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<meta name="keywords" content="C1969084, congenital abnormality, congenital pontocerebellar hypoplasia type 6, disease or syndrome, encephalopathy fatal infantile with mitochondrial respiratory chain defects, encephalopathy, fatal infantile, with mitochondrial respiratory chain defects, fatal infantile encephalopathy with mitochondrial respiratory chain defect, fatal infantile encephalopathy with mitochondrial respiratory chain defects, non-syndromic pontocerebellar hypoplasia caused by mutation in rars2, pch6, pch6 - pontocerebellar hypoplasia type 6, pontocerebellar hypoplasia type 6, pontocerebellar hypoplasia, type 6, rars2, rars2 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) is a heterogeneous group of disorders characterized by an abnormally small cerebellum and brainstem and associated with severe developmental delay (Edvardson et al., 2007).&#13; For a phenotypic description and a discussion of genetic heterogeneity of PCH, see PCH1 (607596)." /><meta name="robots" content="index,nofollow,noarchive" />
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<title>Pontocerebellar hypoplasia type 6 (Concept Id: C1969084)
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<!--
UID=370596
ConceptID=C1969084
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Pontocerebellar hypoplasia type 6<span class="h1sub">(PCH6)</span></div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>370596</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1969084</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality; Disease or Syndrome</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonyms:</td>
<td>Encephalopathy fatal infantile with mitochondrial respiratory chain defects; PCH6</td></tr>
<tr><td><span class="bold">SNOMED CT: </span></td>
<td>Congenital pontocerebellar hypoplasia type 6 (718606005); Pontocerebellar hypoplasia type 6 (718606005); PCH6 - pontocerebellar hypoplasia type 6 (718606005); Fatal infantile encephalopathy with mitochondrial respiratory chain defect (718606005)</td></tr>
<tr><td>Modes of inheritance:</td>
<td>
<div class="divPopper rprt" id="moi_141025"><div><strong>Autosomal recessive inheritance</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>141025</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0441748</a></dd><dt><span class="dotprefix"></span></dt><dd>Intellectual Product</dd></dl></div></div></div>
<div class="spaceAbove">Source: Orphanet</div>
<div class="spaceAbove">A mode of inheritance that is observed for traits related to a gene encoded on one of the autosomes (i.e., the human chromosomes 1-22) in which a trait manifests in individuals with two pathogenic alleles, either homozygotes (two copies of the same mutant allele) or compound heterozygotes (whereby each copy of a gene has a distinct mutant allele).</div></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#moi_141025" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive inheritance</a><span> (Orphanet)</span></div></td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td><a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#target-gene-loc">Gene (location):<img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a><div class="display-none" id="target-gene-loc">
Gene(s) directly associated with<br />
this condition or phenotype.</div></td>
<td><a target="_blank" title="RARS2 - ID: 57038 - NCBI Gene" href="/gene/57038" class="medgenPMinfo">RARS2</a> (6q15)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>Monarch Initiative:</td>
<td><a href="https://monarchinitiative.org/disease/MONDO:0012683" target="_blank">MONDO:0012683</a></td></tr>
<tr><td>OMIM<span class="superscript">®</span>:</td>
<td><a href="https://omim.org/entry/611523" target="_blank">611523</a></td></tr>
<tr><td>Orphanet:</td>
<td><a target="_blank" title="Orphanet: The portal for rare diseases and orphan drugs" href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&amp;Expert=166073">ORPHA166073</a></td></tr></tbody></table></div><div class="rprt-body jig-ncbiinpagenav" data-jigconfig="smoothScroll: false, gotoTopLink: true, gotoTopLinkText: '', gotoTopLinkAttrs: {'title': 'Go to the top of the page'},allHeadingLevels: ['h1'], topOfPageTOC: true, tocId: 'my-toc'"><div id="rprt-tabs-1" class="rprt-tab"><div id="tb-termsProp-1"><div class="leftCol mgCol"><div>
<div class="portlet mgSection" id="ID_100">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Definition">Definition</h1><a sid="100" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">Pontocerebellar hypoplasia (PCH) is a heterogeneous group of disorders characterized by an abnormally small cerebellum and brainstem and associated with severe developmental delay (Edvardson et al., 2007).&#13; For a phenotypic description and a discussion of genetic heterogeneity of PCH, see PCH1 (607596). [from <a title="Online Mendelian Inheritance in Man" href="http://www.omim.org" class="defSource" target="_blank">OMIM</a>]</div>
</div>
<div class="portlet mgSection" id="ID_102">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Clinical_features">Clinical features</h1><a sid="102" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat"><strong>From HPO</strong><br />
<div class="divPopper rprt" id="clin_746019"><div><strong>Failure to thrive</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>746019</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2315100</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Failure to thrive (FTT) refers to a child whose physical growth is substantially below the norm.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/746019">Feature record</a> | <a href="/medgen?term=%22Failure%20to%20thrive%22%5BClinical%20Features%5D%20OR%20746019%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_65429"><div><strong>Feeding difficulties</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>65429</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0232466</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Impaired ability to eat related to problems gathering food and getting ready to suck, chew, or swallow it.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/65429">Feature record</a> | <a href="/medgen?term=%22Feeding%20difficulties%22%5BClinical%20Features%5D%20OR%2065429%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_1368658"><div><strong>Gastroesophageal reflux</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1368658</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4317146</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A condition in which the stomach contents leak backwards from the stomach into the esophagus through the lower esophageal sphincter.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1368658">Feature record</a> | <a href="/medgen?term=%22Gastroesophageal%20reflux%22%5BClinical%20Features%5D%20OR%201368658%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_7310"><div><strong>Lethargy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>7310</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0023380</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">A state of fatigue, either physical or mental slowness and sluggishness, with difficulties in initiating or performing simple tasks. Distinguished from apathy which implies indifference and a lack of desire or interest in the task. A person with lethargy may have the desire, but not the energy to engage in personal or socially relevant tasks.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/7310">Feature record</a> | <a href="/medgen?term=%22Lethargy%22%5BClinical%20Features%5D%20OR%207310%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_7753"><div><strong>Spasticity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>7753</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0026838</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">A motor disorder characterized by a velocity-dependent increase in tonic stretch reflexes with increased muscle tone, exaggerated (hyperexcitable) tendon reflexes.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/7753">Feature record</a> | <a href="/medgen?term=%22Spasticity%22%5BClinical%20Features%5D%20OR%207753%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_20693"><div><strong>Seizure</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>20693</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0036572</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/20693">Feature record</a> | <a href="/medgen?term=%22Seizure%22%5BClinical%20Features%5D%20OR%2020693%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_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_115963"><div><strong>Generalized-onset seizure</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>115963</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0234533</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A generalized-onset seizure is a type of seizure originating at some point within, and rapidly engaging, bilaterally distributed networks. The networks may include cortical and subcortical structures but not necessarily the entire cortex.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/115963">Feature record</a> | <a href="/medgen?term=%22Generalized-onset%20seizure%22%5BClinical%20Features%5D%20OR%20115963%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_116012"><div><strong>Cerebral atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>116012</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0235946</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Atrophy (wasting, decrease in size of cells or tissue) affecting the cerebrum.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/116012">Feature record</a> | <a href="/medgen?term=%22Cerebral%20atrophy%22%5BClinical%20Features%5D%20OR%20116012%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_196624"><div><strong>Cerebellar atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>196624</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0740279</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cerebellar atrophy is defined as a cerebellum with initially normal structures, in a posterior fossa with normal size, which displays enlarged fissures (interfolial spaces) in comparison to the foliae secondary to loss of tissue. Cerebellar atrophy implies irreversible loss of tissue and result from an ongoing progressive disease until a final stage is reached or a single injury, e.g. an intoxication or infectious event.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/196624">Feature record</a> | <a href="/medgen?term=%22Cerebellar%20atrophy%22%5BClinical%20Features%5D%20OR%20196624%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_257904"><div><strong>Increased CSF lactate</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>257904</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1167918</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Increased concentration of lactate in the cerebrospinal fluid.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/257904">Feature record</a> | <a href="/medgen?term=%22Increased%20CSF%20lactate%22%5BClinical%20Features%5D%20OR%20257904%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_220865"><div><strong>Lower limb spasticity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>220865</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1271100</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Spasticity (velocity-dependent increase in tonic stretch reflexes with increased muscle tone and hyperexcitable tendon reflexes) in the muscles of the lower limbs, hips, and pelvis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/220865">Feature record</a> | <a href="/medgen?term=%22Lower%20limb%20spasticity%22%5BClinical%20Features%5D%20OR%20220865%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_220882"><div><strong>Upper limb spasticity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>220882</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1273957</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/220882">Feature record</a> | <a href="/medgen?term=%22Upper%20limb%20spasticity%22%5BClinical%20Features%5D%20OR%20220882%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_333548"><div><strong>Cerebellar vermis hypoplasia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>333548</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1840379</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Underdevelopment of the vermis of cerebellum.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/333548">Feature record</a> | <a href="/medgen?term=%22Cerebellar%20vermis%20hypoplasia%22%5BClinical%20Features%5D%20OR%20333548%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_340737"><div><strong>Absent speech</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340737</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854882</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Complete lack of development of speech and language abilities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340737">Feature record</a> | <a href="/medgen?term=%22Absent%20speech%22%5BClinical%20Features%5D%20OR%20340737%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_766364"><div><strong>Profound global developmental delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766364</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3553450</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A profound delay in the achievement of motor or mental milestones in the domains of development of a child.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766364">Feature record</a> | <a href="/medgen?term=%22Profound%20global%20developmental%20delay%22%5BClinical%20Features%5D%20OR%20766364%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_870454"><div><strong>Atrophy/Degeneration affecting the brainstem</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>870454</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4024900</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/870454">Feature record</a> | <a href="/medgen?term=%22Atrophy%2FDegeneration%20affecting%20the%20brainstem%22%5BClinical%20Features%5D%20OR%20870454%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_937224"><div><strong>Appendicular spasticity</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>937224</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4313257</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A type of spasticity that affects one or more limbs (arms or legs).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/937224">Feature record</a> | <a href="/medgen?term=%22Appendicular%20spasticity%22%5BClinical%20Features%5D%20OR%20937224%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_1643639"><div><strong>Brain atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1643639</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551584</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Partial or complete wasting (loss) of brain tissue that was once present.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1643639">Feature record</a> | <a href="/medgen?term=%22Brain%20atrophy%22%5BClinical%20Features%5D%20OR%201643639%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_331445"><div><strong>Elbow contracture</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>331445</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1833142</a></dd><dt><span class="dotprefix"></span></dt><dd>Anatomical Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">A limitation in the passive range of motion of the elbow resulting from loss of elasticity in the periarticular tissues owing to structural changes of non-bony tissues, such as muscles, tendons, ligaments, joint capsules or skin.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/331445">Feature record</a> | <a href="/medgen?term=%22Elbow%20contracture%22%5BClinical%20Features%5D%20OR%20331445%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_322809"><div><strong>Poor head control</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>322809</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836038</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Difficulty to maintain correct position of the head while standing or sitting. Infant head lag is observed when the head seems to flop around or lags posteriorly behind the trunk. Several articles have maintained that head lag should be absent by age 3 to 4 months.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/322809">Feature record</a> | <a href="/medgen?term=%22Poor%20head%20control%22%5BClinical%20Features%5D%20OR%20322809%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_340542"><div><strong>Progressive microcephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340542</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850456</a></dd><dt><span class="dotprefix"></span></dt><dd>Anatomical Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Progressive microcephaly is diagnosed when the head circumference falls progressively behind age- and gender-dependent norms.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340542">Feature record</a> | <a href="/medgen?term=%22Progressive%20microcephaly%22%5BClinical%20Features%5D%20OR%20340542%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_342959"><div><strong>Axial hypotonia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342959</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1853743</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Muscular hypotonia (abnormally low muscle tone) affecting the musculature of the trunk.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342959">Feature record</a> | <a href="/medgen?term=%22Axial%20hypotonia%22%5BClinical%20Features%5D%20OR%20342959%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_346841"><div><strong>Generalized hypotonia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>346841</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1858120</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Generalized muscular hypotonia (abnormally low muscle tone).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/346841">Feature record</a> | <a href="/medgen?term=%22Generalized%20hypotonia%22%5BClinical%20Features%5D%20OR%20346841%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1644158"><div><strong>Microcephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1644158</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4551563</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Head circumference below 2 standard deviations below the mean for age and gender.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1644158">Feature record</a> | <a href="/medgen?term=%22Microcephaly%22%5BClinical%20Features%5D%20OR%201644158%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_2009"><div><strong>Apnea</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>2009</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0003578</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">Lack of breathing with no movement of the respiratory muscles and no exchange of air in the lungs. This term refers to a disposition to have recurrent episodes of apnea rather than to a single event.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/2009">Feature record</a> | <a href="/medgen?term=%22Apnea%22%5BClinical%20Features%5D%20OR%202009%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_332209"><div><strong>Increased circulating lactate concentration</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>332209</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836440</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Abnormally increased level of blood lactate (2-hydroxypropanoic acid). Lactate is produced from pyruvate by lactate dehydrogenase during normal metabolism. The terms lactate and lactic acid are often used interchangeably but lactate (the component measured in blood) is strictly a weak base whereas lactic acid is the corresponding acid. Lactic acidosis is often used clinically to describe elevated lactate but should be reserved for cases where there is a corresponding acidosis (pH below 7.35).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/332209">Feature record</a> | <a href="/medgen?term=%22Increased%20circulating%20lactate%20concentration%22%5BClinical%20Features%5D%20OR%20332209%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_278045"><div><strong>Narrow palate</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>278045</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1398312</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Width of the palate more than 2 SD below the mean (objective) or apparently decreased palatal width (subjective).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/278045">Feature record</a> | <a href="/medgen?term=%22Narrow%20palate%22%5BClinical%20Features%5D%20OR%20278045%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_326956"><div><strong>Narrow forehead</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>326956</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839758</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Width of the forehead or distance between the frontotemporales is more than two standard deviations below the mean (objective); or apparently narrow intertemporal region (subjective).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/326956">Feature record</a> | <a href="/medgen?term=%22Narrow%20forehead%22%5BClinical%20Features%5D%20OR%20326956%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_343051"><div><strong>Prominent nasal bridge</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>343051</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1854113</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Anterior positioning of the nasal root in comparison to the usual positioning for age.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/343051">Feature record</a> | <a href="/medgen?term=%22Prominent%20nasal%20bridge%22%5BClinical%20Features%5D%20OR%20343051%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_473112"><div><strong>Deeply set eye</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>473112</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0423224</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">An eye that is more deeply recessed into the plane of the face than is typical.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/473112">Feature record</a> | <a href="/medgen?term=%22Deeply%20set%20eye%22%5BClinical%20Features%5D%20OR%20473112%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_393796"><div><strong>Decreased activity of mitochondrial complex I</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>393796</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2677650</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A reduction in the activity of the mitochondrial respiratory chain complex I, which is part of the electron transport chain in mitochondria.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/393796">Feature record</a> | <a href="/medgen?term=%22Decreased%20activity%20of%20mitochondrial%20complex%20I%22%5BClinical%20Features%5D%20OR%20393796%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_460434"><div><strong>Decreased activity of mitochondrial complex III</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>460434</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3149083</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A reduction in the activity of the mitochondrial respiratory chain complex III, which is part of the electron transport chain in mitochondria.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/460434">Feature record</a> | <a href="/medgen?term=%22Decreased%20activity%20of%20mitochondrial%20complex%20III%22%5BClinical%20Features%5D%20OR%20460434%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_866520"><div><strong>Decreased activity of mitochondrial complex IV</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>866520</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4020800</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A reduction in the activity of the mitochondrial respiratory chain complex IV, which is part of the electron transport chain in mitochondria.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/866520">Feature record</a> | <a href="/medgen?term=%22Decreased%20activity%20of%20mitochondrial%20complex%20IV%22%5BClinical%20Features%5D%20OR%20866520%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">Abnormal cellular phenotype</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_393796" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Decreased activity of mitochondrial complex I</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_460434" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Decreased activity of mitochondrial complex III</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_866520" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Decreased activity of mitochondrial complex IV</a></span></li></ul></li><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_326956" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Narrow forehead</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_278045" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Narrow palate</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_343051" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Prominent nasal bridge</a></span></li></ul></li><li><span class="TLline">Abnormality of metabolism/homeostasis</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_332209" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Increased circulating lactate concentration</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_65429" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Feeding difficulties</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1368658" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Gastroesophageal reflux</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 eye</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_473112" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Deeply set eye</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_342959" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Axial hypotonia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_331445" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Elbow contracture</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_346841" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Generalized hypotonia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_10133" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypotonia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1644158" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_322809" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Poor head control</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_340542" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Progressive microcephaly</a></span></li></ul></li><li><span class="TLline">Abnormality of the nervous system</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_340737" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Absent speech</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_937224" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Appendicular spasticity</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_870454" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Atrophy/Degeneration affecting the brainstem</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1643639" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Brain atrophy</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_196624" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar atrophy</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_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_333548" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebellar vermis hypoplasia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_116012" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Cerebral atrophy</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_115963" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Generalized-onset seizure</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_257904" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Increased CSF lactate</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_7310" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lethargy</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_220865" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Lower limb spasticity</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_766364" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Profound global developmental delay</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_20693" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Seizure</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_7753" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Spasticity</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_220882" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Upper limb spasticity</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_2009" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Apnea</a></span></li></ul></li><li><span class="TLline">Growth abnormality</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_746019" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Failure to thrive</a></span></li></ul></li></ul></div></div>
</div>
<div class="portlet mgSection" id="ID_118">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Term_Hierarchy">Term Hierarchy</h1><a sid="118" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln HierarchyGTR"><div class="jig-ncbitabs"><ul><li><a href="#tabGTR">GTR</a></li><li><a href="#tabMGEN">MeSH</a></li><li><a href="#tabORDO">Orphanet</a></li></ul><div id="tabGTR"><div class="search_result"><div class="rprts"><div class="chiclet_legend"><span class="chiclet_list" style="position:static;"><span title="Clinical test" class="chiclet Ccolor round">C</span><span>Clinical test,  </span><span title="Research test" class="chiclet Rcolor round">R</span><span>Research test,  </span><span title="OMIM" class="chiclet Ocolor ">O</span><span>OMIM,  </span><span title="GeneReview" class="chiclet Gcolor">G</span><span><em>GeneReviews</em>,  </span><span title="ClinVar" class="chiclet Vcolor">V</span><span>ClinVar  </span></span></div><div id="hierarchy" class="margin_t1"><div class="ds_tree"><ul><li class="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="TLclosed"><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"><a href="/medgen/335969" ref="tree=GTR&amp;ncbi_uid=335969&amp;link_uid=335969" title="View MedGen record for 'Pontocerebellar hypoplasia type 1A'">Pontocerebellar hypoplasia type 1A</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=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="matched_ds"><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">Pontocerebellar hypoplasia type 6</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/1672489" ref="tree=MeSH" title="MedGen record for Mitochondrial disorder due to a defect in mitochondrial protein synthesis">Mitochondrial disorder due to a defect in mitochondrial protein synthesis</a></span><ul><li><span class="matched_ds">Pontocerebellar hypoplasia type 6</span></li></ul></li></ul></div></div><div id="tabORDO">Follow <a target="_blank" href="http://www.orpha.net/consor/cgi-bin/Disease_Classif.php?lng=EN&amp;data_id=156&amp;PatId=17610&amp;search=Disease_Classif_Simple&amp;new=1" class="ital bold">this link</a> to review classifications for <span class="ital">Pontocerebellar hypoplasia type 6</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/30921410">Targeting ferroptosis: A novel therapeutic strategy for the treatment of mitochondrial disease-related epilepsy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kahn-Kirby AH,
Amagata A,
Maeder CI,
Mei JJ,
Sideris S,
Kosaka Y,
Hinman A,
Malone SA,
Bruegger JJ,
Wang L,
Kim V,
Shrader WD,
Hoff KG,
Latham JC,
Ashley EA,
Wheeler MT,
Bertini E,
Carrozzo R,
Martinelli D,
Dionisi-Vici C,
Chapman KA,
Enns GM,
Gahl W,
Wolfe L,
Saneto RP,
Johnson SC,
Trimmer JK,
Klein MB,
Holst CR</span><br />
<span class="medgenPMjournal">PLoS One</span>
2019;14(3):e0214250.
Epub 2019 Mar 28
doi: 10.1371/journal.pone.0214250.
<span class="bold">PMID: </span><a href="/pubmed/30921410" target="_blank">30921410</a><a href="/pmc/articles/PMC6438538" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22pontocerebellar%20hypoplasia%20type%206%22%5Btiab%3A~0%5D)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">See all (1)</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/27061686">RARS2 mutations in a sibship with infantile spasms.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ngoh A,
Bras J,
Guerreiro R,
Meyer E,
McTague A,
Dawson E,
Mankad K,
Gunny R,
Clayton P,
Mills PB,
Thornton R,
Lai M,
Forsyth R,
Kurian MA</span><br />
<span class="medgenPMjournal">Epilepsia</span>
2016 May;57(5):e97-e102.
Epub 2016 Apr 8
doi: 10.1111/epi.13358.
<span class="bold">PMID: </span><a href="/pubmed/27061686" target="_blank">27061686</a><a href="/pmc/articles/PMC4864753" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25289895">Neuropathologic features of pontocerebellar hypoplasia type 6.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Joseph JT,
Innes AM,
Smith AC,
Vanstone MR,
Schwartzentruber JA,
Bulman DE,
Majewski J,
Daza RA,
Hevner RF,
Michaud J,
Boycott KM;
FORGE Canada Consortium</span><br />
<span class="medgenPMjournal">J Neuropathol Exp Neurol</span>
2014 Nov;73(11):1009-25.
doi: 10.1097/NEN.0000000000000123.
<span class="bold">PMID: </span><a href="/pubmed/25289895" target="_blank">25289895</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22569581">Pontocerebellar hypoplasia type 6 caused by mutations in RARS2: definition of the clinical spectrum and molecular findings in five patients.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Cassandrini D,
Cilio MR,
Bianchi M,
Doimo M,
Balestri M,
Tessa A,
Rizza T,
Sartori G,
Meschini MC,
Nesti C,
Tozzi G,
Petruzzella V,
Piemonte F,
Bisceglia L,
Bruno C,
Dionisi-Vici C,
D'Amico A,
Fattori F,
Carrozzo R,
Salviati L,
Santorelli FM,
Bertini E</span><br />
<span class="medgenPMjournal">J Inherit Metab Dis</span>
2013 Jan;36(1):43-53.
Epub 2012 May 8
doi: 10.1007/s10545-012-9487-9.
<span class="bold">PMID: </span><a href="/pubmed/22569581" target="_blank">22569581</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%206%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 (6)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/35468344">Novel RARS2 Variants: Updating the Diagnosis and Pathogenesis of Pontocerebellar Hypoplasia Type 6.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zhang Y,
Yu Y,
Zhao X,
Xu Y,
Chen L,
Li N,
Yao R,
Wang J,
Yu T</span><br />
<span class="medgenPMjournal">Pediatr Neurol</span>
2022 Jun;131:30-41.
Epub 2022 Apr 15
doi: 10.1016/j.pediatrneurol.2022.04.002.
<span class="bold">PMID: </span><a href="/pubmed/35468344" target="_blank">35468344</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34930889">A Neonate with a Diagnosis of Pontocerebellar Hypoplasia Type 6 Treated with Biotin and Developed Biotin Interference with Laboratory Thyroid Function Tests.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nagafuji M,
Hitaka D,
Iwabuchi A,
Miyazono Y,
Takada H</span><br />
<span class="medgenPMjournal">Am J Case Rep</span>
2021 Dec 21;22:e934417.
doi: 10.12659/AJCR.934417.
<span class="bold">PMID: </span><a href="/pubmed/34930889" target="_blank">34930889</a><a href="/pmc/articles/PMC8711254" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25289895">Neuropathologic features of pontocerebellar hypoplasia type 6.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Joseph JT,
Innes AM,
Smith AC,
Vanstone MR,
Schwartzentruber JA,
Bulman DE,
Majewski J,
Daza RA,
Hevner RF,
Michaud J,
Boycott KM;
FORGE Canada Consortium</span><br />
<span class="medgenPMjournal">J Neuropathol Exp Neurol</span>
2014 Nov;73(11):1009-25.
doi: 10.1097/NEN.0000000000000123.
<span class="bold">PMID: </span><a href="/pubmed/25289895" target="_blank">25289895</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22569581">Pontocerebellar hypoplasia type 6 caused by mutations in RARS2: definition of the clinical spectrum and molecular findings in five patients.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Cassandrini D,
Cilio MR,
Bianchi M,
Doimo M,
Balestri M,
Tessa A,
Rizza T,
Sartori G,
Meschini MC,
Nesti C,
Tozzi G,
Petruzzella V,
Piemonte F,
Bisceglia L,
Bruno C,
Dionisi-Vici C,
D'Amico A,
Fattori F,
Carrozzo R,
Salviati L,
Santorelli FM,
Bertini E</span><br />
<span class="medgenPMjournal">J Inherit Metab Dis</span>
2013 Jan;36(1):43-53.
Epub 2012 May 8
doi: 10.1007/s10545-012-9487-9.
<span class="bold">PMID: </span><a href="/pubmed/22569581" target="_blank">22569581</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><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Pontocerebellar%20hypoplasia%20type%206%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 (11)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/37344844">A non-coding variant in the Kozak sequence of RARS2 strongly decreases protein levels and causes pontocerebellar hypoplasia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nicolle R,
Altin N,
Siquier-Pernet K,
Salignac S,
Blanc P,
Munnich A,
Bole-Feysot C,
Malan V,
Caron B,
Nitschké P,
Desguerre I,
Boddaert N,
Rio M,
Rausell A,
Cantagrel V</span><br />
<span class="medgenPMjournal">BMC Med Genomics</span>
2023 Jun 21;16(1):143.
doi: 10.1186/s12920-023-01582-z.
<span class="bold">PMID: </span><a href="/pubmed/37344844" target="_blank">37344844</a><a href="/pmc/articles/PMC10283289" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35468344">Novel RARS2 Variants: Updating the Diagnosis and Pathogenesis of Pontocerebellar Hypoplasia Type 6.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zhang Y,
Yu Y,
Zhao X,
Xu Y,
Chen L,
Li N,
Yao R,
Wang J,
Yu T</span><br />
<span class="medgenPMjournal">Pediatr Neurol</span>
2022 Jun;131:30-41.
Epub 2022 Apr 15
doi: 10.1016/j.pediatrneurol.2022.04.002.
<span class="bold">PMID: </span><a href="/pubmed/35468344" target="_blank">35468344</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26083569">Neuropathologic Characterization of Pontocerebellar Hypoplasia Type 6 Associated With Cardiomyopathy and Hydrops Fetalis and Severe Multisystem Respiratory Chain Deficiency due to Novel RARS2 Mutations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Lax NZ,
Alston CL,
Schon K,
Park SM,
Krishnakumar D,
He L,
Falkous G,
Ogilvy-Stuart A,
Lees C,
King RH,
Hargreaves IP,
Brown GK,
McFarland R,
Dean AF,
Taylor RW</span><br />
<span class="medgenPMjournal">J Neuropathol Exp Neurol</span>
2015 Jul;74(7):688-703.
doi: 10.1097/NEN.0000000000000209.
<span class="bold">PMID: </span><a href="/pubmed/26083569" target="_blank">26083569</a><a href="/pmc/articles/PMC4470523" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22569581">Pontocerebellar hypoplasia type 6 caused by mutations in RARS2: definition of the clinical spectrum and molecular findings in five patients.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Cassandrini D,
Cilio MR,
Bianchi M,
Doimo M,
Balestri M,
Tessa A,
Rizza T,
Sartori G,
Meschini MC,
Nesti C,
Tozzi G,
Petruzzella V,
Piemonte F,
Bisceglia L,
Bruno C,
Dionisi-Vici C,
D'Amico A,
Fattori F,
Carrozzo R,
Salviati L,
Santorelli FM,
Bertini E</span><br />
<span class="medgenPMjournal">J Inherit Metab Dis</span>
2013 Jan;36(1):43-53.
Epub 2012 May 8
doi: 10.1007/s10545-012-9487-9.
<span class="bold">PMID: </span><a href="/pubmed/22569581" target="_blank">22569581</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><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Pontocerebellar%20hypoplasia%20type%206%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 (6)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/37344844">A non-coding variant in the Kozak sequence of RARS2 strongly decreases protein levels and causes pontocerebellar hypoplasia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nicolle R,
Altin N,
Siquier-Pernet K,
Salignac S,
Blanc P,
Munnich A,
Bole-Feysot C,
Malan V,
Caron B,
Nitschké P,
Desguerre I,
Boddaert N,
Rio M,
Rausell A,
Cantagrel V</span><br />
<span class="medgenPMjournal">BMC Med Genomics</span>
2023 Jun 21;16(1):143.
doi: 10.1186/s12920-023-01582-z.
<span class="bold">PMID: </span><a href="/pubmed/37344844" target="_blank">37344844</a><a href="/pmc/articles/PMC10283289" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35468344">Novel RARS2 Variants: Updating the Diagnosis and Pathogenesis of Pontocerebellar Hypoplasia Type 6.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zhang Y,
Yu Y,
Zhao X,
Xu Y,
Chen L,
Li N,
Yao R,
Wang J,
Yu T</span><br />
<span class="medgenPMjournal">Pediatr Neurol</span>
2022 Jun;131:30-41.
Epub 2022 Apr 15
doi: 10.1016/j.pediatrneurol.2022.04.002.
<span class="bold">PMID: </span><a href="/pubmed/35468344" target="_blank">35468344</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26083569">Neuropathologic Characterization of Pontocerebellar Hypoplasia Type 6 Associated With Cardiomyopathy and Hydrops Fetalis and Severe Multisystem Respiratory Chain Deficiency due to Novel RARS2 Mutations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Lax NZ,
Alston CL,
Schon K,
Park SM,
Krishnakumar D,
He L,
Falkous G,
Ogilvy-Stuart A,
Lees C,
King RH,
Hargreaves IP,
Brown GK,
McFarland R,
Dean AF,
Taylor RW</span><br />
<span class="medgenPMjournal">J Neuropathol Exp Neurol</span>
2015 Jul;74(7):688-703.
doi: 10.1097/NEN.0000000000000209.
<span class="bold">PMID: </span><a href="/pubmed/26083569" target="_blank">26083569</a><a href="/pmc/articles/PMC4470523" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24047924">Subdural effusions and lack of early pontocerebellar hypoplasia in siblings with RARS2 mutations.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kastrissianakis K,
Anand G,
Quaghebeur G,
Price S,
Prabhakar P,
Marinova J,
Brown G,
McShane T</span><br />
<span class="medgenPMjournal">Arch Dis Child</span>
2013 Dec;98(12):1004-7.
Epub 2013 Sep 18
doi: 10.1136/archdischild-2013-304308.
<span class="bold">PMID: </span><a href="/pubmed/24047924" target="_blank">24047924</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Pontocerebellar%20hypoplasia%20type%206%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 (4)</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_head mgSectionHead ui-widget-header"><h1 class="nl" id="Genetic_Testing_Registry">Genetic Testing Registry</h1><a sid="106" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C1969084%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (41)</a></li>
<li><a href="/gtr/tests?term=C1969084%5bDISCUI%5d&amp;filter=method%3A1%5F2" target="_blank">Enzyme assay (2)</a></li>
<li><a href="/gtr/tests?term=C1969084%5bDISCUI%5d&amp;filter=method%3A2%5F12" target="_blank">Microsatellite instability testing (MSI) (1)</a></li>
<li><a href="/gtr/tests?term=C1969084%5bDISCUI%5d&amp;filter=method%3A2%5F18" target="_blank">Mutation scanning of select exons (1)</a></li>
<li><a href="/gtr/tests?term=C1969084%5bDISCUI%5d&amp;test_type=Research" target="_blank">Research (1)</a></li>
<li><a href="/gtr/tests?term=C1969084%5bDISCUI%5d&amp;filter=method%3A2%5F9" target="_blank">Sequence analysis of select exons (7)</a></li>
<li><a href="/gtr/tests?term=C1969084%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (59)</a></li>
<li><a href="/gtr/tests?term=C1969084%5bDISCUI%5d&amp;filter=method%3A2%5F19" target="_blank">Targeted variant analysis (18)</a></li>
<li class="portletSeeAll portletSeeAllPad"><total><a href="/gtr/tests?term=C1969084%5bDISCUI%5d" target="_blank">See all (68)</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=611523" target="_blank">OMIM</a></li><li><a href="http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Expert=166073" target="_blank">Orphanet</a></li><li><a href="https://clinicaltrials.gov/search?cond=Pontocerebellar%20hypoplasia%20type%206" target="_blank">ClinicalTrials.gov</a></li></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Practice_guidelines">Practice guidelines</h1><a sid="121" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul class="a_poppers"><li><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22pontocerebellar%20hypoplasia%20type%206%22%5Btiab%3A~0%5D)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">PubMed</a><div class="help-popup">See practice and clinical guidelines in PubMed. The search results may include broader topics and may not capture all published guidelines. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div></li></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Molecular_resources">Molecular resources</h1><a sid="115" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="http://www.omim.org/search?index=entry&amp;start=1&amp;limit=10&amp;sort=score%20desc&amp;field=number&amp;search=611524" target="_blank">OMIM</a></li><li><a href="/clinvar/?term=57038[geneid]" target="_blank">View RARS2 variations in ClinVar</a></li><li><a href="/nuccore/201862389" target="_blank">RefSeqGene</a></li><li><a href="https://catalog.coriell.org/Search?q=611523" target="_blank">Coriell Institute for Medical Research</a></li></ul></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Consumer_resources">Consumer resources</h1><a sid="116" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul><li><a href="http://www.diseaseinfosearch.org/Pontocerebellar+hypoplasia+type+6/5868" target="_blank">Genetic Alliance</a></li><li><a href="https://www.malacards.org/card/pontocerebellar_hypoplasia_type_6_2" target="_blank">MalaCards</a></li><li><a href="https://vsearch.nlm.nih.gov/vivisimo/cgi-bin/query-meta?v:project=medlineplus&amp;query=Pontocerebellar%20hypoplasia%20type%206" target="_blank">MedlinePlus</a></li><li><a href="https://rarediseases.info.nih.gov/diseases/10710/disease" target="_blank">NCATS Office of Rare Diseases Research (GARD)</a></li></ul></div>
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<h3>Reviews</h3>
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