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<meta name="keywords" content="C2678194, angelman-like syndrome x-linked, angelman-like syndrome, x-linked, christianson syndrome, disease or syndrome, intellectual deficit, x-linked, south african type, intellectual developmental disorder, x-linked syndromic, christianson type, intellectual developmental disorder, x-linked, syndromic, christianson type, intellectual disability microcephaly epilepsy and ataxia syndrome, intellectual disability x-linked syndromic christianson type, intellectual disability, microcephaly, epilepsy, and ataxia syndrome, intellectual disability, x-linked syndromic, christianson type, intellectual disability, x-linked, syndromic, christianson type, mental retardation microcephaly epilepsy and ataxia syndrome, mental retardation, microcephaly, epilepsy, and ataxia syndrome, mental retardation, x-linked syndromic, christianson type, mental retardation, x-linked, syndromic, christianson type, mrxs christianson, mrxsch, slc9a6, slc9a6-related syndromic mental retardation, x-linked angelman-like syndrome, x-linked intellectual developmental disorder christianson type, x-linked intellectual disability - craniofacial dysmorphism - epilepsy - ophthalmoplegia - cerebellar atrophy, x-linked intellectual disability, south african type, x-linked intellectual disability-craniofacial dysmorphism-epilepsy-ophthalmoplegia-cerebellar atrophy syndrome, x-linked mental retardation, syndromic, christianson type, x-linked syndromic cognitive disability, christianson type, 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="Christianson syndrome (referred to as CS in this GeneReview), an X-linked disorder, is characterized in males by cognitive dysfunction, behavioral disorder, and neurologic findings (e.g., seizures, ataxia, postnatal microcephaly, and eye movement abnormalities). Males with CS typically present with developmental delay, later meeting criteria for severe intellectual disability (ID). Behaviorally, autism spectrum disorder and hyperactivity are common, and may resemble the behaviors observed in Angelman syndrome. Hypotonia and oropharyngeal dysphagia in infancy may result in failure to thrive. Seizures, typically beginning before age three years, can include infantile spasms and tonic, tonic-clonic, myoclonic, and atonic seizures. Subsequently, regression (e.g., loss of ambulation and ability to feed independently) may occur. Manifestations in heterozygous females range from asymptomatic to mild ID and/or behavioral issues." /><meta name="robots" content="index,nofollow,noarchive" />
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<!--
UID=394455
ConceptID=C2678194
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Christianson syndrome<span class="h1sub">(MRXSCH)</span></div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>394455</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information."><span class="highlight" style="background-color:">C2678194</span></a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonyms:</td>
<td>Angelman-like syndrome X-linked; INTELLECTUAL DEVELOPMENTAL DISORDER, X-LINKED, SYNDROMIC, CHRISTIANSON TYPE; Mental retardation microcephaly epilepsy and ataxia syndrome; MRXS Christianson; MRXSCH; SLC9A6-Related Syndromic Mental Retardation; X-linked mental retardation, syndromic, Christianson type</td></tr>
<tr><td><span class="bold">SNOMED CT: </span></td>
<td>Christianson syndrome (702354007); X-linked Angelman-like syndrome (702354007); X-linked intellectual developmental disorder Christianson type (702354007)</td></tr>
<tr><td>Modes of inheritance:</td>
<td>
<div class="divPopper rprt" id="moi_375779"><div><strong>X-linked recessive inheritance</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375779</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1845977</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Source: Orphanet</div>
<div class="spaceAbove">A mode of inheritance that is observed for recessive traits related to a gene encoded on the X chromosome. In the context of medical genetics, X-linked recessive disorders manifest in males (who have one copy of the X chromosome and are thus hemizygotes), but generally not in female heterozygotes who have one mutant and one normal allele.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375779">This record</a></div></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#moi_375779" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked recessive inheritance</a><span> (Orphanet)</span></div></td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td><a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#target-gene-loc">Gene (location):<img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a><div class="display-none" id="target-gene-loc">
Gene(s) directly associated with<br />
this condition or phenotype.</div></td>
<td><a target="_blank" title="SLC9A6 - ID: 10479 - NCBI Gene" href="/gene/10479" class="medgenPMinfo">SLC9A6</a> (Xq26.3)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>Monarch Initiative:</td>
<td><a href="https://monarchinitiative.org/disease/MONDO:0010278" target="_blank">MONDO:0010278</a></td></tr>
<tr><td>OMIM<span class="superscript">®</span>:</td>
<td><a href="https://omim.org/entry/300243" target="_blank">300243</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=85278">ORPHA85278</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_101">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Disease_characteristics">Disease characteristics</h1><a sid="101" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><div class="excerpt">Excerpted from the <i>GeneReview: </i><a href="/books/NBK475801" target="_blank">Christianson Syndrome</a></div><div>Christianson syndrome (referred to as CS in this GeneReview), an X-linked disorder, is characterized in males by cognitive dysfunction, behavioral disorder, and neurologic findings (e.g., seizures, ataxia, postnatal microcephaly, and eye movement abnormalities). Males with CS typically present with developmental delay, later meeting criteria for severe intellectual disability (ID). Behaviorally, autism spectrum disorder and hyperactivity are common, and may resemble the behaviors observed in Angelman syndrome. Hypotonia and oropharyngeal dysphagia in infancy may result in failure to thrive. Seizures, typically beginning before age three years, can include infantile spasms and tonic, tonic-clonic, myoclonic, and atonic seizures. Subsequently, regression (e.g., loss of ambulation and ability to feed independently) may occur. Manifestations in heterozygous females range from asymptomatic to mild ID and/or behavioral issues. [from <a title="GeneReviews" href="https://www.ncbi.nlm.nih.gov/books/NBK1116" class="defSource" target="_blank">GeneReviews</a>]</div><div class="spaceAbove"><strong>Full text of <i>GeneReview</i> (by section):</strong><br /><a class="medgenPMinfo" href="/books/NBK475801#christianson.Summary" target="NBK475801">Summary</a>  |  <a class="medgenPMinfo" href="/books/NBK475801#christianson.Diagnosis" target="NBK475801">Diagnosis</a>  |  <a class="medgenPMinfo" href="/books/NBK475801#christianson.Clinical_Characteristics" target="NBK475801">Clinical Characteristics</a>  |  <a class="medgenPMinfo" href="/books/NBK475801#christianson.Genetically_Related_Allelic" target="NBK475801">Genetically Related (Allelic) Disorders</a>  |  <a class="medgenPMinfo" href="/books/NBK475801#christianson.Differential_Diagnosis" target="NBK475801">Differential Diagnosis</a>  |  <a class="medgenPMinfo" href="/books/NBK475801#christianson.Management" target="NBK475801">Management</a>  |  <a class="medgenPMinfo" href="/books/NBK475801#christianson.Genetic_Counseling" target="NBK475801">Genetic Counseling</a>  |  <a class="medgenPMinfo" href="/books/NBK475801#christianson.Resources" target="NBK475801">Resources</a>  |  <a class="medgenPMinfo" href="/books/NBK475801#christianson.Molecular_Genetics" target="NBK475801">Molecular Genetics</a>  |  <a class="medgenPMinfo" href="/books/NBK475801#christianson.References" target="NBK475801">References</a>  |  <a class="medgenPMinfo" href="/books/NBK475801#christianson.Chapter_Notes" target="NBK475801">Chapter Notes</a></div><div class="spaceAbove"><strong>Authors:</strong><br />
Eric M Morrow  |  Matthew F Pescosolido   <a href="/books/NBK475801" target="NBK475801" title="NCBI Bookshelf: Christianson Syndrome">view full author information</a></div></div>
</div>
<div class="portlet mgSection" id="ID_117">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Additional_descriptions">Additional descriptions</h1><a sid="117" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><div class="mgSection"><strong>From OMIM</strong><br />The Christianson type of X-linked syndromic intellectual developmental disorder (MRXSCH), which affects males, is characterized by microcephaly, impaired ocular movements, progressive severe global developmental delay, developmental regression, hypotonia, abnormal movements, and early-onset seizures of variable types. Heterozygous female carriers may be unaffected or have mild learning difficulties (summary by Schroer et al., 2010 and Pescosolido et al., 2014).&#13;
Some clinical features of this disorder show overlap with Angelman syndrome (AS; 105830).  <a target="_blank" href="http://www.omim.org/entry/300243">http://www.omim.org/entry/300243</a></div><div class="mgSection"><strong>From MedlinePlus Genetics</strong><br />Christianson syndrome is a disorder that primarily affects the nervous system. This condition becomes apparent in infancy. Its characteristic features include delayed development, intellectual disability, an inability to speak, problems with balance and coordination (ataxia), and difficulty standing or walking. Individuals who do learn to walk lose the ability in childhood. Most affected children also have recurrent seizures (epilepsy), beginning between ages 1 and 2.<br /><br />Other features seen in many people with Christianson syndrome include a small head size (microcephaly); a long, narrow face with prominent nose, jaw, and ears; an open mouth and uncontrolled drooling; and abnormal eye movements. Affected children often have a happy demeanor with frequent smiling and spontaneous laughter.  <a target="_blank" href="https://medlineplus.gov/genetics/condition/christianson-syndrome">https://medlineplus.gov/genetics/condition/christianson-syndrome</a></div></div>
</div>
<div class="portlet mgSection" id="ID_102">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Clinical_features">Clinical features</h1><a sid="102" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat"><strong>From HPO</strong><br />
<div class="divPopper rprt" id="clin_41977"><div><strong>Bowel incontinence</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>41977</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0015732</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Involuntary fecal soiling in adults and children who have usually already been toilet trained.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/41977">Feature record</a> | <a href="/medgen?term=%22Bowel%20incontinence%22%5BClinical%20Features%5D%20OR%2041977%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_22579"><div><strong>Urinary incontinence</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>22579</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0042024</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Loss of the ability to control the urinary bladder leading to involuntary urination.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/22579">Feature record</a> | <a href="/medgen?term=%22Urinary%20incontinence%22%5BClinical%20Features%5D%20OR%2022579%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_98140"><div><strong>Thumbs, congenital Clasped</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98140</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0431886</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">In the resting position, the tip of the thumb is on, or near, the palm, close to the base of the fourth or fifth finger.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98140">Feature record</a> | <a href="/medgen?term=%22Thumbs%2C%20congenital%20Clasped%22%5BClinical%20Features%5D%20OR%2098140%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_387832"><div><strong>Slender finger</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>387832</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857482</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Fingers that are disproportionately narrow (reduced girth) for the hand/foot size or build of the individual.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/387832">Feature record</a> | <a href="/medgen?term=%22Slender%20finger%22%5BClinical%20Features%5D%20OR%20387832%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1762829"><div><strong>Abnormal foot morphology</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1762829</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5399834</a></dd><dt><span class="dotprefix"></span></dt><dd>Anatomical Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">An abnormality of the skeleton of foot.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1762829">Feature record</a> | <a href="/medgen?term=%22Abnormal%20foot%20morphology%22%5BClinical%20Features%5D%20OR%201762829%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1806755"><div><strong>Decreased body weight</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1806755</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5574742</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Abnormally low body weight.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1806755">Feature record</a> | <a href="/medgen?term=%22Decreased%20body%20weight%22%5BClinical%20Features%5D%20OR%201806755%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_41440"><div><strong>Dysphagia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>41440</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0011168</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Difficulty in swallowing.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/41440">Feature record</a> | <a href="/medgen?term=%22Dysphagia%22%5BClinical%20Features%5D%20OR%2041440%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_488785"><div><strong>Macrotia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>488785</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0152421</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Median longitudinal ear length greater than two standard deviations above the mean and median ear width greater than two standard deviations above the mean (objective); or, apparent increase in length and width of the pinna (subjective).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/488785">Feature record</a> | <a href="/medgen?term=%22Macrotia%22%5BClinical%20Features%5D%20OR%20488785%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_849"><div><strong>Cerebellar ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>849</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0007758</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/849">Feature record</a> | <a href="/medgen?term=%22Cerebellar%20ataxia%22%5BClinical%20Features%5D%20OR%20849%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_6476"><div><strong>Mutism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>6476</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0026884</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Complete lack of speech or verbal communication in a person despite attempts to engage in conversation. Mutism as a phenomena assumes the individual has previous capacity for speech and in the pediatric population it assumes that the person is past the age of typical language development.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/6476">Feature record</a> | <a href="/medgen?term=%22Mutism%22%5BClinical%20Features%5D%20OR%206476%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_20693"><div><strong>Seizure</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>20693</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0036572</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/20693">Feature record</a> | <a href="/medgen?term=%22Seizure%22%5BClinical%20Features%5D%20OR%2020693%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_48638"><div><strong>Intellectual disability, severe</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>48638</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0036857</a></dd><dt><span class="dotprefix"></span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Severe mental retardation is defined as an intelligence quotient (IQ) in the range of 20-34.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/48638">Feature record</a> | <a href="/medgen?term=%22Intellectual%20disability%2C%20severe%22%5BClinical%20Features%5D%20OR%2048638%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_52372"><div><strong>Sleep abnormality</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>52372</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0037317</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An abnormal pattern in the quality, quantity, or characteristics of sleep.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/52372">Feature record</a> | <a href="/medgen?term=%22Sleep%20abnormality%22%5BClinical%20Features%5D%20OR%2052372%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_96535"><div><strong>Truncal ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96535</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0427190</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">Truncal ataxia is a sign of ataxia characterized by instability of the trunk. It usually occurs during sitting.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96535">Feature record</a> | <a href="/medgen?term=%22Truncal%20ataxia%22%5BClinical%20Features%5D%20OR%2096535%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_196624"><div><strong>Cerebellar atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>196624</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0740279</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebellar atrophy is defined as a cerebellum with initially normal structures, in a posterior fossa with normal size, which displays enlarged fissures (interfolial spaces) in comparison to the foliae secondary to loss of tissue. Cerebellar atrophy implies irreversible loss of tissue and result from an ongoing progressive disease until a final stage is reached or a single injury, e.g. an intoxication or infectious event.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/196624">Feature record</a> | <a href="/medgen?term=%22Cerebellar%20atrophy%22%5BClinical%20Features%5D%20OR%20196624%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_335345"><div><strong>Photosensitive tonic-clonic seizure</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335345</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846131</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Generalized-onset tonic-clonic seizures that are provoked by flashing or flickering light.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335345">Feature record</a> | <a href="/medgen?term=%22Photosensitive%20tonic-clonic%20seizure%22%5BClinical%20Features%5D%20OR%20335345%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_335347"><div><strong>Loss of ability to walk in first decade</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335347</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846133</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/335347">Feature record</a> | <a href="/medgen?term=%22Loss%20of%20ability%20to%20walk%20in%20first%20decade%22%5BClinical%20Features%5D%20OR%20335347%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_337397"><div><strong>Intellectual disability, progressive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337397</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846149</a></dd><dt><span class="dotprefix"></span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">The term progressive intellectual disability should be used if intelligence decreases/deteriorates over time.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337397">Feature record</a> | <a href="/medgen?term=%22Intellectual%20disability%2C%20progressive%22%5BClinical%20Features%5D%20OR%20337397%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_342515"><div><strong>Neuronal loss in central nervous system</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342515</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850496</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342515">Feature record</a> | <a href="/medgen?term=%22Neuronal%20loss%20in%20central%20nervous%20system%22%5BClinical%20Features%5D%20OR%20342515%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_340737"><div><strong>Absent speech</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340737</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854882</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Complete lack of development of speech and language abilities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340737">Feature record</a> | <a href="/medgen?term=%22Absent%20speech%22%5BClinical%20Features%5D%20OR%20340737%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_344654"><div><strong>Happy demeanor</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344654</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1856115</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A conspicuously happy disposition, characterized by frequent smiling and laughing, which may be contextually inappropriate or unrelated to the situation.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344654">Feature record</a> | <a href="/medgen?term=%22Happy%20demeanor%22%5BClinical%20Features%5D%20OR%20344654%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_766364"><div><strong>Profound global developmental delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766364</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553450</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A profound delay in the achievement of motor or mental milestones in the domains of development of a child.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766364">Feature record</a> | <a href="/medgen?term=%22Profound%20global%20developmental%20delay%22%5BClinical%20Features%5D%20OR%20766364%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_854367"><div><strong>Hyperkinetic movements</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>854367</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3887506</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Motor hyperactivity with excessive movement of muscles of the body as a whole.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/854367">Feature record</a> | <a href="/medgen?term=%22Hyperkinetic%20movements%22%5BClinical%20Features%5D%20OR%20854367%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_869073"><div><strong>Interictal epileptiform activity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>869073</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4023491</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Epileptiform activity refers to distinctive EEG waves or complexes distinguished from background activity found in in a proportion of human subjects with epilepsy, but which can also be found in subjects without seizures. Interictal epileptiform activity refers to such activity that occurs in the absence of a clinical or subclinical seizure.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/869073">Feature record</a> | <a href="/medgen?term=%22Interictal%20epileptiform%20activity%22%5BClinical%20Features%5D%20OR%20869073%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_10133"><div><strong>Hypotonia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>10133</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0026827</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/10133">Feature record</a> | <a href="/medgen?term=%22Hypotonia%22%5BClinical%20Features%5D%20OR%2010133%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_83069"><div><strong>Flexion contracture</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>83069</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0333068</a></dd><dt><span class="dotprefix"></span></dt><dd>Anatomical Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">A flexion contracture is a bent (flexed) joint that cannot be straightened actively or passively. It is thus a chronic loss of joint motion due to structural changes in muscle, tendons, ligaments, or skin that prevents normal movement of joints.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/83069">Feature record</a> | <a href="/medgen?term=%22Flexion%20contracture%22%5BClinical%20Features%5D%20OR%2083069%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_96528"><div><strong>Narrow chest</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>96528</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0426790</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Reduced width of the chest from side to side, associated with a reduced distance from the sternal notch to the tip of the shoulder.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/96528">Feature record</a> | <a href="/medgen?term=%22Narrow%20chest%22%5BClinical%20Features%5D%20OR%2096528%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_892680"><div><strong>Muscular atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>892680</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0541794</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">The presence of skeletal muscular atrophy (which is also known as amyotrophy).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/892680">Feature record</a> | <a href="/medgen?term=%22Muscular%20atrophy%22%5BClinical%20Features%5D%20OR%20892680%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_346841"><div><strong>Generalized hypotonia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>346841</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1858120</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Generalized muscular hypotonia (abnormally low muscle tone).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/346841">Feature record</a> | <a href="/medgen?term=%22Generalized%20hypotonia%22%5BClinical%20Features%5D%20OR%20346841%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1644158"><div><strong>Microcephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1644158</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551563</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Head circumference below 2 standard deviations below the mean for age and gender.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1644158">Feature record</a> | <a href="/medgen?term=%22Microcephaly%22%5BClinical%20Features%5D%20OR%201644158%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_8484"><div><strong>Drooling</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>8484</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0013132</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Habitual flow of saliva out of the mouth.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/8484">Feature record</a> | <a href="/medgen?term=%22Drooling%22%5BClinical%20Features%5D%20OR%208484%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_116104"><div><strong>Open mouth</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>116104</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0240379</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A facial appearance characterized by a permanently or nearly permanently opened mouth.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/116104">Feature record</a> | <a href="/medgen?term=%22Open%20mouth%22%5BClinical%20Features%5D%20OR%20116104%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_98316"><div><strong>Mandibular prognathia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>98316</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0399526</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Abnormal prominence of the chin related to increased length of the mandible.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/98316">Feature record</a> | <a href="/medgen?term=%22Mandibular%20prognathia%22%5BClinical%20Features%5D%20OR%2098316%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_324419"><div><strong>Long face</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324419</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836047</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Facial height (length) is more than 2 standard deviations above the mean (objective); or, an apparent increase in the height (length) of the face (subjective).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/324419">Feature record</a> | <a href="/medgen?term=%22Long%20face%22%5BClinical%20Features%5D%20OR%20324419%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_373334"><div><strong>Narrow face</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>373334</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837463</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Bizygomatic (upper face) and bigonial (lower face) width are both more than 2 standard deviations below the mean (objective); or, an apparent reduction in the width of the upper and lower face (subjective).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/373334">Feature record</a> | <a href="/medgen?term=%22Narrow%20face%22%5BClinical%20Features%5D%20OR%20373334%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_326583"><div><strong>Long nose</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>326583</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839798</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Distance from nasion to subnasale more than two standard deviations above the mean, or alternatively, an apparently increased length from the nasal root to the nasal base.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/326583">Feature record</a> | <a href="/medgen?term=%22Long%20nose%22%5BClinical%20Features%5D%20OR%20326583%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_377914"><div><strong>Thick eyebrow</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>377914</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1853487</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Increased density/number and/or increased diameter of eyebrow hairs.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/377914">Feature record</a> | <a href="/medgen?term=%22Thick%20eyebrow%22%5BClinical%20Features%5D%20OR%20377914%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_45205"><div><strong>Ophthalmoplegia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>45205</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0029089</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">Paralysis of one or more extraocular muscles that are responsible for eye movements.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/45205">Feature record</a> | <a href="/medgen?term=%22Ophthalmoplegia%22%5BClinical%20Features%5D%20OR%2045205%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_21337"><div><strong>Strabismus</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>21337</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0038379</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A misalignment of the eyes so that the visual axes deviate from bifoveal fixation. The classification of strabismus may be based on a number of features including the relative position of the eyes, whether the deviation is latent or manifest, intermittent or constant, concomitant or otherwise and according to the age of onset and the relevance of any associated refractive error.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/21337">Feature record</a> | <a href="/medgen?term=%22Strabismus%22%5BClinical%20Features%5D%20OR%2021337%5Buid%5D">Search on this feature</a></div></div><div class="TreeLite" data-jigconfig="closed: 1"><div class="concept-def"><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().openAll(); return false;">Show all</a><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().closeAll(); return false;">Hide all</a></div><ul><li><span class="TLline">Abnormality of head or neck</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_8484" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Drooling</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_324419" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Long face</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_326583" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Long nose</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_98316" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mandibular prognathia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_373334" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Narrow face</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_116104" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Open mouth</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_377914" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Thick eyebrow</a></span></li></ul></li><li><span class="TLline">Abnormality of limbs</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1762829" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Abnormal foot morphology</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_387832" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Slender finger</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_98140" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Thumbs, congenital Clasped</a></span></li></ul></li><li><span class="TLline">Abnormality of the digestive system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_41440" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Dysphagia</a></span></li></ul></li><li><span class="TLline">Abnormality of the eye</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_45205" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ophthalmoplegia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_21337" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Strabismus</a></span></li></ul></li><li><span class="TLline">Abnormality of the musculoskeletal system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_83069" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Flexion contracture</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_346841" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Generalized hypotonia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_10133" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypotonia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1644158" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_892680" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular atrophy</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_96528" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Narrow chest</a></span></li></ul></li><li><span class="TLline">Abnormality of the nervous system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_340737" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Absent speech</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_849" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar ataxia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_196624" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar atrophy</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_344654" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Happy demeanor</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_854367" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperkinetic movements</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_337397" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, progressive</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_48638" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, severe</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_869073" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Interictal epileptiform activity</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_335347" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Loss of ability to walk in first decade</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_6476" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mutism</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_342515" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronal loss in central nervous system</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_335345" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Photosensitive tonic-clonic seizure</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_766364" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Profound global developmental delay</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_20693" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Seizure</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_52372" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sleep abnormality</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_96535" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Truncal ataxia</a></span></li></ul></li><li><span class="TLline">Constitutional symptom</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_41977" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bowel incontinence</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_22579" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Urinary incontinence</a></span></li></ul></li><li><span class="TLline">Ear malformation</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_488785" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Macrotia</a></span></li></ul></li><li><span class="TLline">Growth abnormality</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1806755" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Decreased body weight</a></span></li></ul></li></ul></div></div>
</div>
<div class="portlet mgSection" id="ID_118">
<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=C2678194[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=394455">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=394455" target="_blank" href="/omim/300231">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK475801/" ref="ncbi_uid=394455">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=394455" ref="ncbi_uid=394455">V</a></span></span><span class="TLline">Christianson syndrome</span></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/1842633" ref="tree=MeSH" title="MedGen record for Cerebral malformation with epilepsy">Cerebral malformation with epilepsy</a></span><ul><li><span class="matched_ds">Christianson syndrome</span></li></ul></li></ul></div></div></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/25634039">Metformin use in patients undergoing in vitro fertilization treatment: results of a worldwide web-based survey.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Christianson MS,
Wu H,
Zhao Y,
Yemini M,
Leong M,
Shoham Z</span><br />
<span class="medgenPMjournal">J Assist Reprod Genet</span>
2015 Mar;32(3):401-6.
Epub 2015 Jan 30
doi: 10.1007/s10815-014-0414-x.
<span class="bold">PMID: </span><a href="/pubmed/25634039" target="_blank">25634039</a><a href="/pmc/articles/PMC4363229" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/17849242">Dextromethorphan poisoning: an evidence-based consensus guideline for out-of-hospital management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Chyka PA,
Erdman AR,
Manoguerra AS,
Christianson G,
Booze LL,
Nelson LS,
Woolf AD,
Cobaugh DJ,
Caravati EM,
Scharman EJ,
Troutman WG;
American Assiciation of Poison Control Centers</span><br />
<span class="medgenPMjournal">Clin Toxicol (Phila)</span>
2007 Sep;45(6):662-77.
doi: 10.1080/15563650701606443.
<span class="bold">PMID: </span><a href="/pubmed/17849242" target="_blank">17849242</a></div>
<div class="nl"><a target="_blank" href="/pubmed/17486478">Selective serotonin reuptake inhibitor poisoning: An evidence-based consensus guideline for out-of-hospital management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nelson LS,
Erdman AR,
Booze LL,
Cobaugh DJ,
Chyka PA,
Woolf AD,
Scharman EJ,
Wax PM,
Manoguerra AS,
Christianson G,
Caravati EM,
Troutman WG</span><br />
<span class="medgenPMjournal">Clin Toxicol (Phila)</span>
2007 May;45(4):315-32.
doi: 10.1080/15563650701285289.
<span class="bold">PMID: </span><a href="/pubmed/17486478" target="_blank">17486478</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(christianson%20syndrome)%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 (3)</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/39237363">Christianson syndrome across the lifespan: genetic mutations and longitudinal study in children, adolescents, and adults.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kavanaugh BC,
Elacio J,
Best CR,
St Pierre DG,
Pescosolido MF,
Ouyang Q,
Biedermann J,
Bradley RS,
Liu JS,
Jones RN,
Morrow EM</span><br />
<span class="medgenPMjournal">J Med Genet</span>
2024 Oct 23;61(11):1031-1039.
doi: 10.1136/jmg-2024-109973.
<span class="bold">PMID: </span><a href="/pubmed/39237363" target="_blank">39237363</a><a href="/pmc/articles/PMC11503119" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/32737755">Endosomal Acid-Base Homeostasis in Neurodegenerative Diseases.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Prasad H,
Rao R</span><br />
<span class="medgenPMjournal">Rev Physiol Biochem Pharmacol</span>
2023;185:195-231.
doi: 10.1007/112_2020_25.
<span class="bold">PMID: </span><a href="/pubmed/32737755" target="_blank">32737755</a><a href="/pmc/articles/PMC7614123" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/32569089">Loss of SLC9A6/NHE6 impairs nociception in a mouse model of Christianson syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Petitjean H,
Fatima T,
Mouchbahani-Constance S,
Davidova A,
Ferland CE,
Orlowski J,
Sharif-Naeini R</span><br />
<span class="medgenPMjournal">Pain</span>
2020 Nov;161(11):2619-2628.
doi: 10.1097/j.pain.0000000000001961.
<span class="bold">PMID: </span><a href="/pubmed/32569089" target="_blank">32569089</a><a href="/pmc/articles/PMC7566297" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29946028">Amyloid clearance defect in ApoE4 astrocytes is reversed by epigenetic correction of endosomal pH.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Prasad H,
Rao R</span><br />
<span class="medgenPMjournal">Proc Natl Acad Sci U S A</span>
2018 Jul 10;115(28):E6640-E6649.
Epub 2018 Jun 26
doi: 10.1073/pnas.1801612115.
<span class="bold">PMID: </span><a href="/pubmed/29946028" target="_blank">29946028</a><a href="/pmc/articles/PMC6048470" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24839169">Genetic disorders associated with postnatal microcephaly.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Seltzer LE,
Paciorkowski AR</span><br />
<span class="medgenPMjournal">Am J Med Genet C Semin Med Genet</span>
2014 Jun;166C(2):140-55.
Epub 2014 May 16
doi: 10.1002/ajmg.c.31400.
<span class="bold">PMID: </span><a href="/pubmed/24839169" target="_blank">24839169</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Christianson%20syndrome%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 (5)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/34883399">Sleep and daytime behavior in individuals with Christianson Syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gruber R,
Scholes S,
Bertone A,
McKinney RA,
Orlowski J,
Wise MS</span><br />
<span class="medgenPMjournal">Sleep Med</span>
2022 Jan;89:55-59.
Epub 2021 Nov 20
doi: 10.1016/j.sleep.2021.11.007.
<span class="bold">PMID: </span><a href="/pubmed/34883399" target="_blank">34883399</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34791706">Christianson syndrome: A novel splicing variant of SLC9A6 causes exon skipping in a Chinese boy and a literature review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zhang X,
Wu X,
Liu H,
Song T,
Jiang Y,
He H,
Yang S,
Xie Y</span><br />
<span class="medgenPMjournal">J Clin Lab Anal</span>
2022 Jan;36(1):e24123.
Epub 2021 Nov 17
doi: 10.1002/jcla.24123.
<span class="bold">PMID: </span><a href="/pubmed/34791706" target="_blank">34791706</a><a href="/pmc/articles/PMC8761434" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25044251">Genetic and phenotypic diversity of NHE6 mutations in Christianson syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Pescosolido MF,
Stein DM,
Schmidt M,
El Achkar CM,
Sabbagh M,
Rogg JM,
Tantravahi U,
McLean RL,
Liu JS,
Poduri A,
Morrow EM</span><br />
<span class="medgenPMjournal">Ann Neurol</span>
2014 Oct;76(4):581-93.
Epub 2014 Sep 19
doi: 10.1002/ana.24225.
<span class="bold">PMID: </span><a href="/pubmed/25044251" target="_blank">25044251</a><a href="/pmc/articles/PMC4304796" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24839169">Genetic disorders associated with postnatal microcephaly.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Seltzer LE,
Paciorkowski AR</span><br />
<span class="medgenPMjournal">Am J Med Genet C Semin Med Genet</span>
2014 Jun;166C(2):140-55.
Epub 2014 May 16
doi: 10.1002/ajmg.c.31400.
<span class="bold">PMID: </span><a href="/pubmed/24839169" target="_blank">24839169</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24779060">If not Angelman, what is it? A review of Angelman-like syndromes.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Tan WH,
Bird LM,
Thibert RL,
Williams CA</span><br />
<span class="medgenPMjournal">Am J Med Genet A</span>
2014 Apr;164A(4):975-92.
doi: 10.1002/ajmg.a.36416.
<span class="bold">PMID: </span><a href="/pubmed/24779060" target="_blank">24779060</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Christianson%20syndrome%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 (18)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/26421989">Successful Treatment of Electrographic Status Epilepticus of Sleep With Felbamate in a Patient With SLC9A6 Mutation.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Coorg R,
Weisenberg JL</span><br />
<span class="medgenPMjournal">Pediatr Neurol</span>
2015 Dec;53(6):527-31.
Epub 2015 Jul 22
doi: 10.1016/j.pediatrneurol.2015.07.007.
<span class="bold">PMID: </span><a href="/pubmed/26421989" target="_blank">26421989</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Christianson%20syndrome%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 (1)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/37795931">Genetic and sporadic forms of tauopathies-TAU as a disease driver for the majority of patients but the minority of tauopathies.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zempel H</span><br />
<span class="medgenPMjournal">Cytoskeleton (Hoboken)</span>
2024 Jan;81(1):66-70.
Epub 2023 Oct 5
doi: 10.1002/cm.21793.
<span class="bold">PMID: </span><a href="/pubmed/37795931" target="_blank">37795931</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31583675">Xq26 duplications lead to undergrowth or overgrowth via competing pathways including GPC3/GPC4.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Karna GK,
Myers KA</span><br />
<span class="medgenPMjournal">Ann Hum Genet</span>
2020 Mar;84(2):201-204.
Epub 2019 Oct 3
doi: 10.1111/ahg.12357.
<span class="bold">PMID: </span><a href="/pubmed/31583675" target="_blank">31583675</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29946028">Amyloid clearance defect in ApoE4 astrocytes is reversed by epigenetic correction of endosomal pH.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Prasad H,
Rao R</span><br />
<span class="medgenPMjournal">Proc Natl Acad Sci U S A</span>
2018 Jul 10;115(28):E6640-E6649.
Epub 2018 Jun 26
doi: 10.1073/pnas.1801612115.
<span class="bold">PMID: </span><a href="/pubmed/29946028" target="_blank">29946028</a><a href="/pmc/articles/PMC6048470" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27590723">A Christianson syndrome-linked deletion mutation (∆(287)ES(288)) in SLC9A6 disrupts recycling endosomal function and elicits neurodegeneration and cell death.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ilie A,
Gao AY,
Reid J,
Boucher A,
McEwan C,
Barrière H,
Lukacs GL,
McKinney RA,
Orlowski J</span><br />
<span class="medgenPMjournal">Mol Neurodegener</span>
2016 Sep 2;11(1):63.
doi: 10.1186/s13024-016-0129-9.
<span class="bold">PMID: </span><a href="/pubmed/27590723" target="_blank">27590723</a><a href="/pmc/articles/PMC5010692" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/20949524">Natural history of Christianson syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Schroer RJ,
Holden KR,
Tarpey PS,
Matheus MG,
Griesemer DA,
Friez MJ,
Fan JZ,
Simensen RJ,
Strømme P,
Stevenson RE,
Stratton MR,
Schwartz CE</span><br />
<span class="medgenPMjournal">Am J Med Genet A</span>
2010 Nov;152A(11):2775-83.
doi: 10.1002/ajmg.a.33093.
<span class="bold">PMID: </span><a href="/pubmed/20949524" target="_blank">20949524</a><a href="/pmc/articles/PMC3698558" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Christianson%20syndrome%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 (5)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/34883399">Sleep and daytime behavior in individuals with Christianson Syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Gruber R,
Scholes S,
Bertone A,
McKinney RA,
Orlowski J,
Wise MS</span><br />
<span class="medgenPMjournal">Sleep Med</span>
2022 Jan;89:55-59.
Epub 2021 Nov 20
doi: 10.1016/j.sleep.2021.11.007.
<span class="bold">PMID: </span><a href="/pubmed/34883399" target="_blank">34883399</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30296617">A potential gain-of-function variant of SLC9A6 leads to endosomal alkalinization and neuronal atrophy associated with Christianson Syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ilie A,
Gao AYL,
Boucher A,
Park J,
Berghuis AM,
Hoffer MJV,
Hilhorst-Hofstee Y,
McKinney RA,
Orlowski J</span><br />
<span class="medgenPMjournal">Neurobiol Dis</span>
2019 Jan;121:187-204.
Epub 2018 Oct 5
doi: 10.1016/j.nbd.2018.10.002.
<span class="bold">PMID: </span><a href="/pubmed/30296617" target="_blank">30296617</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30126759">Electrical status epilepticus in sleep, a constitutive feature of Christianson syndrome?</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Mathieu ML,
de Bellescize J,
Till M,
Flurin V,
Labalme A,
Chatron N,
Sanlaville D,
Chemaly N,
des Portes V,
Ostrowsky K,
Arzimanoglou A,
Lesca G</span><br />
<span class="medgenPMjournal">Eur J Paediatr Neurol</span>
2018 Nov;22(6):1124-1132.
Epub 2018 Jul 21
doi: 10.1016/j.ejpn.2018.07.004.
<span class="bold">PMID: </span><a href="/pubmed/30126759" target="_blank">30126759</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27590723">A Christianson syndrome-linked deletion mutation (∆(287)ES(288)) in SLC9A6 disrupts recycling endosomal function and elicits neurodegeneration and cell death.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ilie A,
Gao AY,
Reid J,
Boucher A,
McEwan C,
Barrière H,
Lukacs GL,
McKinney RA,
Orlowski J</span><br />
<span class="medgenPMjournal">Mol Neurodegener</span>
2016 Sep 2;11(1):63.
doi: 10.1186/s13024-016-0129-9.
<span class="bold">PMID: </span><a href="/pubmed/27590723" target="_blank">27590723</a><a href="/pmc/articles/PMC5010692" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27142213">The expanding phenotypic spectrum of female SLC9A6 mutation carriers: a case series and review of the literature.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Sinajon P,
Verbaan D,
So J</span><br />
<span class="medgenPMjournal">Hum Genet</span>
2016 Aug;135(8):841-50.
Epub 2016 May 3
doi: 10.1007/s00439-016-1675-5.
<span class="bold">PMID: </span><a href="/pubmed/27142213" target="_blank">27142213</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Christianson%20syndrome%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 (7)</a></div></div>
</div>
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<h2 class="offscreen_noflow">Supplemental Content</h2>
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<div class="portlet mgSection" id="ID_113">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Table_of_contents">Table of contents</h1><a sid="113" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul id="my-toc"></ul></div>
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<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C2678194%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (40)</a></li>
<li><a href="/gtr/tests?term=C2678194%5bDISCUI%5d&amp;filter=method%3A2%5F9" target="_blank">Sequence analysis of select exons (1)</a></li>
<li><a href="/gtr/tests?term=C2678194%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (55)</a></li>
<li><a href="/gtr/tests?term=C2678194%5bDISCUI%5d&amp;filter=method%3A2%5F19" target="_blank">Targeted variant analysis (10)</a></li>
<li class="portletSeeAll portletSeeAllPad"><total><a href="/gtr/tests?term=C2678194%5bDISCUI%5d" target="_blank">See all (59)</a></total></li>
</ul></div>
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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="https://www.omim.org/search?index=entry&amp;start=1&amp;limit=10&amp;sort=score%20desc&amp;field=number&amp;search=300243" target="_blank">OMIM</a></li><li><a href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Expert=85278" target="_blank">Orphanet</a></li><li><a href="https://clinicaltrials.gov/search?cond=Christianson%20syndrome" 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=(christianson%20syndrome)%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></ul></div>
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<div class="portlet_content ln"><ul><li><a href="http://www.diseaseinfosearch.org/Christianson+Syndrome/1400" target="_blank">Genetic Alliance</a></li><li><a href="https://www.malacards.org/card/intellectual_developmental_disorder_x_linked_syndromic_christianson_type" target="_blank">MalaCards</a></li><li><a href="https://vsearch.nlm.nih.gov/vivisimo/cgi-bin/query-meta?v:project=medlineplus&amp;query=Christianson%20syndrome" target="_blank">MedlinePlus</a></li><li><a href="https://medlineplus.gov/genetics/condition/christianson-syndrome" target="_blank">MedlinePlusGenetics (GHR)</a></li><li><a href="https://rarediseases.info.nih.gov/diseases/10572/disease" target="_blank">NCATS Office of Rare Diseases Research (GARD)</a></li></ul></div>
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