nih-gov/www.ncbi.nlm.nih.gov/omim/616172

3054 lines
177 KiB
Text

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-us" xml:lang="en-us" >
<head>
<!--
################################# CRAWLER WARNING #################################
- The terms of service and the robots.txt file disallows crawling of this site,
please see https://omim.org/help/agreement for more information.
- A number of data files are available for download at https://omim.org/downloads.
- We have an API which you can learn about at https://omim.org/help/api and register
for at https://omim.org/api, this provides access to the data in JSON & XML formats.
- You should feel free to contact us at https://omim.org/contact to figure out the best
approach to getting the data you need for your work.
- WE WILL AUTOMATICALLY BLOCK YOUR IP ADDRESS IF YOU CRAWL THIS SITE.
- WE WILL ALSO AUTOMATICALLY BLOCK SUB-DOMAINS AND ADDRESS RANGES IMPLICATED IN
DISTRIBUTED CRAWLS OF THIS SITE.
################################# CRAWLER WARNING #################################
-->
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta http-equiv="cache-control" content="no-cache" />
<meta http-equiv="pragma" content="no-cache" />
<meta name="robots" content="index, follow" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="title" content="Online Mendelian Inheritance in Man (OMIM)" />
<meta name="description" content="Online Mendelian Inheritance in Man (OMIM) is a comprehensive, authoritative
compendium of human genes and genetic phenotypes that is freely available and updated daily. The full-text,
referenced overviews in OMIM contain information on all known mendelian disorders and over 15,000 genes.
OMIM focuses on the relationship between phenotype and genotype. It is updated daily, and the entries
contain copious links to other genetics resources." />
<meta name="keywords" content="Mendelian Inheritance in Man, OMIM, Mendelian diseases, Mendelian disorders, genetic diseases,
genetic disorders, genetic disorders in humans, genetic phenotypes, phenotype and genotype, disease models, alleles,
genes, dna, genetics, dna testing, gene testing, clinical synopsis, medical genetics" />
<meta name="theme-color" content="#333333" />
<link rel="icon" href="/static/omim/favicon.png" />
<link rel="apple-touch-icon" href="/static/omim/favicon.png" />
<link rel="manifest" href="/static/omim/manifest.json" />
<script id='mimBrowserCapability'>
function _0x5069(){const _0x4b1387=['91sZIeLc','mimBrowserCapability','15627zshTnf','710004yxXedd','34LxqNYj','match','disconnect','1755955rnzTod','observe','1206216ZRfBWB','575728fqgsYy','webdriver','documentElement','close','open','3086704utbakv','7984143PpiTpt'];_0x5069=function(){return _0x4b1387;};return _0x5069();}function _0xe429(_0x472ead,_0x43eb70){const _0x506916=_0x5069();return _0xe429=function(_0xe42949,_0x1aaefc){_0xe42949=_0xe42949-0x1a9;let _0xe6add8=_0x506916[_0xe42949];return _0xe6add8;},_0xe429(_0x472ead,_0x43eb70);}(function(_0x337daa,_0x401915){const _0x293f03=_0xe429,_0x5811dd=_0x337daa();while(!![]){try{const _0x3dc3a3=parseInt(_0x293f03(0x1b4))/0x1*(-parseInt(_0x293f03(0x1b6))/0x2)+parseInt(_0x293f03(0x1b5))/0x3+parseInt(_0x293f03(0x1b0))/0x4+-parseInt(_0x293f03(0x1b9))/0x5+parseInt(_0x293f03(0x1aa))/0x6+-parseInt(_0x293f03(0x1b2))/0x7*(parseInt(_0x293f03(0x1ab))/0x8)+parseInt(_0x293f03(0x1b1))/0x9;if(_0x3dc3a3===_0x401915)break;else _0x5811dd['push'](_0x5811dd['shift']());}catch(_0x4dd27b){_0x5811dd['push'](_0x5811dd['shift']());}}}(_0x5069,0x84d63),(function(){const _0x9e4c5f=_0xe429,_0x363a26=new MutationObserver(function(){const _0x458b09=_0xe429;if(document!==null){let _0x2f0621=![];navigator[_0x458b09(0x1ac)]!==![]&&(_0x2f0621=!![]);for(const _0x427dda in window){_0x427dda[_0x458b09(0x1b7)](/cdc_[a-z0-9]/ig)&&(_0x2f0621=!![]);}_0x2f0621===!![]?document[_0x458b09(0x1af)]()[_0x458b09(0x1ae)]():(_0x363a26[_0x458b09(0x1b8)](),document['getElementById'](_0x458b09(0x1b3))['remove']());}});_0x363a26[_0x9e4c5f(0x1a9)](document[_0x9e4c5f(0x1ad)],{'childList':!![]});}()));
</script>
<link rel='preconnect' href='https://cdn.jsdelivr.net' />
<link rel='preconnect' href='https://cdnjs.cloudflare.com' />
<link rel="preconnect" href="https://www.googletagmanager.com" />
<script src="https://cdn.jsdelivr.net/npm/jquery@3.7.1/dist/jquery.min.js" integrity="sha256-/JqT3SQfawRcv/BIHPThkBvs0OEvtFFmqPF/lYI/Cxo=" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/jquery-migrate@3.5.2/dist/jquery-migrate.js" integrity="sha256-ThFcNr/v1xKVt5cmolJIauUHvtXFOwwqiTP7IbgP8EU=" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@3.4.1/dist/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.4.1/dist/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.4.1/dist/css/bootstrap-theme.min.css" integrity="sha256-8uHMIn1ru0GS5KO+zf7Zccf8Uw12IA5DrdEcmMuWLFM=" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/moment@2.29.4/min/moment.min.js" integrity="sha256-80OqMZoXo/w3LuatWvSCub9qKYyyJlK0qnUCYEghBx8=" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/eonasdan-bootstrap-datetimepicker@4.17.49/build/js/bootstrap-datetimepicker.min.js" integrity="sha256-dYxUtecag9x4IaB2vUNM34sEso6rWTgEche5J6ahwEQ=" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/eonasdan-bootstrap-datetimepicker@4.17.49/build/css/bootstrap-datetimepicker.min.css" integrity="sha256-9FNpuXEYWYfrusiXLO73oIURKAOVzqzkn69cVqgKMRY=" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/qtip2@3.0.3/dist/jquery.qtip.min.js" integrity="sha256-a+PRq3NbyK3G08Boio9X6+yFiHpTSIrbE7uzZvqmDac=" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/qtip2@3.0.3/dist/jquery.qtip.min.css" integrity="sha256-JvdVmxv7Q0LsN1EJo2zc1rACwzatOzkyx11YI4aP9PY=" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/devbridge-autocomplete@1.4.11/dist/jquery.autocomplete.min.js" integrity="sha256-BNpu3uLkB3SwY3a2H3Ue7WU69QFdSRlJVBrDTnVKjiA=" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/jquery-validation@1.21.0/dist/jquery.validate.min.js" integrity="sha256-umbTaFxP31Fv6O1itpLS/3+v5fOAWDLOUzlmvOGaKV4=" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/js-cookie@3.0.5/dist/js.cookie.min.js" integrity="sha256-WCzAhd2P6gRJF9Hv3oOOd+hFJi/QJbv+Azn4CGB8gfY=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ScrollToFixed/1.0.8/jquery-scrolltofixed-min.js" integrity="sha512-ohXbv1eFvjIHMXG/jY057oHdBZ/jhthP1U3jES/nYyFdc9g6xBpjDjKIacGoPG6hY//xVQeqpWx8tNjexXWdqA==" crossorigin="anonymous"></script>
<script async src="https://www.googletagmanager.com/gtag/js?id=G-HMPSQC23JJ"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){window.dataLayer.push(arguments);}
gtag("js", new Date());
gtag("config", "G-HMPSQC23JJ");
</script>
<script src="/static/omim/js/site.js?version=Zmk5Y1" integrity="sha256-fi9cXywxCO5p0mU1OSWcMp0DTQB4s8ncFR8j+IO840s="></script>
<link rel="stylesheet" href="/static/omim/css/site.css?version=VGE4MF" integrity="sha256-Ta80Qpm3w1S8kmnN0ornbsZxdfA32R42R4ncsbos0YU=" />
<script src="/static/omim/js/entry/entry.js?version=anMvRU" integrity="sha256-js/EBOBZzGDctUqr1VhnNPzEiA7w3HM5JbFmOj2CW84="></script>
<div id="mimBootstrapDeviceSize">
<div class="visible-xs" data-mim-bootstrap-device-size="xs"></div>
<div class="visible-sm" data-mim-bootstrap-device-size="sm"></div>
<div class="visible-md" data-mim-bootstrap-device-size="md"></div>
<div class="visible-lg" data-mim-bootstrap-device-size="lg"></div>
</div>
<title>
Entry
- #616172 - GENERALIZED EPILEPSY WITH FEBRILE SEIZURES PLUS, TYPE 9; GEFSP9
- OMIM
</title>
</head>
<body>
<div id="mimBody">
<div id="mimHeader" class="hidden-print">
<nav class="navbar navbar-inverse navbar-fixed-top mim-navbar-background">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#mimNavbarCollapse" aria-expanded="false">
<span class="sr-only"> Toggle navigation </span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="/"><img alt="OMIM" src="/static/omim/icons/OMIM_davinciman.001.png" height="30" width="30"></a>
</div>
<div id="mimNavbarCollapse" class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li>
<a href="/help/about"><span class="mim-navbar-menu-font"> About </span></a>
</li>
<li class="dropdown">
<a href="#" id="mimStatisticsDropdown" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false"><span class="mim-navbar-menu-font"> Statistics <span class="caret"></span></span></a>
<ul class="dropdown-menu" role="menu" aria-labelledby="statisticsDropdown">
<li>
<a href="/statistics/update"> Update List </a>
</li>
<li>
<a href="/statistics/entry"> Entry Statistics </a>
</li>
<li>
<a href="/statistics/geneMap"> Phenotype-Gene Statistics </a>
</li>
<li>
<a href="/statistics/paceGraph"> Pace of Gene Discovery Graph </a>
</li>
</ul>
</li>
<li class="dropdown">
<a href="#" id="mimDownloadsDropdown" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false"><span class="mim-navbar-menu-font"> Downloads <span class="caret"></span></span></a>
<ul class="dropdown-menu" role="menu" aria-labelledby="downloadsDropdown">
<li>
<a href="/downloads/"> Register for Downloads </a>
</li>
<li>
<a href="/api"> Register for API Access </a>
</li>
</ul>
</li>
<li>
<a href="/contact?mimNumber=616172"><span class="mim-navbar-menu-font"> Contact Us </span></a>
</li>
<li>
<a href="/mimmatch/">
<span class="mim-navbar-menu-font">
<span class="mim-tip-bottom" qtip_title="<strong>MIMmatch</strong>" qtip_text="MIMmatch is a way to follow OMIM entries that interest you and to find other researchers who may share interest in the same entries. <br /><br />A bonus to all MIMmatch users is the option to sign up for updates on new gene-phenotype relationships.">
MIMmatch
</span>
</span>
</a>
</li>
<li class="dropdown">
<a href="#" id="mimDonateDropdown" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false"><span class="mim-navbar-menu-font"> Donate <span class="caret"></span></span></a>
<ul class="dropdown-menu" role="menu" aria-labelledby="donateDropdown">
<li>
<a href="https://secure.jhu.edu/form/OMIM" target="_blank" onclick="gtag('event', 'mim_donation', {'destination': 'secure.jhu.edu'})"> Donate! </a>
</li>
<li>
<a href="/donors"> Donors </a>
</li>
</ul>
</li>
<li class="dropdown">
<a href="#" id="mimHelpDropdown" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false"><span class="mim-navbar-menu-font"> Help <span class="caret"></span></span></a>
<ul class="dropdown-menu" role="menu" aria-labelledby="helpDropdown">
<li>
<a href="/help/faq"> Frequently Asked Questions (FAQs) </a>
</li>
<li role="separator" class="divider"></li>
<li>
<a href="/help/search"> Search Help </a>
</li>
<li>
<a href="/help/linking"> Linking Help </a>
</li>
<li>
<a href="/help/api"> API Help </a>
</li>
<li role="separator" class="divider"></li>
<li>
<a href="/help/external"> External Links </a>
</li>
<li role="separator" class="divider"></li>
<li>
<a href="/help/agreement"> Use Agreement </a>
</li>
<li>
<a href="/help/copyright"> Copyright </a>
</li>
</ul>
</li>
<li>
<a href="#" id="mimShowTips" class="mim-tip-hint" title="Click to reveal all tips on the page. You can also hover over individual elements to reveal the tip."><span class="mim-navbar-menu-font"><span class="glyphicon glyphicon-question-sign" aria-hidden="true"></span></span></a>
</li>
</ul>
</div>
</div>
</nav>
</div>
<div id="mimSearch" class="hidden-print">
<div class="container">
<form method="get" action="/search" id="mimEntrySearchForm" name="entrySearchForm" class="form-horizontal">
<input type="hidden" id="mimSearchIndex" name="index" value="entry" />
<input type="hidden" id="mimSearchStart" name="start" value="1" />
<input type="hidden" id="mimSearchLimit" name="limit" value="10" />
<input type="hidden" id="mimSearchSort" name="sort" value="score desc, prefix_sort desc" />
<div class="row">
<div class="col-lg-8 col-md-8 col-sm-8 col-xs-8">
<div class="form-group">
<div class="input-group">
<input type="search" id="mimEntrySearch" name="search" class="form-control" value="" placeholder="Search OMIM..." maxlength="5000" autocomplete="off" autocorrect="off" autocapitalize="none" spellcheck="false" autofocus />
<div class="input-group-btn">
<button type="submit" id="mimEntrySearchSubmit" class="btn btn-default" style="width: 5em;"><span class="glyphicon glyphicon-search"></span></button>
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown"> Options <span class="caret"></span></button>
<ul class="dropdown-menu dropdown-menu-right">
<li class="dropdown-header">
Advanced Search
</li>
<li style="margin-left: 0.5em;">
<a href="/search/advanced/entry"> OMIM </a>
</li>
<li style="margin-left: 0.5em;">
<a href="/search/advanced/clinicalSynopsis"> Clinical Synopses </a>
</li>
<li style="margin-left: 0.5em;">
<a href="/search/advanced/geneMap"> Gene Map </a>
</li>
<li role="separator" class="divider"></li>
<li>
<a href="/history"> Search History </a>
</li>
</ul>
</div>
</div>
<div class="autocomplete" id="mimEntrySearchAutocomplete"></div>
</div>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<span class="small">
</span>
</div>
</div>
</form>
<div class="row">
<p />
</div>
</div>
</div>
<!-- <div id="mimSearch"> -->
<div id="mimContent">
<div class="container hidden-print">
<div class="row">
<div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
<div id="mimAlertBanner">
</div>
</div>
</div>
<div class="row">
<div class="col-lg-2 col-md-2 col-sm-2 hidden-sm hidden-xs">
<div id="mimFloatingTocMenu" class="small" role="navigation">
<p>
<span class="h4">#616172</span>
<br />
<strong>Table of Contents</strong>
</p>
<nav>
<ul id="mimFloatingTocMenuItems" class="nav nav-pills nav-stacked mim-floating-toc-padding">
<li role="presentation">
<a href="#title"><strong>Title</strong></a>
</li>
<li role="presentation">
<a href="#phenotypeMap"><strong>Phenotype-Gene Relationships</strong></a>
</li>
<li role="presentation">
<a href="/clinicalSynopsis/616172"><strong>Clinical Synopsis</strong></a>
</li>
<li role="presentation">
<a href="/phenotypicSeries/PS604233"> <strong>Phenotypic Series</strong> </a>
</li>
<li role="presentation">
<a href="#text"><strong>Text</strong></a>
</li>
<li role="presentation" style="margin-left: 1em">
<a href="#description">Description</a>
</li>
<li role="presentation" style="margin-left: 1em">
<a href="#clinicalFeatures">Clinical Features</a>
</li>
<li role="presentation" style="margin-left: 1em">
<a href="#inheritance">Inheritance</a>
</li>
<li role="presentation" style="margin-left: 1em">
<a href="#mapping">Mapping</a>
</li>
<li role="presentation" style="margin-left: 1em">
<a href="#molecularGenetics">Molecular Genetics</a>
</li>
<li role="presentation" style="margin-left: 1em">
<a href="#animalModel">Animal Model</a>
</li>
<li role="presentation">
<a href="#references"><strong>References</strong></a>
</li>
<li role="presentation">
<a href="#creationDate"><strong>Creation Date</strong></a>
</li>
<li role="presentation">
<a href="#editHistory"><strong>Edit History</strong></a>
</li>
</ul>
</nav>
</div>
</div>
<div class="col-lg-2 col-lg-push-8 col-md-2 col-md-push-8 col-sm-2 col-sm-push-8 col-xs-12">
<div id="mimFloatingLinksMenu">
<div class="panel panel-primary" style="margin-bottom: 0px; border-radius: 4px 4px 0px 0px">
<div class="panel-heading mim-panel-heading" role="tab" id="mimExternalLinks">
<h4 class="panel-title">
<a href="#mimExternalLinksFold" id="mimExternalLinksToggle" class="mimTriangleToggle" role="button" data-toggle="collapse">
<div style="display: table-row">
<div id="mimExternalLinksToggleTriangle" class="small" style="color: white; display: table-cell;">&#9660;</div>
&nbsp;
<div style="display: table-cell;">External Links</div>
</div>
</a>
</h4>
</div>
</div>
<div id="mimExternalLinksFold" class="collapse in">
<div class="panel-group" id="mimExternalLinksAccordion" role="tablist" aria-multiselectable="true">
<div class="panel panel-default" style="margin-top: 0px; border-radius: 0px">
<div class="panel-heading mim-panel-heading" role="tab" id="mimClinicalResources">
<span class="panel-title">
<span class="small">
<a href="#mimClinicalResourcesLinksFold" id="mimClinicalResourcesLinksToggle" class=" mimSingletonTriangleToggle" role="button" data-toggle="collapse" data-parent="#mimExternalLinksAccordion">
<div style="display: table-row">
<div id="mimClinicalResourcesLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5; display: table-cell;">&#9660;</div>
&nbsp;
<div style="display: table-cell;">Clinical Resources</div>
</div>
</a>
</span>
</span>
</div>
<div id="mimClinicalResourcesLinksFold" class="panel-collapse collapse in mimLinksFold" role="tabpanel" aria-labelledby="clinicalResources">
<div class="panel-body small mim-panel-body">
<div><a href="https://clinicaltrials.gov/search?cond=(GENERALIZED EPILEPSY WITH FEBRILE SEIZURES PLUS, TYPE) OR (STX1B)" class="mim-tip-hint" title="Clinical Trials" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Clinical Trials', 'domain': 'clinicaltrials.gov'})">Clinical Trials</a></div>
<div><a href="https://www.orpha.net/consor/cgi-bin/ClinicalLabs_Search_Simple.php?lng=EN&LnkId=10424&Typ=Pat" class="mim-tip-hint" title="A list of European laboratories that offer genetic testing." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'EuroGentest', 'domain': 'orpha.net'})">EuroGentest</a></div>
<div><a href="https://medlineplus.gov/genetics/condition/genetic-epilepsy-with-febrile-seizures-plus" class="mim-tip-hint" title="Consumer-friendly information about the effects of genetic variation on human health." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'MedlinePlus Genetics', 'domain': 'medlineplus.gov'})">MedlinePlus Genetics</a></div>
<div><a href="https://www.ncbi.nlm.nih.gov/gtr/all/tests/?term=616172[mim]" class="mim-tip-hint" title="Genetic Testing Registry." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'GTR', 'domain': 'ncbi.nlm.nih.gov'})">GTR</a></div>
<div><a href="https://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&Expert=36387" class="mim-tip-hint" title="European reference portal for information on rare diseases and orphan drugs." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'OrphaNet', 'domain': 'orpha.net'})">OrphaNet</a></div>
</div>
</div>
</div>
<div class="panel panel-default" style="margin-top: 0px; border-radius: 0px">
<div class="panel-heading mim-panel-heading" role="tab" id="mimAnimalModels">
<span class="panel-title">
<span class="small">
<a href="#mimAnimalModelsLinksFold" id="mimAnimalModelsLinksToggle" class="collapsed mimSingletonTriangleToggle" role="button" data-toggle="collapse" data-parent="#mimExternalLinksAccordion">
<div style="display: table-row">
<div id="mimAnimalModelsLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5; display: table-cell;">&#9658;</div>
&nbsp;
<div style="display: table-cell;">Animal Models</div>
</div>
</a>
</span>
</span>
</div>
<div id="mimAnimalModelsLinksFold" class="panel-collapse collapse mimLinksFold" role="tabpanel">
<div class="panel-body small mim-panel-body">
<div><a href="https://www.alliancegenome.org/disease/DOID:0111301" class="mim-tip-hint" title="Search Across Species; explore model organism and human comparative genomics." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Alliance Genome', 'domain': 'alliancegenome.org'})">Alliance Genome</a></div>
<div><a href="http://www.informatics.jax.org/disease/616172" class="mim-tip-hint" title="Phenotypes, alleles, and disease models from Mouse Genome Informatics." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'MGI Mouse Phenotype', 'domain': 'informatics.jax.org'})">MGI Mouse Phenotype</a></div>
<div><a href="https://wormbase.org/resources/disease/DOID:0111301" class="mim-tip-hint" title="Database of the biology and genome of Caenorhabditis elegans and related nematodes." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Wormbase Disease Ontology', 'domain': 'wormbase.org'})">Wormbase Disease Ontology</a></div>
</div>
</div>
</div>
</div>
</div>
</div>
<span>
<span class="mim-tip-bottom" qtip_title="<strong>Looking for this gene or this phenotype in other resources?</strong>" qtip_text="Select a related resource from the dropdown menu and click for a targeted link to information directly relevant.">
&nbsp;
</span>
</span>
</div>
<div class="col-lg-8 col-lg-pull-2 col-md-8 col-md-pull-2 col-sm-8 col-sm-pull-2 col-xs-12">
<div>
<a id="title" class="mim-anchor"></a>
<div>
<a id="number" class="mim-anchor"></a>
<div class="text-right">
<a href="#" class="mim-tip-icd" qtip_title="<strong>ICD+</strong>" qtip_text="
<strong>ORPHA:</strong> 36387<br />
<strong>DO:</strong> 0111301<br />
">ICD+</a>
</div>
<div>
<span class="h3">
<span class="mim-font mim-tip-hint" title="Phenotype description, molecular basis known">
<span class="text-danger"><strong>#</strong></span>
616172
</span>
</span>
</div>
</div>
<div>
<a id="preferredTitle" class="mim-anchor"></a>
<h3>
<span class="mim-font">
GENERALIZED EPILEPSY WITH FEBRILE SEIZURES PLUS, TYPE 9; GEFSP9
</span>
</h3>
</div>
<div>
<br />
</div>
<div>
<a id="alternativeTitles" class="mim-anchor"></a>
<div>
<p>
<span class="mim-font">
<em>Alternative titles; symbols</em>
</span>
</p>
</div>
<div>
<h4>
<span class="mim-font">
GEFS+, TYPE 9; GEFS+9
</span>
</h4>
</div>
</div>
<div>
<br />
</div>
</div>
<div>
<a id="phenotypeMap" class="mim-anchor"></a>
<h4>
<span class="mim-font">
<strong>Phenotype-Gene Relationships</strong>
</span>
</h4>
<div>
<table class="table table-bordered table-condensed table-hover small mim-table-padding">
<thead>
<tr class="active">
<th>
Location
</th>
<th>
Phenotype
</th>
<th>
Phenotype <br /> MIM number
</th>
<th>
Inheritance
</th>
<th>
Phenotype <br /> mapping key
</th>
<th>
Gene/Locus
</th>
<th>
Gene/Locus <br /> MIM number
</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/16/374?start=-3&limit=10&highlight=374">
16p11.2
</a>
</span>
</td>
<td>
<span class="mim-font">
Generalized epilepsy with febrile seizures plus, type 9
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616172"> 616172 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
STX1B
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601485"> 601485 </a>
</span>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div>
<div class="btn-group ">
<a href="/clinicalSynopsis/616172" class="btn btn-warning" role="button"> Clinical Synopsis </a>
<button type="button" id="mimPhenotypicSeriesToggle" class="btn btn-warning dropdown-toggle mimSingletonFoldToggle" data-toggle="collapse" href="#mimClinicalSynopsisFold" onclick="ga('send', 'event', 'Unfurl', 'ClinicalSynopsis', 'omim.org')">
<span class="caret"></span>
<span class="sr-only">Toggle Dropdown</span>
</button>
</div>
&nbsp;
<div class="btn-group">
<a href="/phenotypicSeries/PS604233" class="btn btn-info" role="button"> Phenotypic Series </a>
<button type="button" id="mimPhenotypicSeriesToggle" class="btn btn-info dropdown-toggle mimSingletonFoldToggle" data-toggle="collapse" href="#mimPhenotypicSeriesFold" onclick="ga('send', 'event', 'Unfurl', 'PhenotypicSeries', 'omim.org')">
<span class="caret"></span>
<span class="sr-only">Toggle Dropdown</span>
</button>
</div>
&nbsp;
<div class="btn-group">
<button type="button" class="btn btn-success dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
PheneGene Graphics <span class="caret"></span>
</button>
<ul class="dropdown-menu" style="width: 17em;">
<li><a href="/graph/linear/616172" target="_blank" onclick="gtag('event', 'mim_graph', {'destination': 'Linear'})"> Linear </a></li>
<li><a href="/graph/radial/616172" target="_blank" onclick="gtag('event', 'mim_graph', {'destination': 'Radial'})"> Radial </a></li>
</ul>
</div>
<span class="glyphicon glyphicon-question-sign mim-tip-hint" title="OMIM PheneGene graphics depict relationships between phenotypes, groups of related phenotypes (Phenotypic Series), and genes.<br /><a href='/static/omim/pdf/OMIM_Graphics.pdf' target='_blank'>A quick reference overview and guide (PDF)</a>"></span>
<div>
<p />
</div>
<div id="mimClinicalSynopsisFold" class="well well-sm collapse mimSingletonToggleFold">
<div class="small" style="margin: 5px">
<div>
<div>
<span class="h5 mim-font">
<strong> INHERITANCE </strong>
</span>
</div>
<div style="margin-left: 2em;">
<div>
<span class="mim-font">
- Autosomal dominant <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/263681008" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">263681008</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/771269000" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">771269000</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0443147&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0443147</a>, <a href="https://bioportal.bioontology.org/search?q=C1867440&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C1867440</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0000006" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0000006</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0000006" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0000006</a>]</span><br />
</span>
</div>
</div>
</div>
<div>
<div>
<span class="h5 mim-font">
<strong> NEUROLOGIC </strong>
</span>
</div>
<div style="margin-left: 2em;">
<div>
<div>
<span class="h5 mim-font">
<em> Central Nervous System </em>
</span>
</div>
<div style="margin-left: 2em;">
<span class="mim-font">
- Seizures, febrile <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/41497008" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">41497008</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/R56.00" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">R56.00</a>, <a href="https://purl.bioontology.org/ontology/ICD10CM/R56.0" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">R56.0</a>]</span> <span class="mim-feature-ids hidden">[ICD9CM: <a href="https://purl.bioontology.org/ontology/ICD9CM/780.31" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">780.31</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0009952&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0009952</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002373" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002373</a>]</span><br /> -
Seizures, afebrile <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0863106&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0863106</a>]</span><br /> -
Generalized tonic-clonic seizures <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/1217136003" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">1217136003</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/G40.4" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">G40.4</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0494475&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0494475</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002069" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002069</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0025190" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0025190</a>]</span><br /> -
Atonic seizures <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0270846&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0270846</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0010819" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0010819</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0010819" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0010819</a>]</span><br /> -
Absence seizures <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/79631006" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">79631006</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C4316903&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C4316903</a>, <a href="https://bioportal.bioontology.org/search?q=C0014553&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0014553</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002121" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002121</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002121" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002121</a>]</span><br /> -
Complex partial seizures <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0149958&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0149958</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002384" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002384</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002384" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002384</a>]</span><br /> -
Myoclonic-astatic seizures <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/230421008" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">230421008</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/G40.4" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">G40.4</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0393702&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0393702</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0011170" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0011170</a>]</span><br /> -
Multifocal discharges seen on EEG <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C3550325&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C3550325</a>]</span><br /> -
Delayed psychomotor development (in some patients) <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/224958001" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">224958001</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/F88" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">F88</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0557874&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0557874</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001263" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001263</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001263" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001263</a>]</span><br />
</span>
</div>
</div>
</div>
</div>
<div>
<div>
<span class="h5 mim-font">
<strong> MISCELLANEOUS </strong>
</span>
</div>
<div style="margin-left: 2em;">
<div>
<span class="mim-font">
- Onset in early childhood<br /> -
Seizures tend to remit later in childhood<br /> -
Variable severity <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C1861403&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C1861403</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003828" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003828</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003828" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003828</a>]</span><br /> -
Usually favorable response to treatment<br />
</span>
</div>
</div>
</div>
<div>
<div>
<span class="h5 mim-font">
<strong> MOLECULAR BASIS </strong>
</span>
</div>
<div style="margin-left: 2em;">
<div>
<span class="mim-font">
- Caused by mutation in the syntaxin 1B gene (STX1B, <a href="/entry/601485#0001">601485.0001</a>)<br />
</span>
</div>
</div>
</div>
<div class="text-right">
<a href="#mimClinicalSynopsisFold" data-toggle="collapse">&#9650;&nbsp;Close</a>
</div>
</div>
</div>
<div id="mimPhenotypicSeriesFold" class="well well-sm collapse mimSingletonToggleFold">
<div class="small">
<div class="row">
<div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
<h5>
Epilepsy, generalized, with febrile seizures plus
- <a href="/phenotypicSeries/PS604233">PS604233</a>
- 16 Entries
</h5>
</div>
</div>
<div class="row" style="margin-left: 0.125em; margin-right: 0.125em;">
<table class="table table-bordered table-condensed table-hover mim-table-padding">
<thead>
<tr>
<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
<strong>Location</strong>
</th>
<th class="col-lg-5 col-md-5 col-sm-5 col-xs-6 text-nowrap">
<strong>Phenotype</strong>
</th>
<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
<strong>Inheritance</strong>
</th>
<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
<strong>Phenotype<br />mapping key</strong>
</th>
<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
<strong>Phenotype<br />MIM number</strong>
</th>
<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
<strong>Gene/Locus</strong>
</th>
<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
<strong>Gene/Locus<br />MIM number</strong>
</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/1/61?start=-3&limit=10&highlight=61"> 1p36.33 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613060"> {?Generalized epilepsy with febrile seizures plus, type 5, susceptibility to} </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613060"> 613060 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/137163"> GABRD </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/137163"> 137163 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/2/53?start=-3&limit=10&highlight=53"> 2p24 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/609800"> Generalized epilepsy with febrile seizures plus, type 4 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="2 - The disorder was placed on the map by statistical methods"> 2 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/609800"> 609800 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/609800"> GEFSP4 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/609800"> 609800 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/2/677?start=-3&limit=10&highlight=677"> 2q23-q24 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613863"> Generalized epilepsy with febrile seizures plus, type 7 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="2 - The disorder was placed on the map by statistical methods"> 2 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613863"> 613863 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613863"> GEFSP7 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613863"> 613863 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/2/740?start=-3&limit=10&highlight=740"> 2q24.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604403"> Febrile seizures, familial, 3A </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604403"> 604403 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/182389"> SCN1A </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/182389"> 182389 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/2/740?start=-3&limit=10&highlight=740"> 2q24.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604403"> Generalized epilepsy with febrile seizures plus, type 2 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604403"> 604403 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/182389"> SCN1A </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/182389"> 182389 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/5/149?start=-3&limit=10&highlight=149"> 5p12 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/618482"> Generalized epilepsy with febrile seizures plus, type 10 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/618482"> 618482 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602780"> HCN1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602780"> 602780 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/5/736?start=-3&limit=10&highlight=736"> 5q34 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607681"> Generalized epilepsy with febrile seizures plus, type 3 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607681"> 607681 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/137164"> GABRG2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/137164"> 137164 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/5/736?start=-3&limit=10&highlight=736"> 5q34 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607681"> Febrile seizures, familial, 8 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607681"> 607681 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/137164"> GABRG2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/137164"> 137164 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/6/731?start=-3&limit=10&highlight=731"> 6q16.3-q22.31 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613828"> Generalized epilepsy with febrile seizures plus, type 8 </a>
</span>
</td>
<td>
<span class="mim-font">
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="2 - The disorder was placed on the map by statistical methods"> 2 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613828"> 613828 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613828"> GEFSP8 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613828"> 613828 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/8/2?start=-3&limit=10&highlight=2"> 8p23-p21 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/612279"> Generalized epilepsy with febrile seizures plus, type 6 </a>
</span>
</td>
<td>
<span class="mim-font">
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="2 - The disorder was placed on the map by statistical methods"> 2 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/612279"> 612279 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/612279"> GEFSP6 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/612279"> 612279 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/16/374?start=-3&limit=10&highlight=374"> 16p11.2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616172"> Generalized epilepsy with febrile seizures plus, type 9 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616172"> 616172 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601485"> STX1B </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601485"> 601485 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/19/21?start=-3&limit=10&highlight=21"> 19p13.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602477"> Febrile seizures, familial, 2 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602477"> 602477 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602781"> HCN2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602781"> 602781 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/19/21?start=-3&limit=10&highlight=21"> 19p13.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602477"> Generalized epilepsy with febrile seizures plus, type 11 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602477"> 602477 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602781"> HCN2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602781"> 602781 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/19/21?start=-3&limit=10&highlight=21"> 19p13.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602477"> {Epilepsy, idiopathic generalized, susceptibility to, 17} </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602477"> 602477 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602781"> HCN2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602781"> 602781 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/19/567?start=-3&limit=10&highlight=567"> 19q13.11 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604233"> Generalized epilepsy with febrile seizures plus, type 1 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604233"> 604233 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600235"> SCN1B </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600235"> 600235 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/20/282?start=-3&limit=10&highlight=282"> 20q11.23 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/620755"> Generalized epilepsy with febrile seizures plus, type 12 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/620755"> 620755 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616440"> SLC32A1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616440"> 616440 </a>
</span>
</td>
</tr>
</tbody>
</table>
</div>
<div class="text-right small">
<a href="#mimPhenotypicSeriesFold" data-toggle="collapse">&#9650;&nbsp;Close</a>
</div>
</div>
</div>
</div>
<div>
<br />
</div>
<div>
<a id="text" class="mim-anchor"></a>
<h4 href="#mimTextFold" id="mimTextToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
<span id="mimTextToggleTriangle" class="small mimTextToggleTriangle">&#9660;</span>
<span class="mim-font">
<span class="mim-tip-floating" qtip_title="<strong>Looking For More References?</strong>" qtip_text="Click the 'reference plus' icon &lt;span class='glyphicon glyphicon-plus-sign'&gt;&lt;/span&gt at the end of each OMIM text paragraph to see more references related to the content of the preceding paragraph.">
<strong>TEXT</strong>
</span>
</span>
</h4>
<div id="mimTextFold" class="collapse in ">
<span class="mim-text-font">
<p>A number sign (#) is used with this entry because of evidence that generalized epilepsy with febrile seizures plus-9 (GEFSP9) is caused by heterozygous mutation in the STX1B gene (<a href="/entry/601485">601485</a>) on chromosome 16p11.</p>
</span>
<div>
<br />
</div>
</div>
<div>
<a id="description" class="mim-anchor"></a>
<h4 href="#mimDescriptionFold" id="mimDescriptionToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
<span id="mimDescriptionToggleTriangle" class="small mimTextToggleTriangle">&#9660;</span>
<span class="mim-font">
<strong>Description</strong>
</span>
</h4>
</div>
<div id="mimDescriptionFold" class="collapse in ">
<span class="mim-text-font">
<p>Generalized epilepsy with febrile seizures plus-9 is an autosomal dominant neurologic disorder characterized by onset of febrile and/or afebrile seizures in early childhood, usually before age 3 years. Seizure types are variable and include generalized tonic-clonic, atonic, myoclonic, complex partial, and absence. Most patients have remission of seizures later in childhood with no residual neurologic deficits, but rare patients may show mild developmental delay or mild intellectual disabilities (summary by <a href="#2" class="mim-tip-reference" title="Schubert, J., Siekierska, A., Langlois, M., May, P., Huneau, C., Becker, F., Muhle, H., Suls, A., Lemke, J. R., de Kovel, C. G. F., Thiele, H., Konrad, K., and 36 others. &lt;strong&gt;Mutations in STX1B, encoding a presynaptic protein, cause fever-associated epilepsy syndromes.&lt;/strong&gt; Nature Genet. 46: 1327-1332, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/25362483/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;25362483&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ng.3130&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="25362483">Schubert et al., 2014</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=25362483" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p>For a general phenotypic description and a discussion of genetic heterogeneity of GEFS+, see <a href="/entry/604233">604233</a>.</p>
</span>
<div>
<br />
</div>
</div>
<div>
<a id="clinicalFeatures" class="mim-anchor"></a>
<h4 href="#mimClinicalFeaturesFold" id="mimClinicalFeaturesToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
<span id="mimClinicalFeaturesToggleTriangle" class="small mimTextToggleTriangle">&#9660;</span>
<span class="mim-font">
<strong>Clinical Features</strong>
</span>
</h4>
</div>
<div id="mimClinicalFeaturesFold" class="collapse in mimTextToggleFold">
<span class="mim-text-font">
<p><a href="#1" class="mim-tip-reference" title="Lerche, H., Weber, Y. G., Baier, H., Jurkat-Rott, K., Kraus de Camargo, O., Ludolph, A. C., Bode, H., Lehmann-Horn, F. &lt;strong&gt;Generalized epilepsy with febrile seizures plus: further heterogeneity in a large family.&lt;/strong&gt; Neurology 57: 1191-1198, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11591834/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11591834&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1212/wnl.57.7.1191&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11591834">Lerche et al. (2001)</a> reported a large 5-generation German family in which 18 individuals experienced early-onset febrile and/or afebrile seizures, with great variability in presentation and course. <a href="#2" class="mim-tip-reference" title="Schubert, J., Siekierska, A., Langlois, M., May, P., Huneau, C., Becker, F., Muhle, H., Suls, A., Lemke, J. R., de Kovel, C. G. F., Thiele, H., Konrad, K., and 36 others. &lt;strong&gt;Mutations in STX1B, encoding a presynaptic protein, cause fever-associated epilepsy syndromes.&lt;/strong&gt; Nature Genet. 46: 1327-1332, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/25362483/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;25362483&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ng.3130&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="25362483">Schubert et al. (2014)</a> provided follow-up of the family reported by <a href="#1" class="mim-tip-reference" title="Lerche, H., Weber, Y. G., Baier, H., Jurkat-Rott, K., Kraus de Camargo, O., Ludolph, A. C., Bode, H., Lehmann-Horn, F. &lt;strong&gt;Generalized epilepsy with febrile seizures plus: further heterogeneity in a large family.&lt;/strong&gt; Neurology 57: 1191-1198, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11591834/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11591834&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1212/wnl.57.7.1191&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11591834">Lerche et al. (2001)</a>, noting that several family members with a slightly atypical phenotype who were thought to be affected did not carry the pathogenic STX1B mutation. Six individuals had the core phenotype and carried the mutation. Five patients had onset of both febrile and afebrile seizures around 2 years of age; 1 patient had only afebrile seizures. Seizure types included generalized tonic-clonic, tonic, atonic, and absence. All patients became seizure-free later in childhood. Two individuals with seizures had been diagnosed with Asperger syndrome, but neurologic and cognitive development was normal in all other patients. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=25362483+11591834" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#3" class="mim-tip-reference" title="Weber, Y. G., Jacob, M., Weber, G., Lerche, H. &lt;strong&gt;A BFIS-like syndrome with late onset and febrile seizures: suggestive linkage to chromosome 16p11.2-16q12.1.&lt;/strong&gt; Epilepsia 49: 1959-1964, 2008.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/18479394/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;18479394&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1111/j.1528-1167.2008.01646.x&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="18479394">Weber et al. (2008)</a> reported a large 4-generation German family in which 8 individuals had various forms of febrile and/or afebrile seizures. Six patients had several febrile seizures between the ages of 10 months and 4 years, 5 of whom also developed afebrile seizures, either generalized tonic-clonic, atonic, or complex partial. Two patients only had afebrile atonic and generalized tonic-clonic seizures, respectively. EEG during early childhood showed multifocal and generalized discharges, but these abnormalities tended to disappear between ages 2 and 6 years, except in 1 patient whose EEG was still abnormal at age 15. All patients had a good response to treatment, and most were able to discontinue treatment later in childhood without recurrence of seizures. Neurologic examination was unremarkable in all patients, although 2 had reduced intelligence and concentration deficit. <a href="#3" class="mim-tip-reference" title="Weber, Y. G., Jacob, M., Weber, G., Lerche, H. &lt;strong&gt;A BFIS-like syndrome with late onset and febrile seizures: suggestive linkage to chromosome 16p11.2-16q12.1.&lt;/strong&gt; Epilepsia 49: 1959-1964, 2008.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/18479394/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;18479394&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1111/j.1528-1167.2008.01646.x&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="18479394">Weber et al. (2008)</a> noted that the phenotype was similar to benign familial infantile seizures, but that there were some distinctive features, including later onset of seizures after 12 months of age and a high rate of febrile seizures. In a follow-up of the family reported by <a href="#3" class="mim-tip-reference" title="Weber, Y. G., Jacob, M., Weber, G., Lerche, H. &lt;strong&gt;A BFIS-like syndrome with late onset and febrile seizures: suggestive linkage to chromosome 16p11.2-16q12.1.&lt;/strong&gt; Epilepsia 49: 1959-1964, 2008.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/18479394/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;18479394&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1111/j.1528-1167.2008.01646.x&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="18479394">Weber et al. (2008)</a>, <a href="#2" class="mim-tip-reference" title="Schubert, J., Siekierska, A., Langlois, M., May, P., Huneau, C., Becker, F., Muhle, H., Suls, A., Lemke, J. R., de Kovel, C. G. F., Thiele, H., Konrad, K., and 36 others. &lt;strong&gt;Mutations in STX1B, encoding a presynaptic protein, cause fever-associated epilepsy syndromes.&lt;/strong&gt; Nature Genet. 46: 1327-1332, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/25362483/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;25362483&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ng.3130&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="25362483">Schubert et al. (2014)</a> noted that all affected individuals were seizure-free. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=18479394+25362483" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#2" class="mim-tip-reference" title="Schubert, J., Siekierska, A., Langlois, M., May, P., Huneau, C., Becker, F., Muhle, H., Suls, A., Lemke, J. R., de Kovel, C. G. F., Thiele, H., Konrad, K., and 36 others. &lt;strong&gt;Mutations in STX1B, encoding a presynaptic protein, cause fever-associated epilepsy syndromes.&lt;/strong&gt; Nature Genet. 46: 1327-1332, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/25362483/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;25362483&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ng.3130&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="25362483">Schubert et al. (2014)</a> reported a Dutch girl with GEFSP9 who developed seizures at age 10 months. She had normal psychomotor development at age 16 months. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=25362483" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><strong><em>Clinical Variability</em></strong></p><p>
<a href="#2" class="mim-tip-reference" title="Schubert, J., Siekierska, A., Langlois, M., May, P., Huneau, C., Becker, F., Muhle, H., Suls, A., Lemke, J. R., de Kovel, C. G. F., Thiele, H., Konrad, K., and 36 others. &lt;strong&gt;Mutations in STX1B, encoding a presynaptic protein, cause fever-associated epilepsy syndromes.&lt;/strong&gt; Nature Genet. 46: 1327-1332, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/25362483/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;25362483&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ng.3130&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="25362483">Schubert et al. (2014)</a> reported 3 unrelated patients with a more severe phenotype associated with mutation in or deletion of the STX1B gene. An adult Swiss patient developed generalized tonic-clonic seizures at age 3.5 years. He had speech delay and later showed moderate intellectual disability (IQ of 48), ataxia, and cerebellar atrophy. The seizures were highly pharmacoresistant. A German girl developed febrile seizures at age 13 months, severe and frequent myoclonic-astatic seizures at age 19 months, and afebrile seizures associated with status epilepticus at age 3 years. She showed global developmental delay, mild intellectual disability, and mild ataxia. An unrelated German girl, who had a deletion encompassing the STX1B gene, developed seizures consistent with myoclonic-astatic epilepsy at age 13 months after showing mild global developmental delay. At age 2 years, she had hypotonia and was developmentally delayed. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=25362483" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
</span>
<div>
<br />
</div>
</div>
<div>
<a id="inheritance" class="mim-anchor"></a>
<h4 href="#mimInheritanceFold" id="mimInheritanceToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
<span id="mimInheritanceToggleTriangle" class="small mimTextToggleTriangle">&#9660;</span>
<span class="mim-font">
<strong>Inheritance</strong>
</span>
</h4>
</div>
<div id="mimInheritanceFold" class="collapse in mimTextToggleFold">
<span class="mim-text-font">
<p>The transmission pattern of GEFSP9 in the families reported by <a href="#1" class="mim-tip-reference" title="Lerche, H., Weber, Y. G., Baier, H., Jurkat-Rott, K., Kraus de Camargo, O., Ludolph, A. C., Bode, H., Lehmann-Horn, F. &lt;strong&gt;Generalized epilepsy with febrile seizures plus: further heterogeneity in a large family.&lt;/strong&gt; Neurology 57: 1191-1198, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11591834/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11591834&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1212/wnl.57.7.1191&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11591834">Lerche et al. (2001)</a> and <a href="#3" class="mim-tip-reference" title="Weber, Y. G., Jacob, M., Weber, G., Lerche, H. &lt;strong&gt;A BFIS-like syndrome with late onset and febrile seizures: suggestive linkage to chromosome 16p11.2-16q12.1.&lt;/strong&gt; Epilepsia 49: 1959-1964, 2008.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/18479394/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;18479394&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1111/j.1528-1167.2008.01646.x&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="18479394">Weber et al. (2008)</a> was consistent with autosomal dominant inheritance. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=18479394+11591834" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
</span>
<div>
<br />
</div>
</div>
<div>
<a id="mapping" class="mim-anchor"></a>
<h4 href="#mimMappingFold" id="mimMappingToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
<span id="mimMappingToggleTriangle" class="small mimTextToggleTriangle">&#9660;</span>
<span class="mim-font">
<strong>Mapping</strong>
</span>
</h4>
</div>
<div id="mimMappingFold" class="collapse in mimTextToggleFold">
<span class="mim-text-font">
<p>By linkage analysis of a large German family with early-onset febrile and afebrile seizures, <a href="#3" class="mim-tip-reference" title="Weber, Y. G., Jacob, M., Weber, G., Lerche, H. &lt;strong&gt;A BFIS-like syndrome with late onset and febrile seizures: suggestive linkage to chromosome 16p11.2-16q12.1.&lt;/strong&gt; Epilepsia 49: 1959-1964, 2008.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/18479394/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;18479394&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1111/j.1528-1167.2008.01646.x&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="18479394">Weber et al. (2008)</a> found evidence suggestive of linkage to chromosome 16p11.2-q12.1 (maximum lod score of 2.1 at marker D16S411). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=18479394" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
</span>
<div>
<br />
</div>
</div>
<div>
<a id="molecularGenetics" class="mim-anchor"></a>
<h4 href="#mimMolecularGeneticsFold" id="mimMolecularGeneticsToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
<span id="mimMolecularGeneticsToggleTriangle" class="small mimTextToggleTriangle">&#9660;</span>
<span class="mim-font">
<strong>Molecular Genetics</strong>
</span>
</h4>
</div>
<div id="mimMolecularGeneticsFold" class="collapse in mimTextToggleFold">
<span class="mim-text-font">
<p>In affected members of the families with GEFSP9 reported by <a href="#1" class="mim-tip-reference" title="Lerche, H., Weber, Y. G., Baier, H., Jurkat-Rott, K., Kraus de Camargo, O., Ludolph, A. C., Bode, H., Lehmann-Horn, F. &lt;strong&gt;Generalized epilepsy with febrile seizures plus: further heterogeneity in a large family.&lt;/strong&gt; Neurology 57: 1191-1198, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11591834/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;11591834&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1212/wnl.57.7.1191&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="11591834">Lerche et al. (2001)</a> and <a href="#3" class="mim-tip-reference" title="Weber, Y. G., Jacob, M., Weber, G., Lerche, H. &lt;strong&gt;A BFIS-like syndrome with late onset and febrile seizures: suggestive linkage to chromosome 16p11.2-16q12.1.&lt;/strong&gt; Epilepsia 49: 1959-1964, 2008.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/18479394/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;18479394&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1111/j.1528-1167.2008.01646.x&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="18479394">Weber et al. (2008)</a>, <a href="#2" class="mim-tip-reference" title="Schubert, J., Siekierska, A., Langlois, M., May, P., Huneau, C., Becker, F., Muhle, H., Suls, A., Lemke, J. R., de Kovel, C. G. F., Thiele, H., Konrad, K., and 36 others. &lt;strong&gt;Mutations in STX1B, encoding a presynaptic protein, cause fever-associated epilepsy syndromes.&lt;/strong&gt; Nature Genet. 46: 1327-1332, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/25362483/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;25362483&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ng.3130&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="25362483">Schubert et al. (2014)</a> identified different heterozygous truncating mutations in the STX1B gene (<a href="/entry/601485#0001">601485.0001</a> and <a href="/entry/601485#0002">601485.0002</a>, respectively). The mutations, which were found by whole-exome sequencing, segregated with the disorder in the families. Sequencing of the GEFSP9 gene in 3 additional cohorts of patients with seizures identified a mutation in 1 of 299 probands with febrile seizures or epileptic encephalopathies; in 1 of 81 adults with various forms of epilepsy and intellectual disability; and in 1 of 68 patients with epileptic encephalopathies. A de novo microdeletion encompassing the STX1B gene was found in a further patient with myoclonic-astatic epilepsy. <a href="#2" class="mim-tip-reference" title="Schubert, J., Siekierska, A., Langlois, M., May, P., Huneau, C., Becker, F., Muhle, H., Suls, A., Lemke, J. R., de Kovel, C. G. F., Thiele, H., Konrad, K., and 36 others. &lt;strong&gt;Mutations in STX1B, encoding a presynaptic protein, cause fever-associated epilepsy syndromes.&lt;/strong&gt; Nature Genet. 46: 1327-1332, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/25362483/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;25362483&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ng.3130&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="25362483">Schubert et al. (2014)</a> noted the wide phenotypic spectrum of epilepsy associated with STX1B mutations, ranging from incomplete penetrance without symptoms to simple febrile seizures to severe epileptic encephalopathies. The findings implicated the STX1B gene and the presynaptic release machinery in fever-associated epilepsy syndromes. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=25362483+18479394+11591834" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
</span>
<div>
<br />
</div>
</div>
<div>
<a id="animalModel" class="mim-anchor"></a>
<h4 href="#mimAnimalModelFold" id="mimAnimalModelToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
<span id="mimAnimalModelToggleTriangle" class="small mimTextToggleTriangle">&#9660;</span>
<span class="mim-font">
<strong>Animal Model</strong>
</span>
</h4>
</div>
<div id="mimAnimalModelFold" class="collapse in mimTextToggleFold">
<span class="mim-text-font">
<p><a href="#2" class="mim-tip-reference" title="Schubert, J., Siekierska, A., Langlois, M., May, P., Huneau, C., Becker, F., Muhle, H., Suls, A., Lemke, J. R., de Kovel, C. G. F., Thiele, H., Konrad, K., and 36 others. &lt;strong&gt;Mutations in STX1B, encoding a presynaptic protein, cause fever-associated epilepsy syndromes.&lt;/strong&gt; Nature Genet. 46: 1327-1332, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/25362483/&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed&#x27;, &#x27;domain&#x27;: &#x27;pubmed.ncbi.nlm.nih.gov&#x27;})&quot;&gt;25362483&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1038/ng.3130&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="25362483">Schubert et al. (2014)</a> found that morpholino knockout of the stx1b gene in zebrafish resulted in abnormal episodic behavior, including repetitive fin fluttering, increased orofacial movements, and myoclonus-like jerks, as well as abnormal spontaneous epileptiform brain activity with polyspiking discharges and high-frequency oscillations. Elevation of temperature increased the occurrence of epileptiform events, specifically high-frequency oscillations. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=25362483" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
</span>
<div>
<br />
</div>
</div>
</div>
<div>
<a id="references"class="mim-anchor"></a>
<h4 href="#mimReferencesFold" id="mimReferencesToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
<span class="mim-font">
<span id="mimReferencesToggleTriangle" class="small mimTextToggleTriangle">&#9660;</span>
<strong>REFERENCES</strong>
</span>
</h4>
<div>
<p />
</div>
<div id="mimReferencesFold" class="collapse in mimTextToggleFold">
<ol>
<li>
<a id="1" class="mim-anchor"></a>
<a id="Lerche2001" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Lerche, H., Weber, Y. G., Baier, H., Jurkat-Rott, K., Kraus de Camargo, O., Ludolph, A. C., Bode, H., Lehmann-Horn, F.
<strong>Generalized epilepsy with febrile seizures plus: further heterogeneity in a large family.</strong>
Neurology 57: 1191-1198, 2001.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/11591834/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">11591834</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=11591834" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1212/wnl.57.7.1191" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="2" class="mim-anchor"></a>
<a id="Schubert2014" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Schubert, J., Siekierska, A., Langlois, M., May, P., Huneau, C., Becker, F., Muhle, H., Suls, A., Lemke, J. R., de Kovel, C. G. F., Thiele, H., Konrad, K., and 36 others.
<strong>Mutations in STX1B, encoding a presynaptic protein, cause fever-associated epilepsy syndromes.</strong>
Nature Genet. 46: 1327-1332, 2014.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/25362483/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">25362483</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=25362483" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1038/ng.3130" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="3" class="mim-anchor"></a>
<a id="Weber2008" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Weber, Y. G., Jacob, M., Weber, G., Lerche, H.
<strong>A BFIS-like syndrome with late onset and febrile seizures: suggestive linkage to chromosome 16p11.2-16q12.1.</strong>
Epilepsia 49: 1959-1964, 2008.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/18479394/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">18479394</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=18479394" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1111/j.1528-1167.2008.01646.x" target="_blank">Full Text</a>]
</p>
</div>
</li>
</ol>
<div>
<br />
</div>
</div>
</div>
<div>
<a id="creationDate" class="mim-anchor"></a>
<div class="row">
<div class="col-lg-2 col-md-2 col-sm-4 col-xs-4">
<span class="text-nowrap mim-text-font">
Creation Date:
</span>
</div>
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
Cassandra L. Kniffin : 1/7/2015
</span>
</div>
</div>
</div>
<div>
<a id="editHistory" class="mim-anchor"></a>
<div class="row">
<div class="col-lg-2 col-md-2 col-sm-4 col-xs-4">
<span class="text-nowrap mim-text-font">
<a href="#mimCollapseEditHistory" role="button" data-toggle="collapse"> Edit History: </a>
</span>
</div>
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
carol : 05/09/2017
</span>
</div>
</div>
<div class="row collapse" id="mimCollapseEditHistory">
<div class="col-lg-offset-2 col-md-offset-2 col-sm-offset-4 col-xs-offset-4 col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
carol : 01/09/2015<br>mcolton : 1/8/2015<br>ckniffin : 1/8/2015
</span>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="container visible-print-block">
<div class="row">
<div class="col-md-8 col-md-offset-1">
<div>
<div>
<h3>
<span class="mim-font">
<strong>#</strong> 616172
</span>
</h3>
</div>
<div>
<h3>
<span class="mim-font">
GENERALIZED EPILEPSY WITH FEBRILE SEIZURES PLUS, TYPE 9; GEFSP9
</span>
</h3>
</div>
<div>
<br />
</div>
<div>
<div >
<p>
<span class="mim-font">
<em>Alternative titles; symbols</em>
</span>
</p>
</div>
<div>
<h4>
<span class="mim-font">
GEFS+, TYPE 9; GEFS+9
</span>
</h4>
</div>
</div>
<div>
<br />
</div>
</div>
<div>
<p>
<span class="mim-text-font">
<strong>ORPHA:</strong> 36387; &nbsp;
<strong>DO:</strong> 0111301; &nbsp;
</span>
</p>
</div>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>Phenotype-Gene Relationships</strong>
</span>
</h4>
<div>
<table class="table table-bordered table-condensed small mim-table-padding">
<thead>
<tr class="active">
<th>
Location
</th>
<th>
Phenotype
</th>
<th>
Phenotype <br /> MIM number
</th>
<th>
Inheritance
</th>
<th>
Phenotype <br /> mapping key
</th>
<th>
Gene/Locus
</th>
<th>
Gene/Locus <br /> MIM number
</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<span class="mim-font">
16p11.2
</span>
</td>
<td>
<span class="mim-font">
Generalized epilepsy with febrile seizures plus, type 9
</span>
</td>
<td>
<span class="mim-font">
616172
</span>
</td>
<td>
<span class="mim-font">
Autosomal dominant
</span>
</td>
<td>
<span class="mim-font">
3
</span>
</td>
<td>
<span class="mim-font">
STX1B
</span>
</td>
<td>
<span class="mim-font">
601485
</span>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>TEXT</strong>
</span>
</h4>
<span class="mim-text-font">
<p>A number sign (#) is used with this entry because of evidence that generalized epilepsy with febrile seizures plus-9 (GEFSP9) is caused by heterozygous mutation in the STX1B gene (601485) on chromosome 16p11.</p>
</span>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>Description</strong>
</span>
</h4>
</div>
<span class="mim-text-font">
<p>Generalized epilepsy with febrile seizures plus-9 is an autosomal dominant neurologic disorder characterized by onset of febrile and/or afebrile seizures in early childhood, usually before age 3 years. Seizure types are variable and include generalized tonic-clonic, atonic, myoclonic, complex partial, and absence. Most patients have remission of seizures later in childhood with no residual neurologic deficits, but rare patients may show mild developmental delay or mild intellectual disabilities (summary by Schubert et al., 2014). </p><p>For a general phenotypic description and a discussion of genetic heterogeneity of GEFS+, see 604233.</p>
</span>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>Clinical Features</strong>
</span>
</h4>
</div>
<span class="mim-text-font">
<p>Lerche et al. (2001) reported a large 5-generation German family in which 18 individuals experienced early-onset febrile and/or afebrile seizures, with great variability in presentation and course. Schubert et al. (2014) provided follow-up of the family reported by Lerche et al. (2001), noting that several family members with a slightly atypical phenotype who were thought to be affected did not carry the pathogenic STX1B mutation. Six individuals had the core phenotype and carried the mutation. Five patients had onset of both febrile and afebrile seizures around 2 years of age; 1 patient had only afebrile seizures. Seizure types included generalized tonic-clonic, tonic, atonic, and absence. All patients became seizure-free later in childhood. Two individuals with seizures had been diagnosed with Asperger syndrome, but neurologic and cognitive development was normal in all other patients. </p><p>Weber et al. (2008) reported a large 4-generation German family in which 8 individuals had various forms of febrile and/or afebrile seizures. Six patients had several febrile seizures between the ages of 10 months and 4 years, 5 of whom also developed afebrile seizures, either generalized tonic-clonic, atonic, or complex partial. Two patients only had afebrile atonic and generalized tonic-clonic seizures, respectively. EEG during early childhood showed multifocal and generalized discharges, but these abnormalities tended to disappear between ages 2 and 6 years, except in 1 patient whose EEG was still abnormal at age 15. All patients had a good response to treatment, and most were able to discontinue treatment later in childhood without recurrence of seizures. Neurologic examination was unremarkable in all patients, although 2 had reduced intelligence and concentration deficit. Weber et al. (2008) noted that the phenotype was similar to benign familial infantile seizures, but that there were some distinctive features, including later onset of seizures after 12 months of age and a high rate of febrile seizures. In a follow-up of the family reported by Weber et al. (2008), Schubert et al. (2014) noted that all affected individuals were seizure-free. </p><p>Schubert et al. (2014) reported a Dutch girl with GEFSP9 who developed seizures at age 10 months. She had normal psychomotor development at age 16 months. </p><p><strong><em>Clinical Variability</em></strong></p><p>
Schubert et al. (2014) reported 3 unrelated patients with a more severe phenotype associated with mutation in or deletion of the STX1B gene. An adult Swiss patient developed generalized tonic-clonic seizures at age 3.5 years. He had speech delay and later showed moderate intellectual disability (IQ of 48), ataxia, and cerebellar atrophy. The seizures were highly pharmacoresistant. A German girl developed febrile seizures at age 13 months, severe and frequent myoclonic-astatic seizures at age 19 months, and afebrile seizures associated with status epilepticus at age 3 years. She showed global developmental delay, mild intellectual disability, and mild ataxia. An unrelated German girl, who had a deletion encompassing the STX1B gene, developed seizures consistent with myoclonic-astatic epilepsy at age 13 months after showing mild global developmental delay. At age 2 years, she had hypotonia and was developmentally delayed. </p>
</span>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>Inheritance</strong>
</span>
</h4>
</div>
<span class="mim-text-font">
<p>The transmission pattern of GEFSP9 in the families reported by Lerche et al. (2001) and Weber et al. (2008) was consistent with autosomal dominant inheritance. </p>
</span>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>Mapping</strong>
</span>
</h4>
</div>
<span class="mim-text-font">
<p>By linkage analysis of a large German family with early-onset febrile and afebrile seizures, Weber et al. (2008) found evidence suggestive of linkage to chromosome 16p11.2-q12.1 (maximum lod score of 2.1 at marker D16S411). </p>
</span>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>Molecular Genetics</strong>
</span>
</h4>
</div>
<span class="mim-text-font">
<p>In affected members of the families with GEFSP9 reported by Lerche et al. (2001) and Weber et al. (2008), Schubert et al. (2014) identified different heterozygous truncating mutations in the STX1B gene (601485.0001 and 601485.0002, respectively). The mutations, which were found by whole-exome sequencing, segregated with the disorder in the families. Sequencing of the GEFSP9 gene in 3 additional cohorts of patients with seizures identified a mutation in 1 of 299 probands with febrile seizures or epileptic encephalopathies; in 1 of 81 adults with various forms of epilepsy and intellectual disability; and in 1 of 68 patients with epileptic encephalopathies. A de novo microdeletion encompassing the STX1B gene was found in a further patient with myoclonic-astatic epilepsy. Schubert et al. (2014) noted the wide phenotypic spectrum of epilepsy associated with STX1B mutations, ranging from incomplete penetrance without symptoms to simple febrile seizures to severe epileptic encephalopathies. The findings implicated the STX1B gene and the presynaptic release machinery in fever-associated epilepsy syndromes. </p>
</span>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>Animal Model</strong>
</span>
</h4>
</div>
<span class="mim-text-font">
<p>Schubert et al. (2014) found that morpholino knockout of the stx1b gene in zebrafish resulted in abnormal episodic behavior, including repetitive fin fluttering, increased orofacial movements, and myoclonus-like jerks, as well as abnormal spontaneous epileptiform brain activity with polyspiking discharges and high-frequency oscillations. Elevation of temperature increased the occurrence of epileptiform events, specifically high-frequency oscillations. </p>
</span>
<div>
<br />
</div>
</div>
<div>
<h4>
<span class="mim-font">
<strong>REFERENCES</strong>
</span>
</h4>
<div>
<p />
</div>
<div>
<ol>
<li>
<p class="mim-text-font">
Lerche, H., Weber, Y. G., Baier, H., Jurkat-Rott, K., Kraus de Camargo, O., Ludolph, A. C., Bode, H., Lehmann-Horn, F.
<strong>Generalized epilepsy with febrile seizures plus: further heterogeneity in a large family.</strong>
Neurology 57: 1191-1198, 2001.
[PubMed: 11591834]
[Full Text: https://doi.org/10.1212/wnl.57.7.1191]
</p>
</li>
<li>
<p class="mim-text-font">
Schubert, J., Siekierska, A., Langlois, M., May, P., Huneau, C., Becker, F., Muhle, H., Suls, A., Lemke, J. R., de Kovel, C. G. F., Thiele, H., Konrad, K., and 36 others.
<strong>Mutations in STX1B, encoding a presynaptic protein, cause fever-associated epilepsy syndromes.</strong>
Nature Genet. 46: 1327-1332, 2014.
[PubMed: 25362483]
[Full Text: https://doi.org/10.1038/ng.3130]
</p>
</li>
<li>
<p class="mim-text-font">
Weber, Y. G., Jacob, M., Weber, G., Lerche, H.
<strong>A BFIS-like syndrome with late onset and febrile seizures: suggestive linkage to chromosome 16p11.2-16q12.1.</strong>
Epilepsia 49: 1959-1964, 2008.
[PubMed: 18479394]
[Full Text: https://doi.org/10.1111/j.1528-1167.2008.01646.x]
</p>
</li>
</ol>
<div>
<br />
</div>
</div>
</div>
<div>
<div class="row">
<div class="col-lg-1 col-md-1 col-sm-2 col-xs-2">
<span class="text-nowrap mim-text-font">
Creation Date:
</span>
</div>
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
Cassandra L. Kniffin : 1/7/2015
</span>
</div>
</div>
</div>
<div>
<br />
</div>
<div>
<div class="row">
<div class="col-lg-1 col-md-1 col-sm-2 col-xs-2">
<span class="text-nowrap mim-text-font">
Edit History:
</span>
</div>
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
carol : 05/09/2017<br>carol : 01/09/2015<br>mcolton : 1/8/2015<br>ckniffin : 1/8/2015
</span>
</div>
</div>
</div>
<div>
<br />
</div>
</div>
</div>
</div>
</div>
<div id="mimFooter">
<div class="container ">
<div class="row">
<br />
<br />
</div>
</div>
<div class="hidden-print mim-footer">
<div class="container">
<div class="row">
<p />
</div>
<div class="row text-center small">
NOTE: OMIM is intended for use primarily by physicians and other professionals concerned with genetic disorders, by genetics researchers,
and by advanced students in science and medicine. While the OMIM database is open to the public, users seeking information about a personal
medical or genetic condition are urged to consult with a qualified physician for diagnosis and for answers to personal questions.
<br />
OMIM<sup>&reg;</sup> and Online Mendelian Inheritance in Man<sup>&reg;</sup> are registered trademarks of the Johns Hopkins University.
<br />
Copyright<sup>&reg;</sup> 1966-2025 Johns Hopkins University.
</div>
</div>
</div>
<div class="visible-print-block mim-footer" style="position: relative;">
<div class="container">
<div class="row">
<p />
</div>
<div class="row text-center small">
NOTE: OMIM is intended for use primarily by physicians and other professionals concerned with genetic disorders, by genetics researchers,
and by advanced students in science and medicine. While the OMIM database is open to the public, users seeking information about a personal
medical or genetic condition are urged to consult with a qualified physician for diagnosis and for answers to personal questions.
<br />
OMIM<sup>&reg;</sup> and Online Mendelian Inheritance in Man<sup>&reg;</sup> are registered trademarks of the Johns Hopkins University.
<br />
Copyright<sup>&reg;</sup> 1966-2025 Johns Hopkins University.
<br />
Printed: March 13, 2025
</div>
</div>
</div>
</div>
<div class="modal fade" id="mimDonationPopupModal" tabindex="-1" role="dialog" aria-labelledby="mimDonationPopupModalTitle">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" id="mimDonationPopupCancel" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
<h4 class="modal-title" id="mimDonationPopupModalTitle">
OMIM Donation:
</h4>
</div>
<div class="modal-body">
<div class="row">
<div class="col-lg-offset-1 col-md-offset-1 col-sm-offset-1 col-xs-offset-1 col-lg-10 col-md-10 col-sm-10 col-xs-10">
<p>
Dear OMIM User,
</p>
</div>
</div>
<div class="row">
<div class="col-lg-offset-1 col-md-offset-1 col-sm-offset-1 col-xs-offset-1 col-lg-10 col-md-10 col-sm-10 col-xs-10">
<p>
To ensure long-term funding for the OMIM project, we have diversified
our revenue stream. We are determined to keep this website freely
accessible. Unfortunately, it is not free to produce. Expert curators
review the literature and organize it to facilitate your work. Over 90%
of the OMIM's operating expenses go to salary support for MD and PhD
science writers and biocurators. Please join your colleagues by making a
donation now and again in the future. Donations are an important
component of our efforts to ensure long-term funding to provide you the
information that you need at your fingertips.
</p>
</div>
</div>
<div class="row">
<div class="col-lg-offset-1 col-md-offset-1 col-sm-offset-1 col-xs-offset-1 col-lg-10 col-md-10 col-sm-10 col-xs-10">
<p>
Thank you in advance for your generous support, <br />
Ada Hamosh, MD, MPH <br />
Scientific Director, OMIM <br />
</p>
</div>
</div>
</div>
<div class="modal-footer">
<button type="button" id="mimDonationPopupDonate" class="btn btn-success btn-block" data-dismiss="modal"> Donate To OMIM! </button>
</div>
</div>
</div>
</div>
</div>
</body>
</html>