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<meta name="keywords" content="C0038220, disease or syndrome, gcse, generalised convulsive status epilepticus, generalized convulsive status epilepticus, generalized status epilepticus, grand mal status, prolonged seizure, prolonged seizures, repeated seizure without recovery, repeated seizures without recovery between them, se, se - status epilepticus, status epilepticus, status epilepticus, generalized, 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="Status epilepticus is a type of prolonged seizure resulting either from the failure of the mechanisms responsible for seizure termination or from the initiation of mechanisms which lead to abnormally prolonged seizures (after time point t1). It is a condition that can have long-term consequences (after time point t2), including neuronal death, neuronal injury, and alteration of neuronal networks, depending on the type and duration of seizures." /><meta name="robots" content="index,nofollow,noarchive" />
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<!--
UID=11586
ConceptID=C0038220
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Status epilepticus</div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>11586</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0038220</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonym:</td>
<td>Repeated seizure without recovery</td></tr>
<tr><td><span class="bold">SNOMED CT: </span></td>
<td>Status epilepticus (230456007); SE - status epilepticus (230456007)</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>HPO:</td>
<td><a target="_blank" title="Human Phenotype Ontology" href="https://hpo.jax.org/app/browse/term/HP:0002133">HP:0002133</a></td></tr>
<tr><td>Monarch Initiative:</td>
<td><a href="https://monarchinitiative.org/disease/MONDO:0002125" target="_blank">MONDO:0002125</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">Status epilepticus is a type of prolonged seizure resulting either from the failure of the mechanisms responsible for seizure termination or from the initiation of mechanisms which lead to abnormally prolonged seizures (after time point t1). It is a condition that can have long-term consequences (after time point t2), including neuronal death, neuronal injury, and alteration of neuronal networks, depending on the type and duration of seizures. [from <a title="Human Phenotype Ontology" href="http://www.human-phenotype-ontology.org" class="defSource" target="_blank">HPO</a>]</div>
</div>
<div class="portlet mgSection" id="ID_118">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Term_Hierarchy">Term Hierarchy</h1><a sid="118" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln HierarchyGTR"><div class="jig-ncbitabs"><ul><li><a href="#tabGTR">GTR</a></li><li><a href="#tabMGEN">MeSH</a></li></ul><div id="tabGTR"><div class="search_result"><div class="rprts"><div class="chiclet_legend"><span class="chiclet_list" style="position:static;"><span title="Clinical test" class="chiclet Ccolor round">C</span><span>Clinical test,  </span><span title="Research test" class="chiclet Rcolor round">R</span><span>Research test,  </span><span title="OMIM" class="chiclet Ocolor ">O</span><span>OMIM,  </span><span title="GeneReview" class="chiclet Gcolor">G</span><span><em>GeneReviews</em>,  </span><span title="ClinVar" class="chiclet Vcolor">V</span><span>ClinVar  </span></span></div><div id="hierarchy" class="margin_t1"><div class="ds_tree"><ul><li class="matched_ds"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C0038220[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=11586">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=11586" ref="ncbi_uid=11586">V</a></span></span><span class="TLline">Status epilepticus</span></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/21047" ref="tree=MeSH" title="MedGen record for Pathological Conditions, Signs and Symptoms">Pathological Conditions, Signs and Symptoms</a></span><ul><li><span class="TLline"><a href="/medgen/18325" ref="tree=MeSH" title="MedGen record for Pathological process">Pathological process</a></span><ul><li><span class="TLline"><a href="/medgen/4347" ref="tree=MeSH" title="MedGen record for Disease">Disease</a></span><ul><li><span class="TLline"><a href="/medgen/311052" ref="tree=MeSH" title="MedGen record for Non-Neoplastic Disorder">Non-Neoplastic Disorder</a></span><ul><li><span class="TLline"><a href="/medgen/317955" ref="tree=MeSH" title="MedGen record for Non-Neoplastic Disorder by Special Category">Non-Neoplastic Disorder by Special Category</a></span><ul><li><span class="TLline"><a href="/medgen/354119" ref="tree=MeSH" title="MedGen record for Rare Non-Neoplastic Disorder">Rare Non-Neoplastic Disorder</a></span><ul><li><span class="matched_ds">Status epilepticus</span><ul><li><span class="TLline"><a href="/medgen/39303" ref="tree=MeSH" title="MedGen record for Epilepsia partialis continua">Epilepsia partialis continua</a></span></li><li><span class="TLline"><a href="/medgen/1713873" ref="tree=MeSH" title="MedGen record for Refractory status epilepticus">Refractory status epilepticus</a></span><ul><li><span class="TLline"><a href="/medgen/1708961" ref="tree=MeSH" title="MedGen record for Super-refractory status epilepticus">Super-refractory status epilepticus</a></span></li></ul></li><li><span class="TLline"><a href="/medgen/1720011" ref="tree=MeSH" title="MedGen record for Status epilepticus with prominent motor symptoms">Status epilepticus with prominent motor symptoms</a></span><ul><li><span class="TLline"><a href="/medgen/137148" ref="tree=MeSH" title="MedGen record for Convulsive status epilepticus">Convulsive status epilepticus</a></span><ul><li><span class="TLline"><a href="/medgen/1714035" ref="tree=MeSH" title="MedGen record for Focal-onset seizure evolving into bilateral convulsive status epilepticus">Focal-onset seizure evolving into bilateral convulsive status epilepticus</a></span></li><li><span class="TLline"><a href="/medgen/1853124" ref="tree=MeSH" title="MedGen record for Generalized convulsive status epilepticus">Generalized convulsive status epilepticus</a></span></li></ul></li><li><span class="TLline"><a href="/medgen/1716066" ref="tree=MeSH" title="MedGen record for Focal motor status epilepticus">Focal motor status epilepticus</a></span><ul><li><span class="TLline"><a href="/medgen/1715336" ref="tree=MeSH" title="MedGen record for Adversive status epilepticus">Adversive status epilepticus</a></span></li><li><span class="TLline"><a href="/medgen/1717602" ref="tree=MeSH" title="MedGen record for Oculoclonic status epilepticus">Oculoclonic status epilepticus</a></span></li><li><span class="TLline"><a href="/medgen/1710590" ref="tree=MeSH" title="MedGen record for Repeated focal motor seizures">Repeated focal motor seizures</a></span></li><li><span class="TLline"><a href="/medgen/1710005" ref="tree=MeSH" title="MedGen record for Status epilepticus with ictal paresis">Status epilepticus with ictal paresis</a></span></li></ul></li><li><span class="TLline"><a href="/medgen/1714344" ref="tree=MeSH" title="MedGen record for Hyperkinetic status epilepticus">Hyperkinetic status epilepticus</a></span></li><li><span class="TLline"><a href="/medgen/1712171" ref="tree=MeSH" title="MedGen record for Myoclonic status epilepticus">Myoclonic status epilepticus</a></span><ul><li><span class="TLline"><a href="/medgen/1711503" ref="tree=MeSH" title="MedGen record for Myoclonic status epilepticus with coma">Myoclonic status epilepticus with coma</a></span></li><li><span class="TLline"><a href="/medgen/1717332" ref="tree=MeSH" title="MedGen record for Myoclonic status epilepticus without coma">Myoclonic status epilepticus without coma</a></span></li></ul></li><li><span class="TLline"><a href="/medgen/1717093" ref="tree=MeSH" title="MedGen record for Tonic status epilepticus">Tonic status epilepticus</a></span></li></ul></li><li><span class="TLline"><a href="/medgen/199677" ref="tree=MeSH" title="MedGen record for Status epilepticus without prominent motor symptoms">Status epilepticus without prominent motor symptoms</a></span><ul><li><span class="TLline"><a href="/medgen/1718567" ref="tree=MeSH" title="MedGen record for Non-convulsive status epilepticus with coma">Non-convulsive status epilepticus with coma</a></span></li><li><span class="TLline"><a href="/medgen/1715409" ref="tree=MeSH" title="MedGen record for Non-convulsive status epilepticus without coma">Non-convulsive status epilepticus without coma</a></span><ul><li><span class="TLline"><a href="/medgen/1719169" ref="tree=MeSH" title="MedGen record for Autonomic status epilepticus">Autonomic status epilepticus</a></span></li><li><span class="TLline"><a href="/medgen/1718145" ref="tree=MeSH" title="MedGen record for Focal non-convulsive status epilepticus without coma">Focal non-convulsive status epilepticus without coma</a></span></li><li><span class="TLline"><a href="/medgen/124372" ref="tree=MeSH" title="MedGen record for Generalized non-convulsive status epilepticus without coma">Generalized non-convulsive status epilepticus without coma</a></span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></div></div></div></div>
</div>
<div class="portlet mgSection" id="ID_112">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Conditions_with_this_feature">Conditions with this feature</h1><a sid="112" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat">
<div class="divPopper rprt" id="rdis_60012"><div><strong>Progressive sclerosing poliodystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>60012</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.">C0205710</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">POLG-related disorders comprise a continuum of overlapping phenotypes that were clinically defined before the molecular basis was known. POLG-related disorders can therefore be considered an overlapping spectrum of disease presenting from early childhood to late adulthood. The age of onset broadly correlates with the clinical phenotype. In individuals with early-onset disease (prior to age 12 years), liver involvement, feeding difficulties, seizures, hypotonia, and muscle weakness are the most common clinical features. This group has the worst prognosis. In the juvenile/adult-onset form (age 12-40 years), disease is typically characterized by peripheral neuropathy, ataxia, seizures, stroke-like episodes, and, in individuals with longer survival, progressive external ophthalmoplegia (PEO). This group generally has a better prognosis than the early-onset group. Late-onset disease (after age 40 years) is characterized by ptosis and PEO, with additional features such as peripheral neuropathy, ataxia, and muscle weakness. This group overall has the best prognosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/60012">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_120645"><div><strong>Proline dehydrogenase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>120645</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.">C0268529</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Phang et al. (2001) noted that prospective studies of HPI probands identified through newborn screening as well as reports of several families have suggested that it is a metabolic disorder not clearly associated with clinical manifestations. Phang et al. (2001) concluded that HPI is a relatively benign condition in most individuals under most circumstances. However, other reports have suggested that some patients have a severe phenotype with neurologic manifestations, including epilepsy and impaired intellectual development (Jacquet et al., 2003).&#13; Genetic Heterogeneity of Hyperprolinemia&#13; See also hyperprolinemia type II (HYRPRO2; 239510), which is caused by mutation in the gene encoding pyrroline-5-carboxylate dehydrogenase (P5CDH, ALDH4A1; 606811) on chromosome 1p36.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/120645">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_124340"><div><strong>Succinate-semialdehyde dehydrogenase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>124340</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.">C0268631</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Succinic semialdehyde dehydrogenase (SSADH) deficiency is characterized by a relatively non-progressive encephalopathy typically presenting with hypotonia and delayed acquisition of motor and language developmental milestones in the first two years of life. Common clinical features include an almost universal intellectual disability and adaptive function deficits, as well as epilepsy, autism spectrum disorder, movement disorders (such as ataxia, dystonia, and exertional dyskinesia), sleep disturbances, attention problems, anxiety, and obsessive-compulsive behaviors. Notably, seizures, autism spectrum disorder features, and behavioral problems tend to worsen around the time of late childhood or early adolescence. Affected individuals do not usually have episodic decompensation following metabolic stressors, as is typical of other organic acidemias and metabolic encephalopathies, although some have been diagnosed after having unanticipated difficulty recovering from otherwise ordinary childhood illnesses. Clinical presentation with acute onset of generalized hypotonia and choreiform movement following upper-respiratory tract infection has been observed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/124340">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_452447"><div><strong>D-Glyceric aciduria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>452447</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.">C0342765</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">D-glyceric aciduria is a rare autosomal recessive metabolic disorder with a highly variable phenotype. Some patients have an encephalopathic presentation, with severely impaired intellectual development, seizures, microcephaly, and sometimes early death, whereas others have a mild phenotype with only mild speech delay or even normal development (summary by Sass et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/452447">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_87458"><div><strong>Fumarase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>87458</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.">C0342770</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Fumarate hydratase (FH) deficiency results in severe neonatal and early infantile encephalopathy that is characterized by poor feeding, failure to thrive, hypotonia, lethargy, and seizures. Dysmorphic facial features include frontal bossing, depressed nasal bridge, and widely spaced eyes. Many affected individuals are microcephalic. A spectrum of brain abnormalities are seen on magnetic resonance imaging, including cerebral atrophy, enlarged ventricles and generous extra-axial cerebral spinal fluid (CSF) spaces, delayed myelination for age, thinning of the corpus callosum, and an abnormally small brain stem. Brain malformations including bilateral polymicrogyria and absence of the corpus callosum can also be observed. Development is severely affected: most affected individuals are nonverbal and nonambulatory, and many die during early childhood. Less severely affected individuals with moderate cognitive impairment and long-term survival have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/87458">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_148243"><div><strong>Severe myoclonic epilepsy in infancy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>148243</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.">C0751122</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SCN1A seizure disorders encompass a spectrum that ranges from simple febrile seizures and generalized epilepsy with febrile seizures plus (GEFS+) at the mild end to Dravet syndrome and intractable childhood epilepsy with generalized tonic-clonic seizures (ICE-GTC) at the severe end. Phenotypes with intractable seizures including Dravet syndrome are often associated with cognitive decline. Less commonly observed phenotypes include myoclonic astatic epilepsy (MAE), Lennox-Gastaut syndrome, infantile spasms, epilepsy with focal seizures, and vaccine-related encephalopathy and seizures. The phenotype of SCN1A seizure disorders can vary even within the same family.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/148243">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_226944"><div><strong>Deficiency of beta-ureidopropionase</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>226944</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.">C1291512</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Beta-ureidopropionase deficiency is a rare autosomal recessive inborn error of metabolism due to a defect in pyrimidine degradation. Less than 10 patients have been reported, and the phenotype can range from severe neurologic involvement with mental retardation and seizures to normal neurologic development (Yaplito-Lee et al., 2008).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/226944">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_323005"><div><strong>GM3 synthase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>323005</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836824</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Early clinical features of GM3 synthase deficiency include infantile onset of severe irritability with feeding difficulties, early and intractable seizures, growth failure with acquired microcephaly, sensorineural hearing impairment, hypotonia, and poor visual function. Over time, affected individuals experience severe-to-profound developmental delay and intellectual disability, can develop dystonia with hyperkinetic movements, and may develop pigmentary skin changes of the hands and feet. Affected individuals often have frequent ear infections and pneumonia without evidence of immune dysfunction.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/323005">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337496"><div><strong>Syndromic X-linked intellectual disability Lubs type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337496</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.">C1846058</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MECP2 duplication syndrome is a severe neurodevelopmental disorder characterized by early-onset hypotonia, feeding difficulty, gastrointestinal manifestations including gastroesophageal reflux and constipation, delayed psychomotor development leading to severe intellectual disability, poor speech development, progressive spasticity, recurrent respiratory infections (in ~75% of affected individuals), and seizures (in ~50%). MECP2 duplication syndrome is 100% penetrant in males. Occasionally females have been described with a MECP2 duplication and a range of findings from mild intellectual disability to a phenotype similar to that seen in males. In addition to the core features, autistic behaviors, nonspecific neuroradiologic findings on brain MRI, mottled skin, and urogenital anomalies have been observed in several affected boys.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337496">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338393"><div><strong>Developmental and epileptic encephalopathy, 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338393</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.">C1848137</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-9 (DEE9) is an X-linked disorder characterized by seizure onset in infancy and mild to severe intellectual impairment. Autistic and psychiatric features have been reported in some individuals. The disorder affects heterozygous females only; transmitting males are unaffected (summary by Jamal et al., 2010).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of developmental and epileptic encephalopathy, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338393">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_338613"><div><strong>Infantile onset spinocerebellar ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>338613</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.">C1849096</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial DNA depletion syndrome-7 is an autosomal recessive severe neurodegenerative disorder characterized primarily by hypotonia, ataxia, ophthalmoplegia, hearing loss, seizures, and sensory axonal neuropathy. Although originally classified as a form of spinocerebellar ataxia (see, e.g., SCA1, 164400) (Koskinen et al., 1994), it has been reclassified as a mitochondrial DNA depletion syndrome (Hakonen et al., 2008) based on the finding of mtDNA depletion in the brain and liver of affected individuals.&#13; For a discussion of genetic heterogeneity of autosomal recessive mtDNA depletion syndromes, see MTDPS1 (603041).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/338613">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340341"><div><strong>Pyridoxine-dependent epilepsy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340341</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.">C1849508</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pyridoxine-dependent epilepsy ALDH7A1 (PDE-ALDH7A1) is characterized by seizures not well controlled with anti-seizure medication that are responsive clinically and electrographically to large daily supplements of pyridoxine (vitamin B6). This is true across a phenotypic spectrum that ranges from classic to atypical PDE-ALDH7A1. Intellectual disability is common, particularly in classic PDE-ALDH7A1. In classic PDE-ALDH7A1, untreated seizures begin within the first weeks to months of life. Dramatic presentations of prolonged seizures and recurrent episodes of status epilepticus are typical; recurrent self-limited events including partial seizures, generalized seizures, atonic seizures, myoclonic events, and infantile spasms also occur. Electrographic seizures can occur without clinical correlates. In atypical PDE-ALDH7A1, findings in untreated individuals can include late-onset seizures beginning between late infancy and age three years, seizures that initially respond to anti-seizure medication and then become intractable, seizures during early life that do not respond to pyridoxine but are subsequently controlled with pyridoxine several months later, and prolonged seizure-free intervals (=5 months) that occur after discontinuation of pyridoxine.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340341">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337956"><div><strong>PEHO-like syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337956</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.">C1850056</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic neurological disease characterized by progressive encephalopathy, early-onset seizures with a hypsarrhythmic pattern, facial and limb edema, severe hypotonia, early arrest of psychomotor development and craniofacial dysmorphism (evolving microcephaly, narrow forehead, short nose, prominent auricles, open mouth, micrognathia), in the absence of neuro-ophthalmic or neuroradiologic findings. Poor visual responsiveness, growth failure and tapering fingers are also associated. There is evidence the disease is caused by homozygous mutation in the CCDC88A gene on chromosome 2p16.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337956">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_342587"><div><strong>Myoclonic epilepsy, juvenile, susceptibility to, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>342587</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.">C1850778</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div></div>
<div class="spaceAbove">Juvenile myoclonic epilepsy (EJM, JME) is a subtype of idiopathic generalized epilepsy (EIG; see 600669), affecting up to 26% of all individuals with EIG. Individuals with EJM have afebrile seizures only, with onset in adolescence of myoclonic jerks. Myoclonic jerks usually occur in the morning (Janz and Durner, 1997).&#13; Genetic Heterogeneity of Juvenile Myoclonic Seizures&#13; Susceptibility to EJM can be conferred by variation in several other genes: EJM5 (611136), by variation in the GABRA1 gene (137160) on 5q34; EJM6 (see 607682), by variation in the CACNB4 gene (601949) on 2q23; EJM8 (see 607628), by variation in the CLCN2 gene (600570) on 3q27; and EJM10 (617924), by variation in the ICK gene (612325) on chromosome 6p12.&#13; In addition, EJM loci have been identified by linkage analysis: EJM2 (see 604827) on 15q14, EJM3 (608816) on 6p21, EJM4 (611364) on 5q12-q14, and EJM9 (614280) on 2q33-q36.&#13; EJM7 (see 613060) was thought to be caused by variation in the GABRD gene (137163.0002) on 1p36, but the variant was reclassified as a polymorphism.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/342587">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347149"><div><strong>Osteodysplastic primordial dwarfism, type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347149</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.">C1859452</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">RNU4atac-opathy encompasses the phenotypic spectrum of biallelic RNU4ATAC pathogenic variants, including the three historically designated clinical phenotypes microcephalic osteodysplastic primordial dwarfism type I/III (MOPDI), Roifman syndrome, and Lowry-Wood syndrome, as well as varying combinations of the disease features / system involvement that do not match specific defined phenotypes. Findings present in all affected individuals include growth restriction, microcephaly, skeletal dysplasia, and cognitive impairment. Less common but variable findings include brain anomalies, seizures, strokes, immunodeficiency, and cardiac anomalies, as well as ophthalmologic, skin, renal, gastrointestinal, hearing, and endocrine involvement.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347149">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_351053"><div><strong>Autosomal dominant nocturnal frontal lobe epilepsy 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>351053</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.">C1864125</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant sleep-related hypermotor (hyperkinetic) epilepsy (ADSHE) is a seizure disorder characterized by clusters of nocturnal motor seizures that are often stereotyped and brief (&lt;2 minutes). They vary from simple arousals from sleep to dramatic, often hyperkinetic events with tonic or dystonic features. Affected individuals may experience an aura. Retained awareness during seizures is common. A minority of individuals experience daytime seizures. Age of onset ranges from infancy to adulthood. About 80% of individuals develop ADSHE in the first two decades of life; mean age of onset is ten years. Clinical neurologic examination is normal and intellect is usually preserved, but reduced intellect, psychiatric comorbidities, or cognitive deficits may occur. Within a family, the manifestations of the disorder may vary considerably. ADSHE is lifelong but not progressive. As an individual reaches middle age, seizures may become milder and less frequent.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/351053">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_350479"><div><strong>Gaucher disease due to saposin C deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>350479</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.">C1864651</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any Gaucher disease in which the cause of the disease is a mutation in the PSAP gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/350479">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_350481"><div><strong>Neuronal ceroid lipofuscinosis 10</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>350481</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.">C1864669</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The clinical course includes progressive dementia, seizures, and progressive visual failure (Mole et al., 2005).&#13; For a discussion of genetic heterogeneity of neuronal ceroid lipofuscinosis, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/350481">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_409971"><div><strong>COG8-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>409971</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.">C1970021</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Syndrome with characteristics of severe psychomotor retardation, failure to thrive and intolerance to wheat and dairy products. So far, only two cases have been described. The disease is caused by mutations in the COG8 gene, which encodes a subunit of the COG complex. This complex is involved vesicle transport in the Golgi apparatus.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/409971">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436917"><div><strong>Developmental and epileptic encephalopathy, 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436917</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.">C2677326</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">STXBP1 encephalopathy with epilepsy is characterized by early-onset developmental delay, intellectual disability or cognitive dysfunction, and epilepsy. The median age of onset of seizures is six weeks (range: 1 day to 13 years). Seizure types can include infantile spasms; generalized tonic-clonic, clonic, or tonic seizures; and myoclonic, atonic, absence, and focal seizures. EEG abnormalities can include focal epileptic activity, burst suppression, hypsarrhythmia, or generalized spike-and-slow waves. Other neurologic findings include abnormal tone, movement disorders (especially ataxia and dystonia), and behavioral issues and autism spectrum disorder. Feeding difficulties are common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436917">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_412815"><div><strong>Mitochondrial DNA depletion syndrome 8a</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>412815</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.">C2749861</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Four phenotypes comprise the RRM2B mitochondrial DNA maintenance defects (RRM2B-MDMDs): RRM2B encephalomyopathic MDMD, the most severe phenotype, usually manifesting shortly after birth as hypotonia, poor feeding, and faltering growth requiring hospitalization. Subsequent assessments are likely to reveal multisystem involvement including sensorineural hearing loss, renal tubulopathy, and respiratory failure. Autosomal dominant progressive external ophthalmoplegia (adPEO), typically adult onset; other manifestations can include ptosis, bulbar dysfunction, fatigue, and muscle weakness. RRM2B autosomal recessive progressive external ophthalmoplegia (arPEO), a typically childhood-onset predominantly myopathic phenotype of PEO, ptosis, proximal muscle weakness, and bulbar dysfunction. RRM2B mitochondrial neurogastrointestinal encephalopathy (MNGIE)-like, characterized by progressive ptosis, ophthalmoplegia, gastrointestinal dysmotility, cachexia, and peripheral neuropathy. To date, 78 individuals from 52 families with a molecularly confirmed RRM2B-MDMD have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/412815">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_413258"><div><strong>Cortical dysplasia-focal epilepsy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>413258</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.">C2750246</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pitt-Hopkins-like syndrome-1 (PTHSL1) is an autosomal recessive neurodevelopmental disorder characterized by delayed psychomotor development, intellectual disability, severe speech impairment or regression, and behavioral abnormalities. Most patients have onset of seizures within the first years of life. Some patients may have cortical dysplasia on brain imaging (summary by Smogavec et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/413258">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_414492"><div><strong>Developmental and epileptic encephalopathy, 39</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>414492</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.">C2751855</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-39 with leukodystrophy (DEE39) is an autosomal recessive neurologic syndrome characterized clinically by global developmental delay apparent in early infancy, early-onset seizures, hypotonia with poor motor function, and hypomyelination on brain imaging. Other features include absent speech and inability to walk; spasticity and hyperreflexia has also been reported. Although there is significant hypomyelination on brain imaging, the disorder was not classified as a primary leukodystrophy. The myelination defect was thought to stem from primary neuronal dysfunction due to impaired mitochondrial transport activity (summary by Wibom et al., 2009 and Falk et al., 2014). However, serial brain imaging in a patient with DEE39 by Kavanaugh et al. (2019) suggested that the mechanism of disease is consistent with a leukoaxonopathy type of leukodystrophy.&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/414492">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419284"><div><strong>Ring chromosome 14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419284</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.">C2930916</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Ring chromosome 14 syndrome is characterized by early-onset epilepsy, developmental delay with impaired intellectual development and poor speech, microcephaly, and dysmorphic facial features. Additional variable features include hypotonia and retinopathy (summary by Imataka et al., 2013 and Giovannini et al., 2013).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419284">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462337"><div><strong>Developmental and epileptic encephalopathy, 11</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462337</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.">C3150987</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-11 (DEE11) is a neurologic disorder characterized by onset of seizures in the first days, weeks, or months of life. Some patients may have later onset. Seizures comprise multiple types, including tonic, generalized, and myoclonic, and tend to be refractory to medication. However, some patients with onset of seizures before 3 months of age may respond to sodium channel blockers, particularly phenytoin. About half of patients become seizure-free in childhood. Affected individuals have global developmental delay, usually with severely impaired intellectual development, although some may be less severely affected and show autism spectrum disorder. Additional common features include microcephaly, hypotonia, and abnormal movements, such as dystonia, dyskinesias, and choreoathetotic movements. Brain imaging may show white matter defects. The phenotype is highly variable, even in patients with the same mutation (summary by Ogiwara et al., 2009; Howell et al., 2015; Wolff et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462337">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462587"><div><strong>Hirschsprung disease, cardiac defects, and autonomic dysfunction</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462587</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.">C3151237</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/462587">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462761"><div><strong>Intellectual disability, autosomal dominant 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462761</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.">C3151411</a></dd><dt><span class="dotprefix"></span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">GRIN2B-related neurodevelopmental disorder is characterized by mild to profound developmental delay / intellectual disability (DD/ID) in all affected individuals. Muscle tone abnormalities (spasticity and/or hypotonia, occasionally associated with feeding difficulties), as well as epilepsy and autism spectrum disorder (ASD) / behavioral issues, are common. Other infantile- or childhood-onset findings include microcephaly; dystonic, dyskinetic, or choreiform movement disorder; and/or cortical visual impairment. Brain MRI reveals a malformation of cortical development in a minority of affected individuals. To date, fewer than 100 individuals with GRIN2B-related neurodevelopmental disorder have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462761">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_477139"><div><strong>Multiple congenital anomalies-hypotonia-seizures syndrome 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>477139</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.">C3275508</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Multiple congenital anomalies-hypotonia-seizures syndrome-2 (MCAHS2) is an X-linked recessive neurodevelopmental disorder characterized by dysmorphic features, neonatal hypotonia, early-onset myoclonic seizures, and variable congenital anomalies involving the central nervous, cardiac, and urinary systems. Some affected individuals die in infancy (summary by Johnston et al., 2012). The phenotype shows clinical variability with regard to severity and extraneurologic features. However, most patients present in infancy with early-onset epileptic encephalopathy associated with developmental arrest and subsequent severe neurologic disability; these features are consistent with a form of developmental and epileptic encephalopathy (DEE) (summary by Belet et al., 2014, Kato et al., 2014). The disorder is caused by a defect in glycosylphosphatidylinositol (GPI) biosynthesis.&#13; For a discussion of genetic heterogeneity of MCAHS, see MCAHS1 (614080).&#13; For a discussion of nomenclature and genetic heterogeneity of DEE, see 308350.&#13; For a discussion of genetic heterogeneity of GPI biosynthesis defects, see GPIBD1 (610293).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/477139">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482058"><div><strong>Alpha-methylacyl-CoA racemase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482058</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.">C3280428</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">AMACR deficiency is a rare autosomal recessive peroxisomal disorder characterized by adult onset of variable neurodegenerative symptoms affecting the central and peripheral nervous systems. Features may include seizures, visual failure, sensorimotor neuropathy, spasticity, migraine, and white matter hyperintensities on brain imaging. Serum pristanic acid and C27 bile acid intermediates are increased (summary by Smith et al., 2010).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482058">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482290"><div><strong>Encephalopathy, lethal, due to defective mitochondrial peroxisomal fission 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482290</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.">C3280660</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Encephalopathy due to defective mitochondrial and peroxisomal fission-1 (EMPF1) is characterized by delayed psychomotor development and hypotonia that may lead to death in childhood. Many patients develop refractory seizures, consistent with an epileptic encephalopathy, and thereafter show neurologic decline. The age at onset, features, and severity are variable, and some patients may not have clinical evidence of mitochondrial or peroxisomal dysfunction (summary by Sheffer et al., 2016; Fahrner et al., 2016).&#13; Genetic Heterogeneity of Encephalopathy Due to Defective Mitochondrial And Peroxisomal Fission&#13; See also EMPF2 (617086), caused by mutation in the MFF gene (614785) on chromosome 2q36.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482290">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_764868"><div><strong>Coenzyme Q10 deficiency, primary, 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>764868</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.">C3551954</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Primary CoQ10 deficiency is a rare, clinically heterogeneous autosomal recessive disorder caused by mutation in any of the genes encoding proteins directly involved in the synthesis of coenzyme Q (review by Quinzii and Hirano, 2011). Coenzyme Q10 (CoQ10), or ubiquinone, is a mobile lipophilic electron carrier critical for electron transfer by the mitochondrial inner membrane respiratory chain (Duncan et al., 2009).&#13; The disorder has been associated with 4 major phenotypes, but the molecular basis has not been determined in most patients with the disorder and there are no clear genotype/phenotype correlations. The phenotypes include an encephalomyopathic form with seizures and ataxia (Ogasahara et al., 1989); a multisystem infantile form with encephalopathy, cardiomyopathy and renal failure (Rotig et al., 2000); a predominantly cerebellar form with ataxia and cerebellar atrophy (Lamperti et al., 2003); and Leigh syndrome with growth retardation (van Maldergem et al., 2002). The correct diagnosis is important because some patients may show a favorable response to CoQ10 treatment.&#13; Genetic Heterogeneity of Primary Coenzyme Q10 Deficiency&#13; See also COQ10D2 (614651), caused by mutation in the PDSS1 gene (607429) on chromosome 10p12; COQ10D3 (614652), caused by mutation in the PDSS2 gene (610564) on chromosome 6q21; COQ10D4 (612016), caused by mutation in the COQ8 gene (ADCK3; 606980) on chromosome 1q42; COQ10D5 (614654), caused by mutation in the COQ9 gene (612837) on chromosome 16q21; COQ10D6 (614650), caused by mutation in the COQ6 gene (614647) on chromosome 14q24; COQ10D7 (616276), caused by mutation in the COQ4 gene (612898) on chromosome 9q34; COQ10D8 (616733), caused by mutation in the COQ7 gene (601683) on chromosome 16p13; and COQ10D9 (619028), caused by mutation in the COQ5 gene (616359) on chromosome 12q24.&#13; Secondary CoQ10 deficiency has been reported in association with glutaric aciduria type IIC (MADD; 231680), caused by mutation in the ETFDH gene (231675) on chromosome 4q, and with ataxia-oculomotor apraxia syndrome-1 (AOA1; 208920), caused by mutation in the APTX gene (606350) on chromosome 9p13.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/764868">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_766702"><div><strong>Alternating hemiplegia of childhood 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>766702</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.">C3553788</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ATP1A3-related disorder consists of heterogenous overlapping clinical findings that pertain to the four most common historically defined phenotypes: alternating hemiplegia of childhood (AHC); cerebellar ataxia, areflexia, pes cavus, optic atrophy, sensorineural hearing loss (CAPOS) syndrome; relapsing encephalopathy with cerebellar ataxia (RECA) / fever-induced paroxysmal weakness and encephalopathy (FIPWE); and rapid-onset dystonia-parkinsonism (RDP). These phenotypes exist on a spectrum and should be regarded as classifications of convenience. AHC is characterized by onset prior to age 18 months of paroxysmal hemiplegic episodes, predominately involving the limbs and/or the whole body, lasting from minutes to hours to days (and sometimes weeks) with remission only during sleep, only to resume after awakening. Although paroxysmal episodic neurologic dysfunction predominates early in the disease course, with age increasingly persistent neurologic dysfunction predominates, including oculomotor apraxia and strabismus, dysarthria, speech and language delay, developmental delay, and impairment in social skills. Other system involvement may include cardiovascular (cardiac conduction abnormalities) and gastrointestinal (constipation, vomiting, anorexia, diarrhea, nausea, and abdominal pain) manifestations. CAPOS syndrome presents in infancy or childhood (usually ages 6 months to 5 years) with cerebellar ataxia during or after a fever. The acute febrile encephalopathy may include hypotonia, flaccidity, nystagmus, strabismus, dysarthria/anarthria, lethargy, loss of consciousness, and even coma. Usually, considerable recovery occurs within days to weeks; however, persistence of some degree of ataxia and other manifestations is typical. RECA/FIPWE primarily presents with fever-induced episodes (infancy to age 5 years); however, first episodes can occur occasionally in young adults during illnesses such as mononucleosis. Recurrent fever-induced episodes may be ataxia-dominated RECA-like motor manifestations or FIPWE-like non-motor manifestations (encephalopathy) and can vary among affected individuals. Notably, RECA-like and FIPWE-like manifestations can occur in the same individual in different episodes. In some individuals episodes seem to decrease in frequency and severity over time, whereas others might experience worsening of manifestations. RDP presents in individuals ages 18 months to 60 years and older with dystonia that is typically of abrupt onset over hours to several weeks, though some individuals report gradual onset over the course of months. A stress-related trigger is identifiable in up to 75% of individuals. Dystonia rarely improves significantly after onset; some individuals report mild improvement over time, whereas others can experience subsequent episodes of abrupt worsening months to years after onset. Limbs are usually the first to be affected, although by the time of diagnosis typically many years after onset individuals most commonly display a bulbar-predominant generalized dystonia. Exceptions are common and a rostrocaudal gradient is rare rather than typical. Migraines and seizures are also observed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/766702">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767109"><div><strong>Developmental and epileptic encephalopathy, 14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767109</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.">C3554195</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">KCNT1-related epilepsy is most often associated with two phenotypes: epilepsy of infancy with migrating focal seizures (EIMFS) and autosomal dominant nocturnal frontal lobe epilepsy (ADNFLE). EIMFS is characterized by seizures, typically focal and asynchronous, beginning in the first six months of life with associated developmental plateau or regression. Autonomic manifestations (e.g., perioral cyanosis, flushing, apnea) are common. Seizures are intractable to multiple anticonvulsants and progress to become nearly continuous by age six to nine months. ADNFLE is characterized by clusters of nocturnal motor seizures that vary from simple arousals to hyperkinetic events with tonic or dystonic features. Individuals with KCNT1-related ADNFLE are more likely to develop seizures at a younger age, have cognitive comorbidity, and display psychiatric and behavioral problems than individuals with ADNFLE resulting from other causes. Less common seizure phenotypes in individuals with KCNT1-related epilepsy include West syndrome, Ohtahara syndrome, early myoclonic encephalopathy, leukodystrophy and/or leukoencephalopathy, focal epilepsy, and multifocal epilepsy. Additional neurologic features include hypotonia, microcephaly developing by age 12 months, strabismus, profound developmental delay, and additional movement disorders. Other systemic manifestations including pulmonary hemorrhage caused by prominent systemic-to-pulmonary collateral arteries or cardiac arrhythmia have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767109">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_767220"><div><strong>Autosomal dominant nocturnal frontal lobe epilepsy 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>767220</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.">C3554306</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal dominant sleep-related hypermotor (hyperkinetic) epilepsy (ADSHE) is a seizure disorder characterized by clusters of nocturnal motor seizures that are often stereotyped and brief (&lt;2 minutes). They vary from simple arousals from sleep to dramatic, often hyperkinetic events with tonic or dystonic features. Affected individuals may experience an aura. Retained awareness during seizures is common. A minority of individuals experience daytime seizures. Age of onset ranges from infancy to adulthood. About 80% of individuals develop ADSHE in the first two decades of life; mean age of onset is ten years. Clinical neurologic examination is normal and intellect is usually preserved, but reduced intellect, psychiatric comorbidities, or cognitive deficits may occur. Within a family, the manifestations of the disorder may vary considerably. ADSHE is lifelong but not progressive. As an individual reaches middle age, seizures may become milder and less frequent.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/767220">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_813060"><div><strong>X-linked intellectual disability, Cantagrel type</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>813060</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.">C3806730</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked intellectual developmental disorder-98 (XLID98) is a neurodevelopmental disorder characterized by delayed psychomotor development, poor speech, behavioral abnormalities, poor overall growth, dysmorphic facial features, and often early-onset seizures. Some carrier females are unaffected, whereas other females with mutations are affected; males tend to be more severely affected than females. It is believed that the phenotypic variability and disease manifestations in female carriers results from skewed X-inactivation or cellular mosaicism (summary by de Lange et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/813060">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815503"><div><strong>Developmental and epileptic encephalopathy, 16</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815503</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.">C3809173</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">TBC1D24-related disorders comprise a continuum of features that were originally described as distinct, recognized phenotypes: DOORS syndrome (deafness, onychodystrophy, osteodystrophy, mental retardation, and seizures), with profound sensorineural hearing loss, onychodystrophy, osteodystrophy, intellectual disability / developmental delay, and seizures; familial infantile myoclonic epilepsy (FIME), with early-onset myoclonic seizures, focal epilepsy, dysarthria, and mild-to-moderate intellectual disability; progressive myoclonus epilepsy (PME), with action myoclonus, tonic-clonic seizures, ataxia, and progressive neurologic decline; rolandic epilepsy with paroxysmal exercise-induced dystonia and writer's cramp (EPRPDC); developmental and epileptic encephalopathy (DEE), including epilepsy of infancy with migrating focal seizures (EIMFS); autosomal recessive nonsyndromic hearing loss (DFNB); and autosomal dominant nonsyndromic hearing loss (DFNA).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815503">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815608"><div><strong>Developmental and epileptic encephalopathy 94</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815608</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.">C3809278</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">CHD2-related neurodevelopmental disorders are characterized by early-onset epileptic encephalopathy (i.e., refractory seizures and cognitive slowing or regression associated with frequent ongoing epileptiform activity). Seizure onset is typically between ages six months and four years. Seizure types typically include drop attacks, myoclonus, and rapid onset of multiple seizure types associated with generalized spike-wave on EEG, atonic-myoclonic-absence seizures, and clinical photosensitivity. Intellectual disability and/or autism spectrum disorders are common.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815608">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816174"><div><strong>Chromosome 22q13 duplication syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816174</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.">C3809844</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/816174">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816595"><div><strong>Warburg micro syndrome 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816595</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.">C3810265</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">RAB18 deficiency is the molecular deficit underlying both Warburg micro syndrome (characterized by eye, nervous system, and endocrine abnormalities) and Martsolf syndrome (characterized by similar but milder findings). To date Warburg micro syndrome comprises &gt;96% of reported individuals with genetically defined RAB18 deficiency. The hallmark ophthalmologic findings are bilateral congenital cataracts, usually accompanied by microphthalmia, microcornea (diameter &lt;10), and small atonic pupils. Poor vision despite early cataract surgery likely results from progressive optic atrophy and cortical visual impairment. Individuals with Warburg micro syndrome have severe to profound intellectual disability (ID); those with Martsolf syndrome have mild to moderate ID. Some individuals with RAB18 deficiency also have epilepsy. In Warburg micro syndrome, a progressive ascending spastic paraplegia typically begins with spastic diplegia and contractures during the first year, followed by upper-limb involvement leading to spastic quadriplegia after about age five years, often eventually causing breathing difficulties. In Martsolf syndrome infantile hypotonia is followed primarily by slowly progressive lower-limb spasticity. Hypogonadism when present manifests in both syndromes, in males as micropenis and/or cryptorchidism and in females as hypoplastic labia minora, clitoral hypoplasia, and small introitus.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816595">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816615"><div><strong>Proximal myopathy with extrapyramidal signs</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816615</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.">C3810285</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Myopathy with extrapyramidal signs is an autosomal recessive disorder characterized by early childhood onset of proximal muscle weakness and learning disabilities. While the muscle weakness is static, most patients develop progressive extrapyramidal signs that may become disabling (summary by Logan et al., 2014). Brain MRI in 1 patient showed congenital malformations, including polymicrogyria and cerebellar dysplasia (Wilton et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816615">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816650"><div><strong>Familial temporal lobe epilepsy 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816650</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.">C3810320</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A temporal lobe epilepsy that has material basis in variation in the chromosome region 3q25-q26.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816650">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_816730"><div><strong>Developmental and epileptic encephalopathy, 19</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>816730</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.">C3810400</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-19 (DEE19) is a neurologic disorder characterized by the onset of various types of seizures in the first year of life, usually between 8 and 12 months of age. Seizures are often triggered by fever, and status epilepticus may occur. Affected individuals subsequently show mildly to moderately impaired intellectual development. Brain imaging is typically normal. The clinical phenotype is similar to that of Dravet syndrome (DRVT; 607208) (summary by Carvill et al., 2014).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/816730">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862085"><div><strong>Bilateral parasagittal parieto-occipital polymicrogyria</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862085</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.">C4013648</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Polymicrogyria is a condition characterized by abnormal development of the brain before birth. The surface of the brain normally has many ridges or folds, called gyri. In people with polymicrogyria, the brain develops too many folds, and the folds are unusually small. The name of this condition literally means too many (poly-) small (micro-) folds (-gyria) in the surface of the brain.\n\nPolymicrogyria can affect part of the brain or the whole brain. When the condition affects one side of the brain, researchers describe it as unilateral. When it affects both sides of the brain, it is described as bilateral. The signs and symptoms associated with polymicrogyria depend on how much of the brain, and which particular brain regions, are affected.\n\nResearchers have identified multiple forms of polymicrogyria. The mildest form is known as unilateral focal polymicrogyria. This form of the condition affects a relatively small area on one side of the brain. It may cause minor neurological problems, such as mild seizures that can be easily controlled with medication. Some people with unilateral focal polymicrogyria do not have any problems associated with the condition.\n\nPolymicrogyria most often occurs as an isolated feature, although it can occur with other brain abnormalities. It is also a feature of several genetic syndromes characterized by intellectual disability and multiple birth defects. These include 22q11.2 deletion syndrome, Adams-Oliver syndrome, Aicardi syndrome, Galloway-Mowat syndrome, Joubert syndrome, and Zellweger spectrum disorder.\n\nBilateral forms of polymicrogyria tend to cause more severe neurological problems. Signs and symptoms of these conditions can include recurrent seizures (epilepsy), delayed development, crossed eyes, problems with speech and swallowing, and muscle weakness or paralysis. The most severe form of the disorder, bilateral generalized polymicrogyria, affects the entire brain. This condition causes severe intellectual disability, problems with movement, and seizures that are difficult or impossible to control with medication.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862085">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862676"><div><strong>Diffuse cerebral and cerebellar atrophy - intractable seizures - progressive microcephaly syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862676</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.">C4014239</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Progressive microcephaly with seizures and cerebral and cerebellar atrophy is a severe autosomal recessive neurodevelopmental and neurodegenerative disorder with onset in the first days or months of life. Patients are born with microcephaly and soon develop intractable seizures, resulting in profoundly delayed development and hypotonia (summary by Zhang et al., 2014).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862676">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862845"><div><strong>Mitochondrial complex III deficiency nuclear type 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862845</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.">C4014408</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any mitochondrial complex III deficiency in which the cause of the disease is a mutation in the UQCC2 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862845">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_862968"><div><strong>Developmental and epileptic encephalopathy, 24</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>862968</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.">C4014531</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-24 (DEE24) is a neurologic disorder characterized by onset of refractory seizures in infancy, severely impaired global development, intellectual disability, and behavioral abnormalities. Most patients have onset of variable types of seizures between 4 and 13 months of age, but earlier onset in the first days of life has also been reported. Seizures are often triggered by fever, at least initially; status epilepticus may occur (summary by Nava et al., 2014 and Marini et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/862968">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863058"><div><strong>Developmental and epileptic encephalopathy, 25</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863058</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.">C4014621</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-25 with amelogenesis imperfecta (DEE25) is an autosomal recessive neurologic disorder characterized by the onset of refractory seizures in early infancy. Most patients present with seizures in the neonatal period, which is often associated with status epilepticus. However, there is phenotypic variability, and some patients have onset of seizures later in infancy. Affected individuals show global developmental delay with intellectual disability and poor speech and communication. The seizures may remit somewhat with age, but there are persistent neurologic symptoms, including ataxia, spasticity, and abnormal involuntary movements. In addition to neurologic deficits, patients also have dental anomalies with amelogenesis imperfecta (summary by Thevenon et al., 2014 and Schossig et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863058">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863632"><div><strong>Immunodeficiency 37</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863632</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.">C4015195</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any primary immunodeficiency disease in which the cause of the disease is a mutation in the BCL10 gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863632">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_863956"><div><strong>Developmental and epileptic encephalopathy, 28</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>863956</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.">C4015519</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-28 (DEE28) is an autosomal recessive severe neurologic disorder characterized by the onset of refractory seizures in the first months of life. Affected individuals have severe axial hypotonia and profoundly impaired psychomotor development. More severely affected patients have acquired microcephaly, poor or absent visual contact, and retinal degeneration; early death may occur (summary by Mignot et al., 2015).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/863956">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_864080"><div><strong>Combined oxidative phosphorylation defect type 24</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>864080</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.">C4015643</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Combined oxidative phosphorylation deficiency-24 (COXPD24) is an autosomal recessive mitochondrial disorder with wide phenotypic variability. Most patients present in infancy with delayed neurodevelopment, refractory seizures, hypotonia, and hearing impairment due to auditory neuropathy. Less common features may include cortical blindness, renal dysfunction, and/or liver involvement, suggestive of Alpers syndrome (MTDPS4A; 203700). Patients with the severe phenotype tend to have brain abnormalities on imaging, including cerebral atrophy and hyperintensities in the basal ganglia and brainstem, consistent with Leigh syndrome. Laboratory values may be normal or show increased lactate and evidence of mitochondrial respiratory chain defects, particularly in muscle. Some patients achieve little developmental milestones and may die in infancy or early childhood. However, some patients have a less severe phenotype manifest only by myopathy (summary by Sofou et al., 2015, Vanlander et al., 2015, and Mizuguchi et al., 2017).&#13; For a discussion of genetic heterogeneity of combined oxidative phosphorylation deficiency, see COXPD1 (609060).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/864080">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_904159"><div><strong>Developmental and epileptic encephalopathy, 35</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>904159</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.">C4225256</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-35 (DEE35) is an autosomal recessive neurodegenerative disorder characterized by onset of seizures in the first months of life associated with essentially no normal development. Brain imaging shows a characteristic pattern consistent with lack of myelination of early structures, including the posterior limb of the internal capsule, brainstem tracts, and tracts to the primary visual and motor cortices. Many patients die in early childhood (summary by Kevelam et al., 2015)&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/904159">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_899149"><div><strong>Developmental and epileptic encephalopathy, 34</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>899149</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.">C4225257</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">SLC12A5-related epilepsy of infancy with migrating focal seizures (SLC12A5-EIMFS), reported to date in nine children, is characterized by onset of seizures before age six months and either developmental delay or developmental regression with seizure onset. Of these nine children, six had severe developmental delay with no progress of abilities and three made notable neurodevelopmental progress. Eight had postnatal microcephaly and hypotonia. In most children epilepsy begins as focal motor seizures (typically involving head and eye deviation) that become multifocal and intractable to conventional anti-seizure medication (ASM).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/899149">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_901242"><div><strong>Progressive myoclonic epilepsy type 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>901242</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.">C4225289</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Progressive myoclonic epilepsy-9 (EPM9) is an autosomal recessive disorder characterized by onset of myoclonic seizures between 6 and 7 years of age, with progression to falling and tonic-clonic seizures, severe action myoclonus, and neurologic decline. Diffuse muscle wasting and loss of subcutaneous fat are present (Damiano et al., 2015).&#13; For a discussion of genetic heterogeneity of progressive myoclonic epilepsy, see EPM1A (254800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/901242">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_904125"><div><strong>Developmental and epileptic encephalopathy, 50</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>904125</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.">C4225320</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-50 (DEE50) is an autosomal recessive progressive neurodegenerative neurometabolic disorder characterized by delayed psychomotor development, early-onset refractory seizures, severe developmental regression, and normocytic anemia. Onset is within the first months or years of life. Evidence suggests that affected children can have a favorable response to treatment with uridine (summary by Koch et al., 2017).&#13; For a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/904125">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934604"><div><strong>Developmental and epileptic encephalopathy, 48</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934604</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.">C4310637</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-48 (DEE48) is a severe autosomal recessive neurologic disorder characterized by global developmental delay with intellectual disability and absent speech; poor, if any, motor development; and onset of seizures usually in the first year of life, although later onset has been reported. Affected individuals have poor eye contact and may develop microcephaly and abnormal movements (summary by Assoum et al., 2016).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934604">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934650"><div><strong>Intellectual disability-epilepsy-extrapyramidal syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934650</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.">C4310683</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia and impaired expressive language and with or without seizures (NEDHELS) is an autosomal recessive disorder characterized by hypotonia, poor feeding, and global developmental delay apparent from infancy. Most patients have poor overall growth, poor eye contact, sleep disturbances, and severely impaired expressive language. Affected individuals also tend to have behavioral problems, microcephaly, and variable dysmorphic features; many develop seizures. Brain imaging may show enlarged ventricles, thin corpus callosum and brainstem, and white matter abnormalities. The phenotype is variable (summary by Nabais Sa et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934650">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934652"><div><strong>Developmental and epileptic encephalopathy, 47</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934652</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.">C4310685</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-47 (DEE47) is a neurologic disorder characterized by onset of intractable seizures in the first days or weeks of life. EEG shows background slowing and multifocal epileptic spikes, and may show hypsarrhythmia. Most patients have developmental regression after seizure onset and show persistent intellectual disability and neurologic impairment, although the severity is variable. Treatment with phenytoin, a voltage-gated sodium channel blocker, may be beneficial (summary by Guella et al., 2016).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934652">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934663"><div><strong>ZTTK syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934663</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.">C4310696</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ZTTK syndrome (ZTTKS) is a severe multisystem developmental disorder characterized by delayed psychomotor development and intellectual disability. Affected individuals have characteristic dysmorphic facial features, hypotonia, poor feeding, poor overall growth, and eye or visual abnormalities. Most patients also have musculoskeletal abnormalities, and some have congenital defects of the heart and urogenital system. Brain imaging usually shows developmental abnormalities such as gyral changes, cortical and/or cerebellar atrophy, and thin corpus callosum (summary by Kim et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934663">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934694"><div><strong>Congenital disorder of glycosylation, type IAA</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934694</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.">C4310727</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/934694">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934729"><div><strong>Developmental and epileptic encephalopathy, 38</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934729</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.">C4310762</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-38 (DEE38) is an autosomal recessive neurologic and neurodegenerative disorder characterized by the onset of various type of seizures usually between about 4 and 7 months of age. Prior to the onset of seizures, most infants show severely impaired global development, hypotonia with poor head control, and visual inattention with roving eye movements and nystagmus. Seizures are usually refractory to treatment and associated with status epilepticus. Patients have little or no development with inability to walk or speak, spasticity or abnormal movements, and often cortical blindness. There is failure to thrive, and many require tube-feeding. Death in early childhood due to aspiration or intractable epilepsy may occur. The disorder is associated with a defect in GPI-anchoring of membrane-bound proteins (summary by Palmer et al., 2016; Davids et al., 2020).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.&#13; For a discussion of genetic heterogeneity of GPI biosynthesis defects, see GPIBD1 (610293).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934729">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_934741"><div><strong>Intellectual disability, autosomal dominant 42</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>934741</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.">C4310774</a></dd><dt><span class="dotprefix"></span></dt><dd>Mental or Behavioral Dysfunction</dd></dl></div></div></div>
<div class="spaceAbove">GNB1 encephalopathy (GNB1-E) is characterized by moderate-to-severe developmental delay / intellectual disability, structural brain abnormalities, and often infantile hypotonia and seizures. Other less common findings include dystonia, reduced vision, behavior issues, growth delay, gastrointestinal (GI) problems, genitourinary (GU) abnormalities in males, and cutaneous mastocytosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/934741">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1621755"><div><strong>Developmental and epileptic encephalopathy, 56</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1621755</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.">C4540034</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-56 (DEE56) is a neurodevelopmental disorder characterized by early-onset seizures in most patients, followed by impaired intellectual development, variable behavioral abnormalities, and sometimes additional neurologic features, such as ataxia (summary by Guella et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1621755">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1626137"><div><strong>Developmental and epileptic encephalopathy 91</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1626137</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.">C4540199</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-91 (DEE91) is characterized by delayed psychomotor development apparent in infancy and resulting in severely to profoundly impaired intellectual development with poor or absent speech. Most patients never achieve independent walking. Patients typically have onset of refractory multifocal seizures between the first weeks and years of life, and some may show developmental regression. Additional features, such as hypotonia and cortical visual impairment, are more variable (summary by Myers et al., 2017).&#13; For a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1626137">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1615361"><div><strong>Neurodevelopmental disorder with microcephaly, seizures, and cortical atrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1615361</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.">C4540493</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with microcephaly, seizures, and cortical atrophy (NDMSCA) is an autosomal recessive disorder characterized by severe global developmental delay with poor motor and intellectual function apparent soon after birth, as well as postnatal progressive microcephaly. Most patients develop early-onset, frequent, and often intractable seizures, compatible with an epileptic encephalopathy. Other features include poor feeding, poor overall growth, absent speech, poor or absent eye contact, inability to achieve walking, hypotonia, and peripheral spasticity. Brain imaging usually shows progressive cerebral atrophy, thin corpus callosum, and abnormalities in myelination. Death in childhood may occur (summary by Siekierska et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1615361">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1646861"><div><strong>Developmental and epileptic encephalopathy, 58</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1646861</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.">C4693367</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-58 (DEE58) is a severe neurodevelopmental disorder characterized by the onset of infantile spasms and refractory seizures in the first days or months of life. Affected individuals have global developmental delay with impaired intellectual development, usually with absent speech and inability to walk. Additional features include optic atrophy with poor or absent visual fixation, hypotonia, feeding difficulties, and spasticity (summary by Hamdan et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1646861">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1645968"><div><strong>Neurodevelopmental disorder with or without seizures and gait abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1645968</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.">C4693391</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with or without seizures and gait abnormalities (NEDSGA) is an autosomal dominant disorder characterized by global developmental delay apparent from infancy or early childhood, resulting in variably impaired intellectual development that can range from profound with absent speech to mild with an ability to attend special schools. Most affected individuals show irritability, stiffness, and hypertonia early in life, which progresses to spasticity and impaired gait later. Some patients may develop seizures of variable severity early in life (summary by Martin et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1645968">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1633501"><div><strong>Developmental and epileptic encephalopathy, 64</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1633501</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.">C4693899</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-64 (DEE64) is a neurodevelopmental disorder characterized by onset of seizures usually in the first year of life and associated with intellectual disability, poor motor development, and poor or absent speech. Additional features include hypotonia, abnormal movements, and nonspecific dysmorphic features. The severity is variable: some patients are unable to speak, walk, or interact with others as late as the teenage years, whereas others may have some comprehension (summary by Straub et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1633501">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648486"><div><strong>Developmental and epileptic encephalopathy, 66</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648486</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.">C4748070</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-66 (DEE66) is a neurologic disorder characterized by the onset of various types of seizures in the first days or weeks of life. Most seizures have focal origins; secondary generalization is common. Seizure control is difficult at first, but may become easier with time. Affected individuals show global developmental delay with hypotonia, behavioral abnormalities, and dysmorphic features or ophthalmologic defects. Brain imaging often shows cerebellar dysgenesis. A subset of patients have extraneurologic manifestations, including hematologic and distal limb abnormalities (summary by Olson et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648486">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648478"><div><strong>Glycosylphosphatidylinositol biosynthesis defect 18</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648478</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.">C4748357</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-95 (DEE95) is a severe autosomal recessive disorder characterized by severely impaired global development, hypotonia, weakness, ataxia, coarse facial features, and intractable seizures. More variable features may include abnormalities of the hands and feet, inguinal hernia, and feeding difficulties. The disorder is part of a group of similar neurologic disorders resulting from biochemical defects in the glycosylphosphatidylinositol (GPI) biosynthetic pathway (summary by Nguyen et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.&#13; For a discussion of genetic heterogeneity of GPI biosynthesis defects, see GPIBD1 (610293).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648478">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648479"><div><strong>Developmental and epileptic encephalopathy, 68</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648479</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.">C4748688</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-68 (DEE68) is an autosomal recessive neurologic disorder characterized by onset of twitching and/or myoclonic jerks in infancy. The disorder progresses to refractory generalized tonic-clonic seizures, often resulting in status epilepticus, loss of developmental milestones, and early death. Other features include delayed development, axial hypotonia, spasticity of the limbs, and clonus. Brain imaging may show cortical atrophy (summary by Barel et al., 2017).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648479">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648420"><div><strong>Mitochondrial complex 1 deficiency, nuclear type 33</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648420</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.">C4748840</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/1648420">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648381"><div><strong>Developmental and epileptic encephalopathy, 69</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648381</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.">C4748988</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-69 (DEE69) is an autosomal dominant severe neurodevelopmental encephalopathic disorder characterized by early-onset refractory seizures, hypotonia, and profoundly impaired development often associated with macrocephaly, hyperkinetic movements, and contractures. The disorder can sometimes result in early death. Some patients may have a favorable seizure response to topiramate medication (summary by Helbig et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648381">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1658844"><div><strong>Ferro-cerebro-cutaneous syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1658844</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.">C4751570</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">A rare genetic metabolic liver disease with characteristics of progressive neurodegeneration, cutaneous abnormalities including varying degrees of ichthyosis or seborrheic dermatitis, and systemic iron overload. Patients manifest with infantile-onset seizures, encephalopathy, abnormal eye movements, axial hypotonia with peripheral hypertonia, brisk reflexes, cortical blindness and deafness, myoclonus and hepato/splenomegaly, as well as oral manifestations including microdontia, widely spaced and pointed teeth with delayed eruption and gingival overgrowth.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1658844">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1675904"><div><strong>Hypomagnesemia, seizures, and intellectual disability 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1675904</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.">C5193023</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypomagnesemia, seizures, and impaired intellectual development-2 (HOMGSMR2) is characterized by generalized seizures in infancy, severe hypomagnesemia, and renal magnesium wasting. Seizures persist despite magnesium supplementation and are associated with significantly impaired intellectual development (Schlingmann et al., 2018).&#13; For a discussion of genetic heterogeneity of hypomagnesemia, seizures, and impaired intellectual development, see HOMGSMR1 (616418).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1675904">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1682670"><div><strong>Encephalopathy, progressive, early-onset, with episodic rhabdomyolysis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1682670</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.">C5193033</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/1682670">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1676229"><div><strong>Microcephaly, growth deficiency, seizures, and brain malformations</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1676229</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.">C5193042</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Microcephaly, growth deficiency, seizures, and brain malformations (MIGSB) is a severe autosomal recessive disorder characterized by intrauterine growth retardation, postnatal growth deficiency with severe microcephaly, and poor or absent psychomotor development. Additional features include optic atrophy, early-onset seizures, dysmorphic facial features, and brain malformations, such as partial agenesis of the corpus callosum and simplified gyration (summary by Shaheen et al., 2015).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1676229">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684724"><div><strong>Developmental and epileptic encephalopathy, 78</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684724</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.">C5231409</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-78 (DEE78) is a severe neurologic disorder characterized by onset of refractory seizures in the first days or months of life followed by severely impaired intellectual development. Additional features may include cortical visual impairment, hypotonia, and abnormal movements, such as spasticity (summary by Butler et al., 2018). One family with an attenuated disease course has been reported (Maljevic et al., 2019).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684724">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684738"><div><strong>Developmental and epileptic encephalopathy, 79</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684738</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.">C5231410</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-79 (DEE79) is a severe neurologic disorder characterized by onset of refractory seizures in the first months of life. Affected individuals have severely impaired psychomotor development and may show hypotonia or spasticity. Brain imaging may show hypomyelination, cerebral atrophy, and thinning of the corpus callosum (summary by Butler et al., 2018 and Hernandez et al., 2019).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684738">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684823"><div><strong>Mitochondrial DNA depletion syndrome 17</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684823</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.">C5231412</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial depletion syndrome-17 (MTDPS17) is an autosomal recessive dystonic or movement disorder (summary by Shafique et al., 2023).&#13; For a discussion of genetic heterogeneity of autosomal recessive mtDNA depletion syndromes, see MTDPS1 (603041).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684823">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684871"><div><strong>Neurodevelopmental disorder with ataxia, hypotonia, and microcephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684871</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.">C5231413</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/1684871">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684708"><div><strong>Pontocerebellar hypoplasia, type 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684708</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.">C5231425</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Pontocerebellar hypoplasia type 13 (PCH13) is an autosomal recessive disorder characterized by global developmental delay, impaired intellectual development with absent speech, microcephaly, and progressive atrophy of the cerebellar vermis and brainstem. Additional features, including seizures and visual impairment, are variable (summary by Uwineza et al., 2019).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of PCH, see PCH1A (607596).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684708">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684812"><div><strong>Intellectual developmental disorder with short stature and behavioral abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684812</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.">C5231462</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/1684812">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684847"><div><strong>Liang-Wang syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684847</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.">C5231479</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Liang-Wang syndrome (LIWAS) is a polymalformation syndrome apparent from birth that shows large phenotypic variability and severity. However, all patients have some degree of neurologic dysfunction. The most severely affected individuals have severe global developmental delay with impaired intellectual development and poor or absent speech, marked craniofacial dysmorphism, and visceral and connective tissue abnormalities affecting the bones and vessels. The least severely affected individuals lack seizures, significant dysmorphism, and visceral involvement; they come to attention for neurologic signs and symptoms, including developmental delay with speech delay, strabismus, and/or ataxia. About half of patients have brain imaging anomalies, notably cerebral and cerebellar atrophy and thin corpus callosum, whereas the other half have normal brain imaging (summary by Liang et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684847">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1718781"><div><strong>Microcephaly, developmental delay, and brittle hair syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1718781</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.">C5394425</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Microcephaly, developmental delay, and brittle hair syndrome (MDBH) is a multisystem disorder with clinical variability. Affected individuals show cognitive and motor disabilities, as well as some degree of fine, brittle hair with microscopic shaft abnormalities. Other shared features include failure to thrive in early childhood and short stature, with some patients exhibiting feeding difficulties and hepatic steatosis (Kuo et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1718781">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1708579"><div><strong>Neurodevelopmental disorder with seizures, hypotonia, and brain imaging abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1708579</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.">C5394517</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with seizures, hypotonia, and brain imaging abnormalities (NEDSHBA) is an autosomal recessive neurodevelopmental disorder characterized by global developmental delay, severe to profound intellectual impairment, early-onset refractory seizures, hypotonia, failure to thrive, and progressive microcephaly. Brain imaging shows cerebral atrophy, thin corpus callosum, and myelination defects. Death in childhood may occur (summary by Marafi et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1708579">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1714171"><div><strong>Episodic ataxia, type 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1714171</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.">C5394520</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Episodic ataxia type 9 (EA9) is a neurologic disorder characterized by onset of ataxic episodes in the first years of life. Features may include difficulty walking, dizziness, slurred speech, headache, vomiting, and pain. The ataxic episodes vary in frequency and duration; most tend to occur every few weeks or months and last minutes to hours. Prior to the EA, most patients have neonatal- or infantile-onset tonic or generalized tonic-clonic (GTC) seizures that may be severe and refractory to medication, but remit later in infancy or early childhood, either spontaneously or concurrently with medication. Some patients have mildly delayed development with speech delay and/or autistic features or mildly impaired intellectual development. However, others show normal psychomotor development. Treatment of the ataxic episodes with acetazolamide is effective in about 50% of patients (summary by Schwarz et al., 2019).&#13; For a phenotypic description and discussion of genetic heterogeneity of episodic ataxia, see EA1 (160120).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1714171">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1764816"><div><strong>Mitochondrial complex 4 deficiency, nuclear type 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1764816</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.">C5436682</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex IV deficiency nuclear type 3 (MC4DN3) is an autosomal recessive multisystem metabolic disorder with a highly variable phenotype. Some patients present with encephalomyopathic features in early infancy, whereas others may present later in infancy or the first years of life after normal early development. Affected individuals show hypotonia, failure to thrive, and developmental delay or regression with poor eye contact and loss of motor skills with ataxia. Additional features observed in some patients include proximal renal tubulopathy, macrocytic anemia, sensorineural hearing loss, nystagmus, and hypertrophic cardiomyopathy, consistent with systemic involvement. Brain imaging in most patients shows lesions consistent with Leigh syndrome (see 256000). Laboratory studies show increased serum lactate and decreased levels and activity of mitochondrial respiratory complex IV. Most patients die in infancy (summary by Valnot et al., 2000 and Antonicka et al., 2003).&#13; For a discussion of genetic heterogeneity of mitochondrial complex IV (cytochrome c oxidase) deficiency, see 220110.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1764816">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1745691"><div><strong>Mitochondrial complex 4 deficiency, nuclear type 12</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1745691</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.">C5436695</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial complex IV deficiency nuclear type 12 (MC4DN12) is an autosomal recessive metabolic disorder characterized by the onset of neurologic dysfunction in early infancy. Affected individuals demonstrate hypotonia with poor head control, profoundly delayed global development with inability to fix and follow, poor overall growth, abnormal spasms or myoclonus, and seizures. Most patients die in the first years of life; those that survive have spastic quadriplegia, feeding difficulties necessitating tube feeding, and profoundly impaired intellectual development with poor or absent communication. More variable features include cortical blindness, nystagmus, scoliosis, and hearing impairment. Brain imaging shows abnormalities consistent with Leigh syndrome (see 256000), as well as cystic cavitation. Laboratory studies show lactic acidosis, increased serum creatine kinase, and decreased levels and activity of mitochondrial respiratory complex IV (summary by Lim et al., 2014).&#13; For a discussion of genetic heterogeneity of mitochondrial complex IV (cytochrome c oxidase) deficiency, see 220110.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1745691">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1781649"><div><strong>Kohlschutter-Tonz syndrome-like</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1781649</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.">C5543202</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Den Hoed-de Boer-Voisin syndrome (DHDBV) is characterized by global developmental delay with moderately to severely impaired intellectual development, poor or absent speech, and delayed motor skills. Although the severity of the disorder varies, many patients are nonverbal and have hypotonia with inability to sit or walk. Early-onset epilepsy is common and may be refractory to treatment, leading to epileptic encephalopathy and further interruption of developmental progress. Most patients have feeding difficulties with poor overall growth and dysmorphic facial features, as well as significant dental anomalies resembling amelogenesis imperfecta. The phenotype is reminiscent of Kohlschutter-Tonz syndrome (KTZS; 226750). More variable features of DHDBV include visual defects, behavioral abnormalities, and nonspecific involvement of other organ systems (summary by den Hoed et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1781649">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1783339"><div><strong>Mitochondrial complex 1 deficiency, nuclear type 37</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1783339</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.">C5543281</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/1783339">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794228"><div><strong>Developmental and epileptic encephalopathy 99</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794228</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.">C5562018</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-99 (DEE99) is characterized by onset of seizures in early childhood associated with global developmental delay and severely impaired intellectual development. Other features may include hypotonia, quadriparesis, nystagmus, and apnea. Brain imaging may be normal or show nonspecific and variable abnormalities, including cerebral atrophy and polymicrogyria. The severity is variable; some patients die of refractory status epilepticus (summary by Vetro et al., 2021).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794228">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1794276"><div><strong>Yoon-Bellen neurodevelopmental syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1794276</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.">C5562066</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Yoon-Bellen neurodevelopmental syndrome (YOBELN) is an autosomal recessive disorder characterized mainly by global developmental delay with variably impaired intellectual development. The manifestations and severity of the phenotype are highly variable. Additional neurologic features may include hypotonia, spasticity, ataxia, hearing loss, visual problems, seizures, and nonspecific anomalies on brain imaging (summary by Yap et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1794276">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1798903"><div><strong>Hypotonia, infantile, with psychomotor retardation and characteristic facies 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1798903</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.">C5567480</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Infantile hypotonia with psychomotor retardation and characteristic facies-3 is a severe autosomal recessive neurodevelopmental disorder with onset at birth or in early infancy. Most affected individuals show very poor, if any, normal psychomotor development, poor speech, and inability to walk independently (summary by Bhoj et al., 2016).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of infantile hypotonia with psychomotor retardation and characteristic facies, see IHPRF1 (615419).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1798903">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1798947"><div><strong>Recurrent metabolic encephalomyopathic crises-rhabdomyolysis-cardiac arrhythmia-intellectual disability syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1798947</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.">C5567524</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">TANGO2 deficiency is characterized by developmental delay, intellectual disability, gait incoordination, speech difficulties, seizures, and hypothyroidism. Most individuals have TANGO2 spells, non-life-threatening paroxysmal worsening of baseline symptoms, including sudden onset of hypotonia, ataxia with loss of balance, head and body tilt, increased dysarthria, drooling, lethargy, and disorientation. In addition, life-threatening acute metabolic crises can occur, including rhabdomyolysis with elevated creatine phosphokinase and liver transaminases, hypoglycemia, prolonged QTc on EKG, ventricular arrhythmias, and/or cardiomyopathy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1798947">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1799031"><div><strong>Combined oxidative phosphorylation defect type 27</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1799031</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.">C5567608</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Combined oxidative phosphorylation deficiency-27 (COXPD27) is an autosomal recessive multisystem disorder characterized mainly by neurologic features, including delayed development, seizures, abnormal movements, and neurologic regression. Age at onset, ranging from infancy to late childhood, and severity are variable. Other features include hypotonia, myoclonus, brain imaging abnormalities, and evidence of mitochondrial dysfunction in skeletal muscle. Liver dysfunction has also been reported (summary by Samanta et al., 2018).&#13; For a discussion of genetic heterogeneity of combined oxidative phosphorylation deficiency, see COXPD1 (609060).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1799031">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1801540"><div><strong>Neurodegeneration, childhood-onset, with progressive microcephaly</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1801540</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.">C5676972</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Childhood-onset neurodegeneration with progressive microcephaly (CONPM) is an autosomal recessive neurodevelopmental disorder characterized by global developmental delay apparent from infancy. The phenotype is highly variable: the most severely affected individuals have severe and progressive microcephaly, early-onset seizures, lack of visual tracking, and almost no developmental milestones, resulting in early death. Less severely affected individuals have a small head circumference and severely impaired intellectual development with poor speech and motor delay. Additional features may include poor overall growth, axial hypotonia, limb hypertonia with spasticity, undescended testes, and cerebral atrophy with neuronal loss (Lam et al., 2019 and Vanoevelen et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1801540">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824058"><div><strong>Neurodevelopmental disorder with hypotonia, dysmorphic facies, and skin abnormalities</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824058</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.">C5774285</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with hypotonia, dysmorphic facies, and skin abnormalities (NEDHFS) is an autosomal recessive disorder characterized by severe global developmental delay with impaired intellectual development and poor or absent speech. Affected individuals have dysmorphic facies, including large abnormally shaped ears and strabismus, hypotonia, and dry skin with keratosis pilaris. Some patients develop seizures. Metabolic studies are unremarkable (Morava et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824058">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1824067"><div><strong>Congenital disorder of glycosylation, type IIy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1824067</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.">C5774294</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital disorder of glycosylation type IIy (CDG2Y) is an autosomal recessive multisystemic congenital disorder characterized by poor overall growth and global developmental delay with impaired intellectual development. Other features may include hypotonia, seizures, brain imaging abnormalities, dysmorphic features, and various skeletal defects. Laboratory studies show a subtle type II glycosylation defect of serum transferrin (Tambe et al., 2020).&#13; For a general discussion of CDGs, see CDG1A (212065).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1824067">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841001"><div><strong>Neurodevelopmental disorder with language delay and behavioral abnormalities, with or without seizures</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841001</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.">C5830365</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with language delay and behavioral abnormalities, with or without seizures (NEDLBAS), is characterized by global developmental delay with variably impaired intellectual development apparent from infancy or early childhood. Affected individuals have significant speech delay, and most demonstrate behavioral abnormalities, including autistic features. About half of patients develop seizures, which may be controlled or refractory. More variable features include hypotonia, feeding difficulties, and subtle facial dysmorphism (Schalk et al., 2022).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841001">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1841264"><div><strong>Megalencephalic leukoencephalopathy with subcortical cysts 4, remitting</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1841264</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.">C5830628</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Remitting megalencephalic leukoencephalopathy with subcortical cysts-4 (MLC4) is an autosomal recessive neurologic disorder characterized by macrocephaly in infancy associated with developmental delay, delayed walking, variable cognitive decline, behavioral abnormalities, and early-onset seizures. The severity of neurologic dysfunction is variable, even within a family, but tends to show improvement with time. Brain imaging shows swelling of the cerebral white matter and subcortical cysts in the anterior temporal region, consistent with MLC. Brain imaging abnormalities also tend to improve with time, indicating a remitting disease course (Passchier et al., 2023).&#13; For a discussion of genetic heterogeneity of megalencephalic leukoencephalopathy with subcortical cysts, see MLC1 (604004).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1841264">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1845523"><div><strong>Developmental and epileptic encephalopathy 112</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1845523</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.">C5882700</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-112 (DEE112) is an autosomal dominant disorder characterized by a wide range of seizure types, including focal and generalized seizures. Cognitive outcomes range from normal intellect to profound impairment (summary by Happ et al., 2023).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1845523">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1854360"><div><strong>Jeffries-Lakhani neurodevelopmental syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1854360</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.">C5935596</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Jeffries-Lakhani neurodevelopmental syndrome (JELANS) is an autosomal recessive disorder characterized by hypotonia, early-onset seizures, and global developmental delay apparent from infancy. Affected individuals have motor delay, speech delay, and impaired intellectual development, and about half of patients are nonambulatory and/or nonverbal. Some patients have cardiac arrhythmia, but congenital cardiac septal defects are only rarely observed. Additional features may include feeding difficulties, recurrent infections, ocular defects, and nonspecific dysmorphic features. Premature death due to cardiac arrhythmia or epilepsy may occur (Jeffries et al., 2024).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1854360">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1860189"><div><strong>Developmental and epileptic encephalopathy 114</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1860189</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.">C5935598</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Developmental and epileptic encephalopathy-114 (DEE114) is characterized by moderately to severely impaired intellectual development, onset of epilepsy within the first 18 months of life, and a choreiform, dystonic, or dyskinetic movement disorder (Platzer et al., 2022).&#13; For general phenotypic information and a discussion of genetic heterogeneity of DEE, see 308350.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1860189">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1855512"><div><strong>Autoinflammation with arthritis and vasculitis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1855512</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.">C5935634</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autoinflammation with arthritis and vasculitis (AIARV) is an autosomal recessive complex immunologic disorder with onset of symptoms in infancy or early childhood. Affected individuals have recurrent fever, erythematous skin rashes, vasculitis, oral aphthous lesions, and polyarthritis. Laboratory studies are consistent with an inflammatory state. Although patients may have recurrent infections, the infections are not severe. Additional features may include poor overall growth, microcytic anemia, mildly impaired intellectual development, seizures, and variable brain imaging abnormalities. Treatment with TNF (191160) inhibitors may result in clinical improvement (Taft et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1855512">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1052640"><div><strong>Neurodevelopmental disorder with motor abnormalities, seizures, and facial dysmorphism</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1052640</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier assigned by MedGen (starting with CN) for terms&#10;that cannot be identified in NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">CN376901</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neurodevelopmental disorder with motor abnormalities, seizures, and facial dysmorphism (NEDMSF) is characterized by global developmental delay, poor overall growth, early-onset seizures (in most patients), severely impaired motor development with hypotonia and/or ataxia, and dysmorphic facial features. Affected individuals have impaired intellectual development, which can be severe. Brain imaging may show thin corpus callosum, enlarged ventricles, or cerebellar atrophy (Gennarino et al., 2018; Voet et al., 2020).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1052640">Condition Record</a></div></div>
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<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_436917" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934652" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 47</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934604" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 48</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_904125" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 50</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1621755" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 56</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1646861" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 58</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1633501" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 64</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648486" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 66</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648479" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 68</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648381" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 69</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684724" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 78</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684738" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 79</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338393" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Developmental and epileptic encephalopathy, 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862676" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Diffuse cerebral and cerebellar atrophy - intractable seizures - progressive microcephaly syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_482290" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Encephalopathy, lethal, due to defective mitochondrial peroxisomal fission 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1682670" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Encephalopathy, progressive, early-onset, with episodic rhabdomyolysis</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1714171" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Episodic ataxia, type 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816650" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Familial temporal lobe epilepsy 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1658844" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ferro-cerebro-cutaneous syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_87458" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Fumarase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_350479" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Gaucher disease due to saposin C deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648478" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Glycosylphosphatidylinositol biosynthesis defect 18</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_323005" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">GM3 synthase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462587" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hirschsprung disease, cardiac defects, and autonomic dysfunction</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1675904" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypomagnesemia, seizures, and intellectual disability 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1798903" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Hypotonia, infantile, with psychomotor retardation and characteristic facies 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_863632" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Immunodeficiency 37</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_338613" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Infantile onset spinocerebellar ataxia</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684812" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual developmental disorder with short stature and behavioral abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934741" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 42</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462761" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability, autosomal dominant 6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934650" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Intellectual disability-epilepsy-extrapyramidal syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1854360" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Jeffries-Lakhani neurodevelopmental syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1781649" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Kohlschutter-Tonz syndrome-like</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684847" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Liang-Wang syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841264" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Megalencephalic leukoencephalopathy with subcortical cysts 4, remitting</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1718781" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly, developmental delay, and brittle hair syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1676229" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Microcephaly, growth deficiency, seizures, and brain malformations</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1648420" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex 1 deficiency, nuclear type 33</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1783339" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex 1 deficiency, nuclear type 37</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1745691" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex 4 deficiency, nuclear type 12</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1764816" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex 4 deficiency, nuclear type 3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_862845" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial complex III deficiency nuclear type 7</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684823" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial DNA depletion syndrome 17</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_412815" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mitochondrial DNA depletion syndrome 8a</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_477139" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Multiple congenital anomalies-hypotonia-seizures syndrome 2</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_342587" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Myoclonic epilepsy, juvenile, susceptibility to, 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1801540" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodegeneration, childhood-onset, with progressive microcephaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684871" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with ataxia, hypotonia, and microcephaly</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1824058" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with hypotonia, dysmorphic facies, and skin abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1841001" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with language delay and behavioral abnormalities, with or without seizures</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1615361" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with microcephaly, seizures, and cortical atrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1052640" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with motor abnormalities, seizures, and facial dysmorphism</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1645968" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with or without seizures and gait abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1708579" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neurodevelopmental disorder with seizures, hypotonia, and brain imaging abnormalities</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_350481" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronal ceroid lipofuscinosis 10</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_347149" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Osteodysplastic primordial dwarfism, type 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337956" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">PEHO-like syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1684708" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pontocerebellar hypoplasia, type 13</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_901242" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Progressive myoclonic epilepsy type 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_60012" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Progressive sclerosing poliodystrophy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_120645" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Proline dehydrogenase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816615" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Proximal myopathy with extrapyramidal signs</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340341" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Pyridoxine-dependent epilepsy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1798947" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Recurrent metabolic encephalomyopathic crises-rhabdomyolysis-cardiac arrhythmia-intellectual disability syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419284" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Ring chromosome 14</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_148243" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Severe myoclonic epilepsy in infancy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_124340" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Succinate-semialdehyde dehydrogenase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_337496" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Syndromic X-linked intellectual disability Lubs type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_816595" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Warburg micro syndrome 4</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_813060" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked intellectual disability, Cantagrel type</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1794276" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Yoon-Bellen neurodevelopmental syndrome</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_934663" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">ZTTK syndrome</a></div></span></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/37921621">ACVIM Consensus Statement on the management of status epilepticus and cluster seizures in dogs and cats.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Charalambous M,
Muñana K,
Patterson EE,
Platt SR,
Volk HA</span><br />
<span class="medgenPMjournal">J Vet Intern Med</span>
2024 Jan-Feb;38(1):19-40.
Epub 2023 Nov 3
doi: 10.1111/jvim.16928.
<span class="bold">PMID: </span><a href="/pubmed/37921621" target="_blank">37921621</a><a href="/pmc/articles/PMC10800221" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35393970">Management of Status Epilepticus, Refractory Status Epilepticus, and Super-refractory Status Epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Trinka E,
Leitinger M</span><br />
<span class="medgenPMjournal">Continuum (Minneap Minn)</span>
2022 Apr 1;28(2):559-602.
doi: 10.1212/CON.0000000000001103.
<span class="bold">PMID: </span><a href="/pubmed/35393970" target="_blank">35393970</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22528274">Guidelines for the evaluation and management of status epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Brophy GM,
Bell R,
Claassen J,
Alldredge B,
Bleck TP,
Glauser T,
Laroche SM,
Riviello JJ Jr,
Shutter L,
Sperling MR,
Treiman DM,
Vespa PM;
Neurocritical Care Society Status Epilepticus Guideline Writing Committee</span><br />
<span class="medgenPMjournal">Neurocrit Care</span>
2012 Aug;17(1):3-23.
doi: 10.1007/s12028-012-9695-z.
<span class="bold">PMID: </span><a href="/pubmed/22528274" target="_blank">22528274</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22status%20epilepticus%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 (921)</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/33176371">Status Epilepticus: Definition, Classification, Pathophysiology, and Epidemiology.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Johnson EL,
Kaplan PW</span><br />
<span class="medgenPMjournal">Semin Neurol</span>
2020 Dec;40(6):647-651.
Epub 2020 Nov 11
doi: 10.1055/s-0040-1718722.
<span class="bold">PMID: </span><a href="/pubmed/33176371" target="_blank">33176371</a></div>
<div class="nl"><a target="_blank" href="/pubmed/32198865">Refractory and Super-refractory Status Epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Samanta D,
Garrity L,
Arya R</span><br />
<span class="medgenPMjournal">Indian Pediatr</span>
2020 Mar 15;57(3):239-253.
doi: 10.1007/s13312-020-1759-0.
<span class="bold">PMID: </span><a href="/pubmed/32198865" target="_blank">32198865</a><a href="/pmc/articles/PMC7224023" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29922905">Treatment of Refractory and Super-refractory Status Epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rai S,
Drislane FW</span><br />
<span class="medgenPMjournal">Neurotherapeutics</span>
2018 Jul;15(3):697-712.
doi: 10.1007/s13311-018-0640-5.
<span class="bold">PMID: </span><a href="/pubmed/29922905" target="_blank">29922905</a><a href="/pmc/articles/PMC6095773" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26336950">A definition and classification of status epilepticus--Report of the ILAE Task Force on Classification of Status Epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Trinka E,
Cock H,
Hesdorffer D,
Rossetti AO,
Scheffer IE,
Shinnar S,
Shorvon S,
Lowenstein DH</span><br />
<span class="medgenPMjournal">Epilepsia</span>
2015 Oct;56(10):1515-23.
Epub 2015 Sep 4
doi: 10.1111/epi.13121.
<span class="bold">PMID: </span><a href="/pubmed/26336950" target="_blank">26336950</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26092326">Salzburg Consensus Criteria for Non-Convulsive Status Epilepticus--approach to clinical application.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Leitinger M,
Beniczky S,
Rohracher A,
Gardella E,
Kalss G,
Qerama E,
Höfler J,
Hess Lindberg-Larsen A,
Kuchukhidze G,
Dobesberger J,
Langthaler PB,
Trinka E</span><br />
<span class="medgenPMjournal">Epilepsy Behav</span>
2015 Aug;49:158-63.
Epub 2015 Jun 17
doi: 10.1016/j.yebeh.2015.05.007.
<span class="bold">PMID: </span><a href="/pubmed/26092326" target="_blank">26092326</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Status%20epilepticus%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 (3815)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/36333039">Status Epilepticus: A Neurologic Emergency.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Coppler PJ,
Elmer J</span><br />
<span class="medgenPMjournal">Crit Care Clin</span>
2023 Jan;39(1):87-102.
Epub 2022 Oct 7
doi: 10.1016/j.ccc.2022.07.006.
<span class="bold">PMID: </span><a href="/pubmed/36333039" target="_blank">36333039</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35393970">Management of Status Epilepticus, Refractory Status Epilepticus, and Super-refractory Status Epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Trinka E,
Leitinger M</span><br />
<span class="medgenPMjournal">Continuum (Minneap Minn)</span>
2022 Apr 1;28(2):559-602.
doi: 10.1212/CON.0000000000001103.
<span class="bold">PMID: </span><a href="/pubmed/35393970" target="_blank">35393970</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33176371">Status Epilepticus: Definition, Classification, Pathophysiology, and Epidemiology.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Johnson EL,
Kaplan PW</span><br />
<span class="medgenPMjournal">Semin Neurol</span>
2020 Dec;40(6):647-651.
Epub 2020 Nov 11
doi: 10.1055/s-0040-1718722.
<span class="bold">PMID: </span><a href="/pubmed/33176371" target="_blank">33176371</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25908090">Status epilepticus in adults.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Betjemann JP,
Lowenstein DH</span><br />
<span class="medgenPMjournal">Lancet Neurol</span>
2015 Jun;14(6):615-24.
Epub 2015 Apr 20
doi: 10.1016/S1474-4422(15)00042-3.
<span class="bold">PMID: </span><a href="/pubmed/25908090" target="_blank">25908090</a></div>
<div class="nl"><a target="_blank" href="/pubmed/22528274">Guidelines for the evaluation and management of status epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Brophy GM,
Bell R,
Claassen J,
Alldredge B,
Bleck TP,
Glauser T,
Laroche SM,
Riviello JJ Jr,
Shutter L,
Sperling MR,
Treiman DM,
Vespa PM;
Neurocritical Care Society Status Epilepticus Guideline Writing Committee</span><br />
<span class="medgenPMjournal">Neurocrit Care</span>
2012 Aug;17(1):3-23.
doi: 10.1007/s12028-012-9695-z.
<span class="bold">PMID: </span><a href="/pubmed/22528274" target="_blank">22528274</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Status%20epilepticus%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 (4379)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/36333039">Status Epilepticus: A Neurologic Emergency.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Coppler PJ,
Elmer J</span><br />
<span class="medgenPMjournal">Crit Care Clin</span>
2023 Jan;39(1):87-102.
Epub 2022 Oct 7
doi: 10.1016/j.ccc.2022.07.006.
<span class="bold">PMID: </span><a href="/pubmed/36333039" target="_blank">36333039</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35596878">Ganaxolone: First Approval.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Lamb YN</span><br />
<span class="medgenPMjournal">Drugs</span>
2022 Jun;82(8):933-940.
doi: 10.1007/s40265-022-01724-0.
<span class="bold">PMID: </span><a href="/pubmed/35596878" target="_blank">35596878</a></div>
<div class="nl"><a target="_blank" href="/pubmed/32113502">Epilepsy in older people.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Sen A,
Jette N,
Husain M,
Sander JW</span><br />
<span class="medgenPMjournal">Lancet</span>
2020 Feb 29;395(10225):735-748.
doi: 10.1016/S0140-6736(19)33064-8.
<span class="bold">PMID: </span><a href="/pubmed/32113502" target="_blank">32113502</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31774955">Randomized Trial of Three Anticonvulsant Medications for Status Epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kapur J,
Elm J,
Chamberlain JM,
Barsan W,
Cloyd J,
Lowenstein D,
Shinnar S,
Conwit R,
Meinzer C,
Cock H,
Fountain N,
Connor JT,
Silbergleit R;
NETT and PECARN Investigators</span><br />
<span class="medgenPMjournal">N Engl J Med</span>
2019 Nov 28;381(22):2103-2113.
doi: 10.1056/NEJMoa1905795.
<span class="bold">PMID: </span><a href="/pubmed/31774955" target="_blank">31774955</a><a href="/pmc/articles/PMC7098487" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29941225">Pediatric refractory and super-refractory status epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Vasquez A,
Farias-Moeller R,
Tatum W</span><br />
<span class="medgenPMjournal">Seizure</span>
2019 May;68:62-71.
Epub 2018 May 19
doi: 10.1016/j.seizure.2018.05.012.
<span class="bold">PMID: </span><a href="/pubmed/29941225" target="_blank">29941225</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Status%20epilepticus%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 (4213)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/30426482">The epidemiology of drug-resistant epilepsy: A systematic review and meta-analysis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kalilani L,
Sun X,
Pelgrims B,
Noack-Rink M,
Villanueva V</span><br />
<span class="medgenPMjournal">Epilepsia</span>
2018 Dec;59(12):2179-2193.
Epub 2018 Nov 13
doi: 10.1111/epi.14596.
<span class="bold">PMID: </span><a href="/pubmed/30426482" target="_blank">30426482</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24295158">Febrile seizures.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Patterson JL,
Carapetian SA,
Hageman JR,
Kelley KR</span><br />
<span class="medgenPMjournal">Pediatr Ann</span>
2013 Dec;42(12):249-54.
doi: 10.3928/00904481-20131122-09.
<span class="bold">PMID: </span><a href="/pubmed/24295158" target="_blank">24295158</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23739110">Status epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hirsch LJ,
Gaspard N</span><br />
<span class="medgenPMjournal">Continuum (Minneap Minn)</span>
2013 Jun;19(3 Epilepsy):767-94.
doi: 10.1212/01.CON.0000431395.16229.5a.
<span class="bold">PMID: </span><a href="/pubmed/23739110" target="_blank">23739110</a><a href="/pmc/articles/PMC10564021" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/21109099">Emergency department seizure epidemiology.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Martindale JL,
Goldstein JN,
Pallin DJ</span><br />
<span class="medgenPMjournal">Emerg Med Clin North Am</span>
2011 Feb;29(1):15-27.
doi: 10.1016/j.emc.2010.08.002.
<span class="bold">PMID: </span><a href="/pubmed/21109099" target="_blank">21109099</a></div>
<div class="nl"><a target="_blank" href="/pubmed/18360338">Status epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Feen ES,
Bershad EM,
Suarez JI</span><br />
<span class="medgenPMjournal">South Med J</span>
2008 Apr;101(4):400-6.
doi: 10.1097/SMJ.0b013e31816852b0.
<span class="bold">PMID: </span><a href="/pubmed/18360338" target="_blank">18360338</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Status%20epilepticus%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 (2783)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/38441162">Status epilepticus: what's new for the intensivist.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Benghanem S,
Pruvost-Robieux E,
Neligan A,
Walker MC</span><br />
<span class="medgenPMjournal">Curr Opin Crit Care</span>
2024 Apr 1;30(2):131-141.
Epub 2024 Feb 13
doi: 10.1097/MCC.0000000000001137.
<span class="bold">PMID: </span><a href="/pubmed/38441162" target="_blank">38441162</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35393970">Management of Status Epilepticus, Refractory Status Epilepticus, and Super-refractory Status Epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Trinka E,
Leitinger M</span><br />
<span class="medgenPMjournal">Continuum (Minneap Minn)</span>
2022 Apr 1;28(2):559-602.
doi: 10.1212/CON.0000000000001103.
<span class="bold">PMID: </span><a href="/pubmed/35393970" target="_blank">35393970</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34618762">Seizures, Status Epilepticus, and Continuous EEG in the Intensive Care Unit.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rosenthal ES</span><br />
<span class="medgenPMjournal">Continuum (Minneap Minn)</span>
2021 Oct 1;27(5):1321-1343.
doi: 10.1212/CON.0000000000001012.
<span class="bold">PMID: </span><a href="/pubmed/34618762" target="_blank">34618762</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30516601">Status Epilepticus, Refractory Status Epilepticus, and Super-refractory Status Epilepticus.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nelson SE,
Varelas PN</span><br />
<span class="medgenPMjournal">Continuum (Minneap Minn)</span>
2018 Dec;24(6):1683-1707.
doi: 10.1212/CON.0000000000000668.
<span class="bold">PMID: </span><a href="/pubmed/30516601" target="_blank">30516601</a></div>
<div class="nl"><a target="_blank" href="/pubmed/26092326">Salzburg Consensus Criteria for Non-Convulsive Status Epilepticus--approach to clinical application.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Leitinger M,
Beniczky S,
Rohracher A,
Gardella E,
Kalss G,
Qerama E,
Höfler J,
Hess Lindberg-Larsen A,
Kuchukhidze G,
Dobesberger J,
Langthaler PB,
Trinka E</span><br />
<span class="medgenPMjournal">Epilepsy Behav</span>
2015 Aug;49:158-63.
Epub 2015 Jun 17
doi: 10.1016/j.yebeh.2015.05.007.
<span class="bold">PMID: </span><a href="/pubmed/26092326" target="_blank">26092326</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Status%20epilepticus%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 (2326)</a></div></div>
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<div class="nl"><a target="_blank" href="/pubmed/36209676">Treatment of benzodiazepine-resistant status epilepticus: Systematic review and network meta-analyses.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Jain P,
Aneja S,
Cunningham J,
Arya R,
Sharma S</span><br />
<span class="medgenPMjournal">Seizure</span>
2022 Nov;102:74-82.
Epub 2022 Sep 26
doi: 10.1016/j.seizure.2022.09.017.
<span class="bold">PMID: </span><a href="/pubmed/36209676" target="_blank">36209676</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29871784">Seizure cluster: Definition, prevalence, consequences, and management.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Jafarpour S,
Hirsch LJ,
Gaínza-Lein M,
Kellinghaus C,
Detyniecki K</span><br />
<span class="medgenPMjournal">Seizure</span>
2019 May;68:9-15.
Epub 2018 May 21
doi: 10.1016/j.seizure.2018.05.013.
<span class="bold">PMID: </span><a href="/pubmed/29871784" target="_blank">29871784</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30426482">The epidemiology of drug-resistant epilepsy: A systematic review and meta-analysis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Kalilani L,
Sun X,
Pelgrims B,
Noack-Rink M,
Villanueva V</span><br />
<span class="medgenPMjournal">Epilepsia</span>
2018 Dec;59(12):2179-2193.
Epub 2018 Nov 13
doi: 10.1111/epi.14596.
<span class="bold">PMID: </span><a href="/pubmed/30426482" target="_blank">30426482</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29137682">Cefepime-induced neurotoxicity: a systematic review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Payne LE,
Gagnon DJ,
Riker RR,
Seder DB,
Glisic EK,
Morris JG,
Fraser GL</span><br />
<span class="medgenPMjournal">Crit Care</span>
2017 Nov 14;21(1):276.
doi: 10.1186/s13054-017-1856-1.
<span class="bold">PMID: </span><a href="/pubmed/29137682" target="_blank">29137682</a><a href="/pmc/articles/PMC5686900" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/28295226">Lacosamide in status epilepticus: Systematic review of current evidence.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Strzelczyk A,
Zöllner JP,
Willems LM,
Jost J,
Paule E,
Schubert-Bast S,
Rosenow F,
Bauer S</span><br />
<span class="medgenPMjournal">Epilepsia</span>
2017 Jun;58(6):933-950.
Epub 2017 Mar 11
doi: 10.1111/epi.13716.
<span class="bold">PMID: </span><a href="/pubmed/28295226" target="_blank">28295226</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Status%20epilepticus%22%20AND%20systematic%5Bsb%5D%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (209)</a></div></div>
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<li><a href="/gtr/tests?term=C0038220%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (15)</a></li>
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