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<meta name="keywords" content="C5436747, disease or syndrome, exoc8, nedmisb, neurodevelopmental disorder with microcephaly, seizures, and brain atrophy, 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="Neurodevelopmental disorder with microcephaly, seizures, and brain atrophy (NEDMISB) is an autosomal recessive disorder characterized by severe global developmental delay, developmental regression with loss of milestones, severe microcephaly, and brain abnormalities, primarily cerebral atrophy and hypoplasia of the corpus callosum. Affected individuals develop seizures in the first year of life; eventually they are unable to sit, feed, or communicate, and may be unresponsive to stimuli. Other features include muscle weakness, spasticity with hyperreflexia, irritability, and contractures (Coulter et al., 2020)." /><meta name="robots" content="index,nofollow,noarchive" />
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<!--
UID=1755716
ConceptID=C5436747
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Neurodevelopmental disorder with microcephaly, seizures, and brain atrophy<span class="h1sub">(NEDMISB)</span></div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1755716</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information."><span class="highlight" style="background-color:">C5436747</span></a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonyms:</td>
<td>NEDMISB; NEURODEVELOPMENTAL DISORDER WITH MICROCEPHALY, SEIZURES, AND BRAIN ATROPHY</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td><a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#target-gene-loc">Gene (location):<img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a><div class="display-none" id="target-gene-loc">
Gene(s) directly associated with<br />
this condition or phenotype.</div></td>
<td><a target="_blank" title="EXOC8 - ID: 149371 - NCBI Gene" href="/gene/149371" class="medgenPMinfo">EXOC8</a> (1q42.2)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>Monarch Initiative:</td>
<td><a href="https://monarchinitiative.org/disease/MONDO:0033662" target="_blank">MONDO:0033662</a></td></tr>
<tr><td>OMIM<span class="superscript">®</span>:</td>
<td><a href="https://omim.org/entry/619076" target="_blank">619076</a></td></tr>
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<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">Neurodevelopmental disorder with microcephaly, seizures, and brain atrophy (NEDMISB) is an autosomal recessive disorder characterized by severe global developmental delay, developmental regression with loss of milestones, severe microcephaly, and brain abnormalities, primarily cerebral atrophy and hypoplasia of the corpus callosum. Affected individuals develop seizures in the first year of life; eventually they are unable to sit, feed, or communicate, and may be unresponsive to stimuli. Other features include muscle weakness, spasticity with hyperreflexia, irritability, and contractures (Coulter et al., 2020). [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_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_87376"><div><strong>Choroid plexus cyst</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>87376</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0338597</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A cyst occurring within the choroid plexus within a cerebral ventricle.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/87376">Feature record</a> | <a href="/medgen?term=%22Choroid%20plexus%20cyst%22%5BClinical%20Features%5D%20OR%2087376%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_138005"><div><strong>Hypoplasia of the corpus callosum</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>138005</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0344482</a></dd><dt><span class="dotprefix"></span></dt><dd>Congenital Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Underdevelopment of the corpus callosum.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/138005">Feature record</a> | <a href="/medgen?term=%22Hypoplasia%20of%20the%20corpus%20callosum%22%5BClinical%20Features%5D%20OR%20138005%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_195766"><div><strong>Hypsarrhythmia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>195766</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0684276</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Hypsarrhythmia is abnormal interictal high amplitude waves and a background of irregular spikes. There is continuous (during wakefulness), high-amplitude (&gt;200 Hz), generalized polymorphic slowing with no organized background and multifocal spikes demonstrated by electroencephalography (EEG).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/195766">Feature record</a> | <a href="/medgen?term=%22Hypsarrhythmia%22%5BClinical%20Features%5D%20OR%20195766%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_332436"><div><strong>Severe global developmental delay</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>332436</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837397</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A severe 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/332436">Feature record</a> | <a href="/medgen?term=%22Severe%20global%20developmental%20delay%22%5BClinical%20Features%5D%20OR%20332436%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_397841"><div><strong>Irritability</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>397841</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2700617</a></dd><dt><span class="dotprefix"></span></dt><dd>Mental Process</dd></dl></div></div></div>
<div class="spaceAbove">A proneness to anger, i.e., a tendency to become easily bothered or annoyed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen?term=%22Irritability%22%5BClinical%20Features%5D%20OR%20397841%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_867393"><div><strong>Delayed CNS myelination</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>867393</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4021758</a></dd><dt><span class="dotprefix"></span></dt><dd>Anatomical Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">Delayed myelination in the central nervous system.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/867393">Feature record</a> | <a href="/medgen?term=%22Delayed%20CNS%20myelination%22%5BClinical%20Features%5D%20OR%20867393%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1385980"><div><strong>Myoclonic seizure</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1385980</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4317123</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">A myoclonic seizure is a type of motor seizure characterized by sudden, brief (&lt;100 ms) involuntary single or multiple contraction of muscles or muscle groups of variable topography (axial, proximal limb, distal). Myoclonus is less regularly repetitive and less sustained than is clonus.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1385980">Feature record</a> | <a href="/medgen?term=%22Myoclonic%20seizure%22%5BClinical%20Features%5D%20OR%201385980%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_1368929"><div><strong>Bilateral tonic-clonic seizure with generalized onset</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1368929</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4476643</a></dd><dt><span class="dotprefix"></span></dt><dd>Sign or Symptom</dd></dl></div></div></div>
<div class="spaceAbove">A bilateral tonic-clonic seizure with generalized onset is a type of bilateral tonic-clonic seizure characterized by generalized onset; these seizures rapidly engage networks in both hemispheres at the start of the seizure.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1368929">Feature record</a> | <a href="/medgen?term=%22Bilateral%20tonic-clonic%20seizure%20with%20generalized%20onset%22%5BClinical%20Features%5D%20OR%201368929%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_1163"><div><strong>Craniosynostosis syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1163</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0010278</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Craniosynostosis refers to the premature closure of the cranial sutures. Primary craniosynostosis refers to the closure of one or more sutures due to abnormalities in skull development, and secondary craniosynostosis results from failure of brain growth.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1163">Feature record</a> | <a href="/medgen?term=%22Craniosynostosis%20syndrome%22%5BClinical%20Features%5D%20OR%201163%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_10132"><div><strong>Hypertonia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>10132</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0026826</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A condition in which there is increased muscle tone so that arms or legs, for example, are stiff and difficult to move.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/10132">Feature record</a> | <a href="/medgen?term=%22Hypertonia%22%5BClinical%20Features%5D%20OR%2010132%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_57735"><div><strong>Muscle weakness</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>57735</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0151786</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Reduced strength of muscles.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/57735">Feature record</a> | <a href="/medgen?term=%22Muscle%20weakness%22%5BClinical%20Features%5D%20OR%2057735%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_83069"><div><strong>Flexion contracture</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>83069</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0333068</a></dd><dt><span class="dotprefix"></span></dt><dd>Anatomical Abnormality</dd></dl></div></div></div>
<div class="spaceAbove">A flexion contracture is a bent (flexed) joint that cannot be straightened actively or passively. It is thus a chronic loss of joint motion due to structural changes in muscle, tendons, ligaments, or skin that prevents normal movement of joints.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/83069">Feature record</a> | <a href="/medgen?term=%22Flexion%20contracture%22%5BClinical%20Features%5D%20OR%2083069%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_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_116087"><div><strong>Round face</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>116087</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0239479</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">The facial appearance is more circular than usual as viewed from the front.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/116087">Feature record</a> | <a href="/medgen?term=%22Round%20face%22%5BClinical%20Features%5D%20OR%20116087%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_342955"><div><strong>Long eyelashes</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342955</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1853738</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Mid upper eyelash length &gt;10 mm or increased length of the eyelashes (subjective).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342955">Feature record</a> | <a href="/medgen?term=%22Long%20eyelashes%22%5BClinical%20Features%5D%20OR%20342955%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_2287"><div><strong>Ptosis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>2287</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0005745</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The upper eyelid margin is positioned 3 mm or more lower than usual and covers the superior portion of the iris (objective); or, the upper lid margin obscures at least part of the pupil (subjective).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/2287">Feature record</a> | <a href="/medgen?term=%22Ptosis%22%5BClinical%20Features%5D%20OR%202287%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_4613"><div><strong>Exotropia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>4613</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0015310</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A form of strabismus with one or both eyes deviated outward.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/4613">Feature record</a> | <a href="/medgen?term=%22Exotropia%22%5BClinical%20Features%5D%20OR%204613%5Buid%5D">Search on this feature</a></div></div>
<div class="divPopper rprt" id="clin_108218"><div><strong>Optic disc pallor</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>108218</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0554970</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">A pale yellow discoloration of the optic disc (the area of the optic nerve head in the retina). The optic disc normally has a pinkish hue with a central yellowish depression.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/108218">Feature record</a> | <a href="/medgen?term=%22Optic%20disc%20pallor%22%5BClinical%20Features%5D%20OR%20108218%5Buid%5D">Search on this feature</a></div></div><div class="TreeLite" data-jigconfig="closed: 1"><div class="concept-def"><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().openAll(); return false;">Show all</a><a class="small" href="#" onclick="jQuery(&quot;.TreeLite&quot;,&quot;#ID_102&quot;).TreeLite().closeAll(); return false;">Hide all</a></div><ul><li><span class="TLline">Abnormality of head or neck</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_116087" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Round face</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_4613" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Exotropia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_108218" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Optic disc pallor</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_2287" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ptosis</a></span></li></ul></li><li><span class="TLline">Abnormality of the integument</span><ul><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_342955" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Long eyelashes</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_1163" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Craniosynostosis syndrome</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_83069" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Flexion contracture</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_10132" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypertonia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_10133" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypotonia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1644158" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_57735" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscle weakness</a></span></li></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_1368929" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Bilateral tonic-clonic seizure with generalized onset</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_87376" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Choroid plexus cyst</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_867393" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Delayed CNS myelination</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_138005" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypoplasia of the corpus callosum</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_195766" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypsarrhythmia</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_397841" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Irritability</a></span></li><li class="TLline">
<span class="TLline"><a title="click for more information" class="jig-ncbipopper" href="#clin_1385980" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myoclonic seizure</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_332436" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Severe global developmental delay</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></ul></li></ul></div></div>
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<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/35322404">El-Hattab-Alkuraya syndrome caused by biallelic WDR45B pathogenic variants: Further delineation of the phenotype and genotype.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Almannai M,
Marafi D,
Abdel-Salam GMH,
Zaki MS,
Duan R,
Calame D,
Herman I,
Levesque F,
Elbendary HM,
Hegazy I,
Chung WK,
Kavus H,
Saeidi K,
Maroofian R,
AlHashim A,
Al-Otaibi A,
Al Madhi A,
Abou Al-Seood HM,
Alasmari A,
Houlden H,
Gleeson JG,
Hunter JV,
Posey JE,
Lupski JR,
El-Hattab AW</span><br />
<span class="medgenPMjournal">Clin Genet</span>
2022 May;101(5-6):530-540.
Epub 2022 Apr 12
doi: 10.1111/cge.14132.
<span class="bold">PMID: </span><a href="/pubmed/35322404" target="_blank">35322404</a><a href="/pmc/articles/PMC9359317" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(neurodevelopmental%20disorder%20with%20microcephaly%2C%20seizures%2C%20and%20brain%20atrophy)%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>
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<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/35189806">Hypomyelination with Atrophy of Basal Ganglia and Cerebellum (HABC) Due to UFM1 Mutation in Roma Patients - Severe Early Encephalopathy with Stridor and Severe Hearing and Visual Impairment. A Single Center Experience.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ivanov I,
Pacheva I,
Yordanova R,
Sotkova I,
Galabova F,
Gaberova K,
Panova M,
Gheneva I,
Tsvetanova T,
Noneva K,
Dimitrova D,
Markov S,
Sapundzhiev N,
Bichev S,
Savov A</span><br />
<span class="medgenPMjournal">CNS Neurol Disord Drug Targets</span>
2023;22(2):207-214.
doi: 10.2174/1871527321666220221100704.
<span class="bold">PMID: </span><a href="/pubmed/35189806" target="_blank">35189806</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33640666">CASK related disorder: Epilepsy and developmental outcome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Giacomini T,
Nuovo S,
Zanni G,
Mancardi MM,
Cusmai R,
Pepi C,
Bertini E,
Valente EM,
Battini R,
Ferrari A,
Romaniello R,
Zucca C,
Borgatti R,
Uccella S,
Severino M,
Striano P,
Pistorio A,
Prato G,
De Grandis E,
Nobili L,
Pisciotta L</span><br />
<span class="medgenPMjournal">Eur J Paediatr Neurol</span>
2021 Mar;31:61-69.
Epub 2021 Feb 19
doi: 10.1016/j.ejpn.2021.02.006.
<span class="bold">PMID: </span><a href="/pubmed/33640666" target="_blank">33640666</a></div>
<div class="nl"><a target="_blank" href="/pubmed/32167590">KCNT1-related epilepsy: An international multicenter cohort of 27 pediatric cases.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Borlot F,
Abushama A,
Morrison-Levy N,
Jain P,
Puthenveettil Vinayan K,
Abukhalid M,
Aldhalaan HM,
Almuzaini HS,
Gulati S,
Hershkovitz T,
Konanki R,
Lingappa L,
Luat AF,
Shafi S,
Tabarki B,
Thomas M,
Yoganathan S,
Alfadhel M,
Arya R,
Donner EJ,
Ehaideb SN,
Gowda VK,
Jain V,
Madaan P,
Myers KA,
Otsubo H,
Panda P,
Sahu JK,
Sampaio LPB,
Sharma S,
Simard-Tremblay E,
Zak M,
Whitney R</span><br />
<span class="medgenPMjournal">Epilepsia</span>
2020 Apr;61(4):679-692.
Epub 2020 Mar 13
doi: 10.1111/epi.16480.
<span class="bold">PMID: </span><a href="/pubmed/32167590" target="_blank">32167590</a></div>
<div class="nl"><a target="_blank" href="/pubmed/27232581">Microcephalic primordial dwarfism in an Emirati patient with PNKP mutation.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nair P,
Hamzeh AR,
Mohamed M,
Saif F,
Tawfiq N,
El Halik M,
Al-Ali MT,
Bastaki F</span><br />
<span class="medgenPMjournal">Am J Med Genet A</span>
2016 Aug;170(8):2127-32.
Epub 2016 May 27
doi: 10.1002/ajmg.a.37766.
<span class="bold">PMID: </span><a href="/pubmed/27232581" target="_blank">27232581</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21625931">Magnetic resonance imaging of the brain in adenylosuccinate lyase deficiency: a report of seven cases and a review of the literature.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Jurecka A,
Jurkiewicz E,
Tylki-Szymanska A</span><br />
<span class="medgenPMjournal">Eur J Pediatr</span>
2012 Jan;171(1):131-8.
Epub 2011 May 31
doi: 10.1007/s00431-011-1503-9.
<span class="bold">PMID: </span><a href="/pubmed/21625931" target="_blank">21625931</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Neurodevelopmental%20disorder%20with%20microcephaly%2C%20seizures%2C%20and%20brain%20atrophy%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 (15)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/35189806">Hypomyelination with Atrophy of Basal Ganglia and Cerebellum (HABC) Due to UFM1 Mutation in Roma Patients - Severe Early Encephalopathy with Stridor and Severe Hearing and Visual Impairment. A Single Center Experience.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ivanov I,
Pacheva I,
Yordanova R,
Sotkova I,
Galabova F,
Gaberova K,
Panova M,
Gheneva I,
Tsvetanova T,
Noneva K,
Dimitrova D,
Markov S,
Sapundzhiev N,
Bichev S,
Savov A</span><br />
<span class="medgenPMjournal">CNS Neurol Disord Drug Targets</span>
2023;22(2):207-214.
doi: 10.2174/1871527321666220221100704.
<span class="bold">PMID: </span><a href="/pubmed/35189806" target="_blank">35189806</a></div>
<div class="nl"><a target="_blank" href="/pubmed/36004946">Neurodevelopmental disorder with microcephaly, ataxia, and seizures syndrome: expansion of the clinical spectrum.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Karaer K,
Karaer D,
Yüksel Z,
Işikay S</span><br />
<span class="medgenPMjournal">Clin Dysmorphol</span>
2022 Oct 1;31(4):167-173.
Epub 2022 Jul 14
doi: 10.1097/MCD.0000000000000426.
<span class="bold">PMID: </span><a href="/pubmed/36004946" target="_blank">36004946</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34037727">Biallelic variants in VPS50 cause a neurodevelopmental disorder with neonatal cholestasis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Schneeberger PE,
Nampoothiri S,
Holling T,
Yesodharan D,
Alawi M,
Knisely AS,
Müller T,
Plecko B,
Janecke AR,
Kutsche K</span><br />
<span class="medgenPMjournal">Brain</span>
2021 Nov 29;144(10):3036-3049.
doi: 10.1093/brain/awab206.
<span class="bold">PMID: </span><a href="/pubmed/34037727" target="_blank">34037727</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33756211">Delineation of the phenotype of MED17-related disease in Caucasus-Jewish families.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Fattal-Valevski A,
Ben Sira L,
Lerman-Sagie T,
Strausberg R,
Bloch-Mimouni A,
Edvardson S,
Kaufman R,
Chernuha V,
Schneebaum Sender N,
Heimer G,
Ben Zeev B</span><br />
<span class="medgenPMjournal">Eur J Paediatr Neurol</span>
2021 May;32:40-45.
Epub 2021 Mar 5
doi: 10.1016/j.ejpn.2020.08.011.
<span class="bold">PMID: </span><a href="/pubmed/33756211" target="_blank">33756211</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33640666">CASK related disorder: Epilepsy and developmental outcome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Giacomini T,
Nuovo S,
Zanni G,
Mancardi MM,
Cusmai R,
Pepi C,
Bertini E,
Valente EM,
Battini R,
Ferrari A,
Romaniello R,
Zucca C,
Borgatti R,
Uccella S,
Severino M,
Striano P,
Pistorio A,
Prato G,
De Grandis E,
Nobili L,
Pisciotta L</span><br />
<span class="medgenPMjournal">Eur J Paediatr Neurol</span>
2021 Mar;31:61-69.
Epub 2021 Feb 19
doi: 10.1016/j.ejpn.2021.02.006.
<span class="bold">PMID: </span><a href="/pubmed/33640666" target="_blank">33640666</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Neurodevelopmental%20disorder%20with%20microcephaly%2C%20seizures%2C%20and%20brain%20atrophy%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 (39)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/32167590">KCNT1-related epilepsy: An international multicenter cohort of 27 pediatric cases.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Borlot F,
Abushama A,
Morrison-Levy N,
Jain P,
Puthenveettil Vinayan K,
Abukhalid M,
Aldhalaan HM,
Almuzaini HS,
Gulati S,
Hershkovitz T,
Konanki R,
Lingappa L,
Luat AF,
Shafi S,
Tabarki B,
Thomas M,
Yoganathan S,
Alfadhel M,
Arya R,
Donner EJ,
Ehaideb SN,
Gowda VK,
Jain V,
Madaan P,
Myers KA,
Otsubo H,
Panda P,
Sahu JK,
Sampaio LPB,
Sharma S,
Simard-Tremblay E,
Zak M,
Whitney R</span><br />
<span class="medgenPMjournal">Epilepsia</span>
2020 Apr;61(4):679-692.
Epub 2020 Mar 13
doi: 10.1111/epi.16480.
<span class="bold">PMID: </span><a href="/pubmed/32167590" target="_blank">32167590</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30656450">Mutations in ACTL6B, coding for a subunit of the neuron-specific chromatin remodeling complex nBAF, cause early onset severe developmental and epileptic encephalopathy with brain hypomyelination and cerebellar atrophy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Fichera M,
Failla P,
Saccuzzo L,
Miceli M,
Salvo E,
Castiglia L,
Galesi O,
Grillo L,
Calì F,
Greco D,
Amato C,
Romano C,
Elia M</span><br />
<span class="medgenPMjournal">Hum Genet</span>
2019 Feb;138(2):187-198.
Epub 2019 Jan 17
doi: 10.1007/s00439-019-01972-3.
<span class="bold">PMID: </span><a href="/pubmed/30656450" target="_blank">30656450</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22407754">Neurodevelopmental features in 2q23.1 microdeletion syndrome: report of a new patient with intractable seizures and review of literature.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Motobayashi M,
Nishimura-Tadaki A,
Inaba Y,
Kosho T,
Miyatake S,
Niimi T,
Nishimura T,
Wakui K,
Fukushima Y,
Matsumoto N,
Koike K</span><br />
<span class="medgenPMjournal">Am J Med Genet A</span>
2012 Apr;158A(4):861-8.
Epub 2012 Mar 9
doi: 10.1002/ajmg.a.35235.
<span class="bold">PMID: </span><a href="/pubmed/22407754" target="_blank">22407754</a></div>
<div class="nl"><a target="_blank" href="/pubmed/15668054">Profile of West syndrome in North Indian children.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Singhi P,
Ray M</span><br />
<span class="medgenPMjournal">Brain Dev</span>
2005 Mar;27(2):135-40.
doi: 10.1016/j.braindev.2003.10.007.
<span class="bold">PMID: </span><a href="/pubmed/15668054" target="_blank">15668054</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Neurodevelopmental%20disorder%20with%20microcephaly%2C%20seizures%2C%20and%20brain%20atrophy%22%20AND%20Therapy%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (4)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/36508181">An expansion of phenotype: novel homozygous variant in the MED17 identified in patients with progressive microcephaly and global developmental delay.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rafiullah R,
Albalawi AM,
Alaradi SR,
Alluqmani M,
Mushtaq M,
Wali A,
Basit S</span><br />
<span class="medgenPMjournal">J Neurogenet</span>
2022 Sep-Dec;36(4):108-114.
Epub 2022 Dec 12
doi: 10.1080/01677063.2022.2149748.
<span class="bold">PMID: </span><a href="/pubmed/36508181" target="_blank">36508181</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33640666">CASK related disorder: Epilepsy and developmental outcome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Giacomini T,
Nuovo S,
Zanni G,
Mancardi MM,
Cusmai R,
Pepi C,
Bertini E,
Valente EM,
Battini R,
Ferrari A,
Romaniello R,
Zucca C,
Borgatti R,
Uccella S,
Severino M,
Striano P,
Pistorio A,
Prato G,
De Grandis E,
Nobili L,
Pisciotta L</span><br />
<span class="medgenPMjournal">Eur J Paediatr Neurol</span>
2021 Mar;31:61-69.
Epub 2021 Feb 19
doi: 10.1016/j.ejpn.2021.02.006.
<span class="bold">PMID: </span><a href="/pubmed/33640666" target="_blank">33640666</a></div>
<div class="nl"><a target="_blank" href="/pubmed/32741967">Clinical, molecular, and biochemical delineation of asparagine synthetase deficiency in Saudi cohort.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Alharby E,
Faqeih EA,
Saleh M,
Alameer S,
Almuntashri M,
Pastore A,
Samman MA,
Alnawfal AM,
Hashem M,
Zaytuni D,
Alharbi G,
Almannai M,
Alasmari A,
Mahmoud AA,
Alwadei AH,
Jad L,
AlOtaibi A,
Al-Hakami F,
Eyaid W,
Alkuraya FS,
Alfadhel M,
Peake RWA,
Almontashiri NAM</span><br />
<span class="medgenPMjournal">Genet Med</span>
2020 Dec;22(12):2071-2080.
Epub 2020 Aug 3
doi: 10.1038/s41436-020-0919-x.
<span class="bold">PMID: </span><a href="/pubmed/32741967" target="_blank">32741967</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31395947">Phenotype and mutation expansion of the PTPN23 associated disorder characterized by neurodevelopmental delay and structural brain abnormalities.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Bend R,
Cohen L,
Carter MT,
Lyons MJ,
Niyazov D,
Mikati MA,
Rojas SK,
Person RE,
Si Y,
Wentzensen IM;
Regeneron Genetics Center,
Torti E,
Lee JA,
Boycott KM,
Basel-Salmon L,
Ferreira CR,
Gonzaga-Jauregui C</span><br />
<span class="medgenPMjournal">Eur J Hum Genet</span>
2020 Jan;28(1):76-87.
Epub 2019 Aug 8
doi: 10.1038/s41431-019-0487-1.
<span class="bold">PMID: </span><a href="/pubmed/31395947" target="_blank">31395947</a><a href="/pmc/articles/PMC6906308" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22564885">Neurological findings in incontinentia pigmenti; a review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Meuwissen ME,
Mancini GM</span><br />
<span class="medgenPMjournal">Eur J Med Genet</span>
2012 May;55(5):323-31.
Epub 2012 May 4
doi: 10.1016/j.ejmg.2012.04.007.
<span class="bold">PMID: </span><a href="/pubmed/22564885" target="_blank">22564885</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Neurodevelopmental%20disorder%20with%20microcephaly%2C%20seizures%2C%20and%20brain%20atrophy%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 (18)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/37111157">Metabolomic Profiling of Asparagine Deprivation in Asparagine Synthetase Deficiency Patient-Derived Cells.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Chang MC,
Staklinski SJ,
Malut VR,
Pierre GL,
Kilberg MS,
Merritt ME</span><br />
<span class="medgenPMjournal">Nutrients</span>
2023 Apr 18;15(8)
doi: 10.3390/nu15081938.
<span class="bold">PMID: </span><a href="/pubmed/37111157" target="_blank">37111157</a><a href="/pmc/articles/PMC10145675" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35189806">Hypomyelination with Atrophy of Basal Ganglia and Cerebellum (HABC) Due to UFM1 Mutation in Roma Patients - Severe Early Encephalopathy with Stridor and Severe Hearing and Visual Impairment. A Single Center Experience.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ivanov I,
Pacheva I,
Yordanova R,
Sotkova I,
Galabova F,
Gaberova K,
Panova M,
Gheneva I,
Tsvetanova T,
Noneva K,
Dimitrova D,
Markov S,
Sapundzhiev N,
Bichev S,
Savov A</span><br />
<span class="medgenPMjournal">CNS Neurol Disord Drug Targets</span>
2023;22(2):207-214.
doi: 10.2174/1871527321666220221100704.
<span class="bold">PMID: </span><a href="/pubmed/35189806" target="_blank">35189806</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35322404">El-Hattab-Alkuraya syndrome caused by biallelic WDR45B pathogenic variants: Further delineation of the phenotype and genotype.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Almannai M,
Marafi D,
Abdel-Salam GMH,
Zaki MS,
Duan R,
Calame D,
Herman I,
Levesque F,
Elbendary HM,
Hegazy I,
Chung WK,
Kavus H,
Saeidi K,
Maroofian R,
AlHashim A,
Al-Otaibi A,
Al Madhi A,
Abou Al-Seood HM,
Alasmari A,
Houlden H,
Gleeson JG,
Hunter JV,
Posey JE,
Lupski JR,
El-Hattab AW</span><br />
<span class="medgenPMjournal">Clin Genet</span>
2022 May;101(5-6):530-540.
Epub 2022 Apr 12
doi: 10.1111/cge.14132.
<span class="bold">PMID: </span><a href="/pubmed/35322404" target="_blank">35322404</a><a href="/pmc/articles/PMC9359317" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34878169">Further evidence of muscle involvement in neurodevelopmental disorder with epilepsy, spasticity, and brain atrophy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Majethia P,
Do Rosario MC,
Kaur P,
Karanvir,
Shankar R,
Sharma S,
Siddiqui S,
Shukla A</span><br />
<span class="medgenPMjournal">Ann Hum Genet</span>
2022 Mar;86(2):94-101.
Epub 2021 Dec 8
doi: 10.1111/ahg.12452.
<span class="bold">PMID: </span><a href="/pubmed/34878169" target="_blank">34878169</a><a href="/pmc/articles/PMC9990823" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31395947">Phenotype and mutation expansion of the PTPN23 associated disorder characterized by neurodevelopmental delay and structural brain abnormalities.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Bend R,
Cohen L,
Carter MT,
Lyons MJ,
Niyazov D,
Mikati MA,
Rojas SK,
Person RE,
Si Y,
Wentzensen IM;
Regeneron Genetics Center,
Torti E,
Lee JA,
Boycott KM,
Basel-Salmon L,
Ferreira CR,
Gonzaga-Jauregui C</span><br />
<span class="medgenPMjournal">Eur J Hum Genet</span>
2020 Jan;28(1):76-87.
Epub 2019 Aug 8
doi: 10.1038/s41431-019-0487-1.
<span class="bold">PMID: </span><a href="/pubmed/31395947" target="_blank">31395947</a><a href="/pmc/articles/PMC6906308" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Neurodevelopmental%20disorder%20with%20microcephaly%2C%20seizures%2C%20and%20brain%20atrophy%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 (27)</a></div></div>
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<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C5436747%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (1)</a></li>
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<div class="portlet_content ln"><ul class="a_poppers"><li><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(neurodevelopmental%20disorder%20with%20microcephaly%2C%20seizures%2C%20and%20brain%20atrophy)%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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