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<meta name="keywords" content="C1843504, disease or syndrome, non-syndromic pontocerebellar hypoplasia caused by mutation in vrk1, pch1, pch1a, pontocerebellar hypoplasia type 1, pontocerebellar hypoplasia type 1a, pontocerebellar hypoplasia with anterior horn cell disease, pontocerebellar hypoplasia with infantile spinal muscular atrophy, pontocerebellar hypoplasia, type 1a, vrk1, vrk1 non-syndromic pontocerebellar hypoplasia, 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="Pontocerebellar hypoplasia (PCH) refers to a group of severe neurodegenerative disorders affecting growth and function of the brainstem and cerebellum, resulting in little or no development. Different types were classified based on the clinical picture and the spectrum of pathologic changes. PCH type 1 is characterized by central and peripheral motor dysfunction associated with anterior horn cell degeneration resembling infantile spinal muscular atrophy (SMA; see SMA1, 253300); death usually occurs early.&#13; Genetic Heterogeneity of Pontocerebellar Hypoplasia&#13; Also see PCH1B (614678), caused by mutation in the EXOSC3 gene (606489); PCH1C (616081), caused by mutation in the EXOSC8 gene (606019); PCH1D (618065), caused by mutation in the EXOSC9 gene (606180); PCH1E (619303), caused by mutation in the SLC25A46 gene (610826); PCH1F (619304), caused by mutation in the EXOSC1 gene (606493); PCH2A (277470), caused by mutation in the TSEN54 gene (608755); PCH2B (612389), caused by mutation in the TSEN2 gene (608753); PCH2C (612390), caused by mutation in the TSEN34 gene (608754); PCH2D (613811), caused by mutation in the SEPSECS gene (613009); PCH3 (608027), caused by mutation in the PCLO gene (604918); PCH4 (225753), caused by mutation in the TSEN54 gene; PCH5 (610204), caused by mutation in the TSEN54 gene; PCH6 (611523), caused by mutation in the RARS2 gene (611524); PCH7 (614969), caused by mutation in the TOE1 gene (613931); PCH8 (614961), caused by mutation in the CHMP1A gene (164010); PCH9 (615809), caused by mutation in the AMPD2 gene (102771); PCH10 (615803), caused by mutation in the CLP1 gene (608757); PCH11 (617695), caused by mutation in the TBC1D23 gene (617687); PCH12 (618266), caused by mutation in the COASY gene (609855); PCH13 (618606), caused by mutation in the VPS51 gene (615738); PCH14 (619301), caused by mutation in the PPIL1 gene (601301); PCH15 (619302), caused by mutation in the CDC40 gene (605585); PCH16 (619527), caused by mutation in the MINPP1 gene (605391); and PCH17 (619909), caused by mutation in the PRDM13 gene (616741) on chromosome 6q16." /><meta name="robots" content="index,nofollow,noarchive" />
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<title>Pontocerebellar hypoplasia type 1A (Concept Id: C1843504)
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<!--
UID=335969
ConceptID=C1843504
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Pontocerebellar hypoplasia type 1A<span class="h1sub">(PCH1A)</span></div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>335969</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information."><span class="highlight" style="background-color:">C1843504</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>PCH1A; PONTOCEREBELLAR HYPOPLASIA WITH ANTERIOR HORN CELL DISEASE; PONTOCEREBELLAR HYPOPLASIA WITH INFANTILE SPINAL MUSCULAR ATROPHY</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="VRK1 - ID: 7443 - NCBI Gene" href="/gene/7443" class="medgenPMinfo">VRK1</a> (14q32.2)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>Monarch Initiative:</td>
<td><a href="https://monarchinitiative.org/disease/MONDO:0011866" target="_blank">MONDO:0011866</a></td></tr>
<tr><td>OMIM<span class="superscript">®</span>:</td>
<td><a href="https://omim.org/entry/607596" target="_blank">607596</a></td></tr>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Definition">Definition</h1><a sid="100" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">Pontocerebellar hypoplasia (PCH) refers to a group of severe neurodegenerative disorders affecting growth and function of the brainstem and cerebellum, resulting in little or no development. Different types were classified based on the clinical picture and the spectrum of pathologic changes. PCH type 1 is characterized by central and peripheral motor dysfunction associated with anterior horn cell degeneration resembling infantile spinal muscular atrophy (SMA; see SMA1, 253300); death usually occurs early.&#13; Genetic Heterogeneity of Pontocerebellar Hypoplasia&#13; Also see PCH1B (614678), caused by mutation in the EXOSC3 gene (606489); PCH1C (616081), caused by mutation in the EXOSC8 gene (606019); PCH1D (618065), caused by mutation in the EXOSC9 gene (606180); PCH1E (619303), caused by mutation in the SLC25A46 gene (610826); PCH1F (619304), caused by mutation in the EXOSC1 gene (606493); PCH2A (277470), caused by mutation in the TSEN54 gene (608755); PCH2B (612389), caused by mutation in the TSEN2 gene (608753); PCH2C (612390), caused by mutation in the TSEN34 gene (608754); PCH2D (613811), caused by mutation in the SEPSECS gene (613009); PCH3 (608027), caused by mutation in the PCLO gene (604918); PCH4 (225753), caused by mutation in the TSEN54 gene; PCH5 (610204), caused by mutation in the TSEN54 gene; PCH6 (611523), caused by mutation in the RARS2 gene (611524); PCH7 (614969), caused by mutation in the TOE1 gene (613931); PCH8 (614961), caused by mutation in the CHMP1A gene (164010); PCH9 (615809), caused by mutation in the AMPD2 gene (102771); PCH10 (615803), caused by mutation in the CLP1 gene (608757); PCH11 (617695), caused by mutation in the TBC1D23 gene (617687); PCH12 (618266), caused by mutation in the COASY gene (609855); PCH13 (618606), caused by mutation in the VPS51 gene (615738); PCH14 (619301), caused by mutation in the PPIL1 gene (601301); PCH15 (619302), caused by mutation in the CDC40 gene (605585); PCH16 (619527), caused by mutation in the MINPP1 gene (605391); and PCH17 (619909), caused by mutation in the PRDM13 gene (616741) on chromosome 6q16. [from <a title="Online Mendelian Inheritance in Man" href="http://www.omim.org" class="defSource" target="_blank">OMIM</a>]</div>
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<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_3130"><div><strong>Clubfoot</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>3130</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0009081</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Clubfoot is a congenital limb deformity defined as fixation of the foot in cavus, adductus, varus, and equinus (i.e., inclined inwards, axially rotated outwards, and pointing downwards) with concomitant soft tissue abnormalities (Cardy et al., 2007). Clubfoot may occur in isolation or as part of a syndrome (e.g., diastrophic dysplasia, 222600). Clubfoot has been reported with deficiency of long bones and mirror-image polydactyly (Gurnett et al., 2008; Klopocki et al., 2012).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/3130">Feature record</a> | <a href="/medgen?term=%22Clubfoot%22%5BClinical%20Features%5D%20OR%203130%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_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_324693"><div><strong>Poor suck</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324693</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837142</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An inadequate sucking reflex, resulting in the difficult of newborns to be breast-fed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/324693">Feature record</a> | <a href="/medgen?term=%22Poor%20suck%22%5BClinical%20Features%5D%20OR%20324693%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)&#10;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_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_5124"><div><strong>Fasciculations</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>5124</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0015644</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">Fasciculations are observed as small, local, involuntary muscle contractions (twitching) visible under the skin. Fasciculations result from increased irritability of an axon (which in turn is often a manifestation of disease of a motor neuron). This leads to sporadic discharges of all the muscle fibers controlled by the axon in isolation from other motor units.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/5124">Feature record</a> | <a href="/medgen?term=%22Fasciculations%22%5BClinical%20Features%5D%20OR%205124%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_10044"><div><strong>Intellectual disability, mild</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>10044</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0026106</a></dd><dt><span class="dotprefix"></span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Mild intellectual disability is defined as an intelligence quotient (IQ) in the range of 50-69.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/10044">Feature record</a> | <a href="/medgen?term=%22Intellectual%20disability%2C%20mild%22%5BClinical%20Features%5D%20OR%2010044%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_57738"><div><strong>Hyperreflexia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>57738</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0151889</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/57738">Feature record</a> | <a href="/medgen?term=%22Hyperreflexia%22%5BClinical%20Features%5D%20OR%2057738%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_68689"><div><strong>Hand tremor</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>68689</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0239842</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An unintentional, oscillating to-and-fro muscle movement affecting the hand.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/68689">Feature record</a> | <a href="/medgen?term=%22Hand%20tremor%22%5BClinical%20Features%5D%20OR%2068689%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_120578"><div><strong>Cerebellar hypoplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120578</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0266470</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Cerebellar hypoplasia is a descriptive term implying a cerebellum with a reduced volume, but a normal shape and is stable over time.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120578">Feature record</a> | <a href="/medgen?term=%22Cerebellar%20hypoplasia%22%5BClinical%20Features%5D%20OR%20120578%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_82859"><div><strong>Demyelinating peripheral neuropathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>82859</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0270922</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Demyelinating neuropathy is characterized by slow nerve conduction velocities with reduced amplitudes of sensory/motor nerve conduction and prolonged distal latencies.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/82859">Feature record</a> | <a href="/medgen?term=%22Demyelinating%20peripheral%20neuropathy%22%5BClinical%20Features%5D%20OR%2082859%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)&#10;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_196692"><div><strong>Limb ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>196692</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0750937</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A kind of ataxia that affects movements of the extremities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/196692">Feature record</a> | <a href="/medgen?term=%22Limb%20ataxia%22%5BClinical%20Features%5D%20OR%20196692%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_207266"><div><strong>Sensorimotor neuropathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>207266</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1112256</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/207266">Feature record</a> | <a href="/medgen?term=%22Sensorimotor%20neuropathy%22%5BClinical%20Features%5D%20OR%20207266%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_375215"><div><strong>Degeneration of anterior horn cells</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>375215</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1843505</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/375215">Feature record</a> | <a href="/medgen?term=%22Degeneration%20of%20anterior%20horn%20cells%22%5BClinical%20Features%5D%20OR%20375215%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_334768"><div><strong>Hypoplasia of the ventral pons</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>334768</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1843507</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Underdevelopment of the ventral portion of the pons.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/334768">Feature record</a> | <a href="/medgen?term=%22Hypoplasia%20of%20the%20ventral%20pons%22%5BClinical%20Features%5D%20OR%20334768%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_341246"><div><strong>Hypoplasia of the pons</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>341246</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848529</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Underdevelopment of the pons.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/341246">Feature record</a> | <a href="/medgen?term=%22Hypoplasia%20of%20the%20pons%22%5BClinical%20Features%5D%20OR%20341246%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_381392"><div><strong>Motor delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>381392</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854301</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A type of Developmental delay characterized by a delay in acquiring motor skills.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/381392">Feature record</a> | <a href="/medgen?term=%22Motor%20delay%22%5BClinical%20Features%5D%20OR%20381392%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_383904"><div><strong>Lateral ventricle dilatation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>383904</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1856409</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/383904">Feature record</a> | <a href="/medgen?term=%22Lateral%20ventricle%20dilatation%22%5BClinical%20Features%5D%20OR%20383904%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_382164"><div><strong>Brisk reflexes</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382164</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2673700</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Tendon reflexes that are noticeably more active than usual (conventionally denoted 3+ on clinical examination). Brisk reflexes may or may not indicate a neurological lesion. They are distinguished from hyperreflexia by the fact that hyerreflexia is characterized by hyperactive repeating (clonic) reflexes, which are considered to be always abnormal.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382164">Feature record</a> | <a href="/medgen?term=%22Brisk%20reflexes%22%5BClinical%20Features%5D%20OR%20382164%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_413431"><div><strong>Neuronal loss in basal ganglia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>413431</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2750913</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A reduction in the number of nerve cells in the basal ganglia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/413431">Feature record</a> | <a href="/medgen?term=%22Neuronal%20loss%20in%20basal%20ganglia%22%5BClinical%20Features%5D%20OR%20413431%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_416417"><div><strong>Basal ganglia gliosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>416417</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2750915</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Focal proliferation of glial cells in the basal ganglia.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/416417">Feature record</a> | <a href="/medgen?term=%22Basal%20ganglia%20gliosis%22%5BClinical%20Features%5D%20OR%20416417%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_811461"><div><strong>Intellectual disability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>811461</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3714756</a></dd><dt><span class="dotprefix"></span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">Intellectual disability, previously referred to as mental retardation, is characterized by subnormal intellectual functioning that occurs during the developmental period. It is defined by an IQ score below 70.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/811461">Feature record</a> | <a href="/medgen?term=%22Intellectual%20disability%22%5BClinical%20Features%5D%20OR%20811461%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1646740"><div><strong>Cerebral cortical atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1646740</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551583</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Atrophy of the cortex of the cerebrum.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1646740">Feature record</a> | <a href="/medgen?term=%22Cerebral%20cortical%20atrophy%22%5BClinical%20Features%5D%20OR%201646740%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_7755"><div><strong>Spinal muscular atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>7755</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0026847</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spinal muscular atrophy (SMA) is characterized by muscle weakness and atrophy resulting from progressive degeneration and irreversible loss of the anterior horn cells in the spinal cord (i.e., lower motor neurons) and the brain stem nuclei. The onset of weakness ranges from before birth to adulthood. The weakness is symmetric, proximal greater than distal, and progressive. Before the genetic basis of SMA was understood, it was classified into clinical subtypes based on maximum motor function achieved; however, it is now apparent that the phenotype of SMN1-associated SMA spans a continuum without clear delineation of subtypes. With supportive care only, poor weight gain with growth failure, restrictive lung disease, scoliosis, and joint contractures are common complications; however, newly available targeted treatment options are changing the natural history of the disease.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/7755">Feature record</a> | <a href="/medgen?term=%22Spinal%20muscular%20atrophy%22%5BClinical%20Features%5D%20OR%207755%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_57735"><div><strong>Muscle weakness</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>57735</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0151786</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Reduced strength of muscles.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/57735">Feature record</a> | <a href="/medgen?term=%22Muscle%20weakness%22%5BClinical%20Features%5D%20OR%2057735%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_83066"><div><strong>Congenital contracture</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>83066</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0332878</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">One or more flexion contractures (a bent joint that cannot be straightened actively or passively) that are present at birth.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/83066">Feature record</a> | <a href="/medgen?term=%22Congenital%20contracture%22%5BClinical%20Features%5D%20OR%2083066%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_338530"><div><strong>Distal amyotrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338530</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1848736</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Muscular atrophy affecting muscles in the distal portions of the extremities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338530">Feature record</a> | <a href="/medgen?term=%22Distal%20amyotrophy%22%5BClinical%20Features%5D%20OR%20338530%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_344031"><div><strong>Enlarged cisterna magna</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>344031</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1853377</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Increase in size of the cisterna magna, one of three principal openings in the subarachnoid space between the arachnoid and pia mater, located between the cerebellum and the dorsal surface of the medulla oblongata.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/344031">Feature record</a> | <a href="/medgen?term=%22Enlarged%20cisterna%20magna%22%5BClinical%20Features%5D%20OR%20344031%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_867363"><div><strong>EMG: neuropathic changes</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>867363</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4021727</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">The presence of characteristic findings of denervation on electromyography (fibrillations, positive sharp waves, and giant motor unit potentials).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/867363">Feature record</a> | <a href="/medgen?term=%22EMG%3A%20neuropathic%20changes%22%5BClinical%20Features%5D%20OR%20867363%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_11197"><div><strong>Respiratory insufficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>11197</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0035229</a></dd><dt><span class="dotprefix"></span></dt><dd>Pathologic Function</dd></dl></div></div></div>
<div class="spaceAbove">Impairment of gas exchange within the lungs secondary to a disease process, neoplasm, or trauma, possibly resulting in hypoxia, hypercarbia, or both, but not requiring intubation or mechanical ventilation. Patients are normally managed with pharmaceutical therapy, supplemental oxygen, or both.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/11197">Feature record</a> | <a href="/medgen?term=%22Respiratory%20insufficiency%22%5BClinical%20Features%5D%20OR%2011197%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_786098"><div><strong>Intercostal muscle weakness</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>786098</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0240017</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Lack of strength of the intercostal muscles, i.e., of the muscle groups running along the ribs that create and move the chest wall.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/786098">Feature record</a> | <a href="/medgen?term=%22Intercostal%20muscle%20weakness%22%5BClinical%20Features%5D%20OR%20786098%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_65987"><div><strong>Tongue fasciculations</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>65987</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0239548</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Fasciculations or fibrillation affecting the tongue muscle.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/65987">Feature record</a> | <a href="/medgen?term=%22Tongue%20fasciculations%22%5BClinical%20Features%5D%20OR%2065987%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_65987" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Tongue fasciculations</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_3130" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Clubfoot</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><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_324693" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Poor suck</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_83066" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital contracture</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_338530" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Distal amyotrophy</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_867363" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">EMG: neuropathic changes</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_344031" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Enlarged cisterna magna</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_57735" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscle weakness</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_7755" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spinal muscular atrophy</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_416417" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Basal ganglia gliosis</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_382164" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Brisk reflexes</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_120578" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar hypoplasia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1646740" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebral cortical atrophy</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_375215" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Degeneration of anterior horn cells</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_82859" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Demyelinating peripheral neuropathy</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_5124" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fasciculations</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_68689" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hand tremor</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_57738" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hyperreflexia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_341246" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypoplasia of the pons</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_334768" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypoplasia of the ventral pons</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_811461" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_10044" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, mild</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_383904" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lateral ventricle dilatation</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_196692" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Limb ataxia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_381392" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Motor delay</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_413431" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronal loss in basal ganglia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_207266" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Sensorimotor neuropathy</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></ul></li><li><span class="TLline">Abnormality of the respiratory system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_786098" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intercostal muscle weakness</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_11197" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Respiratory insufficiency</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="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C1261175[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=224703">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=224703" ref="ncbi_uid=224703">V</a></span></span><span class="TLline"><a href="/medgen/224703" ref="tree=GTR&amp;ncbi_uid=224703&amp;link_uid=224703" title="View MedGen record for 'Pontoneocerebellar hypoplasia'">Pontoneocerebellar hypoplasia</a></span><ul><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C5442006[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=1780208">C</a></span><span class="chiclet Rcolor round" title="Research test"><a target="_blank" href="/gtr/tests/?term=C5442006[DISCUI]&amp;test_type=Research&amp;redirect=true" ref="ncbi_uid=1780208">R</a></span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=1780208" ref="ncbi_uid=1780208">V</a></span></span><span class="TLline"><a href="/medgen/1780208" ref="tree=GTR&amp;ncbi_uid=1780208&amp;link_uid=1780208" title="View MedGen record for 'Congenital pontocerebellar hypoplasia type 1'">Congenital pontocerebellar hypoplasia type 1</a></span><ul><li class="matched_ds"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C1843504[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=335969">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=335969" target="_blank" href="/omim/602168">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=335969" ref="ncbi_uid=335969">V</a></span></span><span class="TLline">Pontocerebellar hypoplasia type 1A</span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C3553449[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=766363">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=766363" target="_blank" href="/omim/606489">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK236968/" ref="ncbi_uid=766363">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=766363" ref="ncbi_uid=766363">V</a></span></span><span class="TLline"><a href="/medgen/766363" ref="tree=GTR&amp;ncbi_uid=766363&amp;link_uid=766363" title="View MedGen record for 'Pontocerebellar hypoplasia type 1B'">Pontocerebellar hypoplasia type 1B</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C4015160[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=863597">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=863597" target="_blank" href="/omim/606019">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=863597" ref="ncbi_uid=863597">V</a></span></span><span class="TLline"><a href="/medgen/863597" ref="tree=GTR&amp;ncbi_uid=863597&amp;link_uid=863597" title="View MedGen record for 'Pontocerebellar hypoplasia, type 1C'">Pontocerebellar hypoplasia, type 1C</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C4748058[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=1648387">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=1648387" target="_blank" href="/omim/606180">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=1648387" ref="ncbi_uid=1648387">V</a></span></span><span class="TLline"><a href="/medgen/1648387" ref="tree=GTR&amp;ncbi_uid=1648387&amp;link_uid=1648387" title="View MedGen record for 'Pontocerebellar hypoplasia, type 1D'">Pontocerebellar hypoplasia, type 1D</a></span></li></ul></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C2932714[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=420956">C</a></span><span class="chiclet Rcolor round" title="Research test"><a target="_blank" href="/gtr/tests/?term=C2932714[DISCUI]&amp;test_type=Research&amp;redirect=true" ref="ncbi_uid=420956">R</a></span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK9673/" ref="ncbi_uid=420956">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=420956" ref="ncbi_uid=420956">V</a></span></span><span class="TLline"><a href="/medgen/420956" ref="tree=GTR&amp;ncbi_uid=420956&amp;link_uid=420956" title="View MedGen record for 'Pontocerebellar hypoplasia type 2'">Pontocerebellar hypoplasia type 2</a></span><ul><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C1848526[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=376379">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=376379" target="_blank" href="/omim/277470">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK9673/" ref="ncbi_uid=376379">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=376379" ref="ncbi_uid=376379">V</a></span></span><span class="TLline"><a href="/medgen/376379" ref="tree=GTR&amp;ncbi_uid=376379&amp;link_uid=376379" title="View MedGen record for 'Pontocerebellar hypoplasia type 2A'">Pontocerebellar hypoplasia type 2A</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C2676466[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=393505">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=393505" target="_blank" href="/omim/608753">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK9673/" ref="ncbi_uid=393505">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=393505" ref="ncbi_uid=393505">V</a></span></span><span class="TLline"><a href="/medgen/393505" ref="tree=GTR&amp;ncbi_uid=393505&amp;link_uid=393505" title="View MedGen record for 'Pontocerebellar hypoplasia type 2B'">Pontocerebellar hypoplasia type 2B</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C2676465[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=382856">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=382856" target="_blank" href="/omim/608754">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK9673/" ref="ncbi_uid=382856">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=382856" ref="ncbi_uid=382856">V</a></span></span><span class="TLline"><a href="/medgen/382856" ref="tree=GTR&amp;ncbi_uid=382856&amp;link_uid=382856" title="View MedGen record for 'Pontocerebellar hypoplasia type 2C'">Pontocerebellar hypoplasia type 2C</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C3151140[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=462490">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=462490" target="_blank" href="/omim/613009">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=462490" ref="ncbi_uid=462490">V</a></span></span><span class="TLline"><a href="/medgen/462490" ref="tree=GTR&amp;ncbi_uid=462490&amp;link_uid=462490" title="View MedGen record for 'Pontocerebellar hypoplasia type 2D'">Pontocerebellar hypoplasia type 2D</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C4014488[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=862925">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=862925" target="_blank" href="/omim/615850">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=862925" ref="ncbi_uid=862925">V</a></span></span><span class="TLline"><a href="/medgen/862925" ref="tree=GTR&amp;ncbi_uid=862925&amp;link_uid=862925" title="View MedGen record for 'Pontocerebellar hypoplasia type 2E'">Pontocerebellar hypoplasia type 2E</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C4310757[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=934724">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=934724" target="_blank" href="/omim/608756">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=934724" ref="ncbi_uid=934724">V</a></span></span><span class="TLline"><a href="/medgen/934724" ref="tree=GTR&amp;ncbi_uid=934724&amp;link_uid=934724" title="View MedGen record for 'Pontocerebellar hypoplasia, type 2F'">Pontocerebellar hypoplasia, type 2F</a></span></li></ul></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C1842687[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=334225">C</a></span><span class="chiclet Rcolor round" title="Research test"><a target="_blank" href="/gtr/tests/?term=C1842687[DISCUI]&amp;test_type=Research&amp;redirect=true" ref="ncbi_uid=334225">R</a></span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=334225" target="_blank" href="/omim/604918">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=334225" ref="ncbi_uid=334225">V</a></span></span><span class="TLline"><a href="/medgen/334225" ref="tree=GTR&amp;ncbi_uid=334225&amp;link_uid=334225" title="View MedGen record for 'Pontocerebellar hypoplasia type 3'">Pontocerebellar hypoplasia type 3</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C1856974[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=384027">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=384027" target="_blank" href="/omim/225753">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK9673/" ref="ncbi_uid=384027">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=384027" ref="ncbi_uid=384027">V</a></span></span><span class="TLline"><a href="/medgen/384027" ref="tree=GTR&amp;ncbi_uid=384027&amp;link_uid=384027" title="View MedGen record for 'Pontocerebellar hypoplasia type 4'">Pontocerebellar hypoplasia type 4</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C1857762[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=341845">C</a></span><span class="chiclet Rcolor round" title="Research test"><a target="_blank" href="/gtr/tests/?term=C1857762[DISCUI]&amp;test_type=Research&amp;redirect=true" ref="ncbi_uid=341845">R</a></span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=341845" target="_blank" href="/omim/608755">O</a></span><span class="chiclet Gcolor" title="GeneReviews"><a target="_blank" href="/books/NBK9673/" ref="ncbi_uid=341845">G</a></span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=341845" ref="ncbi_uid=341845">V</a></span></span><span class="TLline"><a href="/medgen/341845" ref="tree=GTR&amp;ncbi_uid=341845&amp;link_uid=341845" title="View MedGen record for 'Pontocerebellar hypoplasia type 5'">Pontocerebellar hypoplasia type 5</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C1969084[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=370596">C</a></span><span class="chiclet Rcolor round" title="Research test"><a target="_blank" href="/gtr/tests/?term=C1969084[DISCUI]&amp;test_type=Research&amp;redirect=true" ref="ncbi_uid=370596">R</a></span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=370596" target="_blank" href="/omim/611523">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=370596" ref="ncbi_uid=370596">V</a></span></span><span class="TLline"><a href="/medgen/370596" ref="tree=GTR&amp;ncbi_uid=370596&amp;link_uid=370596" title="View MedGen record for 'Pontocerebellar hypoplasia type 6'">Pontocerebellar hypoplasia type 6</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C3554209[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=767123">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=767123" target="_blank" href="/omim/164010">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=767123" ref="ncbi_uid=767123">V</a></span></span><span class="TLline"><a href="/medgen/767123" ref="tree=GTR&amp;ncbi_uid=767123&amp;link_uid=767123" title="View MedGen record for 'Pontocerebellar hypoplasia type 8'">Pontocerebellar hypoplasia type 8</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C4014354[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=862791">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=862791" target="_blank" href="/omim/102771">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=862791" ref="ncbi_uid=862791">V</a></span></span><span class="TLline"><a href="/medgen/862791" ref="tree=GTR&amp;ncbi_uid=862791&amp;link_uid=862791" title="View MedGen record for 'Pontocerebellar hypoplasia type 9'">Pontocerebellar hypoplasia type 9</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C5190575[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=1676575">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=1676575" target="_blank" href="/omim/608757">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=1676575" ref="ncbi_uid=1676575">V</a></span></span><span class="TLline"><a href="/medgen/1676575" ref="tree=GTR&amp;ncbi_uid=1676575&amp;link_uid=1676575" title="View MedGen record for 'Pontocerebellar hypoplasia type 10'">Pontocerebellar hypoplasia type 10</a></span></li><li class="TLclosed"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C4540164[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=1627627">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet Ocolor" title="OMIM"><a ref="ncbi_uid=1627627" target="_blank" href="/omim/617687">O</a></span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=1627627" ref="ncbi_uid=1627627">V</a></span></span><span class="TLline"><a href="/medgen/1627627" ref="tree=GTR&amp;ncbi_uid=1627627&amp;link_uid=1627627" title="View MedGen record for 'Pontocerebellar hypoplasia, type 11'">Pontocerebellar hypoplasia, type 11</a></span></li></ul></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/224703" ref="tree=MeSH" title="MedGen record for Pontoneocerebellar hypoplasia">Pontoneocerebellar hypoplasia</a></span><ul><li><span class="TLline"><a href="/medgen/1780208" ref="tree=MeSH" title="MedGen record for Congenital pontocerebellar hypoplasia type 1">Congenital pontocerebellar hypoplasia type 1</a></span><ul><li><span class="matched_ds">Pontocerebellar hypoplasia type 1A</span></li></ul></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&amp;data_id=156&amp;PatId=3132&amp;search=Disease_Classif_Simple&amp;new=1" class="ital bold">this link</a> to review classifications for <span class="ital">Pontocerebellar hypoplasia type 1A</span> in Orphanet.</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/29656927">Pontocerebellar hypoplasia type 1 for the neuropediatrician: Genotype-phenotype correlations and diagnostic guidelines based on new cases and overview of the literature.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ivanov I,
Atkinson D,
Litvinenko I,
Angelova L,
Andonova S,
Mumdjiev H,
Pacheva I,
Panova M,
Yordanova R,
Belovejdov V,
Petrova A,
Bosheva M,
Shmilev T,
Savov A,
Jordanova A</span><br />
<span class="medgenPMjournal">Eur J Paediatr Neurol</span>
2018 Jul;22(4):674-681.
Epub 2018 Apr 3
doi: 10.1016/j.ejpn.2018.03.011.
<span class="bold">PMID: </span><a href="/pubmed/29656927" target="_blank">29656927</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24524299">EXOSC3 mutations in pontocerebellar hypoplasia type 1: novel mutations and genotype-phenotype correlations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Eggens VR,
Barth PG,
Niermeijer JM,
Berg JN,
Darin N,
Dixit A,
Fluss J,
Foulds N,
Fowler D,
Hortobágyi T,
Jacques T,
King MD,
Makrythanasis P,
Máté A,
Nicoll JA,
O'Rourke D,
Price S,
Williams AN,
Wilson L,
Suri M,
Sztriha L,
Dijns-de Wissel MB,
van Meegen MT,
van Ruissen F,
Aronica E,
Troost D,
Majoie CB,
Marquering HA,
Poll-Thé BT,
Baas F</span><br />
<span class="medgenPMjournal">Orphanet J Rare Dis</span>
2014 Feb 13;9:23.
doi: 10.1186/1750-1172-9-23.
<span class="bold">PMID: </span><a href="/pubmed/24524299" target="_blank">24524299</a><a href="/pmc/articles/PMC3928094" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(pontocerebellar%20hypoplasia%20type%201a)%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 (2)</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/24524299">EXOSC3 mutations in pontocerebellar hypoplasia type 1: novel mutations and genotype-phenotype correlations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Eggens VR,
Barth PG,
Niermeijer JM,
Berg JN,
Darin N,
Dixit A,
Fluss J,
Foulds N,
Fowler D,
Hortobágyi T,
Jacques T,
King MD,
Makrythanasis P,
Máté A,
Nicoll JA,
O'Rourke D,
Price S,
Williams AN,
Wilson L,
Suri M,
Sztriha L,
Dijns-de Wissel MB,
van Meegen MT,
van Ruissen F,
Aronica E,
Troost D,
Majoie CB,
Marquering HA,
Poll-Thé BT,
Baas F</span><br />
<span class="medgenPMjournal">Orphanet J Rare Dis</span>
2014 Feb 13;9:23.
doi: 10.1186/1750-1172-9-23.
<span class="bold">PMID: </span><a href="/pubmed/24524299" target="_blank">24524299</a><a href="/pmc/articles/PMC3928094" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23284067">Pontocerebellar hypoplasia type 1: clinical spectrum and relevance of EXOSC3 mutations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rudnik-Schöneborn S,
Senderek J,
Jen JC,
Houge G,
Seeman P,
Puchmajerová A,
Graul-Neumann L,
Seidel U,
Korinthenberg R,
Kirschner J,
Seeger J,
Ryan MM,
Muntoni F,
Steinlin M,
Sztriha L,
Colomer J,
Hübner C,
Brockmann K,
Van Maldergem L,
Schiff M,
Holzinger A,
Barth P,
Reardon W,
Yourshaw M,
Nelson SF,
Eggermann T,
Zerres K</span><br />
<span class="medgenPMjournal">Neurology</span>
2013 Jan 29;80(5):438-46.
Epub 2013 Jan 2
doi: 10.1212/WNL.0b013e31827f0f66.
<span class="bold">PMID: </span><a href="/pubmed/23284067" target="_blank">23284067</a><a href="/pmc/articles/PMC3590055" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22452838">Spectrum of pontocerebellar hypoplasia in 13 girls and boys with CASK mutations: confirmation of a recognizable phenotype and first description of a male mosaic patient.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Burglen L,
Chantot-Bastaraud S,
Garel C,
Milh M,
Touraine R,
Zanni G,
Petit F,
Afenjar A,
Goizet C,
Barresi S,
Coussement A,
Ioos C,
Lazaro L,
Joriot S,
Desguerre I,
Lacombe D,
des Portes V,
Bertini E,
Siffroi JP,
de Villemeur TB,
Rodriguez D</span><br />
<span class="medgenPMjournal">Orphanet J Rare Dis</span>
2012 Mar 27;7:18.
doi: 10.1186/1750-1172-7-18.
<span class="bold">PMID: </span><a href="/pubmed/22452838" target="_blank">22452838</a><a href="/pmc/articles/PMC3351739" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21749694">Classification, diagnosis and potential mechanisms in pontocerebellar hypoplasia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Namavar Y,
Barth PG,
Poll-The BT,
Baas F</span><br />
<span class="medgenPMjournal">Orphanet J Rare Dis</span>
2011 Jul 12;6:50.
doi: 10.1186/1750-1172-6-50.
<span class="bold">PMID: </span><a href="/pubmed/21749694" target="_blank">21749694</a><a href="/pmc/articles/PMC3159098" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/20952379">Clinical, neuroradiological and genetic findings in pontocerebellar hypoplasia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Namavar Y,
Barth PG,
Kasher PR,
van Ruissen F,
Brockmann K,
Bernert G,
Writzl K,
Ventura K,
Cheng EY,
Ferriero DM,
Basel-Vanagaite L,
Eggens VR,
Krägeloh-Mann I,
De Meirleir L,
King M,
Graham JM Jr,
von Moers A,
Knoers N,
Sztriha L,
Korinthenberg R;
PCH Consortium,
Dobyns WB,
Baas F,
Poll-The BT</span><br />
<span class="medgenPMjournal">Brain</span>
2011 Jan;134(Pt 1):143-56.
Epub 2010 Oct 15
doi: 10.1093/brain/awq287.
<span class="bold">PMID: </span><a href="/pubmed/20952379" target="_blank">20952379</a><a href="/pmc/articles/PMC9136852" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Pontocerebellar%20hypoplasia%20type%201A%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 (11)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/35852507">Molecularly confirmed pontocerebellar hypoplasia in a large family from Slovakia with four severely affected children.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Radvanska E,
Pos Z,
Zatkova A,
Hyblova M,
Bauer F,
Szemes T,
Kadasi L,
Radvanszky J</span><br />
<span class="medgenPMjournal">Bratisl Lek Listy</span>
2022;123(8):568-572.
doi: 10.4149/BLL_2022_090.
<span class="bold">PMID: </span><a href="/pubmed/35852507" target="_blank">35852507</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29656927">Pontocerebellar hypoplasia type 1 for the neuropediatrician: Genotype-phenotype correlations and diagnostic guidelines based on new cases and overview of the literature.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ivanov I,
Atkinson D,
Litvinenko I,
Angelova L,
Andonova S,
Mumdjiev H,
Pacheva I,
Panova M,
Yordanova R,
Belovejdov V,
Petrova A,
Bosheva M,
Shmilev T,
Savov A,
Jordanova A</span><br />
<span class="medgenPMjournal">Eur J Paediatr Neurol</span>
2018 Jul;22(4):674-681.
Epub 2018 Apr 3
doi: 10.1016/j.ejpn.2018.03.011.
<span class="bold">PMID: </span><a href="/pubmed/29656927" target="_blank">29656927</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24524299">EXOSC3 mutations in pontocerebellar hypoplasia type 1: novel mutations and genotype-phenotype correlations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Eggens VR,
Barth PG,
Niermeijer JM,
Berg JN,
Darin N,
Dixit A,
Fluss J,
Foulds N,
Fowler D,
Hortobágyi T,
Jacques T,
King MD,
Makrythanasis P,
Máté A,
Nicoll JA,
O'Rourke D,
Price S,
Williams AN,
Wilson L,
Suri M,
Sztriha L,
Dijns-de Wissel MB,
van Meegen MT,
van Ruissen F,
Aronica E,
Troost D,
Majoie CB,
Marquering HA,
Poll-Thé BT,
Baas F</span><br />
<span class="medgenPMjournal">Orphanet J Rare Dis</span>
2014 Feb 13;9:23.
doi: 10.1186/1750-1172-9-23.
<span class="bold">PMID: </span><a href="/pubmed/24524299" target="_blank">24524299</a><a href="/pmc/articles/PMC3928094" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21749694">Classification, diagnosis and potential mechanisms in pontocerebellar hypoplasia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Namavar Y,
Barth PG,
Poll-The BT,
Baas F</span><br />
<span class="medgenPMjournal">Orphanet J Rare Dis</span>
2011 Jul 12;6:50.
doi: 10.1186/1750-1172-6-50.
<span class="bold">PMID: </span><a href="/pubmed/21749694" target="_blank">21749694</a><a href="/pmc/articles/PMC3159098" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/18805371">Pontocerebellar hypoplasia type 1.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Szabó N,
Szabó H,
Hortobágyi T,
Túri S,
Sztriha L</span><br />
<span class="medgenPMjournal">Pediatr Neurol</span>
2008 Oct;39(4):286-8.
doi: 10.1016/j.pediatrneurol.2008.06.017.
<span class="bold">PMID: </span><a href="/pubmed/18805371" target="_blank">18805371</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Pontocerebellar%20hypoplasia%20type%201A%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 (16)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/28653766">Extension of the phenotype of biallelic loss-of-function mutations in SLC25A46 to the severe form of pontocerebellar hypoplasia type I.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Braunisch MC,
Gallwitz H,
Abicht A,
Diebold I,
Holinski-Feder E,
Van Maldergem L,
Lammens M,
Kovács-Nagy R,
Alhaddad B,
Strom TM,
Meitinger T,
Senderek J,
Rudnik-Schöneborn S,
Haack TB</span><br />
<span class="medgenPMjournal">Clin Genet</span>
2018 Feb;93(2):255-265.
Epub 2017 Nov 8
doi: 10.1111/cge.13084.
<span class="bold">PMID: </span><a href="/pubmed/28653766" target="_blank">28653766</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24524299">EXOSC3 mutations in pontocerebellar hypoplasia type 1: novel mutations and genotype-phenotype correlations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Eggens VR,
Barth PG,
Niermeijer JM,
Berg JN,
Darin N,
Dixit A,
Fluss J,
Foulds N,
Fowler D,
Hortobágyi T,
Jacques T,
King MD,
Makrythanasis P,
Máté A,
Nicoll JA,
O'Rourke D,
Price S,
Williams AN,
Wilson L,
Suri M,
Sztriha L,
Dijns-de Wissel MB,
van Meegen MT,
van Ruissen F,
Aronica E,
Troost D,
Majoie CB,
Marquering HA,
Poll-Thé BT,
Baas F</span><br />
<span class="medgenPMjournal">Orphanet J Rare Dis</span>
2014 Feb 13;9:23.
doi: 10.1186/1750-1172-9-23.
<span class="bold">PMID: </span><a href="/pubmed/24524299" target="_blank">24524299</a><a href="/pmc/articles/PMC3928094" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23284067">Pontocerebellar hypoplasia type 1: clinical spectrum and relevance of EXOSC3 mutations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rudnik-Schöneborn S,
Senderek J,
Jen JC,
Houge G,
Seeman P,
Puchmajerová A,
Graul-Neumann L,
Seidel U,
Korinthenberg R,
Kirschner J,
Seeger J,
Ryan MM,
Muntoni F,
Steinlin M,
Sztriha L,
Colomer J,
Hübner C,
Brockmann K,
Van Maldergem L,
Schiff M,
Holzinger A,
Barth P,
Reardon W,
Yourshaw M,
Nelson SF,
Eggermann T,
Zerres K</span><br />
<span class="medgenPMjournal">Neurology</span>
2013 Jan 29;80(5):438-46.
Epub 2013 Jan 2
doi: 10.1212/WNL.0b013e31827f0f66.
<span class="bold">PMID: </span><a href="/pubmed/23284067" target="_blank">23284067</a><a href="/pmc/articles/PMC3590055" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21749694">Classification, diagnosis and potential mechanisms in pontocerebellar hypoplasia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Namavar Y,
Barth PG,
Poll-The BT,
Baas F</span><br />
<span class="medgenPMjournal">Orphanet J Rare Dis</span>
2011 Jul 12;6:50.
doi: 10.1186/1750-1172-6-50.
<span class="bold">PMID: </span><a href="/pubmed/21749694" target="_blank">21749694</a><a href="/pmc/articles/PMC3159098" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/12731647">Pontocerebellar hypoplasia type 1: new leads for an earlier diagnosis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Salman MS,
Blaser S,
Buncic JR,
Westall CA,
Héon E,
Becker L</span><br />
<span class="medgenPMjournal">J Child Neurol</span>
2003 Mar;18(3):220-5.
doi: 10.1177/08830738030180031201.
<span class="bold">PMID: </span><a href="/pubmed/12731647" target="_blank">12731647</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Pontocerebellar%20hypoplasia%20type%201A%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 (9)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/30141626">A Chemical Biology Approach to Model Pontocerebellar Hypoplasia Type 1B (PCH1B).</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">François-Moutal L,
Jahanbakhsh S,
Nelson ADL,
Ray D,
Scott DD,
Hennefarth MR,
Moutal A,
Perez-Miller S,
Ambrose AJ,
Al-Shamari A,
Coursodon P,
Meechoovet B,
Reiman R,
Lyons E,
Beilstein M,
Chapman E,
Morris QD,
Van Keuren-Jensen K,
Hughes TR,
Khanna R,
Koehler C,
Jen J,
Gokhale V,
Khanna M</span><br />
<span class="medgenPMjournal">ACS Chem Biol</span>
2018 Oct 19;13(10):3000-3010.
Epub 2018 Sep 6
doi: 10.1021/acschembio.8b00745.
<span class="bold">PMID: </span><a href="/pubmed/30141626" target="_blank">30141626</a><a href="/pmc/articles/PMC6504997" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23883322">Homozygous EXOSC3 mutation c.92G→C, p.G31A is a founder mutation causing severe pontocerebellar hypoplasia type 1 among the Czech Roma.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Schwabova J,
Brozkova DS,
Petrak B,
Mojzisova M,
Pavlickova K,
Haberlova J,
Mrazkova L,
Hedvicakova P,
Hornofova L,
Kaluzova M,
Fencl F,
Krutova M,
Zamecnik J,
Seeman P</span><br />
<span class="medgenPMjournal">J Neurogenet</span>
2013 Dec;27(4):163-9.
Epub 2013 Jul 25
doi: 10.3109/01677063.2013.814651.
<span class="bold">PMID: </span><a href="/pubmed/23883322" target="_blank">23883322</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23284067">Pontocerebellar hypoplasia type 1: clinical spectrum and relevance of EXOSC3 mutations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rudnik-Schöneborn S,
Senderek J,
Jen JC,
Houge G,
Seeman P,
Puchmajerová A,
Graul-Neumann L,
Seidel U,
Korinthenberg R,
Kirschner J,
Seeger J,
Ryan MM,
Muntoni F,
Steinlin M,
Sztriha L,
Colomer J,
Hübner C,
Brockmann K,
Van Maldergem L,
Schiff M,
Holzinger A,
Barth P,
Reardon W,
Yourshaw M,
Nelson SF,
Eggermann T,
Zerres K</span><br />
<span class="medgenPMjournal">Neurology</span>
2013 Jan 29;80(5):438-46.
Epub 2013 Jan 2
doi: 10.1212/WNL.0b013e31827f0f66.
<span class="bold">PMID: </span><a href="/pubmed/23284067" target="_blank">23284067</a><a href="/pmc/articles/PMC3590055" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22452838">Spectrum of pontocerebellar hypoplasia in 13 girls and boys with CASK mutations: confirmation of a recognizable phenotype and first description of a male mosaic patient.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Burglen L,
Chantot-Bastaraud S,
Garel C,
Milh M,
Touraine R,
Zanni G,
Petit F,
Afenjar A,
Goizet C,
Barresi S,
Coussement A,
Ioos C,
Lazaro L,
Joriot S,
Desguerre I,
Lacombe D,
des Portes V,
Bertini E,
Siffroi JP,
de Villemeur TB,
Rodriguez D</span><br />
<span class="medgenPMjournal">Orphanet J Rare Dis</span>
2012 Mar 27;7:18.
doi: 10.1186/1750-1172-7-18.
<span class="bold">PMID: </span><a href="/pubmed/22452838" target="_blank">22452838</a><a href="/pmc/articles/PMC3351739" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/18805371">Pontocerebellar hypoplasia type 1.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Szabó N,
Szabó H,
Hortobágyi T,
Túri S,
Sztriha L</span><br />
<span class="medgenPMjournal">Pediatr Neurol</span>
2008 Oct;39(4):286-8.
doi: 10.1016/j.pediatrneurol.2008.06.017.
<span class="bold">PMID: </span><a href="/pubmed/18805371" target="_blank">18805371</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Pontocerebellar%20hypoplasia%20type%201A%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 (6)</a></div></div>
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<h2 class="offscreen_noflow">Supplemental Content</h2>
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<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=C1843504%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (15)</a></li>
<li><a href="/gtr/tests?term=C1843504%5bDISCUI%5d&amp;filter=method%3A1%5F2" target="_blank">Enzyme assay (2)</a></li>
<li><a href="/gtr/tests?term=C1843504%5bDISCUI%5d&amp;filter=method%3A2%5F18" target="_blank">Mutation scanning of select exons (1)</a></li>
<li><a href="/gtr/tests?term=C1843504%5bDISCUI%5d&amp;filter=method%3A2%5F9" target="_blank">Sequence analysis of select exons (6)</a></li>
<li><a href="/gtr/tests?term=C1843504%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (39)</a></li>
<li><a href="/gtr/tests?term=C1843504%5bDISCUI%5d&amp;filter=method%3A2%5F19" target="_blank">Targeted variant analysis (13)</a></li>
<li class="portletSeeAll portletSeeAllPad"><total><a href="/gtr/tests?term=C1843504%5bDISCUI%5d" target="_blank">See all (40)</a></total></li>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Clinical_resources">Clinical resources</h1><a sid="119" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="https://www.omim.org/search?index=entry&amp;start=1&amp;limit=10&amp;sort=score%20desc&amp;field=number&amp;search=607596" target="_blank">OMIM</a></li><li><a href="https://clinicaltrials.gov/search?cond=Pontocerebellar%20hypoplasia%20type%201A" 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=(pontocerebellar%20hypoplasia%20type%201a)%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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