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<meta name="keywords" content="C1836824, amish infantile epilepsy syndrome, disease or syndrome, disorder of lactosylceramide alpha-2,3-sialyltransferase activity, epilepsy syndrome, infantile-onset symptomatic, ganglioside gm3 synthase deficiency, gm3 synthase deficiency, infantile-onset symptomatic epilepsy syndrome, infantile-onset symptomatic epilepsy syndrome - developmental stagnation - blindness, infantile-onset symptomatic epilepsy syndrome-developmental stagnation-blindness syndrome, lactosylceramide alpha-2,3-sialyltransferase activity disease, salt & pepper syndrome, salt and pepper developmental regression syndrome, salt and pepper mental retardation syndrome, salt and pepper syndrome, salt-and-pepper syndrome, spdrs, st3gal5, st3gal5-cdg, 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="Early clinical features of GM3 synthase deficiency include infantile onset of severe irritability with feeding difficulties, early and intractable seizures, growth failure with acquired microcephaly, sensorineural hearing impairment, hypotonia, and poor visual function. Over time, affected individuals experience severe-to-profound developmental delay and intellectual disability, can develop dystonia with hyperkinetic movements, and may develop pigmentary skin changes of the hands and feet. Affected individuals often have frequent ear infections and pneumonia without evidence of immune dysfunction." /><meta name="robots" content="index,nofollow,noarchive" />
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<!--
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UID=323005
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ConceptID=C1836824
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-->
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<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">GM3 synthase deficiency<span class="h1sub">(SPDRS)</span></div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>323005</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information."><span class="highlight" style="background-color:">C1836824</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>Salt and pepper developmental regression syndrome; SALT AND PEPPER MENTAL RETARDATION SYNDROME; Salt and pepper syndrome; SPDRS</td></tr>
|
||
<tr><td><span class="bold">SNOMED CT: </span></td>
|
||
<td>GM3 synthase deficiency (722762005); Ganglioside GM3 synthase deficiency (722762005); Amish infantile epilepsy syndrome (722762005); Infantile-onset symptomatic epilepsy syndrome (722762005)</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="ST3GAL5 - ID: 8869 - NCBI Gene" href="/gene/8869" class="medgenPMinfo">ST3GAL5</a> (2p11.2)</td></tr>
|
||
<tr><td colspan="2" class="small"> </td></tr><tr><td>Monarch Initiative:</td>
|
||
<td><a href="https://monarchinitiative.org/disease/MONDO:0018274" target="_blank">MONDO:0018274</a></td></tr>
|
||
<tr><td>OMIM<span class="superscript">®</span>:</td>
|
||
<td><a href="https://omim.org/entry/609056" target="_blank">609056</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&Expert=370933">ORPHA370933</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>
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<div class="portlet mgSection" id="ID_101">
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<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/NBK593237" target="_blank">GM3 Synthase Deficiency</a></div><div>Early clinical features of GM3 synthase deficiency include infantile onset of severe irritability with feeding difficulties, early and intractable seizures, growth failure with acquired microcephaly, sensorineural hearing impairment, hypotonia, and poor visual function. Over time, affected individuals experience severe-to-profound developmental delay and intellectual disability, can develop dystonia with hyperkinetic movements, and may develop pigmentary skin changes of the hands and feet. Affected individuals often have frequent ear infections and pneumonia without evidence of immune dysfunction. [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/NBK593237#gm3-def.Summary" target="NBK593237">Summary</a> | <a class="medgenPMinfo" href="/books/NBK593237#gm3-def.Diagnosis" target="NBK593237">Diagnosis</a> | <a class="medgenPMinfo" href="/books/NBK593237#gm3-def.Clinical_Characteristics" target="NBK593237">Clinical Characteristics</a> | <a class="medgenPMinfo" href="/books/NBK593237#gm3-def.Genetically_Related_Allelic_Diso" target="NBK593237">Genetically Related (Allelic) Disorders</a> | <a class="medgenPMinfo" href="/books/NBK593237#gm3-def.Differential_Diagnosis" target="NBK593237">Differential Diagnosis</a> | <a class="medgenPMinfo" href="/books/NBK593237#gm3-def.Management" target="NBK593237">Management</a> | <a class="medgenPMinfo" href="/books/NBK593237#gm3-def.Genetic_Counseling" target="NBK593237">Genetic Counseling</a> | <a class="medgenPMinfo" href="/books/NBK593237#gm3-def.Resources" target="NBK593237">Resources</a> | <a class="medgenPMinfo" href="/books/NBK593237#gm3-def.Molecular_Genetics" target="NBK593237">Molecular Genetics</a> | <a class="medgenPMinfo" href="/books/NBK593237#gm3-def.Chapter_Notes" target="NBK593237">Chapter Notes</a> | <a class="medgenPMinfo" href="/books/NBK593237#gm3-def.References" target="NBK593237">References</a></div><div class="spaceAbove"><strong>Authors:</strong><br />
|
||
Vincent Cruz | Baozhong Xin | Heng Wang <a href="/books/NBK593237" target="NBK593237" title="NCBI Bookshelf: GM3 Synthase Deficiency">view full author information</a></div></div>
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||
</div>
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||
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||
<div class="portlet mgSection" id="ID_117">
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||
<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 />Salt and pepper developmental regression syndrome, also known as Amish infantile epilepsy syndrome, is an autosomal recessive neurocutaneous disorder characterized by infantile onset of refractory and recurrent seizures associated with profoundly delayed psychomotor development and/or developmental regression as well as abnormal movements and visual loss (summary by Fragaki et al., 2013). Affected individuals develop hypo- or hyperpigmented skin macules on the trunk, face, and extremities in early childhood (summary by Boccuto et al., 2014). Not all patients have overt seizures (Lee et al., 2016). <a target="_blank" href="http://www.omim.org/entry/609056">http://www.omim.org/entry/609056</a></div><div class="mgSection"><strong>From MedlinePlus Genetics</strong><br />GM3 synthase deficiency is characterized by recurrent seizures (epilepsy) and problems with brain development. Within the first few weeks after birth, affected infants become irritable and develop feeding difficulties and vomiting that prevent them from growing and gaining weight at the usual rate. Seizures begin within the first year of life and worsen over time. Multiple types of seizures are possible, including generalized tonic-clonic seizures (also known as grand mal seizures), which cause muscle rigidity, convulsions, and loss of consciousness. Some affected children also experience prolonged episodes of seizure activity called nonconvulsive status epilepticus. The seizures associated with GM3 synthase deficiency tend to be resistant (refractory) to treatment with antiseizure medications.<br /><br />GM3 synthase deficiency profoundly disrupts brain development. Most affected children have severe intellectual disability and do not develop skills such as reaching for objects, speaking, sitting without support, or walking. Some have involuntary twisting or jerking movements of the arms that are described as choreoathetoid. Although affected infants can likely see and hear at birth, vision and hearing become impaired as the disease worsens. It is unknown how long people with GM3 synthase deficiency usually survive.<br /><br />Some affected individuals have changes in skin coloring (pigmentation), including dark freckle-like spots on the arms and legs and light patches on the arms, legs, and face. These changes appear in childhood and may become more or less apparent over time. The skin changes do not cause any symptoms, but they can help doctors diagnose GM3 synthase deficiency in children who also have seizures and delayed development. <a target="_blank" href="https://medlineplus.gov/genetics/condition/gm3-synthase-deficiency">https://medlineplus.gov/genetics/condition/gm3-synthase-deficiency</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_323007"><div><strong>Hyporeflexia of upper limbs</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>323007</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C1836835</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Reduced intensity of muscle tendon reflexes in the upper limbs. Reflexes are elicited by stretching the tendon of a muscle, e.g., by tapping.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/323007">Feature record</a> | <a href="/medgen?term=%22Hyporeflexia%20of%20upper%20limbs%22%5BClinical%20Features%5D%20OR%20323007%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_746019"><div><strong>Failure to thrive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>746019</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C2315100</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/746019">Feature record</a> | <a href="/medgen?term=%22Failure%20to%20thrive%22%5BClinical%20Features%5D%20OR%20746019%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_12124"><div><strong>Vomiting</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>12124</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C0042963</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Forceful ejection of the contents of the stomach through the mouth by means of a series of involuntary spasmic contractions.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/12124">Feature record</a> | <a href="/medgen?term=%22Vomiting%22%5BClinical%20Features%5D%20OR%2012124%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_436211"><div><strong>Feeding difficulties in infancy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436211</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C2674608</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Impaired feeding performance of an infant as manifested by difficulties such as weak and ineffective sucking, brief bursts of sucking, and falling asleep during sucking. There may be difficulties with chewing or maintaining attention.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/436211">Feature record</a> | <a href="/medgen?term=%22Feeding%20difficulties%20in%20infancy%22%5BClinical%20Features%5D%20OR%20436211%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_235586"><div><strong>Hearing impairment</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>235586</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C1384666</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
|
||
<div class="spaceAbove">A decreased magnitude of the sensory perception of sound.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/235586">Feature record</a> | <a href="/medgen?term=%22Hearing%20impairment%22%5BClinical%20Features%5D%20OR%20235586%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_10234"><div><strong>Myoclonus</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>10234</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C0027066</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Very brief, involuntary random muscular contractions occurring at rest, in response to sensory stimuli, or accompanying voluntary movements.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/10234">Feature record</a> | <a href="/medgen?term=%22Myoclonus%22%5BClinical%20Features%5D%20OR%2010234%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_11586"><div><strong>Status epilepticus</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>11586</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C0038220</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Status epilepticus is a type of prolonged seizure resulting either from the failure of the mechanisms responsible for seizure termination or from the initiation of mechanisms which lead to abnormally prolonged seizures (after time point t1). It is a condition that can have long-term consequences (after time point t2), including neuronal death, neuronal injury, and alteration of neuronal networks, depending on the type and duration of seizures.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/11586">Feature record</a> | <a href="/medgen?term=%22Status%20epilepticus%22%5BClinical%20Features%5D%20OR%2011586%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_39313"><div><strong>Choreoathetosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>39313</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C0085583</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Involuntary movements characterized by both athetosis (inability to sustain muscles in a fixed position) and chorea (widespread jerky arrhythmic movements).</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/39313">Feature record</a> | <a href="/medgen?term=%22Choreoathetosis%22%5BClinical%20Features%5D%20OR%2039313%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_66840"><div><strong>Global brain atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>66840</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C0241816</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Pathologic Function</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Unlocalized atrophy of the brain with decreased total brain matter volume and increased ventricular size.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/66840">Feature record</a> | <a href="/medgen?term=%22Global%20brain%20atrophy%22%5BClinical%20Features%5D%20OR%2066840%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_141670"><div><strong>Bilateral tonic-clonic seizure</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>141670</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C0494475</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
|
||
<div class="spaceAbove">A bilateral tonic-clonic seizure is a seizure defined by a tonic (bilateral increased tone, lasting seconds to minutes) and then a clonic (bilateral sustained rhythmic jerking) phase.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/141670">Feature record</a> | <a href="/medgen?term=%22Bilateral%20tonic-clonic%20seizure%22%5BClinical%20Features%5D%20OR%20141670%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_107838"><div><strong>Global developmental delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>107838</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C0557874</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
|
||
<div class="spaceAbove">A delay in the achievement of motor or mental milestones in the domains of development of a child, including motor skills, speech and language, cognitive skills, and social and emotional skills. This term should only be used to describe children younger than five years of age.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/107838">Feature record</a> | <a href="/medgen?term=%22Global%20developmental%20delay%22%5BClinical%20Features%5D%20OR%20107838%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_322973"><div><strong>Lower limb hyperreflexia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>322973</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C1836696</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Increased intensity of the a reflex in the leg.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/322973">Feature record</a> | <a href="/medgen?term=%22Lower%20limb%20hyperreflexia%22%5BClinical%20Features%5D%20OR%20322973%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_324612"><div><strong>Developmental stagnation at onset of seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324612</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C1836829</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
|
||
<div class="spaceAbove">A cessation of the development of a child in the areas of motor skills, speech and language, cognitive skills, and social and/or emotional skills, following the onset of epilepsy.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/324612">Feature record</a> | <a href="/medgen?term=%22Developmental%20stagnation%20at%20onset%20of%20seizures%22%5BClinical%20Features%5D%20OR%20324612%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_324613"><div><strong>Developmental regression</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324613</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C1836830</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Loss of developmental skills, as manifested by loss of developmental milestones.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/324613">Feature record</a> | <a href="/medgen?term=%22Developmental%20regression%22%5BClinical%20Features%5D%20OR%20324613%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) 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_397841"><div><strong>Irritability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>397841</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C2700617</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Mental Process</dd></dl></div></div></div>
|
||
<div class="spaceAbove">A proneness to anger, i.e., a tendency to become easily bothered or annoyed.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen?term=%22Irritability%22%5BClinical%20Features%5D%20OR%20397841%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_866864"><div><strong>Multifocal epileptiform discharges</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>866864</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C4021219</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
|
||
<div class="spaceAbove">An abnormality in cerebral electrical activity recorded along the scalp by electroencephalography (EEG) and being identified at multiple locations (foci).</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/866864">Feature record</a> | <a href="/medgen?term=%22Multifocal%20epileptiform%20discharges%22%5BClinical%20Features%5D%20OR%20866864%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) 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_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) 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_375013"><div><strong>Hypermelanotic macule</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375013</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C1842774</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
|
||
<div class="spaceAbove">A hyperpigmented circumscribed area of change in normal skin color without elevation or depression of any size.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/375013">Feature record</a> | <a href="/medgen?term=%22Hypermelanotic%20macule%22%5BClinical%20Features%5D%20OR%20375013%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_18180"><div><strong>Optic atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>18180</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C0029124</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Atrophy of the optic nerve. Optic atrophy results from the death of the retinal ganglion cell axons that comprise the optic nerve and manifesting as a pale optic nerve on fundoscopy.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/18180">Feature record</a> | <a href="/medgen?term=%22Optic%20atrophy%22%5BClinical%20Features%5D%20OR%2018180%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_784038"><div><strong>Visual loss</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>784038</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C3665386</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Finding</dd></dl></div></div></div>
|
||
<div class="spaceAbove">Loss of visual acuity (implying that vision was better at a certain time point in life). Otherwise the term reduced visual acuity should be used (or a subclass of that).</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/784038">Feature record</a> | <a href="/medgen?term=%22Visual%20loss%22%5BClinical%20Features%5D%20OR%20784038%5Buid%5D">Search on this feature</a></div></div>
|
||
<div class="divPopper rprt" id="clin_890568"><div><strong>Cerebral visual impairment</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>890568</dd><dt><span class="dotprefix"> •</span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS) Click for more information.">C4048268</a></dd><dt><span class="dotprefix"> •</span></dt><dd>Pathologic Function</dd></dl></div></div></div>
|
||
<div class="spaceAbove">A form of loss of vision caused by damage to the visual cortex rather than a defect in the eye.</div>
|
||
<div class="spaceAbove nowrap">See: <a href="/medgen/890568">Feature record</a> | <a href="/medgen?term=%22Cerebral%20visual%20impairment%22%5BClinical%20Features%5D%20OR%20890568%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(".TreeLite","#ID_102").TreeLite().openAll(); return false;">Show all</a><a class="small" href="#" onclick="jQuery(".TreeLite","#ID_102").TreeLite().closeAll(); return false;">Hide all</a></div><ul><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_323007" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyporeflexia of upper limbs</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_436211" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Feeding difficulties in infancy</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_12124" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Vomiting</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_890568" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebral visual impairment</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_18180" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Optic atrophy</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_784038" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Visual loss</a></span></li></ul></li><li><span class="TLline">Abnormality of the integument</span><ul><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_375013" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypermelanotic macule</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_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></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_141670" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bilateral tonic-clonic seizure</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_39313" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Choreoathetosis</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_324613" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental regression</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_324612" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental stagnation at onset of seizures</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_66840" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Global brain atrophy</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_107838" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Global developmental delay</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_397841" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Irritability</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_322973" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lower limb hyperreflexia</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_866864" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Multifocal epileptiform discharges</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_10234" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myoclonus</a></span></li><li class="TLline">
|
||
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_11586" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Status epilepticus</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_235586" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hearing impairment</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_746019" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Failure to thrive</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><li><a href="#tabORDO">Orphanet</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=C1836824[DISCUI]&test_type=Clinical" ref="ncbi_uid=323005">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=323005" target="_blank" href="/omim/604402">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK593237/" ref="ncbi_uid=323005">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&from_uid=323005" ref="ncbi_uid=323005">V</a></span></span><span class="TLline">GM3 synthase deficiency</span></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/1842998" ref="tree=MeSH" title="MedGen record for Congenital disorder of glycosylation with epilepsy as a major feature">Congenital disorder of glycosylation with epilepsy as a major feature</a></span><ul><li><span class="matched_ds">GM3 synthase deficiency</span></li></ul></li></ul></div></div><div id="tabORDO">Follow <a target="_blank" href="http://www.orpha.net/consor/cgi-bin/Disease_Classif.php?lng=EN&data_id=156&PatId=17933&search=Disease_Classif_Simple&new=1" class="ital bold">this link</a> to review classifications for <span class="ital">GM3 synthase deficiency</span> in Orphanet.</div></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/30691927">Recessive GM3 synthase deficiency: Natural history, biochemistry, and therapeutic frontier.</a></div>
|
||
<div class="portlet_content ln"><span class="medgenPMauthor">Bowser LE,
|
||
Young M,
|
||
Wenger OK,
|
||
Ammous Z,
|
||
Brigatti KW,
|
||
Carson VJ,
|
||
Moser T,
|
||
Deline J,
|
||
Aoki K,
|
||
Morlet T,
|
||
Scott EM,
|
||
Puffenberger EG,
|
||
Robinson DL,
|
||
Hendrickson C,
|
||
Salvin J,
|
||
Gottlieb S,
|
||
Heaps AD,
|
||
Tiemeyer M,
|
||
Strauss KA</span><br />
|
||
<span class="medgenPMjournal">Mol Genet Metab</span>
|
||
2019 Apr;126(4):475-488.
|
||
Epub 2019 Jan 21
|
||
doi: 10.1016/j.ymgme.2019.01.013.
|
||
<span class="bold">PMID: </span><a href="/pubmed/30691927" target="_blank">30691927</a></div>
|
||
|
||
<div class="nl"><a target="_blank" href="/pubmed/26649472">Early growth and development impairments in patients with ganglioside GM3 synthase deficiency.</a></div>
|
||
<div class="portlet_content ln"><span class="medgenPMauthor">Wang H,
|
||
Wang A,
|
||
Wang D,
|
||
Bright A,
|
||
Sency V,
|
||
Zhou A,
|
||
Xin B</span><br />
|
||
<span class="medgenPMjournal">Clin Genet</span>
|
||
2016 May;89(5):625-9.
|
||
Epub 2016 Jan 20
|
||
doi: 10.1111/cge.12703.
|
||
<span class="bold">PMID: </span><a href="/pubmed/26649472" target="_blank">26649472</a></div>
|
||
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22GM3%20synthase%20deficiency%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 (2)</a></div><h3 class="subhead">Diagnosis</h3>
|
||
<div class="nl"><a target="_blank" href="/pubmed/37676252">Neural-specific alterations in glycosphingolipid biosynthesis and cell signaling associated with two human ganglioside GM3 synthase deficiency variants.</a></div>
|
||
<div class="portlet_content ln"><span class="medgenPMauthor">Dookwah M,
|
||
Wagner SK,
|
||
Ishihara M,
|
||
Yu SH,
|
||
Ulrichs H,
|
||
Kulik MJ,
|
||
Zeltner N,
|
||
Dalton S,
|
||
Strauss KA,
|
||
Aoki K,
|
||
Steet R,
|
||
Tiemeyer M</span><br />
|
||
<span class="medgenPMjournal">Hum Mol Genet</span>
|
||
2023 Dec 1;32(24):3323-3341.
|
||
doi: 10.1093/hmg/ddad146.
|
||
<span class="bold">PMID: </span><a href="/pubmed/37676252" target="_blank">37676252</a><a href="/pmc/articles/PMC10695682" target="_blank" class="PubMedFree">Free PMC Article</a></div>
|
||
|
||
<div class="nl"><a target="_blank" href="/pubmed/36690566">Neurological insights on two siblings with GM3 synthase deficiency due to novel compound heterozygous ST3GAL5 variants.</a></div>
|
||
<div class="portlet_content ln"><span class="medgenPMauthor">Watanabe S,
|
||
Lei M,
|
||
Nakagawa E,
|
||
Takeshita E,
|
||
Inamori KI,
|
||
Shishido F,
|
||
Sasaki M,
|
||
Mitsuhashi S,
|
||
Matsumoto N,
|
||
Kimura Y,
|
||
Iwasaki M,
|
||
Takahashi Y,
|
||
Mizusawa H,
|
||
Migita O,
|
||
Ohno I,
|
||
Inokuchi JI</span><br />
|
||
<span class="medgenPMjournal">Brain Dev</span>
|
||
2023 May;45(5):270-277.
|
||
Epub 2023 Jan 21
|
||
doi: 10.1016/j.braindev.2023.01.002.
|
||
<span class="bold">PMID: </span><a href="/pubmed/36690566" target="_blank">36690566</a></div>
|
||
|
||
<div class="nl"><a target="_blank" href="/pubmed/35628171">Ganglioside GM3 Synthase Deficiency in Mouse Models and Human Patients.</a></div>
|
||
<div class="portlet_content ln"><span class="medgenPMauthor">Inamori KI,
|
||
Inokuchi JI</span><br />
|
||
<span class="medgenPMjournal">Int J Mol Sci</span>
|
||
2022 May 11;23(10)
|
||
doi: 10.3390/ijms23105368.
|
||
<span class="bold">PMID: </span><a href="/pubmed/35628171" target="_blank">35628171</a><a href="/pmc/articles/PMC9141422" target="_blank" class="PubMedFree">Free PMC Article</a></div>
|
||
|
||
<div class="nl"><a target="_blank" href="/pubmed/23436467">Cutaneous dyspigmentation in patients with ganglioside GM3 synthase deficiency.</a></div>
|
||
<div class="portlet_content ln"><span class="medgenPMauthor">Wang H,
|
||
Bright A,
|
||
Xin B,
|
||
Bockoven JR,
|
||
Paller AS</span><br />
|
||
<span class="medgenPMjournal">Am J Med Genet A</span>
|
||
2013 Apr;161A(4):875-9.
|
||
Epub 2013 Feb 22
|
||
doi: 10.1002/ajmg.a.35826.
|
||
<span class="bold">PMID: </span><a href="/pubmed/23436467" target="_blank">23436467</a></div>
|
||
|
||
<div class="nl"><a target="_blank" href="/pubmed/22990144">Refractory epilepsy and mitochondrial dysfunction due to GM3 synthase deficiency.</a></div>
|
||
<div class="portlet_content ln"><span class="medgenPMauthor">Fragaki K,
|
||
Ait-El-Mkadem S,
|
||
Chaussenot A,
|
||
Gire C,
|
||
Mengual R,
|
||
Bonesso L,
|
||
Bénéteau M,
|
||
Ricci JE,
|
||
Desquiret-Dumas V,
|
||
Procaccio V,
|
||
Rötig A,
|
||
Paquis-Flucklinger V</span><br />
|
||
<span class="medgenPMjournal">Eur J Hum Genet</span>
|
||
2013 May;21(5):528-34.
|
||
Epub 2012 Sep 19
|
||
doi: 10.1038/ejhg.2012.202.
|
||
<span class="bold">PMID: </span><a href="/pubmed/22990144" target="_blank">22990144</a><a href="/pmc/articles/PMC3641379" target="_blank" class="PubMedFree">Free PMC Article</a></div>
|
||
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22GM3%20synthase%20deficiency%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 (9)</a></div><h3 class="subhead">Therapy</h3>
|
||
<div class="nl"><a target="_blank" href="/pubmed/33714697">AAV-Mediated Gene Therapy for Glycosphingolipid Biosynthesis Deficiencies.</a></div>
|
||
<div class="portlet_content ln"><span class="medgenPMauthor">Yang H,
|
||
Brown RH Jr,
|
||
Wang D,
|
||
Strauss KA,
|
||
Gao G</span><br />
|
||
<span class="medgenPMjournal">Trends Mol Med</span>
|
||
2021 Jun;27(6):520-523.
|
||
Epub 2021 Mar 10
|
||
doi: 10.1016/j.molmed.2021.02.004.
|
||
<span class="bold">PMID: </span><a href="/pubmed/33714697" target="_blank">33714697</a><a href="/pmc/articles/PMC8840833" target="_blank" class="PubMedFree">Free PMC Article</a></div>
|
||
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22GM3%20synthase%20deficiency%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/36690566">Neurological insights on two siblings with GM3 synthase deficiency due to novel compound heterozygous ST3GAL5 variants.</a></div>
|
||
<div class="portlet_content ln"><span class="medgenPMauthor">Watanabe S,
|
||
Lei M,
|
||
Nakagawa E,
|
||
Takeshita E,
|
||
Inamori KI,
|
||
Shishido F,
|
||
Sasaki M,
|
||
Mitsuhashi S,
|
||
Matsumoto N,
|
||
Kimura Y,
|
||
Iwasaki M,
|
||
Takahashi Y,
|
||
Mizusawa H,
|
||
Migita O,
|
||
Ohno I,
|
||
Inokuchi JI</span><br />
|
||
<span class="medgenPMjournal">Brain Dev</span>
|
||
2023 May;45(5):270-277.
|
||
Epub 2023 Jan 21
|
||
doi: 10.1016/j.braindev.2023.01.002.
|
||
<span class="bold">PMID: </span><a href="/pubmed/36690566" target="_blank">36690566</a></div>
|
||
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22GM3%20synthase%20deficiency%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 (1)</a></div><h3 class="subhead">Clinical prediction guides</h3>
|
||
<div class="nl"><a target="_blank" href="/pubmed/30691927">Recessive GM3 synthase deficiency: Natural history, biochemistry, and therapeutic frontier.</a></div>
|
||
<div class="portlet_content ln"><span class="medgenPMauthor">Bowser LE,
|
||
Young M,
|
||
Wenger OK,
|
||
Ammous Z,
|
||
Brigatti KW,
|
||
Carson VJ,
|
||
Moser T,
|
||
Deline J,
|
||
Aoki K,
|
||
Morlet T,
|
||
Scott EM,
|
||
Puffenberger EG,
|
||
Robinson DL,
|
||
Hendrickson C,
|
||
Salvin J,
|
||
Gottlieb S,
|
||
Heaps AD,
|
||
Tiemeyer M,
|
||
Strauss KA</span><br />
|
||
<span class="medgenPMjournal">Mol Genet Metab</span>
|
||
2019 Apr;126(4):475-488.
|
||
Epub 2019 Jan 21
|
||
doi: 10.1016/j.ymgme.2019.01.013.
|
||
<span class="bold">PMID: </span><a href="/pubmed/30691927" target="_blank">30691927</a></div>
|
||
|
||
<div class="nl"><a target="_blank" href="/pubmed/22990144">Refractory epilepsy and mitochondrial dysfunction due to GM3 synthase deficiency.</a></div>
|
||
<div class="portlet_content ln"><span class="medgenPMauthor">Fragaki K,
|
||
Ait-El-Mkadem S,
|
||
Chaussenot A,
|
||
Gire C,
|
||
Mengual R,
|
||
Bonesso L,
|
||
Bénéteau M,
|
||
Ricci JE,
|
||
Desquiret-Dumas V,
|
||
Procaccio V,
|
||
Rötig A,
|
||
Paquis-Flucklinger V</span><br />
|
||
<span class="medgenPMjournal">Eur J Hum Genet</span>
|
||
2013 May;21(5):528-34.
|
||
Epub 2012 Sep 19
|
||
doi: 10.1038/ejhg.2012.202.
|
||
<span class="bold">PMID: </span><a href="/pubmed/22990144" target="_blank">22990144</a><a href="/pmc/articles/PMC3641379" target="_blank" class="PubMedFree">Free PMC Article</a></div>
|
||
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22GM3%20synthase%20deficiency%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 (2)</a></div></div>
|
||
</div>
|
||
</div></div></div></div></div></div></div>
|
||
<div id="messagearea_bottom">
|
||
|
||
</div>
|
||
<div class=" bottom">
|
||
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
<div class="supplemental col three_col last">
|
||
<h2 class="offscreen_noflow">Supplemental Content</h2>
|
||
|
||
<div>
|
||
|
||
<!-- MedGen supplemental column starts here -->
|
||
<div class="rightCol mgCol">
|
||
<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>
|
||
</div>
|
||
|
||
<div class="portlet mgSection" id="ID_106">
|
||
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Genetic_Testing_Registry">Genetic Testing Registry</h1><a sid="106" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
|
||
<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C1836824%5bDISCUI%5d&filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (24)</a></li>
|
||
<li><a href="/gtr/tests?term=C1836824%5bDISCUI%5d&filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (25)</a></li>
|
||
<li><a href="/gtr/tests?term=C1836824%5bDISCUI%5d&filter=method%3A2%5F19" target="_blank">Targeted variant analysis (6)</a></li>
|
||
<li class="portletSeeAll portletSeeAllPad"><total><a href="/gtr/tests?term=C1836824%5bDISCUI%5d" target="_blank">See all (29)</a></total></li>
|
||
</ul></div>
|
||
</div>
|
||
|
||
<div class="portlet mgSection" id="ID_119">
|
||
<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&start=1&limit=10&sort=score%20desc&field=number&search=609056" target="_blank">OMIM</a></li><li><a href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Expert=370933" target="_blank">Orphanet</a></li><li><a href="https://clinicaltrials.gov/search?cond=GM3%20synthase%20deficiency" target="_blank">ClinicalTrials.gov</a></li></ul></div>
|
||
</div>
|
||
|
||
<div class="portlet mgSection" id="ID_115">
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Molecular_resources">Molecular resources</h1><a sid="115" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
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||
<div class="portlet_content ln"><ul><li><a href="http://www.omim.org/search?index=entry&start=1&limit=10&sort=score%20desc&field=number&search=604402" target="_blank">OMIM</a></li><li><a href="/clinvar/?term=8869[geneid]" target="_blank">View ST3GAL5 variations in ClinVar</a></li><li><a href="/nuccore/257153325" target="_blank">RefSeqGene</a></li><li><a href="https://catalog.coriell.org/Search?q=609056" target="_blank">Coriell Institute for Medical Research</a></li></ul></div>
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<h3>Reviews</h3>
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|
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<a href="/pubmed?term=GM3%20synthase%20deficiency%20AND%20humans[mesh]%20AND%20review[publication%20type]" ref="ncbi_uid=&discoId=gtr_reviews&linkpos=3&linkpostotal=3" target="_blank">Reviews in PubMed</a>
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<a class="brieflinkpopperctrl" href="/pubmed?LinkName=medgen_pubmed_genereviews&from_uid=323005" ref="log$=recordlinks">PubMed (GeneReviews)</a>
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<div class="brieflinkpop offscreen_noflow">GeneReviews in PubMed</div>
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<li class="brieflinkpopper">
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<a class="brieflinkpopperctrl" href="/pubmed?LinkName=medgen_pubmed_omim&from_uid=323005" ref="log$=recordlinks">PubMed (OMIM)</a>
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<div class="brieflinkpop offscreen_noflow">Related literature resources in PubMed</div>
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<a class="htb ralinkpopperctrl" ref="log$=activity&linkpos=1" href="/portal/utils/pageresolver.fcgi?recordid=67ca72a084f3725e5962d418">GM3 synthase deficiency</a>
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<div class="ralinkpop offscreen_noflow">GM3 synthase deficiency<div class="brieflinkpopdesc"></div></div>
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<div class="tertiary">MedGen</div>
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<a class="htb" ref="log$=activity&linkpos=2" href="/portal/utils/pageresolver.fcgi?recordid=67ca729fb15b832ebc35619c">C1836824[conceptid] <span class="number">(1)</span></a>
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<a class="htb ralinkpopperctrl" ref="log$=activity&linkpos=3" href="/portal/utils/pageresolver.fcgi?recordid=67ca729ea68b6b5afc9b948e">C0085131[trait identifier] AND "Labcorp Genetics (formerly Invita... <span class="number">(905)</span></a>
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<div class="ralinkpop offscreen_noflow">C0085131[trait identifier] AND "Labcorp Genetics (formerly Invitae), Labcorp"[submitter]<div class="brieflinkpopdesc">Search</div></div>
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<a class="htb ralinkpopperctrl" ref="log$=activity&linkpos=4" href="/portal/utils/pageresolver.fcgi?recordid=67ca729db15b832ebc3555c0">GM1 gangliosidosis</a>
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<div class="tertiary">MedGen</div>
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<a class="htb ralinkpopperctrl" ref="log$=activity&linkpos=5" href="/portal/utils/pageresolver.fcgi?recordid=67ca729bf4a390645e6dd01d">C3149117[trait identifier] AND "Labcorp Genetics (formerly Invita... <span class="number">(775)</span></a>
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<div class="ralinkpop offscreen_noflow">C3149117[trait identifier] AND "Labcorp Genetics (formerly Invitae), Labcorp"[submitter]<div class="brieflinkpopdesc">Search</div></div>
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<div class="tertiary">ClinVar</div>
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