mild intellectual disability (HXAL; 620662).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1844202">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1844996"><div><strong>Leukodystrophy, hypomyelinating, 27</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1844996</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882743</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypomyelinating leukodystrophy-27 (HLD27) is an autosomal recessive neurologic disorder characterized by global developmental delay with impaired motor and intellectual development apparent from infancy. Affected individuals have poor or absent speech, ataxic gait or inability to sit or walk, spasticity, and abnormal eye movements (nystagmus, gaze palsy). Some patients have seizures. Disease progression and developmental regression consistent with neurodegeneration is often observed. Brain imaging shows progressive hypomyelinating leukodystrophy, cerebral and cerebellar atrophy, and thin corpus callosum (Misceo et al., 2023).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of HLD, see 312080.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1844996">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1845936"><div><strong>Lipodystrophy, familial partial, type 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1845936</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882746</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Familial partial lipodystrophy type 9 (FPLD9) is an autosomal recessive metabolic disorder characterized by the loss of adipose tissue resulting in a lean appearance with muscular hypertrophy, usually most apparent in the limbs and trunk. Some patients have more generalized lipoatrophy, whereas others have abnormal fat accumulation in the face and neck regions and show cushingoid or acromegalic facial features. The disorder is associated with insulin-resistant diabetes mellitus, dyslipidemia, low HDL, and hepatic steatosis. Symptom onset is usually in the first decade. Females tend to have hirsutism and polycystic ovary syndrome, whereas males have gynecomastia. Most patients also have neurologic involvement, including demyelinating polyneuropathy (in most) and delayed development with intellectual disability (in about half) (Schuermans et al., 2023).&#13; For a discussion of genetic heterogeneity of familial partial lipodystrophy (FPLD), see 151660.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1845936">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1863661"><div><strong>Neuroocular syndrome 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1863661</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5925133</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neuroocular syndrome-1 (NOC1) encompasses a broad spectrum of overlapping anomalies, with developmental delay or impaired intellectual development as a consistent finding. Eye abnormalities show marked variability in the type and severity of defects, and include anophthalmia, microphthalmia, and coloboma. Other common systemic features include congenital heart and kidney defects, hypotonia, failure to thrive, and microcephaly (summary by Chowdhury et al., 2021).&#13; Genetic Heterogeneity of Neuroocular Syndrome&#13; See also NOC2 (168885), caused by mutation in the DAGLA gene (614015) on chromosome 11q12.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1863661">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1854940"><div><strong>Intellectual developmental disorder, x-linked, syndromic 37</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1854940</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935567</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked syndromic intellectual developmental disorder-37 (MRXS37) is a developmental disorder showing phenotypic variability and variable severity. Male mutation carriers tend to be more severely affected than female mutation carriers, some of whom may even be asymptomatic. In general, the disorder is characterized by global developmental delay with delayed walking, speech delay, impaired intellectual development that ranges from borderline low to moderate, and behavioral abnormalities, such as autism and sleeping difficulties. Many patients are able to attend mainstream schools with assistance and work under supervision. Additional more variable features include sensorineural hearing loss, ocular anomalies, feeding difficulties, dysmorphic facial features, inguinal and umbilical hernia, genitourinary defects, congenital heart defects, musculoskeletal anomalies, and endocrine dysfunction, such as hypogonadism or hyperparathyroidism (Shepherdson et al., 2024).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1854940">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1859300"><div><strong>Ullrich congenital muscular dystrophy 1B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1859300</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935582</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Collagen VI-related dystrophies (COL6-RDs) represent a continuum of overlapping clinical phenotypes with Bethlem muscular dystrophy at the milder end, Ullrich congenital muscular dystrophy (UCMD) at the more severe end, and a phenotype in between UCMD and Bethlem muscular dystrophy, referred to as intermediate COL6-RD. Bethlem muscular dystrophy is characterized by a combination of proximal muscle weakness and joint contractures. Hypotonia and delayed motor milestones occur in early childhood; mild hypotonia and weakness may be present congenitally. By adulthood, there is evidence of proximal weakness and contractures of the elbows, Achilles tendons, and long finger flexors. The progression of weakness is slow, and more than two thirds of affected individuals older than age 50 years remain independently ambulatory indoors, while relying on supportive means for mobility outdoors. Respiratory involvement is not a consistent feature. UCMD is characterized by congenital weakness, hypotonia, proximal joint contractures, and striking hyperlaxity of distal joints. Decreased fetal movements are frequently reported. Some affected children acquire the ability to walk independently; however, progression of the disease results in a loss of ambulation by age ten to eleven years. Early and severe respiratory insufficiency occurs in all individuals, resulting in the need for nocturnal noninvasive ventilation (NIV) in the form of bilevel positive airway pressure (BiPAP) by age 11 years. Intermediate COL6-RD is characterized by independent ambulation past age 11 years and respiratory insufficiency that is later in onset than in UCMD and results in the need for NIV in the form of BiPAP by the late teens to early 20s. In contrast to individuals with Bethlem muscular dystrophy, those with intermediate COL6-RD typically do not achieve the ability to run, jump, or climb stairs without use of a railing.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1859300">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1861332"><div><strong>Hearing loss, autosomal recessive 123</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1861332</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935588</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive deafness-123 (DFNB123) is characterized by nonsyndromic bilateral severe to profound hearing impairment, with onset as early as the first decade of life (Schrauwen et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1861332">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1857802"><div><strong>Neurodevelopmental disorder with early-onset parkinsonism and behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1857802</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935590</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with early-onset parkinsonism and behavioral abnormalities (NEDPBA) is an autosomal recessive disorder characterized by delayed developmental milestones apparent in late infancy or early childhood, impaired intellectual development with learning difficulties, and behavioral abnormalities. Motor abnormalities, including parkinsonism and spasticity, usually develop in the third or fourth decades, although earlier onset has been reported. Some patients have seizures. There is inter- and intrafamilial variability (Kuipers et al., 2018; Al-Kasbi et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1857802">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1855924"><div><strong>Megalencephaly-polydactyly syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1855924</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935591</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Megalencephaly-polydactyly syndrome (MPAPA) is an autosomal dominant disorder characterized by megalencephaly, ventriculomegaly, postaxial polydactyly, and, notably, neuroblastoma during infancy (summary by Nishio et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1855924">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1855399"><div><strong>Seckel syndrome 11</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1855399</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935595</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Seckel syndrome-11 (SCKL11) is characterized by severe primary microcephaly, short stature, developmental delay, impaired intellectual development, facial dysmorphisms, and digital abnormalities (Li et al., 2024).&#13; For a general phenotypic description and discussion of genetic heterogeneity of Seckel syndrome, see SCKL1 (210600).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1855399">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1860189"><div><strong>Developmental and epileptic encephalopathy 114</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1860189</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935598</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-114 (DEE114) is characterized by moderately to severely impaired intellectual development, onset of epilepsy within the first 18 months of life, and a choreiform, dystonic, or dyskinetic movement disorder (Platzer et al., 2022).&#13; For general phenotypic information and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1860189">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1856296"><div><strong>Thrombocytopenia 13, syndromic</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1856296</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935599</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndromic thrombocytopenia-13 (THC13) is an autosomal recessive disorder characterized mainly by congenital thrombocytopenia resulting in increased bleeding. Platelets tend to be enlarged (macrothrombocytopenia) and/or gray and show functional defects. Some patients have infection-induced leukopenia or anemia and pancytopenia. Additional more variable features have also been reported, including mitral valve malformations, pyloric stenosis, and impaired intellectual development (Seo et al., 2019; Febres-Aldana et al., 2020; Marin-Quilez et al., 2023).&#13; For a discussion of genetic heterogeneity of thrombocytopenia, see THC1 (313900).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1856296">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1858975"><div><strong>Intellectual developmental disorder, autosomal recessive 82</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1858975</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935601</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive intellectual developmental disorder-82 (MRT82) is characterized by global developmental delay with motor and speech delay, variably impaired intellectual development, and behavioral abnormalities (Mattioli et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1858975">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1858870"><div><strong>Developmental and epileptic encephalopathy 115</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1858870</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935604</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-115 (DEE115) is an autosomal recessive disorder characterized by severe developmental delay and epileptic encephalopathy, massive reduction of white matter, hypo-/aplasia of the corpus callosum, neurodevelopmental arrest, and early death (Brugger et al., 2024).&#13; For general phenotypic information and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1858870">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1859522"><div><strong>Neurodevelopmental disorder plus optic atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1859522</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935605</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder plus optic atrophy (NEDOA) is an autosomal recessive disorder characterized by impaired intellectual development and childhood-onset optic atrophy or ataxia (Brugger et al., 2024).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1859522">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1861039"><div><strong>Autosomal recessive nonsyndromic hearing loss 124</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1861039</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935612</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive deafness-124 (DFNB124) is characterized by congenital nonsyndromic progressive sensorineural hearing loss (Redfield et al., 2024).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1861039">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1863287"><div><strong>El Hayek-Chahrour neurodevelopmental disorder</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1863287</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935620</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">El Hayek-Chahrour neurodevelopmental disorder (NEDEHC) is characterized by absent speech, impaired intellectual development, and autism (El Hayek et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1863287">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1854654"><div><strong>Neurodevelopmental disorder with hypotonia, brain anomalies, distinctive facies, and absent language</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1854654</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935628</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ReNU syndrome (RENU), also known as neurodevelopmental disorder with hypotonia, brain anomalies, distinctive facies, and absent language (NEDHAFA), is characterized by hypotonia, global developmental delay, severely impaired intellectual development with poor or absent speech, delayed walking or inability to walk, feeding difficulties with poor overall growth, seizures (in most), dysmorphic facial features, and brain anomalies, including ventriculomegaly, thin corpus callosum, and progressive white matter loss (Greene et al., 2024; Schot et al., 2024; Chen et al., 2024).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1854654">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1857550"><div><strong>Neurodevelopmental disorder with hypotonia, feeding difficulties, facial dysmorphism, and brain abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1857550</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935629</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia, feeding difficulties, facial dysmorphism, and brain abnormalities (NEDHFDB) is an autosomal recessive disorder characterized by poor overall growth apparent from infancy, global developmental delay with motor delay, and severely impaired intellectual development with poor or absent speech. Additional features include feeding difficulties, dysmorphic facies, variable congenital heart defects, and brain imaging abnormalities, usually hypoplasia of the corpus callosum (Engal et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1857550">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1856205"><div><strong>Neuronopathy, distal hereditary motor, autosomal recessive 11, with spasticity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1856205</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935630</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive distal hereditary motor neuropathy-11 with spasticity (HMNR11) is characterized by onset of slowly progressive distal muscle weakness and atrophy and spasticity of the lower limbs in the first decade of life. Affected individuals have difficulty walking, although ambulation is retained into adulthood. There is usually upper limb involvement. Some patients have foot deformities. Electrophysiologic studies are consistent with a length-dependent axonal motor neuropathy (Maroofian et al., 2024).&#13; For a discussion of genetic heterogeneity of autosomal recessive HMN, see HMNR1 (604320).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1856205">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1857169"><div><strong>Neuromuscular disorder, congenital, with dysmorphic facies</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1857169</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935643</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital neuromuscular disorder with dysmorphic facies (NMDF) is an autosomal recessive disorder characterized by impaired skeletal muscle development, usually resulting in hypotonia and secondary joint contractures, and dysmorphic facial features. Features are apparent from birth. Affected individuals may show motor delay, speech delay, and impaired intellectual development. The severity of the disorder is highly variable (Schnabel et al., 2023; Roos et al., 2023).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1857169">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1856346"><div><strong>Spinal muscular atrophy with microcephaly and mental subnormality</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1856346</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935682</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1856346">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_989503"><div><strong>Congenital disorder of deglycosylation 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>989503</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier assigned by MedGen (starting with CN) for terms&#10;that cannot be identified in NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">CN306977</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Individuals with NGLY1-related congenital disorder of deglycosylation (NGLY1-CDDG) typically display a clinical tetrad of developmental delay / intellectual disability in the mild to profound range, hypo- or alacrima, elevated liver transaminases that may spontaneously resolve in childhood, and a complex hyperkinetic movement disorder that can include choreiform, athetoid, dystonic, myoclonic, action tremor, and dysmetric movements. About half of affected individuals will develop clinical seizures. Other findings may include obstructive and/or central sleep apnea, oral motor defects that affect feeding ability, auditory neuropathy, constipation, scoliosis, and peripheral neuropathy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/989503">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1052640"><div><strong>Neurodevelopmental disorder with motor abnormalities, seizures, and facial dysmorphism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1052640</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier assigned by MedGen (starting with CN) for terms&#10;that cannot be identified in NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">CN376901</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with motor abnormalities, seizures, and facial dysmorphism (NEDMSF) is characterized by global developmental delay, poor overall growth, early-onset seizures (in most patients), severely impaired motor development with hypotonia and/or ataxia, and dysmorphic facial features. Affected individuals have impaired intellectual development, which can be severe. Brain imaging may show thin corpus callosum, enlarged ventricles, or cerebellar atrophy (Gennarino et al., 2018; Voet et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1052640">Condition Record</a></div></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_64512" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">11p partial monosomy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162878" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">11q partial monosomy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_390767" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">15q11q13 microduplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_930899" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">15q14 microdeletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78691" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">3-methylcrotonyl-CoA carboxylase 1 deficiency</a></div><div class="jig-moreless" data-jigconfig="class: 'moveDown', moreText: 'See full list (1527)', lessText: 'Show less', nodeBefore: 0"><span id="clinMore">
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<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_873604" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">3-methylglutaconic aciduria with deafness, encephalopathy, and Leigh-like syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1810214" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">3-methylglutaconic aciduria, type VIIB</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_395592" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">3M syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167100" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">3MC syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167115" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">3MC syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208657" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">3MC syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1643555" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">3p- syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_41345" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">5p partial monosomy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_61234" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Aarskog syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_66358" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Abortive cerebellar ataxia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_349753" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Achalasia microcephaly syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162915" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acrocallosal syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_334681" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acrocapitofemoral dysplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_324947" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acrocardiofacial syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_7858" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acrocephalosyndactyly type I</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_477858" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acrodysostosis 1 with or without hormone resistance</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766164" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acrodysostosis 2 with or without hormone resistance</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_903483" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acrofacial dysostosis Cincinnati type</a></div>
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<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167116" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acromegaloid facial appearance syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_350933" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acromelic frontonasal dysostosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355199" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acromesomelic dysplasia 1, Maroteaux type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1635567" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Adams-Oliver syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78641" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Adenylosuccinate lyase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862975" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">ADNP-related multiple congenital anomalies - intellectual disability - autism spectrum disorder</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347986" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Agenesis of cerebral white matter</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1718475" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Agenesis of corpus callosum, cardiac, ocular, and genital syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162893" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Agenesis of the corpus callosum with peripheral neuropathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862856" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">AHDC1-related intellectual disability - obstructive sleep apnea - mild dysmorphism syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_854829" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Aicardi-Goutieres syndrome 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1611968" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Al Kaissi syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1640947" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Alacrima, achalasia, and intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934669" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Alazami-Yuan syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1720006" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">ALDH18A1-related de Barsy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815939" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Aldosterone-producing adenoma with seizures and neurological abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1845825" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Alfadhel syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_443955" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">ALG9 congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1634304" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Alkuraya-Kucinskas syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_372142" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Alopecia-intellectual disability syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1713432" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Alopecia-intellectual disability syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337145" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Alpha thalassemia-X-linked intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337424" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Alport syndrome-intellectual disability-midface hypoplasia-elliptocytosis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_762361" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Alternating hemiplegia of childhood 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766702" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Alternating hemiplegia of childhood 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1754257" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">AMED syndrome, digenic</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98036" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Amelocerebrohypohidrotic syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347955" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Amino aciduria with mental deficiency, dwarfism, muscular dystrophy, osteoporosis, and acidosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347240" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Amyloidosis of gingiva and conjunctiva, with intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_354871" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Amyotrophic dystonic paraplegia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1638106" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Anauxetic dysplasia 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_394313" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">ANE syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_9646" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Angioosteohypertrophic syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347952" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Aniridia-renal agenesis-psychomotor retardation syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98032" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ankyloblepharon-ectodermal defects-cleft lip/palate syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_422448" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Antley-Bixler syndrome without genital anomalies or disordered steroidogenesis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_350734" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Aortic arch anomaly-facial dysmorphism-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_324958" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Aphalangy-syndactyly-microcephaly syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78688" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Arginase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436367" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Arginine:glycine amidinotransferase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78687" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Argininosuccinate lyase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_375800" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Armfield syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355084" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Arrhinia with choanal atresia and microphthalmia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1847702" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Arrhythmogenic cardiomyopathy with variable ectodermal abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347942" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Arterial tortuosity syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648372" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Arthrogryposis, cleft palate, craniosynostosis, and impaired intellectual development</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1847896" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Arthrogryposis, distal, type 12</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_113099" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Arthrogryposis, distal, type 1A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_350678" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Arthrogryposis- oculomotor limitation-electroretinal anomalies syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163205" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Arts syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78649" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Aspartylglucosaminuria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208659" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ataxia - deafness - intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_395312" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ataxia, deafness, and cardiomyopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_900671" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Au-Kline syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_13966" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816240" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autism spectrum disorder - epilepsy - arthrogryposis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862872" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autism spectrum disorder due to AUTS2 deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_334211" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autism, susceptibility to, 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_409897" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autism, susceptibility to, 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335205" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autism, susceptibility to, X-linked 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335161" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autism, susceptibility to, X-linked 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162886" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autism, susceptibility to, X-linked 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1669929" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_382676" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant deafness - onychodystrophy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_382033" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant familial hematuria-retinal arteriolar tortuosity-contractures syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_903767" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant intellectual disability-craniofacial anomalies-cardiac defects syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1373312" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant Kenny-Caffey syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_324932" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant nocturnal frontal lobe epilepsy 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767220" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant nocturnal frontal lobe epilepsy 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_896665" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant nonsyndromic hearing loss 40</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1641736" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal dominant Robinow syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436985" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive ataxia due to ubiquinone deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1800403" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive complex spastic paraplegia type 9B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_414526" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive cutis laxa type 2B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341637" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive faciodigitogenital syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_224809" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive keratitis-ichthyosis-deafness syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_332193" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive limb-girdle muscular dystrophy type 2K</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1386785" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive limb-girdle muscular dystrophy type 2P</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1385598" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive limb-girdle muscular dystrophy type R18</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82696" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive multiple pterygium syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1861039" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive nonsyndromic hearing loss 124</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355302" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive nonsyndromic hearing loss 46</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_342420" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive osteopetrosis 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370883" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive proximal renal tubular acidosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1770070" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive Robinow syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462348" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive spinocerebellar ataxia 10</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482082" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive spinocerebellar ataxia 12</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766730" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive spinocerebellar ataxia 13</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816656" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive spinocerebellar ataxia 15</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863738" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive spinocerebellar ataxia 17</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863942" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive spinocerebellar ataxia 18</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_349134" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive spinocerebellar ataxia 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684324" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive spinocerebellar ataxia 20</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_349489" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Axenfeld-Rieger anomaly with partially absent eye muscles, distinctive face, hydrocephaly, and skeletal abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_371416" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ayme-Gripp syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340586" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bailey-Bloch congenital myopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120532" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Baller-Gerold syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340943" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Baraitser-Winter syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482865" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Baraitser-winter syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_230818" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Barber-Say syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_422452" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_393032" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 13</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_393033" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 14</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_855172" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 16</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_811538" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 17</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_812504" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 18</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_855173" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 19</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_422453" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794146" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 22</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347179" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_423627" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347610" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347180" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347181" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347182" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bardet-Biedl syndrome 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355727" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bartter disease type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_343428" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bartter disease type 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355430" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bartter disease type 4A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934772" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bartter disease type 4B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684820" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Basilicata-Akhtar syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1785671" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">BDV syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1711894" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Beck-Fahrner syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_888408" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Beta-D-mannosidosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_331805" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bethlem myopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347159" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Biemond syndrome type 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376107" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bilateral frontoparietal polymicrogyria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347890" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bird headed-dwarfism, Montreal type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_90978" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bird-headed dwarfism with progressive ataxia, insulin-resistant diabetes, goiter, and primary gonadal insufficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_393583" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Birk-Barel syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163226" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Blepharonasofacial malformation syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_785805" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Blepharophimosis - intellectual disability syndrome, MKB type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162905" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Blepharophimosis - intellectual disability syndrome, Ohdo type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347661" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Blepharophimosis - intellectual disability syndrome, Verloes type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1779966" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Blepharophimosis-impaired intellectual development syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1638030" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">BODY MASS INDEX QUANTITATIVE TRAIT LOCUS 19</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648380" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bone marrow failure syndrome 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816693" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bosch-Boonstra-Schaaf optic atrophy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_350589" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Brachydactyly-nystagmus-cerebellar ataxia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338605" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Brachyolmia type 1, Hobaek type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_96583" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Brachyrachia (short spine dysplasia)</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1678789" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Brain abnormalities, neurodegeneration, and dysosteosclerosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1392440" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Brain malformations with or without urinary tract defects</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1647320" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Brain small vessel disease 1 with or without ocular anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766992" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Branched-chain keto acid dehydrogenase kinase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208683" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Brunner syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167089" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bullous dystrophy, macular type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355844" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Camptodactyly-tall stature-scoliosis-hearing loss syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_318752" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cardiac malformation, cleft lip/palate, microcephaly, and digital anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648330" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cardiac, facial, and digital anomalies with developmental delay</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648333" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cardiac-urogenital syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_266149" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cardio-facio-cutaneous syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815336" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cardiofaciocutaneous syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1804638" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Carey-Fineman-Ziter syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_501203" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Carnosinemia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_351162" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cataract 11 multiple types</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_375579" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cataract, ataxia, short stature, and intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167117" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cataract-hypertrichosis-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167082" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cataract-nephropathy-encephalopathy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684686" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Catifa syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1710973" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">CEBALID syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_395225" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cephalin lipidosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794215" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar ataxia, brain abnormalities, and cardiac conduction defects</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1639436" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar ataxia, intellectual disability, and dysequilibrium syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815307" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar ataxia, intellectual disability, and dysequilibrium syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_905041" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar atrophy, visual impairment, and psychomotor retardation;</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766575" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar dysfunction with variable cognitive and behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1808634" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar dysfunction, impaired intellectual development, and hypogonadotropic hypogonadism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863932" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar-facial-dental syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_331813" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebelloparenchymal Disorder VI</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_442763" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebral folate transport deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_442880" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebral palsy, spastic quadriplegic, 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120537" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebro-costo-mandibular syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340138" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebrooculonasal syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_344563" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Channelopathy-associated congenital insensitivity to pain, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1800447" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Charcot-Marie-Tooth disease axonal type 2X</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_811329" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Charcot-Marie-Tooth disease type 4B3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_336803" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Charcot-Marie-Tooth disease X-linked recessive 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162891" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Charcot-Marie-Tooth disease X-linked recessive 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824000" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Charcot-Marie-Tooth disease, axonal, IIa 2II</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1811493" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Charcot-Marie-Tooth disease, demyelinating, IIA 1I</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_348419" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Charcot-Marie-Tooth disease-hearing loss-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75567" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">CHARGE syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338620" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Charlevoix-Saguenay spastic ataxia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1803276" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chilton-Okur-Chung neurodevelopmental syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341214" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">CHIME syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_116041" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cholestanol storage disease</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934754" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chorea, childhood-onset, with psychomotor retardation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_763933" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Choroideremia-deafness-obesity syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_935014" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 11p13 deletion syndrome, distal</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462652" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 13q14 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_467404" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 15q11.2 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_390804" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 15q26-qter deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766321" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 16p11.2 duplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462208" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 16p12.2-p11.2 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462419" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 17p13.1 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1726802" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 17q11.2 deletion syndrome, 1.4Mb</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482768" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 17q12 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482767" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 17q12 duplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_935015" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 19q13.11 deletion syndrome, distal</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_935013" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 19q13.11 deletion syndrome, proximal</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1632676" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 1p35 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_334629" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 1p36 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_393913" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 1q21.1 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_382704" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 1q41-q42 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_382926" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">CHROMOSOME 1qter DELETION SYNDROME</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436417" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 22q11.2 microduplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_390902" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 2p16.1-p15 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436765" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 2q32-q33 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419169" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 2q37 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_393265" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 3q29 microdeletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_440897" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 3q29 microduplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462207" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 4Q32.1-q32.2 triplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_416385" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 5p13 duplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816612" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 5q12 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_393396" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 6pter-p24 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481861" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 8q21.11 deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167073" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome 9p deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208679" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome Xp11.22 duplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_440690" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome Xp11.23-p11.22 duplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1809227" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chromosome Xq13 duplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208651" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chylomicron retention disease</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_3347" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Chédiak-Higashi syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648491" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Citrullinemia type I</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_463131" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">CK syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_443983" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Clark-Baraitser syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_199606" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Classic homocystinuria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1752166" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">COACH syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341256" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cobalamin C disease</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767571" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cobblestone lissencephaly without muscular or ocular involvement</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_155488" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cockayne syndrome type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_155487" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cockayne syndrome type 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_333031" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">CODAS syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_764868" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Coenzyme Q10 deficiency, primary, 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75556" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Coffin-Lowry syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482831" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Coffin-Siris syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1683634" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Coffin-Siris syndrome 10</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1717402" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Coffin-Siris syndrome 11</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1782096" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Coffin-Siris syndrome 12</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934755" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Coffin-Siris syndrome 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1615540" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Coffin-Siris syndrome 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648281" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Coffin-Siris syndrome 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1679527" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Coffin-Siris syndrome 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462226" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">COG5-congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766144" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">COG6-congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_409971" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">COG8-congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_894554" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cognitive impairment - coarse facies - heart defects - obesity - pulmonary involvement - short stature - skeletal dysplasia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482045" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cognitive impairment with or without cerebellar ataxia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78539" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cohen syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1386939" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cohen-Gibson syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338577" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cold-induced sweating syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82779" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Combined deficiency of sialidase AND beta galactosidase</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1639653" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Combined oxidative phosphorylation deficiency 35</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1644927" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Combined oxidative phosphorylation deficiency 36</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1812715" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Combined oxidative phosphorylation deficiency 54</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1806598" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Combined oxidative phosphorylation deficiency 55</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841277" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Combined oxidative phosphorylation deficiency 58</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_814727" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Complex cortical dysplasia with other brain malformations 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_765150" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Complex cortical dysplasia with other brain malformations 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347429" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Conductive deafness-malformed external ear syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_371596" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cone-rod dystrophy 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_346973" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital cataracts-facial dysmorphism-neuropathy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1695950" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital cerebellar hypoplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_83348" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital defect of folate absorption</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_989503" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital disorder of deglycosylation 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1809253" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital disorder of deglycosylation 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1647704" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital disorder of glycosylation with defective fucosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794181" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital disorder of glycosylation, type 2v</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684742" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital disorder of glycosylation, type ICC</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1846347" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital disorder of glycosylation, type IIbb</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794278" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital disorder of glycosylation, type Iw, autosomal dominant</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_318592" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital generalized lipodystrophy type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167108" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital heart defect-round face-developmental delay syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1385307" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital heart defects, dysmorphic facial features, and intellectual developmental disorder</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_907954" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital hyperammonemia, type I</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1674629" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital hypotonia, epilepsy, developmental delay, and digital anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_894363" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital insensitivity to pain-hypohidrosis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_96004" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital laryngeal abductor palsy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_413044" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital muscular dystrophy due to integrin alpha-7 deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1382291" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital muscular dystrophy with cataracts and intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_315658" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital muscular hypertrophy-cerebral syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934661" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital myasthenic syndrome 20</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_762102" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital myopathy 10b, mild variant</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841060" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital myopathy 21 with early respiratory failure</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1642424" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital myopathy with internal nuclei and atypical cores</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340355" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital pulmonary lymphangiectasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_387859" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Convulsive disorder, familial, with prenatal or early onset</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347912" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cooper-Jabs syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341379" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Corneal-cerebellar syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1645760" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cornelia de Lange syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_339902" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cornelia de Lange syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_763817" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cornelia de Lange syndrome 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1848930" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cornelia de Lange syndrome 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335185" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Corpus callosum agenesis-intellectual disability-coloboma-micrognathia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_104498" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Corpus callosum, agenesis of</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_413258" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cortical dysplasia-focal epilepsy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_108454" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Costello syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767432" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cowden syndrome 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767433" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cowden syndrome 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_96586" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cranioectodermal dysplasia 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462224" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cranioectodermal dysplasia 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1808104" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Craniofacial dysmorphism, skeletal anomalies, and impaired intellectual development 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370148" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Craniofacial dysplasia - osteopenia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347473" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Craniofacial dyssynostosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_501171" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Craniofacial microsomia 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_65095" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Craniofrontonasal syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419753" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Craniometaphyseal dysplasia, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_346753" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Craniosynostosis 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_387829" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Craniosynostosis-intellectual disability-clefting syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337451" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Creatine transporter deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335673" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cree intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_423639" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cross syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1162" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Crouzon syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82795" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cutis laxa with osteodystrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_387821" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cutis verticis gyrata and intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_57509" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cyclical vomiting syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_346587" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cysteine Peptiduria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_463405" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">D-2-hydroxyglutaric aciduria 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_452447" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">D-Glyceric aciduria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_209235" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Danon disease</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75550" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">DE SANCTIS-CACCHIONE SYNDROME</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_387799" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deafness, congenital, with total albinism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335096" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deafness, X-linked 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_375620" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deafness-intellectual disability, Martin-Probst type syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_280689" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deficiency of acetyl-CoA acetyltransferase</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_7467" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deficiency of alpha-mannosidase</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_226944" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deficiency of beta-ureidopropionase</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75661" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deficiency of cytochrome-b5 reductase</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_154356" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deficiency of guanidinoacetate methyltransferase</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_91001" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deficiency of malonyl-CoA decarboxylase</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_452940" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deficiency of phosphoserine phosphatase</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82777" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deficiency of UDPglucose-hexose-1-phosphate uridylyltransferase</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794177" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">DEGCAGS syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_96605" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deletion of long arm of chromosome 18</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_96604" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deletion of short arm of chromosome 18</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_155630" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dentatorubral-pallidoluysian atrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_387794" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dermatoleukodystrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_860583" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Desbuquois dysplasia 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862731" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Desbuquois dysplasia 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1809351" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 100</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1812769" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 102</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1809962" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 103</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823956" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 104</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823985" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 106</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824026" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 108</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1845523" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 112</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1860189" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 114</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1858870" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 115</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1626137" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 91</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1638319" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 92</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1642888" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 93</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815608" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 94</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794209" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 97</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794228" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy 99</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_483052" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482821" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 13</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816730" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 19</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862968" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 24</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863753" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 27</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_894942" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 31A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_909501" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 32</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_899149" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 34</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934683" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 42</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934679" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 43</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1392637" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 54</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1621755" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 56</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1633749" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 59</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1646846" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 63</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1633501" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 64</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648486" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 66</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648285" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 67</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462336" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648407" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 70</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1673011" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 76</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1719688" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 87</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338393" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1641343" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay and seizures with or without movement abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816083" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay with autism spectrum disorder and gait instability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1785587" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay with dysmorphic facies and dental anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1679263" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay with or without dysmorphic facies and autism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1848555" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay with or without epilepsy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794214" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay with or without intellectual impairment or behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934768" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay with short stature, dysmorphic facial features, and sparse hair</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824015" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay with variable intellectual disability and dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823997" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay, behavioral abnormalities, and neuropsychiatric disorders</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823975" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay, hypotonia, and impaired language</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794222" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay, hypotonia, musculoskeletal defects, and behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1765507" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay, impaired growth, dysmorphic facies, and axonal neuropathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794167" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental delay, impaired speech, and behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_289643" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Diabetes insipidus, nephrogenic, autosomal</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_288785" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Diabetes insipidus, nephrogenic, X-linked</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_390966" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Diamond-Blackfan anemia 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934800" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dias-Logan syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_113103" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Diastrophic dysplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_387782" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dicarboxylic aminoaciduria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1714920" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Diets-Jongmans syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_4297" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">DiGeorge syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75682" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dihydropteridine reductase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_83353" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dihydropyrimidinase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_409522" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dihydropyrimidine dehydrogenase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162901" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dilated cardiomyopathy-hypergonadotropic hypogonadism syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436306" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Distal 10q deletion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208648" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">DOORS syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120642" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dopa-responsive dystonia due to sepiapterin reductase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_4385" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Down syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419694" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">DPAGT1-congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_59797" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dubowitz syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_387764" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dwarfism, low-birth-weight type, with unresponsiveness to growth hormone</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120527" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dyggve-Melchior-Clausen syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347385" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dysautonomia-like disorder</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341705" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dyskeratosis congenita, autosomal recessive 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462791" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dyskeratosis congenita, autosomal recessive 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_216941" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dyskeratosis congenita, X-linked</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98150" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dysosteosclerosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794264" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dystonia 33</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1801185" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dystonia 35, childhood-onset</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841228" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dystonia 37, early-onset, with striatal lesions</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1798877" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Early-onset progressive diffuse brain atrophy-microcephaly-muscle weakness-optic atrophy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815995" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Early-onset progressive neurodegeneration-blindness-ataxia-spasticity syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_411243" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">EAST syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_870434" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ectodermal dysplasia 4, hair/nail type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767025" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ectodermal dysplasia 6, hair/nail type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684719" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ectodermal dysplasia with facial dysmorphism and acral, ocular, and brain anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340297" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ectodermal dysplasia-blindness syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_343663" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ectrodactyly, ectodermal dysplasia, and cleft lip-palate syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347666" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ectrodactyly, ectodermal dysplasia, and cleft lip-palate syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167084" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Edinburgh malformation syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_356497" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ehlers-Danlos syndrome, musculocontractural type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816175" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ehlers-Danlos syndrome, musculocontractural type 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98047" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Eichsfeld type congenital muscular dystrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_325097" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Eiken syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1863287" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">El Hayek-Chahrour neurodevelopmental disorder</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_8584" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ellis-van Creveld syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_923028" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Elsahy-Waters syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_323030" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Emanuel syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341670" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Encephalomalacia, multilocular</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208661" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Encephalopathy due to beta-mercaptolactate-cysteine disulfiduria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1645412" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Encephalopathy due to GLUT1 deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934634" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Encephalopathy, progressive, with amyotrophy and optic atrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98284" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy with myoclonic atonic seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1847911" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy, early-onset, 3, with or without developmental delay</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934599" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy, early-onset, vitamin B6-dependent</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_371424" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy, familial adult myoclonic, 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_375031" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy, familial adult myoclonic, 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767474" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy, familial adult myoclonic, 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1641798" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy, familial focal, with variable foci 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766773" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy, idiopathic generalized, susceptibility to, 12</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_413424" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy, idiopathic generalized, susceptibility to, 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347333" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy, photogenic, with spastic diplegia and intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823952" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy, X-linked 2, with or without impaired intellectual development and dysmorphic features</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_330468" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy-microcephaly-skeletal dysplasia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_384017" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epilepsy-telangiectasia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_763789" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Epsilon-trimethyllysine hydroxylase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355966" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ethylmalonic encephalopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1679105" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Facial dysmorphism, hypertrichosis, epilepsy, intellectual/developmental delay, and gingival overgrowth syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436265" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Faciocardiomelic syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1727901" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Facioscapulohumeral muscular dystrophy 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_322025" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fallot complex-intellectual disability-growth delay syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_373154" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Familial hyperthyroidism due to mutations in TSH receptor</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419177" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Familial hypertryptophanemia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1672478" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Familial infantile bilateral striatal necrosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_181488" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Familial infantile myoclonic epilepsy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78693" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Familial methionine malabsorption</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355365" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Familial scaphocephaly syndrome, McGillivray type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482360" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Familial temporal lobe epilepsy 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_483333" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fanconi anemia complementation group A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_336901" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fanconi anemia complementation group B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_483324" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fanconi anemia complementation group C</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_463627" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fanconi anemia complementation group D2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_463628" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fanconi anemia complementation group E</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_924579" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fanconi anemia complementation group R</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1632414" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fanconi anemia, complementation group S</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78654" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Farber lipogranulomatosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1637716" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Feingold syndrome type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482119" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Feingold syndrome type 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120523" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Femoral hypoplasia - unusual facies syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_83336" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fetal iodine deficiency disorder</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1768809" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">FG syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_375687" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">FG syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_336965" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">FG syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1647111" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fibromatosis, gingival, 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_412956" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fibrosis of extraocular muscles, congenital, 3c</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163197" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Filippi syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163198" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fine-Lubinsky syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1845438" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fliedner-Zweier syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_152667" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Floating-Harbor syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_42055" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Focal dermal hypoplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208650" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fountain syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1639061" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fraser syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_155512" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">FRAXE</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_923943" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Frontometaphyseal dysplasia 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462056" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Frontonasal dysplasia - severe microphthalmia - severe facial clefting syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462053" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Frontonasal dysplasia with alopecia and genital anomaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1803615" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Frontorhiny</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_65088" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fryns syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_5288" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fucosidosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1375401" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Gabriele de Vries syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1634188" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Galloway-Mowat syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1625619" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Galloway-Mowat syndrome 2, X-linked</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1627611" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Galloway-Mowat syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1613511" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Galloway-Mowat syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1617227" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Galloway-Mowat syndrome 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1674560" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Galloway-Mowat syndrome 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1679283" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Galloway-Mowat syndrome 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82813" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">gamma-Glutamyltransferase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98034" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">GAPO syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1811526" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Gastrointestinal defects and immunodeficiency syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1393733" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Gaze palsy, familial horizontal, with progressive scoliosis, 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1676426" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Generalized epilepsy with febrile seizures plus, type 10</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98149" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Geroderma osteodysplastica</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376775" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Giant axonal neuropathy 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_96563" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Gillespie syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1675328" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Global developmental delay with or without impaired intellectual development</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1787991" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Global developmental delay with speech and behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934611" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Global developmental delay, absent or hypoplastic corpus callosum, and dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82889" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Glucocorticoid deficiency with achalasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82823" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Glutamate formiminotransferase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_906606" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Glutamate pyruvate transaminase 2 deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_97988" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Glutathione synthetase deficiency with 5-oxoprolinuria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_343541" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Glutathione synthetase deficiency without 5-oxoprolinuria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_410166" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Glycogen storage disease due to phosphoglycerate kinase 1 deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1615160" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Glycosylphosphatidylinositol biosynthesis defect 15</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1628197" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Glycosylphosphatidylinositol biosynthesis defect 16</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1800300" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Gnb5-related intellectual disability-cardiac arrhythmia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340743" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">GNPTG-mucolipidosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_332131" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Goldberg-Shprintzen syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_2554" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Gorlin syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355427" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Grange syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75557" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Grebe syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347092" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Griscelli syndrome type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338622" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Growth delay due to insulin-like growth factor I resistance</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_373337" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Growth delay due to insulin-like growth factor type 1 deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934687" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Growth retardation, intellectual developmental disorder, hypotonia, and hepatopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_383868" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hair defect with photosensitivity and intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_182961" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hajdu-Cheney syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341089" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hall-Riggs syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_5414" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hallermann-Streiff syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1853151" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hao-Fountain syndrome due to USP7 mutation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934644" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Harel-Yoon syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794233" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hearing loss, autosomal recessive 119</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1861332" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hearing loss, autosomal recessive 123</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1647369" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Heimler syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462080" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hemolytic anemia due to glucophosphate isomerase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_860487" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hennekam lymphangiectasia-lymphedema syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462843" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hennekam-Beemer syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75700" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hepatic methionine adenosyltransferase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_332390" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary cryohydrocytosis with reduced stomatin</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_42105" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary fructosuria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_6915" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary insensitivity to pain with anhidrosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_388073" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 11</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341387" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 15</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_375796" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 16</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_442343" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 18</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_374177" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_501249" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 35</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_401097" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_854816" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 45</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_473687" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 46</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462251" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 48</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_762260" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 49</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_761341" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 54</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_761342" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 55</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_761343" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 56</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816624" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 61</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816625" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 63</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816619" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hereditary spastic paraplegia 64</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1785187" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hiatt-Neu-Cooper neurodevelopmental syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82825" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Histidine transport defect</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_113135" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Histidinemia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82895" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">HNSHA due to aldolase A deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1830493" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hogue-Janssens syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78617" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Holoprosencephaly 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1714826" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Holoprosencephaly 13, X-linked</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_322517" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Holoprosencephaly 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_327125" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Holoprosencephaly 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355304" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Holoprosencephaly 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75703" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Homocarnosinosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75686" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hooft disease</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_899880" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Houge-Janssens syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1846017" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hoxha-Aliu syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_781653" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">HSD10 mitochondrial disease</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_321949" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hunter-McAlpine craniosynostosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_39698" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hurler syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1805033" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyaline fibromatosis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_854455" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hydrocephalus, nonsyndromic, autosomal recessive 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767605" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hydrocephalus, nonsyndromic, autosomal recessive 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_435997" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperdibasic aminoaciduria type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766205" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperekplexia 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82818" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperglycinemia, transient neonatal</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75691" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperhydroxyprolinemia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419505" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperinsulinemic hypoglycemia, familial, 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_400646" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperinsulinemic hypoglycemia, familial, 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355435" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperinsulinism due to glucokinase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376153" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperinsulinism-hyperammonemia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82821" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperleucine-isoleucinemia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341010" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperlysinemia due to defect in lysine transport into mitochondria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120650" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperlysinuria with hyperammonemia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934732" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypermanganesemia with dystonia 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462408" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypermethioninemia with deficiency of S-adenosylhomocysteine hydrolase</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82815" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperornithinemia-hyperammonemia-homocitrullinuria syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1647044" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperphosphatasia with intellectual disability syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766551" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperphosphatasia with intellectual disability syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816684" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperphosphatasia with intellectual disability syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863395" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperphosphatasia with intellectual disability syndrome 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419175" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperprolinemia type 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_383794" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperuricemia, infantile, with abnormal behavior and normal hypoxanthine guanine phosphoribosyltransferase</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98376" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypochondroplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_383787" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypogonadism with low-grade mental deficiency and microcephaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_289648" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypogonadotropic hypogonadism 2 with or without anosmia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1811919" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypogonadotropic hypogonadism 26 with or without anosmia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815490" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypohidrosis-enamel hypoplasia-palmoplantar keratoderma-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_906582" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypomagnesemia, seizures, and intellectual disability 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_897960" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypomyelinating leukodystrophy 11</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_905068" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypomyelinating leukodystrophy 12</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436642" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypomyelinating leukodystrophy 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482274" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypomyelinating leukodystrophy 8 with or without oligodontia and-or hypogonadotropic hypogonadism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_501134" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypomyelination and Congenital Cataract</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340984" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypoparathyroidism-retardation-dysmorphism syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_113137" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypothalamic hypothyroidism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934585" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypotonia, ataxia, and delayed development syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1647427" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypotonia, ataxia, developmental delay, and tooth enamel defect syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_344576" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ichthyosis, split hairs, and amino aciduria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_344577" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ichthyosis-alopecia-eclabion-ectropion-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_318724" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ichthyosis-intellectual disability syndrome with large keratohyalin granules in the skin</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340966" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ichthyosis-intellectual disability-dwarfism-renal impairment syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1682428" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ichthyotic keratoderma, spasticity, hypomyelination, and dysmorphic facial features</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1746744" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">IFAP syndrome 1, with or without BRESHECK syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1711007" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Imagawa-Matsumoto syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_124342" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Iminoglycinuria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862808" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Immunodeficiency 23</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934623" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Immunodeficiency 49</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_416638" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Immunodeficiency 83, susceptibility to viral infections</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1810465" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Immunodeficiency 96</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1636193" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Immunodeficiency-centromeric instability-facial anomalies syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481378" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Immunodeficiency-centromeric instability-facial anomalies syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934766" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Immunodeficiency-centromeric instability-facial anomalies syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934765" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Immunodeficiency-centromeric instability-facial anomalies syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1381460" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Immunoskeletal dysplasia with neurodevelopmental abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82803" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Inborn glycerol kinase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_7049" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Incontinentia pigmenti syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340949" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Indolylacroyl glycinuria with intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75665" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Infantile GM1 gangliosidosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82852" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Infantile neuroaxonal dystrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338613" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Infantile onset spinocerebellar ataxia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684702" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder 60 with seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1712636" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder 62</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648358" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder and retinitis pigmentosa; IDDRP</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1675423" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with abnormal behavior, microcephaly, and short stature</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823979" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with autism and dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767287" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with autism and macrocephaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1715081" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with autistic features and language delay, with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684850" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with behavioral abnormalities and craniofacial dysmorphism with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648498" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with dysmorphic facies and behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934584" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with dysmorphic facies and ptosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1385744" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with gastrointestinal difficulties and high pain threshold</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684709" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with hypotonia and behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794207" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with hypotonia, impaired speech, and dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684804" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with impaired language and dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823972" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with muscle tone abnormalities and distal skeletal defects</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648354" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with or without epilepsy or cerebellar ataxia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1711370" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with poor growth and with or without seizures or ataxia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1754849" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with speech delay and axonal peripheral neuropathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684848" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with speech delay, autism, and dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648327" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with speech delay, dysmorphic facies, and t-cell abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1716581" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal dominant 63, with macrocephaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1784554" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal dominant 64</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1787923" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal dominant 65</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1812470" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal dominant 66</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1805690" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal dominant 67</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1802176" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal dominant 68</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1808299" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal dominant 69</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824044" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal dominant 70</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841073" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal dominant 71, with behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841272" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal dominant 73</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1679317" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal recessive 70</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1673448" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal recessive 71</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1802013" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal recessive 73</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934651" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal recessive 74</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1808159" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal recessive 75, with neuropsychiatric features and variant lissencephaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823966" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal recessive 77</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1850178" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal recessive 80, with variant lissencephaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1858975" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, autosomal recessive 82</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1840204" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, X-linked 111</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1840225" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, X-linked 112</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1854940" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, x-linked, syndromic 37</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794140" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder, X-linked, syndromic, with pigmentary mosaicism and coarse facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_409857" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482832" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 13</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766161" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 14</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766162" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 15</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766163" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 16</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481472" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862851" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 24</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863578" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 29</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436447" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_899389" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 33</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_907277" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 34</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_909304" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 39</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_393397" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1810363" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 40</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934751" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 41</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934741" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 42</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934738" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 43</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1616472" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 45</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1618560" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 46</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1622196" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 47</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1619532" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 48</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_382611" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1616989" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 50</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1625009" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 51</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1615839" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 52</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1623344" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 53</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1614787" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 54</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1635938" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 55, with seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1638835" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 56</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648280" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 57</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648488" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 58</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462761" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481912" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1714250" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370850" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 12</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_442564" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 13</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462812" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 14</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481784" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 16</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481895" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 18</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482168" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 27</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482153" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 31</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482674" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 34</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370844" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862780" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 42</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862823" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 43</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863182" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 44</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863301" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 45</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863720" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 46</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863881" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 47</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370849" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_903243" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 51</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934722" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 54</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934670" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 56</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934640" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 57</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934608" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 58</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934586" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 59</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370848" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1622296" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 61</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648460" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 66</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370847" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_369678" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal recessive 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_369613" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, FRA12A type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_342889" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, microcephaly, growth retardation, joint contractures, and facial dysmorphism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_342897" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, short stature, facial anomalies, and joint dislocations</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_336345" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, Wolff type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_444070" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_855516" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 100</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_855517" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 101</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1715418" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 102</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934785" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 103</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934784" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 104</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934783" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 105</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1389156" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 106</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1639885" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 107</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208676" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 19</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162922" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208677" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 20</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163234" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 23</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163235" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 30</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_854647" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 41</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_375633" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 45</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337255" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 46</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335296" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 53</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337526" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 58</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_924419" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 61</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337002" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 63</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_375793" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 72</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335199" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 77</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335203" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 81</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337201" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 82</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337203" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 84</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_477075" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 88</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_333247" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 89</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167112" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_477074" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 90</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335109" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 92</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_410164" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 93</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_394715" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 95</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_477039" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 96</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_440689" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 97</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_813076" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 99</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_899839" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked 99, syndromic, female-restricted</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_394425" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked syndromic, Turner type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_895979" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked, syndromic 33</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1392054" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked, syndromic, 35</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934781" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked, syndromic, Bain type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208681" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, X-linked, with or without seizures, arx-related</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_325196" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability-brachydactyly-Pierre Robin syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934650" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability-epilepsy-extrapyramidal syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816736" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability-facial dysmorphism syndrome due to SETD5 haploinsufficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816016" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability-feeding difficulties-developmental delay-microcephaly syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816002" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability-hypotonia-spasticity-sleep disorder syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_897984" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability-microcephaly-strabismus-behavioral abnormalities syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376145" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability-obesity-prognathism-eye and skin anomalies syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862201" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability-severe speech delay-mild dysmorphism syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340888" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability-spasticity-ectrodactyly syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1665943" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability-strabismus syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_87429" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Iodotyrosine deiodination defect</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_90976" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Iodotyrosyl coupling defect</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_339510" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Isolated focal cortical dysplasia type II</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_351204" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Isolated microphthalmia 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_5920" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ito hypomelanosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1647359" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Jaberi-Elahi syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_810673" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Jawad syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_59798" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Johanson-Blizzard syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1621331" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joint laxity, short stature, and myopia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1644883" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482527" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 15</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766672" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 18</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_334114" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816542" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 21</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934673" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 27</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934672" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 28</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_332931" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1613861" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 30</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684786" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 36</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794217" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 40</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347545" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_342805" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_369401" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436772" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_382940" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Joubert syndrome 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162906" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Juberg-Hayward syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816141" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Juvenile onset Parkinson disease 19A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162897" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Kabuki syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_477126" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Kabuki syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_66317" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">KBG syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338088" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Keipert syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75520" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Keratosis pilaris atrophicans</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863623" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ketoacidosis due to monocarboxylate transporter-1 deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208655" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Kifafa seizure disorder</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1779339" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">KINSSHIP syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208639" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Kleefstra syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1623903" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Kleefstra syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1642123" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Knobloch syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1812153" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Knobloch syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1781649" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Kohlschutter-Tonz syndrome-like</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355853" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Koolen-de Vries syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1713491" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Kostmann syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1807460" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Kury-Isidor syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341029" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">L-2-hydroxyglutaric aciduria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1679270" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lactic aciduria due to D-lactic acid</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_903542" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lamb-Shaffer syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_343381" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lambert syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_79465" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Landau-Kleffner syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_96585" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Langer mesomelic dysplasia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_6009" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Langer-Giedion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934645" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Language delay and attention deficit-hyperactivity disorder/cognitive impairment with or without cardiac arrhythmia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_104500" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Larsen syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_342070" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lateral meningocele syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_44078" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Laurence-Moon syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419026" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leber congenital amaurosis 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_348473" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leber congenital amaurosis 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_344245" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leber congenital amaurosis 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_333240" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leber optic atrophy and dystonia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419518" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leigh syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_372055" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lentiginosis, centrofacial neurodysraphic</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98483" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lenz-Majewski hyperostosis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462321" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">LEOPARD syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_374332" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lesch-Nyhan phenotype with normal HGPRT</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_9721" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lesch-Nyhan syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1762595" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lessel-Kreienkamp syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82888" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leucine-induced hypoglycemia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1635255" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leukodystrophy, hypomyelinating, 14</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1631337" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leukodystrophy, hypomyelinating, 16</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794284" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leukodystrophy, hypomyelinating, 23, with ataxia, deafness, liver dysfunction, and dilated cardiomyopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1844996" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leukodystrophy, hypomyelinating, 27</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_383698" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leukomelanoderma-infantilism-intellectual disability-hypodontia-hypotrichosis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1788485" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Li-Campeau syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1709796" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Liberfarb syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1646345" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Linear nevus sebaceous syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163210" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Linear skin defects with multiple congenital anomalies 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_763835" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Linear skin defects with multiple congenital anomalies 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1845936" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lipodystrophy, familial partial, type 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_334166" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lipodystrophy-intellectual disability-deafness syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1719546" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lissencephaly 10</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934613" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lissencephaly 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1657090" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lissencephaly due to LIS1 mutation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1644310" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lissencephaly type 1 due to doublecortin gene mutation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1646567" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Loeys-Dietz syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_382398" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Loeys-Dietz syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_18145" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lowe syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167095" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lowry-MacLean syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1849943" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lui-Jee-Baron syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_898669" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Luscan-Lumish syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167097" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lysine malabsorption syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75704" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lysinuric protein intolerance</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648471" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Macrocephaly, acquired, with impaired intellectual development</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934733" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Macrocephaly, dysmorphic facies, and psychomotor retardation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1802903" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Macrocephaly, neurodevelopmental delay, lymphoid hyperplasia, and persistent fetal hemoglobin</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_381416" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Macrocephaly-autism syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816555" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Macrocephaly-developmental delay syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_899689" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Macrocephaly-intellectual disability-neurodevelopmental disorder-small thorax syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_812742" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Macrocephaly/megalencephaly syndrome, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_906646" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Macrothrombocytopenia-lymphedema-developmental delay-facial dysmorphism-camptodactyly syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766574" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Malan overgrowth syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_334557" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Male hypergonadotropic hypogonadism-intellectual disability-skeletal anomalies syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_383668" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Maple syrup urine disease type 1A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163206" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Marden-Walker syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_6222" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Marinesco-Sjögren syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75551" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Marshall-Smith syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162894" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">MASA syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1627793" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Meckel syndrome 13</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_322893" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">MEDNIK syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648439" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mega-corpus-callosum syndrome with cerebellar hypoplasia and cortical malformations</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355943" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Megaconial type congenital muscular dystrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462705" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Megalencephalic leukoencephalopathy with subcortical cysts 2A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462706" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Megalencephalic leukoencephalopathy with subcortical cysts 2B, remitting, with or without intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841264" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Megalencephalic leukoencephalopathy with subcortical cysts 4, remitting</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_812057" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Megalencephaly, autosomal dominant</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355421" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Megalencephaly-capillary malformation-polymicrogyria syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1855924" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Megalencephaly-polydactyly syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863175" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162904" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Megalocornea-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_375855" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">MEHMO syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462470" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Meier-Gorlin syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_905079" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Meier-Gorlin syndrome 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_905986" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">MEND syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1675629" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Menke-Hennekam syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1676668" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Menke-Hennekam syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_44030" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Menkes kinky-hair syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_331885" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mental and growth retardation with amblyopia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_224728" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Merosin deficient congenital muscular dystrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98478" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mesomelic dwarfism, Nievergelt type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98377" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Metachondromatosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_6071" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Metachromatic leukodystrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_381579" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Metaphyseal chondrodysplasia-retinitis pigmentosa syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_344426" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Methylcobalamin deficiency type cblG</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167111" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Methylmalonic acidemia with homocystinuria, type cblX</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341253" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Methylmalonic aciduria and homocystinuria type cblD</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162914" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microbrachycephaly-ptosis-cleft lip syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_96587" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephalic osteodysplastic primordial dwarfism type II</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_381554" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephalus cardiomyopathy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_344415" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 1, primary, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934690" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 17, primary, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1391110" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 18, primary, autosomal dominant</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_346929" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 2, primary, autosomal recessive, with or without cortical malformations</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1641618" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 20, primary, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648413" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 24, primary, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1674123" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 25, primary, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794279" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 28, primary, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823993" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 29, primary, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824053" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 30, primary, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347655" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 4, primary, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_373344" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 5, primary, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436370" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly 7, primary, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_480111" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly and chorioretinopathy 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863825" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly and chorioretinopathy 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648355" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly, cataracts, impaired intellectual development, and dystonia with abnormal striatum</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_140771" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly, normal intelligence and immunodeficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863434" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly, short stature, and impaired glucose metabolism 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_906140" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly, short stature, and impaired glucose metabolism 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208663" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly-cervical spine fusion anomalies syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_414129" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly-facio-cardio-skeletal syndrome, Hadziselimovic type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_490089" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly-intellectual disability-phalangeal and neurological anomalies syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816410" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly-thin corpus callosum-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934707" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Micrognathia-recurrent infections-behavioral abnormalities-mild intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_154638" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microphthalmia with limb anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767506" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microphthalmia, isolated, with coloboma 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162898" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microphthalmia, syndromic 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816133" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microphthalmia, syndromic 12</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934777" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Midface hypoplasia, hearing impairment, elliptocytosis, and nephrocalcinosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82695" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mietens syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355962" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Migraine, familial hemiplegic, 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78538" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Miller Dieker syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648278" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex 1 deficiency, nuclear type 12</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648370" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex 1 deficiency, nuclear type 13</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648481" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex 1 deficiency, nuclear type 27</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1730423" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex 4 deficiency, nuclear type 17</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1765544" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex 4 deficiency, nuclear type 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_762097" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex III deficiency nuclear type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862877" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex III deficiency nuclear type 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1750917" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex IV deficiency, nuclear type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481338" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex V (ATP synthase) deficiency nuclear type 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841116" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex V (ATP synthase) deficiency, nuclear type 4A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1631838" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial DNA depletion syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767376" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial DNA depletion syndrome 11</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338045" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial DNA depletion syndrome 6 (hepatocerebral type)</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_412815" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial DNA depletion syndrome 8a</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_330469" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">MMEP syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_371897" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">MOMO syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_443986" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Morquio syndrome C</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481473" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mosaic variegated aneuploidy syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863995" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Motor developmental delay due to 14q32.2 paternally expressed gene defect</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_68663" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mucolipidosis type IV</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_44514" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mucopolysaccharidosis type 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_43108" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mucopolysaccharidosis type 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_6453" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mucopolysaccharidosis, MPS-I-S</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_39264" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mucopolysaccharidosis, MPS-III-A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_88601" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mucopolysaccharidosis, MPS-III-B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_39477" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mucopolysaccharidosis, MPS-III-C</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_88602" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mucopolysaccharidosis, MPS-III-D</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_43375" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mucopolysaccharidosis, MPS-IV-A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_43376" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mucopolysaccharidosis, MPS-IV-B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355217" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muenke syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1631916" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Multiple benign circumferential skin creases on limbs 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481405" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Multiple congenital anomalies-hypotonia-seizures syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815686" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Multiple congenital anomalies-hypotonia-seizures syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1788942" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Multiple congenital anomalies-neurodevelopmental syndrome, X-linked</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1643082" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Multiple mitochondrial dysfunctions syndrome 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75664" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Multiple sulfatase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767552" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type a, 11</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_140820" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A, 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815546" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A14</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_461764" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815551" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B14</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_461762" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648468" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy-dystroglycanopathy (limb-girdle), type C, 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335764" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy-dystroglycanopathy type B5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167103" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myhre syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_342587" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myoclonic epilepsy, juvenile, susceptibility to, 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1683864" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myoclonus, familial, 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1634824" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myopathy, lactic acidosis, and sideroblastic anemia 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_324696" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myopia 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419137" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myotonic dystrophy type 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_424834" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">N syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120519" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nager syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_344273" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nemaline myopathy 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_334382" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neonatal ichthyosis-sclerosing cholangitis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_140806" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neonatal pseudo-hydrocephalic progeroid syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_855697" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nephronophthisis 18</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_461769" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nephronophthisis-like nephropathy 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419735" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nephropathic cystinosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815283" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nephrotic syndrome, type 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_763887" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodegeneration with brain iron accumulation 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1387791" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodegeneration with brain iron accumulation 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824013" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodegeneration, childhood-onset, with multisystem involvement due to mitochondrial dysfunction</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1801540" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodegeneration, childhood-onset, with progressive microcephaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1859522" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder plus optic atrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684871" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with ataxia, hypotonia, and microcephaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1621102" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with ataxic gait, absent speech, and decreased cortical white matter</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684663" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with behavioral abnormalities, absent speech, and hypotonia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648373" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with cerebellar atrophy and with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1786662" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with cerebral atrophy and variable facial dysmorphism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824008" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with craniofacial dysmorphism and skeletal defects</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1627464" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with dysmorphic facies and distal limb anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684792" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with dysmorphic facies and distal skeletal anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1790413" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with dysmorphic facies and thin corpus callosum</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1776912" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with dysmorphic facies, impaired speech, and hypotonia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1857802" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with early-onset parkinsonism and behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823957" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with epilepsy and brain atrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1377894" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with epilepsy, cataracts, feeding difficulties, and delayed brain myelination</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824014" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with eye movement abnormalities and ataxia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824005" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with facial dysmorphism, absent language, and pseudo-pelger-huet anomaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823953" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with gait disturbance, dysmorphic facies, and behavioral abnormalities, X-linked</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824024" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with growth retardation, dysmorphic facies, and corpus callosum abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794234" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hearing loss and spasticity</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684874" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia and autistic features with or without hyperkinetic movements</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794187" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia and brain abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794184" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia and dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841290" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia and speech delay, with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1854654" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia, brain anomalies, distinctive facies, and absent language</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1840880" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia, dysmorphic facies, and skeletal anomalies, with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824058" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia, dysmorphic facies, and skin abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1857550" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia, feeding difficulties, facial dysmorphism, and brain abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1812577" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia, impaired speech, and behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823986" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia, language delay, and skeletal defects with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1710110" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia, microcephaly, and seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934610" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia, seizures, and absent language</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794216" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with impaired language and ataxia and with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1847194" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with impaired language, behavioral abnormalities, and dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1681181" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with impaired speech and hyperkinetic movements</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1781627" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with infantile epileptic spasms</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823969" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with intention tremor, pyramidal signs, dyspraxia, and ocular anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841001" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with language delay and behavioral abnormalities, with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1805816" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with language delay and seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1850358" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with language delay and variable cognitive abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1708389" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with language impairment and behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1719418" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with microcephaly and dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841260" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with microcephaly and movement abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841049" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with microcephaly and speech delay, with or without brain abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823998" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with microcephaly, cerebral atrophy, and visual impairment</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1810140" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with microcephaly, hypotonia, nystagmus, and seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1731507" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with microcephaly, impaired language, and gait abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1764121" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with microcephaly, impaired language, epilepsy, and gait abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1615361" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with microcephaly, seizures, and cortical atrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1385580" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with midbrain and hindbrain malformations</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1052640" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with motor abnormalities, seizures, and facial dysmorphism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1647077" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with movement abnormalities, abnormal gait, and autistic features</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1803456" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with neuromuscular and skeletal abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684757" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with nonspecific brain abnormalities and with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1714862" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with or without autistic features and/or structural brain abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1645968" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with or without seizures and gait abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1675664" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with or without variable brain abnormalities; NEDBA</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1802087" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with or without variable movement or behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1804653" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with poor growth and skeletal anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824061" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with poor growth, large ears, and dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1637031" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with poor language and loss of hand skills</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1736667" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with progressive spasticity and brain white matter abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648345" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with regression, abnormal movements, loss of speech, and seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1714169" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with relative macrocephaly and with or without cardiac or endocrine anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1708579" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with seizures, hypotonia, and brain imaging abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823982" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with seizures, microcephaly, and brain abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1840932" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with seizures, spasticity, and complete or partial agenesis of the corpus callosum</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1622162" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with severe motor impairment and absent language</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823958" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with severe motor impairment, absent language, cerebral hypomyelination, and brain atrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648309" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with spasticity and poor growth</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1781371" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with spasticity, cataracts, and cerebellar hypoplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823967" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with speech delay and variable ocular anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1758434" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with speech impairment and dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824025" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with speech impairment and with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684774" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with visual defects and brain anomalies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1619876" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder, mitochondrial, with abnormal movements and lactic acidosis, with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1712714" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental, jaw, eye, and digital syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794194" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental-craniofacial syndrome with variable renal and cardiac abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_348553" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuroectodermal melanolysosomal disease</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1778926" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurofacioskeletal syndrome with or without renal agenesis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419089" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurofibromatosis-Noonan syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_864165" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurologic, endocrine, and pancreatic disease, multisystem, infantile-onset 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684689" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuromuscular disease and ocular or auditory anomalies with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1857169" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuromuscular disorder, congenital, with dysmorphic facies</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340540" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronal ceroid lipofuscinosis 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_155549" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronal ceroid lipofuscinosis 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376792" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronal ceroid lipofuscinosis 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355328" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronal ceroid lipofuscinosis 8 northern epilepsy variant</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_332304" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronal ceroid lipofuscinosis 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824007" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronopathy, distal hereditary motor, autosomal dominant 10</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1856205" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronopathy, distal hereditary motor, autosomal recessive 11, with spasticity</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1863661" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuroocular syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684841" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurooculocardiogenitourinary syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841013" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurooculorenal syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481798" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuropathy, hereditary sensory, type 2C</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_6723" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neutral 1 amino acid transport defect</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_220983" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nicolaides-Baraitser syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78650" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Niemann-Pick disease, type A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_465922" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Niemann-Pick disease, type C1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335942" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Niemann-Pick disease, type C2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_442700" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nijmegen breakage syndrome-like disorder</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1715748" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Nizon-Isidor syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_483740" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Non-acquired combined pituitary hormone deficiency with spine abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1638960" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Noonan syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1761918" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Noonan syndrome 13</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_344290" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Noonan syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_349931" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Noonan syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_339908" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Noonan syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370589" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Noonan syndrome 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462320" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Noonan syndrome 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_815563" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Noonan syndrome 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1379805" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Noonan syndrome-like disorder with loose anagen hair 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816654" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Obesity due to CEP19 deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767139" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Obesity due to leptin receptor gene deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462653" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Obesity, hyperphagia, and developmental delay</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338025" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Oculo-palato-cerebral syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163214" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Oculocerebrocutaneous syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167236" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Oculodentodigital dysplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340516" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Oculorenocerebellar syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_443944" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Odontotrichomelic syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934706" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Okur-Chung neurodevelopmental syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_342472" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Oliver syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_318972" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ophthalmoplegia-intellectual disability-lingua scrotalis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934595" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Optic atrophy 11</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_326915" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Optic atrophy 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75692" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ornithine carbamoyltransferase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_96069" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Orofacial-digital syndrome III</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824021" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Orofaciodigital syndrome 19</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_307142" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Orofaciodigital syndrome I</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_411200" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Orofaciodigital syndrome type 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_358131" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Orofaciodigital syndrome V</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_416694" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Orofaciodigital syndrome XI</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347149" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Osteodysplastic primordial dwarfism, type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766801" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Osteogenesis imperfecta type 13</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_343981" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Osteogenesis imperfecta type 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337979" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Osteopenia-intellectual disability-sparse hair syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_91042" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Osteopetrosis with renal tubular acidosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1802083" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Osteoporosis, childhood- or juvenile-onset, with developmental delay</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767579" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Osteosclerotic metaphyseal dysplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337064" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Oto-palato-digital syndrome, type II</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_333107" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pachygyria-intellectual disability-epilepsy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120514" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pallister-Hall syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_411554" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Paraplegia-intellectual disability-hyperkeratosis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_358366" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Parastremmatic dwarfism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1808333" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Parenti-mignot neurodevelopmental syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_365037" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Paris-Trousseau thrombocytopenia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1845571" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Parkinson disease 25, autosomal recessive early-onset, with impaired intellectual development</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337969" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Parkinsonian-pyramidal syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1808365" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Parkinsonism-dystonia 3, childhood-onset</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163237" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Partington syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_373160" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">PCWH syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_10617" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pelger-Huët anomaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_61440" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pelizaeus-Merzbacher disease</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82890" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pendred syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934709" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">PERCHING syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1809728" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peripheral motor neuropathy, childhood-onset, biotin-responsive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648480" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peripheral neuropathy, autosomal recessive, with or without impaired intellectual development</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_334110" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Periventricular heterotopia with microcephaly, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934636" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Periventricular nodular heterotopia 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1718470" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Periventricular nodular heterotopia 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766969" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peroxisome biogenesis disorder 14B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_763187" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peroxisome biogenesis disorder 2A (Zellweger)</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_763148" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peroxisome biogenesis disorder 2B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766851" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peroxisome biogenesis disorder 4B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766854" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peroxisome biogenesis disorder 5A (Zellweger)</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766874" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peroxisome biogenesis disorder 8B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_440765" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peroxisome biogenesis disorder 9B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_763607" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Peroxisome biogenesis disorder type 3B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_67390" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pfeiffer syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_19244" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Phenylketonuria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_400935" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">PHGDH deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1641154" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">PHIP-related behavioral problems-intellectual disability-obesity-dysmorphic features syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370358" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Phosphoribosylpyrophosphate synthetase superactivity</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_358177" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Piebald trait-neurologic defects syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_356049" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pierpont syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_6708" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pigmentary pallidal degeneration</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1619150" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pilarowski-Bjornsson syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82728" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pili torti-deafness syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_414421" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pituitary hormone deficiency, combined, 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_894862" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">PMP22-RAI1 contiguous gene duplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684718" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Poirier-Bienvenu neurodevelopmental syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_924305" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Polydactyly, postaxial, type A1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370203" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Polyhydramnios, megalencephaly, and symptomatic epilepsy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816735" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Polymicrogyria, bilateral perisylvian, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_762040" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pontine tegmental cap dysplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335969" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pontocerebellar hypoplasia type 1A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862925" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pontocerebellar hypoplasia type 2E</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767140" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pontocerebellar hypoplasia type 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767123" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pontocerebellar hypoplasia type 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862791" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pontocerebellar hypoplasia type 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934724" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pontocerebellar hypoplasia, type 2F</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_324636" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Posterior column ataxia-retinitis pigmentosa syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_318657" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Potocki-Shaffer syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_46057" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Prader-Willi syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_374294" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Prieto syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162911" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Primrose syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_224702" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Progeroid short stature with pigmented nevi</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1847098" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Progressive external ophthalmoplegia with mitochondrial dna deletions, autosomal recessive 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_388595" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Progressive myoclonic epilepsy type 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1680582" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Progressive myoclonic epilepsy type 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1800305" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Progressive spondyloepimetaphyseal dysplasia-short stature-short fourth metatarsals-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120645" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Proline dehydrogenase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648310" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Proteasome-associated autoinflammatory syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_96043" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Prune belly syndrome with pulmonic stenosis, intellectual disability, and deafness</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_10988" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pseudo-Hurler polydystrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98378" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pseudoachondroplastic spondyloepiphyseal dysplasia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_420958" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pseudohypoparathyroidism type 1C</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_488447" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pseudohypoparathyroidism type I A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163218" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pseudoprogeria syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_10995" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pseudopseudohypoparathyroidism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376629" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pseudouridinuria and mental defect</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863794" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">PURA-related severe neonatal hypotonia-seizures-encephalopathy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75653" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Purine-nucleoside phosphorylase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482429" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">PYCR1-related de Barsy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340341" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pyridoxine-dependent epilepsy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_18801" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pyruvate carboxylase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_326486" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pyruvate dehydrogenase E1-alpha deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_343383" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pyruvate dehydrogenase E3-binding protein deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_332448" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pyruvate dehydrogenase phosphatase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1644017" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">RAB23-related Carpenter syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824042" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rabin-Pappas syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_61235" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Radial aplasia-thrombocytopenia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1778557" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Radio-Tartaglia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_481757" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rafiq syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1388282" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rahman syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208669" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ramon syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_418932" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ramos-Arroyo syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794271" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rauch-Steindl syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167070" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Recombinant 8 syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1798947" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Recurrent metabolic encephalomyopathic crises-rhabdomyolysis-cardiac arrhythmia-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_339002" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Renal coloboma syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208670" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Renpenning syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340317" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Retinitis pigmentosa-intellectual disability-deafness-hypogenitalism syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347072" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rhizomelic chondrodysplasia punctata type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_341734" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rhizomelic chondrodysplasia punctata type 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794223" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rhizomelic dysplasia, Ain-Naz type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419284" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ring chromosome 14</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_897005" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ritscher-Schinzel syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1744611" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ritscher-Schinzel syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_95931" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Roberts-SC phocomelia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684753" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rothmund-Thomson syndrome type 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_350477" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rubinstein-Taybi syndrome due to 16p13.3 microdeletion</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1639327" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rubinstein-Taybi syndrome due to CREBBP mutations</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462291" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Rubinstein-Taybi syndrome due to EP300 haploinsufficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120520" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ruvalcaba syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163238" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sabinas brittle hair syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75693" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Saccharopinuria</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_64221" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Saethre-Chotzen syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_203368" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Salla disease</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_326461" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">SCARF syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1807366" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Schaaf-Yang syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_164078" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Schimke immuno-osseous dysplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120517" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Schinzel-Giedion syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462730" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Schizophrenia 15</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767257" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Schuurs-Hoeijmakers syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1647990" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Schwartz-Jampel syndrome type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1637056" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Seckel syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1855399" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Seckel syndrome 11</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462537" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Seckel syndrome 5</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_766496" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Seckel syndrome 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_856014" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Seckel syndrome 8</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_377707" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Seizures, benign familial neonatal, 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_343450" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Seizures-intellectual disability due to hydroxylysinuria syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1639722" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Senior-Loken syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_393098" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Severe achondroplasia-developmental delay-acanthosis nigricans syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1656239" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Severe feeding difficulties-failure to thrive-microcephaly due to ASXL3 deficiency syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_902346" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Severe intellectual disability-corpus callosum agenesis-facial dysmorphism-cerebellar ataxia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767363" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Severe intellectual disability-progressive spastic diplegia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167088" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Severe X-linked intellectual disability, Gustavson type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934639" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Shashi-Pena syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1778119" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Short stature, facial dysmorphism, and skeletal anomalies with or without cardiac anomalies 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1782253" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Short stature, facial dysmorphism, and skeletal anomalies with or without cardiac anomalies 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934653" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Short stature, rhizomelic, with microcephaly, micrognathia, and developmental delay</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355971" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Short stature-auditory canal atresia-mandibular hypoplasia-skeletal anomalies syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934656" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Short stature-brachydactyly-obesity-global developmental delay syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_357988" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Short stature-craniofacial anomalies-genital hypoplasia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_767523" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Short ulna-dysmorphism-hypotonia-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816505" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Short-rib thoracic dysplasia 10 with or without polydactyly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_231160" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Shprintzen-Goldberg syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_924303" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sialidosis type 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934655" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sifrim-Hitz-Weiss syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934771" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">SIN3A-related intellectual disability syndrome due to a point mutation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_11443" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sjögren-Larsson syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_382795" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Skeletal defects, genital hypoplasia, and intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_208660" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Skeletal dysplasia-epilepsy-short stature syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_326949" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Skeletal dysplasia-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_896409" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Skeletal overgrowth-craniofacial dysmorphism-hyperelastic skin-white matter lesions syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_902880" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Skin creases, congenital symmetric circumferential, 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1627555" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Skraban-Deardorff syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_370234" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">SLC35A1-congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_813018" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">SLC35A2-congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_899837" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">SLC39A8-CDG</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_61231" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Smith-Lemli-Opitz syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162881" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Smith-Magenis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_854757" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Smith-McCort dysplasia 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_811489" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Smith-McCort dysplasia 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648495" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Snijders Blok-Campeau syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684801" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Snijders blok-fisher syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_61232" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sotos syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1680026" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic ataxia 9, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376526" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic diplegia and intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1844217" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia 18a, autosomal dominant</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1710411" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia 82, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1801286" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia 86, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841210" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia 90A, autosomal dominant</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841214" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia 90B, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1846222" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia 91, autosomal dominant, with or without cerebellar ataxia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_336010" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia, ataxia, and intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_924883" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia, intellectual disability, nystagmus, and obesity</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376520" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia-glaucoma-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355816" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia-nephritis-deafness syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_897828" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic paraplegia-severe developmental delay-epilepsy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376519" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic tetraplegia-retinitis pigmentosa-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_900192" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spastic tetraplegia-thin corpus callosum-progressive postnatal microcephaly syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376518" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinal muscular atrophy with intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1856346" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinal muscular atrophy with microcephaly and mental subnormality</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648308" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia 42, early-onset, severe, with neurodevelopmental deficits</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1636349" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia 47</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_344297" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia type 13</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338301" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia type 15/16</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_375311" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia type 21</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_350085" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia type 29</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934748" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia, autosomal recessive 22</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1667331" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia, autosomal recessive 23</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1788435" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia, autosomal recessive 29</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1778853" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia, autosomal recessive 30</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1683470" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419314" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Split hand-foot malformation 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_325070" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Split hand-foot malformation 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_266247" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sponastrime dysplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355314" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spondyloepimetaphyseal dysplasia, Genevieve type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1844202" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spondyloepimetaphyseal dysplasia, Guo-Campeau type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_463613" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spondyloepimetaphyseal dysplasia, Maroteaux type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_147134" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spondyloepimetaphyseal dysplasia, Strudwick type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338603" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spondyloepiphyseal dysplasia tarda, Kohn type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_373381" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spondyloepiphyseal dysplasia with congenital joint dislocations</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_930816" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spondyloepiphyseal dysplasia, nishimura type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1392124" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">SRD5A3-congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_860832" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">SSR4-congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1375936" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Stankiewicz-Isidor syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_383183" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Stevenson-Carey syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1823980" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Stickler syndrome, type 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934758" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Striatal degeneration, autosomal dominant 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_374113" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Striatonigral degeneration, infantile, mitochondrial</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684861" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Structural brain anomalies with impaired intellectual development and craniosynostosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794145" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">STT3A-congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419309" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">STT3B-congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_21361" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sturge-Weber syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1803541" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Stüve-Wiedemann syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_124340" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Succinate-semialdehyde dehydrogenase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338583" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sucrosuria, hiatus hernia and intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_381530" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sulfite oxidase deficiency due to molybdenum cofactor deficiency type A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_333405" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability 12</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_372646" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability 14</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_477091" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability 17</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_902184" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability 34</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337403" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_437111" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability 94</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337376" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability Abidi type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335139" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability Claes-Jensen type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337257" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability Hedera type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_477095" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability Nascimento type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_477037" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability Raymond type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_395523" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability Shrimpton type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337375" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability Siderius type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162918" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability Snyder type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338528" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">T-substance anomaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862982" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tatton-Brown-Rahman overgrowth syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1809276" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Teebi hypertelorism syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934745" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">TELO2-related intellectual disability-neurodevelopmental disorder</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_864147" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tenorio syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1810348" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tessadori-van Haaften neurodevelopmental syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1803228" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tessadori-van Haaften neurodevelopmental syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824083" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tessadori-Van Haaften neurodevelopmental syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1804234" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tessadori-Van Haaften neurodevelopmental syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_444003" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tetraamelia with ectodermal dysplasia and lacrimal duct abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462289" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">THOC6-related developmental delay-microcephaly-facial dysmorphism syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1856296" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Thrombocytopenia 13, syndromic</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_348284" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Thumb deformity-alopecia-pigmentation anomaly syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_396073" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Thumb stiffness-brachydactyly-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_87430" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Thyroglobulin synthesis defect</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_336422" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Thyroid dyshormonogenesis 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_331395" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Timothy syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1724999" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tolchin-Le Caignec syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163225" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Toriello-Carey syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1635275" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Townes-Brocks syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_137976" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Transcobalamin II deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1814561" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Transketolase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_66078" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Treacher Collins syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1712280" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Treacher Collins syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338532" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichomegaly-retina pigmentary degeneration-dwarfism syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_140929" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichorhinophalangeal dysplasia type I</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_349899" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichorhinophalangeal syndrome, type III</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355730" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichothiodystrophy 1, photosensitive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_905904" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichothiodystrophy 2, photosensitive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_865608" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichothiodystrophy 3, photosensitive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_272036" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichothiodystrophy 4, nonphotosensitive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794268" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trichothiodystrophy 9, nonphotosensitive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82780" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Triglyceride storage disease with ichthyosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98473" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trigonocephaly 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_374138" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Trigonocephaly-short stature-developmental delay syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78680" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tryptophanuria with dwarfism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_344288" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tuberous sclerosis 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_348170" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tuberous sclerosis 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1683283" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Turnpenny-fry syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1646646" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">TWIST1-related craniosynostosis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75687" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tyrosinemia type II</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_199598" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">UDPglucose-4-epimerase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98046" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ullrich congenital muscular dystrophy 1A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1859300" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ullrich congenital muscular dystrophy 1B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_335320" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Uruguay Faciocardiomusculoskeletal syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794162" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Usmani-Riazuddin syndrome, autosomal dominant</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794204" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Usmani-Riazuddin syndrome, autosomal recessive</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_811762" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Uveal coloboma-cleft lip and palate-intellectual disability</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_162920" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Van den Bosch syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_322127" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Van den Ende-Gupta syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1644627" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Van Maldergem syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816205" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Van Maldergem syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1849794" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Variegate porphyria, childhood-onset</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_65085" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Velocardiofacial syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1621146" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Vertebral, cardiac, renal, and limb defects syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1647785" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ververi-Brady syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794165" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">VISS syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1776566" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Vissers-Bodmer syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_398476" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Waardenburg syndrome type 2E</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_86948" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Waardenburg syndrome type 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_333142" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Warburg micro syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462008" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Warsaw breakage syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120511" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Weaver syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_350610" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Weismann-Netter syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1785087" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">White-Kernohan syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340266" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Wiedemann-Steiner syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_59799" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Williams syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_382718" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Wilms tumor, aniridia, genitourinary anomalies, intellectual disability, and obesity syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_333393" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Wilson-Turner syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1641635" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Wolfram syndrome 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_325511" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Wolfram syndrome, mitochondrial form</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_83337" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Woodhouse-Sakati syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163228" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Worster-Drought syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_98030" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Wrinkly skin syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_813072" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked colobomatous microphthalmia-microcephaly-intellectual disability-short stature syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_374339" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked complicated corpus callosum dysgenesis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_477107" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked dominant chondrodysplasia, Chassaing-Lacombe type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648389" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked external auditory canal atresia-dilated internal auditory canal-facial dysmorphism syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75552" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked hydrocephalus syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_86937" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked ichthyosis with steryl-sulfatase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337334" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked intellectual disability Cabezas type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_167096" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked intellectual disability with marfanoid habitus</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_813060" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked intellectual disability, Cantagrel type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_374193" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked intellectual disability, Schimke type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_930741" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked intellectual disability, van Esch type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_336920" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked intellectual disability-cerebellar hypoplasia syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_163232" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked intellectual disability-psychosis-macroorchidism syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_336862" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked intellectual disability-retinitis pigmentosa syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_501947" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked intellectual disability-seizures-psoriasis syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_901885" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked intellectual disability-short stature-overweight syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_374264" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked myopathy with excessive autophagy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_394718" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked non progressive cerebellar ataxia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_336844" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked reticulate pigmentary disorder</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376281" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked spondyloepimetaphyseal dysplasia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_82775" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Xeroderma pigmentosum group A</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_78643" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Xeroderma pigmentosum group B</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_75656" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Xeroderma pigmentosum, group D</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120612" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Xeroderma pigmentosum, group F</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_935016" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Xq25 microduplication syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794247" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Zaki syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_416693" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Zechi-Ceide syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_897567" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Zimmermann-Laband syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684740" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Zimmermann-laband syndrome 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934663" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">ZTTK syndrome</a></div></span></div></div>
</div>
<div class="portlet mgSection" id="ID_105">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Professional_guidelines">Professional guidelines</h1><a sid="105" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">PubMed<a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#guidelinesHelpPM"><img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a></h3>
<div class="nl"><a target="_blank" href="/pubmed/32026885">Fragile X syndrome: clinical presentation, pathology and treatment.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Salcedo-Arellano MJ,
Hagerman RJ,
Martínez-Cerdeño V</span><br />
<span class="medgenPMjournal">Gac Med Mex</span>
2020;156(1):60-66.
doi: 10.24875/GMM.19005275.
<span class="bold">PMID: </span><a href="/pubmed/32026885" target="_blank">32026885</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30982989">Suggested guidelines for the diagnosis and management of urea cycle disorders: First revision.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Häberle J,
Burlina A,
Chakrapani A,
Dixon M,
Karall D,
Lindner M,
Mandel H,
Martinelli D,
Pintos-Morell G,
Santer R,
Skouma A,
Servais A,
Tal G,
Rubio V,
Huemer M,
Dionisi-Vici C</span><br />
<span class="medgenPMjournal">J Inherit Metab Dis</span>
2019 Nov;42(6):1192-1230.
Epub 2019 May 15
doi: 10.1002/jimd.12100.
<span class="bold">PMID: </span><a href="/pubmed/30982989" target="_blank">30982989</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28075089">Autism Spectrum Disorder: Primary Care Principles.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Sanchack KE,
Thomas CA</span><br />
<span class="medgenPMjournal">Am Fam Physician</span>
2016 Dec 15;94(12):972-979.
<span class="bold">PMID: </span><a href="/pubmed/28075089" target="_blank">28075089</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22intellectual%20disability%22%5Btiab%3A~0%5D)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">See all (760)</a></div></div>
</div>
<div class="display-none help-popup" id="guidelinesHelpPM">These guidelines are articles in PubMed that match specific search criteria developed by MedGen to capture the most relevant practice guidelines. This list may not be comprehensive and may include broader topics as well. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div><div class="display-none help-popup" id="guidelinesHelpCurated">These guidelines are manually curated by the MedGen team
to supplement articles available in PubMed. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div>
<div class="portlet mgSection" id="ID_103">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_clinical_studies">Recent clinical studies</h1><a sid="103" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">Etiology</h3>
<div class="nl"><a target="_blank" href="/pubmed/35421380">Mental health problems in children with intellectual disability.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Totsika V,
Liew A,
Absoud M,
Adnams C,
Emerson E</span><br />
<span class="medgenPMjournal">Lancet Child Adolesc Health</span>
2022 Jun;6(6):432-444.
Epub 2022 Apr 11
doi: 10.1016/S2352-4642(22)00067-0.
<span class="bold">PMID: </span><a href="/pubmed/35421380" target="_blank">35421380</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31104540">Cancer and breast cancer awareness interventions in an intellectual disability context: A review of the literature.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Walsh S,
O'Mahony M,
Lehane E,
Farrell D,
Taggart L,
Kelly L,
Sahm L,
Byrne A,
Corrigan M,
Caples M,
Martin AM,
Tabirca S,
Corrigan MA,
Hegarty J</span><br />
<span class="medgenPMjournal">J Intellect Disabil</span>
2021 Mar;25(1):131-145.
Epub 2019 May 19
doi: 10.1177/1744629519850999.
<span class="bold">PMID: </span><a href="/pubmed/31104540" target="_blank">31104540</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21236634">Prevalence of intellectual disability: a meta-analysis of population-based studies.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Maulik PK,
Mascarenhas MN,
Mathers CD,
Dua T,
Saxena S</span><br />
<span class="medgenPMjournal">Res Dev Disabil</span>
2011 Mar-Apr;32(2):419-36.
Epub 2011 Jan 13
doi: 10.1016/j.ridd.2010.12.018.
<span class="bold">PMID: </span><a href="/pubmed/21236634" target="_blank">21236634</a></div>
<div class="nl"><a target="_blank" href="/pubmed/3332359">Mental retardation.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Healy A</span><br />
<span class="medgenPMjournal">Pediatr Rev</span>
1987 Jul;9(1):15-22.
doi: 10.1542/pir.9-1-15.
<span class="bold">PMID: </span><a href="/pubmed/3332359" target="_blank">3332359</a></div>
<div class="nl"><a target="_blank" href="/pubmed/4259793">Down's syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wilkins RH,
Brody IA</span><br />
<span class="medgenPMjournal">Arch Neurol</span>
1971 Jul;25(1):88-90.
doi: 10.1001/archneur.1971.00490010098013.
<span class="bold">PMID: </span><a href="/pubmed/4259793" target="_blank">4259793</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Intellectual%20disability%22%20AND%20Etiology%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (16690)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/36441387">Deciphering Intellectual Disability.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gupta N</span><br />
<span class="medgenPMjournal">Indian J Pediatr</span>
2023 Feb;90(2):160-167.
Epub 2022 Nov 28
doi: 10.1007/s12098-022-04345-3.
<span class="bold">PMID: </span><a href="/pubmed/36441387" target="_blank">36441387</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34700345">An Overview of Intellectual Disability: Definition, Diagnosis, Classification, and Systems of Supports (12th ed.).</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Schalock RL,
Luckasson R,
Tassé MJ</span><br />
<span class="medgenPMjournal">Am J Intellect Dev Disabil</span>
2021 Nov 1;126(6):439-442.
doi: 10.1352/1944-7558-126.6.439.
<span class="bold">PMID: </span><a href="/pubmed/34700345" target="_blank">34700345</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29858292">Intellectual Disabilities.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Purugganan O</span><br />
<span class="medgenPMjournal">Pediatr Rev</span>
2018 Jun;39(6):299-309.
doi: 10.1542/pir.2016-0116.
<span class="bold">PMID: </span><a href="/pubmed/29858292" target="_blank">29858292</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29196358">A clinical approach to developmental delay and intellectual disability.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Vasudevan P,
Suri M</span><br />
<span class="medgenPMjournal">Clin Med (Lond)</span>
2017 Dec;17(6):558-561.
doi: 10.7861/clinmedicine.17-6-558.
<span class="bold">PMID: </span><a href="/pubmed/29196358" target="_blank">29196358</a><a href="/pmc/articles/PMC6297696" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28577608">Intellectual Disability and Language Disorder.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Marrus N,
Hall L</span><br />
<span class="medgenPMjournal">Child Adolesc Psychiatr Clin N Am</span>
2017 Jul;26(3):539-554.
doi: 10.1016/j.chc.2017.03.001.
<span class="bold">PMID: </span><a href="/pubmed/28577608" target="_blank">28577608</a><a href="/pmc/articles/PMC5801738" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Intellectual%20disability%22%20AND%20Diagnosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (17134)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/37543051">A systematic review of cannabidiol trials in neurodevelopmental disorders.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Parrella NF,
Hill AT,
Enticott PG,
Barhoun P,
Bower IS,
Ford TC</span><br />
<span class="medgenPMjournal">Pharmacol Biochem Behav</span>
2023 Sep;230:173607.
Epub 2023 Aug 4
doi: 10.1016/j.pbb.2023.173607.
<span class="bold">PMID: </span><a href="/pubmed/37543051" target="_blank">37543051</a></div>
<div class="nl"><a target="_blank" href="/pubmed/37107712">Medicinal Cannabis for Paediatric Developmental, Behavioural and Mental Health Disorders.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Efron D,
Taylor K</span><br />
<span class="medgenPMjournal">Int J Environ Res Public Health</span>
2023 Apr 7;20(8)
doi: 10.3390/ijerph20085430.
<span class="bold">PMID: </span><a href="/pubmed/37107712" target="_blank">37107712</a><a href="/pmc/articles/PMC10138057" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/36006807">Memantine for autism spectrum disorder.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Brignell A,
Marraffa C,
Williams K,
May T</span><br />
<span class="medgenPMjournal">Cochrane Database Syst Rev</span>
2022 Aug 25;8(8):CD013845.
doi: 10.1002/14651858.CD013845.pub2.
<span class="bold">PMID: </span><a href="/pubmed/36006807" target="_blank">36006807</a><a href="/pmc/articles/PMC9409629" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/32563898">Expert opinion: Proposed diagnostic and treatment algorithms for Lennox-Gastaut syndrome in adult patients.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Montouris G,
Aboumatar S,
Burdette D,
Kothare S,
Kuzniecky R,
Rosenfeld W,
Chung S</span><br />
<span class="medgenPMjournal">Epilepsy Behav</span>
2020 Sep;110:107146.
Epub 2020 Jun 18
doi: 10.1016/j.yebeh.2020.107146.
<span class="bold">PMID: </span><a href="/pubmed/32563898" target="_blank">32563898</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21524049">Failure to thrive: an update.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Cole SZ,
Lanham JS</span><br />
<span class="medgenPMjournal">Am Fam Physician</span>
2011 Apr 1;83(7):829-34.
<span class="bold">PMID: </span><a href="/pubmed/21524049" target="_blank">21524049</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Intellectual%20disability%22%20AND%20Therapy%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (5519)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/23580204">Death, dying and intellectual disability research.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Todd S,
Bernal J,
Forrester-Jones R</span><br />
<span class="medgenPMjournal">J Appl Res Intellect Disabil</span>
2013 May;26(3):183-5.
doi: 10.1111/jar.12027.
<span class="bold">PMID: </span><a href="/pubmed/23580204" target="_blank">23580204</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22267097">Osteoporosis in adults with intellectual disabilities.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Petrone LR</span><br />
<span class="medgenPMjournal">South Med J</span>
2012 Feb;105(2):87-92.
doi: 10.1097/SMJ.0b013e3182427042.
<span class="bold">PMID: </span><a href="/pubmed/22267097" target="_blank">22267097</a></div>
<div class="nl"><a target="_blank" href="/pubmed/17901676">Revesz syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Riyaz A,
Riyaz N,
Jayakrishnan MP,
Mohamed Shiras PT,
Ajith Kumar VT,
Ajith BS</span><br />
<span class="medgenPMjournal">Indian J Pediatr</span>
2007 Sep;74(9):862-3.
doi: 10.1007/s12098-007-0155-2.
<span class="bold">PMID: </span><a href="/pubmed/17901676" target="_blank">17901676</a></div>
<div class="nl"><a target="_blank" href="/pubmed/1587514">Mental retardation and psychiatric illness.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Vitiello B,
Behar D</span><br />
<span class="medgenPMjournal">Hosp Community Psychiatry</span>
1992 May;43(5):494-9.
doi: 10.1176/ps.43.5.494.
<span class="bold">PMID: </span><a href="/pubmed/1587514" target="_blank">1587514</a></div>
<div class="nl"><a target="_blank" href="/pubmed/6028899">Children of incest.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Adams MS,
Neel JV</span><br />
<span class="medgenPMjournal">Pediatrics</span>
1967 Jul;40(1):55-62.
<span class="bold">PMID: </span><a href="/pubmed/6028899" target="_blank">6028899</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Intellectual%20disability%22%20AND%20Prognosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (7062)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/34428272">Impact of Different Pairings of Respondents on Scores on the Supports Intensity Scale-Adult Version (SIS-A).</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hagiwara M,
Rifenbark GG,
Shogren KA,
Thompson JR</span><br />
<span class="medgenPMjournal">Am J Intellect Dev Disabil</span>
2021 Sep 1;126(5):361-376.
doi: 10.1352/1944-7558-126.5.361.
<span class="bold">PMID: </span><a href="/pubmed/34428272" target="_blank">34428272</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26179960">Biochemical and molecular predictors for prognosis in nonketotic hyperglycinemia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Swanson MA,
Coughlin CR Jr,
Scharer GH,
Szerlong HJ,
Bjoraker KJ,
Spector EB,
Creadon-Swindell G,
Mahieu V,
Matthijs G,
Hennermann JB,
Applegarth DA,
Toone JR,
Tong S,
Williams K,
Van Hove JL</span><br />
<span class="medgenPMjournal">Ann Neurol</span>
2015 Oct;78(4):606-18.
Epub 2015 Aug 10
doi: 10.1002/ana.24485.
<span class="bold">PMID: </span><a href="/pubmed/26179960" target="_blank">26179960</a><a href="/pmc/articles/PMC4767401" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23646966">Predicting pharmacoresistance in pediatric epilepsy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Wirrell EC</span><br />
<span class="medgenPMjournal">Epilepsia</span>
2013 May;54 Suppl 2:19-22.
doi: 10.1111/epi.12179.
<span class="bold">PMID: </span><a href="/pubmed/23646966" target="_blank">23646966</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22954271">Predictors of bronchopulmonary dysplasia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Trembath A,
Laughon MM</span><br />
<span class="medgenPMjournal">Clin Perinatol</span>
2012 Sep;39(3):585-601.
doi: 10.1016/j.clp.2012.06.014.
<span class="bold">PMID: </span><a href="/pubmed/22954271" target="_blank">22954271</a><a href="/pmc/articles/PMC3443959" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/11728413">Neonatal biochemical screening for disease.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Clague A,
Thomas A</span><br />
<span class="medgenPMjournal">Clin Chim Acta</span>
2002 Jan;315(1-2):99-110.
doi: 10.1016/s0009-8981(01)00716-1.
<span class="bold">PMID: </span><a href="/pubmed/11728413" target="_blank">11728413</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Intellectual%20disability%22%20AND%20Clinical%20prediction%20guides%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (10751)</a></div></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_systematic_reviews">Recent systematic reviews</h1><a sid="104" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
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<div class="nl"><a target="_blank" href="/pubmed/35799257">Physical activity and mental health in children and adolescents with intellectual disabilities: a meta-analysis using the RE-AIM framework.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Yang W,
Liang X,
Sit CH</span><br />
<span class="medgenPMjournal">Int J Behav Nutr Phys Act</span>
2022 Jul 7;19(1):80.
doi: 10.1186/s12966-022-01312-1.
<span class="bold">PMID: </span><a href="/pubmed/35799257" target="_blank">35799257</a><a href="/pmc/articles/PMC9261031" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33985586">Calcium channelopathies and intellectual disability: a systematic review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kessi M,
Chen B,
Peng J,
Yan F,
Yang L,
Yin F</span><br />
<span class="medgenPMjournal">Orphanet J Rare Dis</span>
2021 May 13;16(1):219.
doi: 10.1186/s13023-021-01850-0.
<span class="bold">PMID: </span><a href="/pubmed/33985586" target="_blank">33985586</a><a href="/pmc/articles/PMC8120735" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31182824">Meta-analysis and multidisciplinary consensus statement: exome sequencing is a first-tier clinical diagnostic test for individuals with neurodevelopmental disorders.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Srivastava S,
Love-Nichols JA,
Dies KA,
Ledbetter DH,
Martin CL,
Chung WK,
Firth HV,
Frazier T,
Hansen RL,
Prock L,
Brunner H,
Hoang N,
Scherer SW,
Sahin M,
Miller DT;
NDD Exome Scoping Review Work Group</span><br />
<span class="medgenPMjournal">Genet Med</span>
2019 Nov;21(11):2413-2421.
Epub 2019 Jun 11
doi: 10.1038/s41436-019-0554-6.
<span class="bold">PMID: </span><a href="/pubmed/31182824" target="_blank">31182824</a><a href="/pmc/articles/PMC6831729" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25157020">Comprehensive evaluation of the child with intellectual disability or global developmental delays.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Moeschler JB,
Shevell M;
Committee on Genetics</span><br />
<span class="medgenPMjournal">Pediatrics</span>
2014 Sep;134(3):e903-18.
doi: 10.1542/peds.2014-1839.
<span class="bold">PMID: </span><a href="/pubmed/25157020" target="_blank">25157020</a><a href="/pmc/articles/PMC9923626" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24700618">Epidemiology of fragile X syndrome: a systematic review and meta-analysis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hunter J,
Rivero-Arias O,
Angelov A,
Kim E,
Fotheringham I,
Leal J</span><br />
<span class="medgenPMjournal">Am J Med Genet A</span>
2014 Jul;164A(7):1648-58.
Epub 2014 Apr 3
doi: 10.1002/ajmg.a.36511.
<span class="bold">PMID: </span><a href="/pubmed/24700618" target="_blank">24700618</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Intellectual%20disability%22%20AND%20systematic%5Bsb%5D%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (759)</a></div></div>
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<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A1%5F1" target="_blank">Analyte (1)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (200)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A2%5F29" target="_blank">Detection of homozygosity (6)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A3%5F23" target="_blank">FISH-interphase (2)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A3%5F24" target="_blank">FISH-metaphase (2)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A3%5F32" target="_blank">Karyotyping (14)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A2%5F15" target="_blank">Methylation analysis (2)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A%5F" target="_blank">Multicolor FISH (M-FISH)/Spectral Karyotyping™ (SKY™) (1)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A2%5F18" target="_blank">Mutation scanning of select exons (1)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A2%5F17" target="_blank">Mutation scanning of the entire coding region (1)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A2%5F9" target="_blank">Sequence analysis of select exons (2)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (197)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A2%5F19" target="_blank">Targeted variant analysis (4)</a></li>
<li><a href="/gtr/tests?term=C3714756%5bDISCUI%5d&amp;filter=method%3A2%5F20" target="_blank">Uniparental disomy study (UPD) (1)</a></li>
<li class="portletSeeAll portletSeeAllPad"><total><a href="/gtr/tests?term=C3714756%5bDISCUI%5d" target="_blank">See all (237)</a></total></li>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Clinical_resources">Clinical resources</h1><a sid="119" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Expert=319658" target="_blank">Orphanet</a></li><li><a href="https://clinicaltrials.gov/search?cond=Intellectual%20disability" target="_blank">ClinicalTrials.gov</a></li></ul></div>
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<div class="portlet_content ln"><ul class="a_poppers"><li><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22intellectual%20disability%22%5Btiab%3A~0%5D)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">PubMed</a><div class="help-popup">See practice and clinical guidelines in PubMed. The search results may include broader topics and may not capture all published guidelines. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div></li><li><a target="_blank" href="/books/?term=((%22clinical%20guidelines%22%5BResource%20Type%5D)%20OR%20%22practice%20guideline%22%5BPublication%20Type%5D)%20AND%20(%22Intellectual%20disability%22)">Bookshelf</a><div class="help-popup">See practice and clinical guidelines in NCBI Bookshelf. The search results may include broader topics and may not capture all published guidelines. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div></li></ul></div>
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<div class="portlet_content ln"><ul><li><a href="https://vsearch.nlm.nih.gov/vivisimo/cgi-bin/query-meta?v:project=medlineplus&amp;query=Intellectual%20disability" target="_blank">MedlinePlus</a></li><li><a href="https://rarediseases.info.nih.gov/diseases/11963/disease" target="_blank">NCATS Office of Rare Diseases Research (GARD)</a></li></ul></div>
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