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Entry
- #613485 - LONG QT SYNDROME 13; LQT13
- OMIM
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<span class="h4">#613485</span>
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<a href="#phenotypeMap"><strong>Phenotype-Gene Relationships</strong></a>
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<a href="/clinicalSynopsis/613485"><strong>Clinical Synopsis</strong></a>
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<a href="/phenotypicSeries/PS192500"> <strong>Phenotypic Series</strong> </a>
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<div><a href="https://www.alliancegenome.org/disease/DOID:0110654" 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/613485" 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:0110654" 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> 101016, 768<br />
<strong>DO:</strong> 0110654<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>
613485
</span>
</span>
</div>
</div>
<div>
<a id="preferredTitle" class="mim-anchor"></a>
<h3>
<span class="mim-font">
LONG QT SYNDROME 13; LQT13
</span>
</h3>
</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/11/1085?start=-3&limit=10&highlight=1085">
11q24.3
</a>
</span>
</td>
<td>
<span class="mim-font">
Long QT syndrome 13
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613485"> 613485 </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">
KCNJ5
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600734"> 600734 </a>
</span>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div>
<div class="btn-group ">
<a href="/clinicalSynopsis/613485" 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/PS192500" 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')">
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&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/613485" target="_blank" onclick="gtag('event', 'mim_graph', {'destination': 'Linear'})"> Linear </a></li>
<li><a href="/graph/radial/613485" 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> CARDIOVASCULAR </strong>
</span>
</div>
<div style="margin-left: 2em;">
<div>
<div>
<span class="h5 mim-font">
<em> Heart </em>
</span>
</div>
<div style="margin-left: 2em;">
<span class="mim-font">
- Syncopal episodes, related to emotional or physical stress <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C4013729&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C4013729</a>]</span><br /> -
Long QT interval on electrocardiogram <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C4017775&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C4017775</a>]</span><br /> -
Ventricular repolarization abnormalities on electrocardiogram <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C4013730&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C4013730</a>]</span><br /> -
Heart failure <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/84114007" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">84114007</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/42343007" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">42343007</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/I50" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">I50</a>, <a href="https://purl.bioontology.org/ontology/ICD10CM/I50.9" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">I50.9</a>]</span> <span class="mim-feature-ids hidden">[ICD9CM: <a href="https://purl.bioontology.org/ontology/ICD9CM/428.0" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">428.0</a>, <a href="https://purl.bioontology.org/ontology/ICD9CM/428" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">428</a>, <a href="https://purl.bioontology.org/ontology/ICD9CM/428.9" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">428.9</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0018802&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0018802</a>, <a href="https://bioportal.bioontology.org/search?q=C0018801&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0018801</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001635" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001635</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001635" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001635</a>]</span><br /> -
Atrial tachycardia <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/276796006" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">276796006</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0546959&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0546959</a>, <a href="https://bioportal.bioontology.org/search?q=C2059391&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C2059391</a>]</span><br /> -
Paroxysmal atrial fibrillation <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/282825002" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">282825002</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/I48.0" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">I48.0</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0235480&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0235480</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0004757" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0004757</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0004757" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0004757</a>]</span><br /> -
Atrioventricular block <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/233917008" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">233917008</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/I44.3" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">I44.3</a>, <a href="https://purl.bioontology.org/ontology/ICD10CM/I44.30" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">I44.30</a>]</span> <span class="mim-feature-ids hidden">[ICD9CM: <a href="https://purl.bioontology.org/ontology/ICD9CM/426.10" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">426.10</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0004245&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0004245</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001678" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001678</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001678" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001678</a>]</span><br /> -
Cardiac arrest <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/397829000" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">397829000</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/410429000" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">410429000</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/I46" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">I46</a>]</span> <span class="mim-feature-ids hidden">[ICD9CM: <a href="https://purl.bioontology.org/ontology/ICD9CM/427.5" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">427.5</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0018790&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0018790</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001695" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001695</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001695" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001695</a>]</span><br />
</span>
</div>
</div>
<div>
<div>
<span class="h5 mim-font">
<em> Vascular </em>
</span>
</div>
<div style="margin-left: 2em;">
<span class="mim-font">
- Hypertension <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/38341003" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">38341003</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/I10" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">I10</a>]</span> <span class="mim-feature-ids hidden">[ICD9CM: <a href="https://purl.bioontology.org/ontology/ICD9CM/401-405.99" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">401-405.99</a>, <a href="https://purl.bioontology.org/ontology/ICD9CM/997.91" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">997.91</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0020538&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0020538</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0000822" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0000822</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0000822" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0000822</a>]</span><br /> -
Coronary artery disease <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/414024009" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">414024009</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/443502000" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">443502000</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/53741008" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">53741008</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/I25.1" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">I25.1</a>, <a href="https://purl.bioontology.org/ontology/ICD10CM/K76.1" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">K76.1</a>, <a href="https://purl.bioontology.org/ontology/ICD10CM/I25.10" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">I25.10</a>]</span> <span class="mim-feature-ids hidden">[ICD9CM: <a href="https://purl.bioontology.org/ontology/ICD9CM/414.0" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">414.0</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C1956346&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C1956346</a>, <a href="https://bioportal.bioontology.org/search?q=C0010054&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0010054</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001677" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001677</a>]</span><br />
</span>
</div>
</div>
</div>
</div>
<div>
<div>
<span class="h5 mim-font">
<strong> RESPIRATORY </strong>
</span>
</div>
<div style="margin-left: 2em;">
<div>
<div>
<span class="h5 mim-font">
<em> Lung </em>
</span>
</div>
<div style="margin-left: 2em;">
<span class="mim-font">
- Pulmonary embolism <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/59282003" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">59282003</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/I26.99" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">I26.99</a>, <a href="https://purl.bioontology.org/ontology/ICD10CM/I26" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">I26</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0034065&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0034065</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002204" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002204</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002204" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002204</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">
- Patients have normal aldosterone/renin ratios and 24-hour urine aldosterone levels<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 member-5 subfamily-J inwardly rectifying potassium channel gene (KCNJ5, <a href="/entry/600734#0001">600734.0001</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>
Long QT syndrome
- <a href="/phenotypicSeries/PS192500">PS192500</a>
- 21 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/2/236?start=-3&limit=10&highlight=236"> 2p21 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616249"> Long QT syndrome 15 </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/616249"> 616249 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114182"> CALM2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114182"> 114182 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/3/27?start=-3&limit=10&highlight=27"> 3p25.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611818"> Long QT syndrome 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/611818"> 611818 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601253"> CAV3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601253"> 601253 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/3/181?start=-3&limit=10&highlight=181"> 3p22.2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/603830"> Long QT syndrome 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/603830"> 603830 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600163"> SCN5A </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600163"> 600163 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/4/502?start=-3&limit=10&highlight=502"> 4q25-q26 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600919"> Cardiac arrhythmia, ankyrin-B-related </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/600919"> 600919 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/106410"> ANK2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/106410"> 106410 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/4/502?start=-3&limit=10&highlight=502"> 4q25-q26 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600919"> Long QT syndrome 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="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600919"> 600919 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/106410"> ANK2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/106410"> 106410 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/7/404?start=-3&limit=10&highlight=404"> 7q21.2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611820"> ?Long QT syndrome 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/611820"> 611820 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604001"> AKAP9 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604001"> 604001 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/7/821?start=-3&limit=10&highlight=821"> 7q36.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613688"> Long QT syndrome 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/613688"> 613688 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/152427"> KCNH2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/152427"> 152427 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/11/82?start=-3&limit=10&highlight=82"> 11p15.5-p15.4 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/192500"> {Long QT syndrome 1, acquired, 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/192500"> 192500 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607542"> KCNQ1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607542"> 607542 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/11/82?start=-3&limit=10&highlight=82"> 11p15.5-p15.4 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/192500"> Long QT syndrome 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/192500"> 192500 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607542"> KCNQ1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607542"> 607542 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/11/976?start=-3&limit=10&highlight=976"> 11q23.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611819"> Long QT syndrome 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/611819"> 611819 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/608256"> SCN4B </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/608256"> 608256 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/11/976?start=-3&limit=10&highlight=976"> 11q23.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611819"> Atrial fibrillation, familial, 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/611819"> 611819 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/608256"> SCN4B </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/608256"> 608256 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/11/1085?start=-3&limit=10&highlight=1085"> 11q24.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613485"> Long QT syndrome 13 </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/613485"> 613485 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600734"> KCNJ5 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600734"> 600734 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/12/18?start=-3&limit=10&highlight=18"> 12p13.33 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/618447"> Long QT syndrome 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/618447"> 618447 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114205"> CACNA1C </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114205"> 114205 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/12/285?start=-3&limit=10&highlight=285"> 12q12 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613688"> {Long QT syndrome, acquired, reduced 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/613688"> 613688 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/603313"> ALG10B </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/603313"> 603313 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/14/455?start=-3&limit=10&highlight=455"> 14q32.11 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616247"> Long QT syndrome 14 </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/616247"> 616247 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114180"> CALM1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114180"> 114180 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/17/893?start=-3&limit=10&highlight=893"> 17q24.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/170390"> Andersen syndrome </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/170390"> 170390 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600681"> KCNJ2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600681"> 600681 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/19/854?start=-3&limit=10&highlight=854"> 19q13.32 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/618782"> ?Ventricular tachycardia, catecholaminergic polymorphic 6 </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/618782"> 618782 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114183"> CALM3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114183"> 114183 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/19/854?start=-3&limit=10&highlight=854"> 19q13.32 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/618782"> Long QT syndrome 16 </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/618782"> 618782 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114183"> CALM3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/114183"> 114183 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/20/213?start=-3&limit=10&highlight=213"> 20q11.21 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/612955"> Long QT syndrome 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/612955"> 612955 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601017"> SNTA1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601017"> 601017 </a>
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<a href="/geneMap/21/79?start=-3&limit=10&highlight=79"> 21q22.11 </a>
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<a href="/entry/613693"> Long QT syndrome 6 </a>
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<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
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<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
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<a href="/entry/613693"> 613693 </a>
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<a href="/entry/603796"> KCNE2 </a>
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<a href="/entry/603796"> 603796 </a>
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<a href="/geneMap/21/80?start=-3&limit=10&highlight=80"> 21q22.12 </a>
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<a href="/entry/613695"> Long QT syndrome 5 </a>
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<abbr class="mim-tip-hint" title="Autosomal dominant">AD</abbr>
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<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
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<a href="/entry/613695"> 613695 </a>
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<a href="/entry/176261"> KCNE1 </a>
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<a href="/entry/176261"> 176261 </a>
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<p>A number sign (#) is used with this entry because of evidence that long QT syndrome-13 (LQT13) is caused by heterozygous mutation in the KCNJ5 gene (<a href="/entry/600734">600734</a>) on chromosome 11q24.</p>
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<p>Congenital long QT syndrome is electrocardiographically characterized by a prolonged QT interval and polymorphic ventricular arrhythmias (torsade de pointes). These cardiac arrhythmias may result in recurrent syncope, seizure, or sudden death (<a href="#1" class="mim-tip-reference" title="Jongbloed, R. J. E., Wilde, A. A. M., Geelen, J. L. M. C., Doevendans, P., Schaap, C., Van Langen, I., van Tintelen, J. P., Cobben, J. M., Beaufort-Krol, G. C. M., Geraedts, J. P. M., Smeets, H. J. M. &lt;strong&gt;Novel KCNQ1 and HERG missense mutations in Dutch long-QT families.&lt;/strong&gt; Hum. Mutat. 13: 301-310, 1999.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10220144/&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;10220144&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/(SICI)1098-1004(1999)13:4&lt;301::AID-HUMU7&gt;3.0.CO;2-V&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="10220144">Jongbloed et al., 1999</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=10220144" 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 discussion of genetic heterogeneity of long QT syndrome, see LQT1 (<a href="/entry/192500">192500</a>).</p>
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<p><a href="#4" class="mim-tip-reference" title="Yang, Y., Yang, Y., Liang, B., Liu, J., Li, J., Grunnet, M., Olesen, S.-P., Rasmussen, H. B., Ellinor, P. T., Gao, L., Lin, X., Li, L., and 9 others. &lt;strong&gt;Identification of a Kir3.4 mutation in congenital long QT syndrome.&lt;/strong&gt; Am. J. Hum. Genet. 86: 872-880, 2010.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/20560207/&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;20560207&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=20560207[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/j.ajhg.2010.04.017&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="20560207">Yang et al. (2010)</a> studied a large 4-generation Chinese family segregating autosomal dominant long QT syndrome (LQTS). The proband was a 62-year-old woman who had a 40-year history of syncopal episodes. Comprehensive clinical evaluation included an echocardiogram that showed no structural or functional cardiac abnormalities, but an electrocardiogram (ECG) that revealed a markedly prolonged QT interval (corrected QT = 520 ms). Subsequent evaluation of 49 family members identified 9 patients with LQTS characterized by similar clinical features. The proband developed persistent atrial fibrillation, which was also observed in 3 affected relatives. The proband had a younger brother who had a series of seizures and syncopal episodes after birth and died suddenly at 7 days of life. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=20560207" 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="Wang, F., Liu, J., Hong, L., Liang, B., Graff, C., Yang, Y., Christiansen, M., Olesen, S.-P., Zhang, L., Kanters, J. K. &lt;strong&gt;The phenotype characteristics of type 13 long QT syndrome with mutation in KCNJ5 (Kir3.4-G387R).&lt;/strong&gt; Heart Rhythm 10: 1500-1506, 2013.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/23872692/&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;23872692&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/j.hrthm.2013.07.022&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="23872692">Wang et al. (2013)</a> reexamined 9 mutation-positive members of the large 4-generation Han Chinese family originally reported by <a href="#4" class="mim-tip-reference" title="Yang, Y., Yang, Y., Liang, B., Liu, J., Li, J., Grunnet, M., Olesen, S.-P., Rasmussen, H. B., Ellinor, P. T., Gao, L., Lin, X., Li, L., and 9 others. &lt;strong&gt;Identification of a Kir3.4 mutation in congenital long QT syndrome.&lt;/strong&gt; Am. J. Hum. Genet. 86: 872-880, 2010.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/20560207/&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;20560207&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=20560207[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/j.ajhg.2010.04.017&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="20560207">Yang et al. (2010)</a>. Recurrent syncope was present in 5 patients, and 3 had symptoms of heart failure, believed to be secondary to coronary artery disease, atrioventricular block, and pulmonary embolism, respectively. Seven patients had hypertension, and 3 had atrial fibrillation and/or atrial tachycardia. <a href="#3" class="mim-tip-reference" title="Wang, F., Liu, J., Hong, L., Liang, B., Graff, C., Yang, Y., Christiansen, M., Olesen, S.-P., Zhang, L., Kanters, J. K. &lt;strong&gt;The phenotype characteristics of type 13 long QT syndrome with mutation in KCNJ5 (Kir3.4-G387R).&lt;/strong&gt; Heart Rhythm 10: 1500-1506, 2013.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/23872692/&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;23872692&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/j.hrthm.2013.07.022&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="23872692">Wang et al. (2013)</a> noted that mutation-related primary aldosteronism was excluded based on negative results of aldosterone/renin ratio and 24-hour urine aldosterone tests. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=20560207+23872692" 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="Kokunai, Y., Nakata, T., Furuta, M., Sakata, S., Kimura, H., Aiba, T., Yoshinaga, M., Osaki, Y., Nakamori, M., Itoh, H., Sato, T., Kubota, T., Kadota, K., Shindo, K., Mochizuki, H., Shimizu, W., Horie, M., Okamura, Y., Ohno, K., Takahashi, M. P. &lt;strong&gt;A Kir3.4 mutation causes Andersen-Tawil syndrome by an inhibitory effect on Kir2.1.&lt;/strong&gt; Neurology 82: 1058-1064, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/24574546/&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;24574546&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1212/WNL.0000000000000239&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="24574546">Kokunai et al. (2014)</a> reported a 35-year-old man who developed periodic muscle paralysis associated with reduced serum potassium concentrations beginning at age 31 years. He had no cardiac symptoms, but EKG showed possible sinus arrest during the attacks and prominent U waves at normal potassium concentrations. Although <a href="#2" class="mim-tip-reference" title="Kokunai, Y., Nakata, T., Furuta, M., Sakata, S., Kimura, H., Aiba, T., Yoshinaga, M., Osaki, Y., Nakamori, M., Itoh, H., Sato, T., Kubota, T., Kadota, K., Shindo, K., Mochizuki, H., Shimizu, W., Horie, M., Okamura, Y., Ohno, K., Takahashi, M. P. &lt;strong&gt;A Kir3.4 mutation causes Andersen-Tawil syndrome by an inhibitory effect on Kir2.1.&lt;/strong&gt; Neurology 82: 1058-1064, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/24574546/&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;24574546&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1212/WNL.0000000000000239&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="24574546">Kokunai et al. (2014)</a> suggested that the phenotype resembled Andersen-Tawil syndrome (LQT7; <a href="/entry/170390">170390</a>), the patient did not have dysmorphic features. There was a strong family history of significant cardiac arrhythmia, but neither detailed clinical features nor DNA from family members was available. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=24574546" 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>
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<p>In a large, 4-generation Chinese family segregating autosomal dominant long QT syndrome, in which affected individuals were negative for mutation in 12 known LQTS genes, <a href="#4" class="mim-tip-reference" title="Yang, Y., Yang, Y., Liang, B., Liu, J., Li, J., Grunnet, M., Olesen, S.-P., Rasmussen, H. B., Ellinor, P. T., Gao, L., Lin, X., Li, L., and 9 others. &lt;strong&gt;Identification of a Kir3.4 mutation in congenital long QT syndrome.&lt;/strong&gt; Am. J. Hum. Genet. 86: 872-880, 2010.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/20560207/&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;20560207&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=20560207[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/j.ajhg.2010.04.017&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="20560207">Yang et al. (2010)</a> performed genomewide linkage analysis and obtained a maximum lod score of 5.12 (theta = 0.00) at D11S4123 on chromosome 11q24.3. Haplotype analysis of family members revealed a 4.78-cM shared region on 11q23.3-q23.4, flanked by markers D11S4151 and D11S4123 and containing 15 defined genes. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=20560207" 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>
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<p>In a large, 4-generation Chinese family with autosomal dominant long QT syndrome mapping to chromosome 11q23.3-q23.4, <a href="#4" class="mim-tip-reference" title="Yang, Y., Yang, Y., Liang, B., Liu, J., Li, J., Grunnet, M., Olesen, S.-P., Rasmussen, H. B., Ellinor, P. T., Gao, L., Lin, X., Li, L., and 9 others. &lt;strong&gt;Identification of a Kir3.4 mutation in congenital long QT syndrome.&lt;/strong&gt; Am. J. Hum. Genet. 86: 872-880, 2010.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/20560207/&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;20560207&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=20560207[PMID]&amp;report=imagesdocsum&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;name&#x27;: &#x27;PubMed Image&#x27;, &#x27;domain&#x27;: &#x27;ncbi.nlm.nih.gov&#x27;})&quot;&gt;images&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/j.ajhg.2010.04.017&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="20560207">Yang et al. (2010)</a> sequenced the candidate gene KCNJ5 and identified heterozygosity for a missense mutation (G387R; <a href="/entry/600734#0001">600734.0001</a>) in affected individuals. The mutation, which was not found in 528 ethnically matched controls, was also detected in 2 asymptomatic family members, indicating incomplete penetrance and a need for long-term monitoring of carriers. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=20560207" 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="Kokunai, Y., Nakata, T., Furuta, M., Sakata, S., Kimura, H., Aiba, T., Yoshinaga, M., Osaki, Y., Nakamori, M., Itoh, H., Sato, T., Kubota, T., Kadota, K., Shindo, K., Mochizuki, H., Shimizu, W., Horie, M., Okamura, Y., Ohno, K., Takahashi, M. P. &lt;strong&gt;A Kir3.4 mutation causes Andersen-Tawil syndrome by an inhibitory effect on Kir2.1.&lt;/strong&gt; Neurology 82: 1058-1064, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/24574546/&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;24574546&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1212/WNL.0000000000000239&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="24574546">Kokunai et al. (2014)</a> identified heterozygosity for the G387R mutation in the KCNJ5 gene in a 35-year-old man with hypokalemic periodic paralysis and prominent U waves. The mutation was found by exome capture resequencing analysis of 162 genes encoding ion channels. In vitro functional expression studies in Xenopus oocytes showed that coexpression of KCNJ2 (<a href="/entry/600681">600681</a>) with mutant KCNJ5 significantly reduced the inwardly rectifying potassium current compared to that observed with coexpression of KCNJ2 with wildtype KCNJ5. <a href="#2" class="mim-tip-reference" title="Kokunai, Y., Nakata, T., Furuta, M., Sakata, S., Kimura, H., Aiba, T., Yoshinaga, M., Osaki, Y., Nakamori, M., Itoh, H., Sato, T., Kubota, T., Kadota, K., Shindo, K., Mochizuki, H., Shimizu, W., Horie, M., Okamura, Y., Ohno, K., Takahashi, M. P. &lt;strong&gt;A Kir3.4 mutation causes Andersen-Tawil syndrome by an inhibitory effect on Kir2.1.&lt;/strong&gt; Neurology 82: 1058-1064, 2014.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/24574546/&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;24574546&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1212/WNL.0000000000000239&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="24574546">Kokunai et al. (2014)</a> concluded that the reduction in this current caused by loss of function of KCNJ2 is the underlying cause of periodic paralysis and cardiac conduction abnormalities in this patient. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=24574546" 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>
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<strong>REFERENCES</strong>
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<a id="Jongbloed1999" class="mim-anchor"></a>
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Jongbloed, R. J. E., Wilde, A. A. M., Geelen, J. L. M. C., Doevendans, P., Schaap, C., Van Langen, I., van Tintelen, J. P., Cobben, J. M., Beaufort-Krol, G. C. M., Geraedts, J. P. M., Smeets, H. J. M.
<strong>Novel KCNQ1 and HERG missense mutations in Dutch long-QT families.</strong>
Hum. Mutat. 13: 301-310, 1999.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/10220144/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">10220144</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=10220144" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1002/(SICI)1098-1004(1999)13:4&lt;301::AID-HUMU7&gt;3.0.CO;2-V" target="_blank">Full Text</a>]
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<a id="Kokunai2014" class="mim-anchor"></a>
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Kokunai, Y., Nakata, T., Furuta, M., Sakata, S., Kimura, H., Aiba, T., Yoshinaga, M., Osaki, Y., Nakamori, M., Itoh, H., Sato, T., Kubota, T., Kadota, K., Shindo, K., Mochizuki, H., Shimizu, W., Horie, M., Okamura, Y., Ohno, K., Takahashi, M. P.
<strong>A Kir3.4 mutation causes Andersen-Tawil syndrome by an inhibitory effect on Kir2.1.</strong>
Neurology 82: 1058-1064, 2014.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/24574546/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">24574546</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=24574546" 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.0000000000000239" target="_blank">Full Text</a>]
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Wang, F., Liu, J., Hong, L., Liang, B., Graff, C., Yang, Y., Christiansen, M., Olesen, S.-P., Zhang, L., Kanters, J. K.
<strong>The phenotype characteristics of type 13 long QT syndrome with mutation in KCNJ5 (Kir3.4-G387R).</strong>
Heart Rhythm 10: 1500-1506, 2013.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/23872692/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">23872692</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=23872692" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1016/j.hrthm.2013.07.022" target="_blank">Full Text</a>]
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<a id="Yang2010" class="mim-anchor"></a>
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Yang, Y., Yang, Y., Liang, B., Liu, J., Li, J., Grunnet, M., Olesen, S.-P., Rasmussen, H. B., Ellinor, P. T., Gao, L., Lin, X., Li, L., and 9 others.
<strong>Identification of a Kir3.4 mutation in congenital long QT syndrome.</strong>
Am. J. Hum. Genet. 86: 872-880, 2010.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/20560207/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">20560207</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=20560207[PMID]&report=imagesdocsum" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Image', 'domain': 'ncbi.nlm.nih.gov'})">images</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=20560207" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1016/j.ajhg.2010.04.017" target="_blank">Full Text</a>]
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Cassandra L. Kniffin - updated : 4/21/2014
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Marla J. F. O&#x27;Neill : 7/15/2010
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carol : 09/18/2015<br>alopez : 6/12/2014<br>mcolton : 6/9/2014<br>carol : 4/23/2014<br>mcolton : 4/22/2014<br>ckniffin : 4/21/2014<br>carol : 1/14/2011<br>terry : 12/8/2010<br>carol : 7/15/2010
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<strong>#</strong> 613485
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LONG QT SYNDROME 13; LQT13
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<strong>ORPHA:</strong> 101016, 768; &nbsp;
<strong>DO:</strong> 0110654; &nbsp;
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<strong>Phenotype-Gene Relationships</strong>
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Location
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Phenotype
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Phenotype <br /> MIM number
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Inheritance
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Phenotype <br /> mapping key
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Gene/Locus
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Gene/Locus <br /> MIM number
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11q24.3
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Long QT syndrome 13
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613485
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Autosomal dominant
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3
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KCNJ5
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600734
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<strong>TEXT</strong>
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<p>A number sign (#) is used with this entry because of evidence that long QT syndrome-13 (LQT13) is caused by heterozygous mutation in the KCNJ5 gene (600734) on chromosome 11q24.</p>
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<strong>Description</strong>
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<p>Congenital long QT syndrome is electrocardiographically characterized by a prolonged QT interval and polymorphic ventricular arrhythmias (torsade de pointes). These cardiac arrhythmias may result in recurrent syncope, seizure, or sudden death (Jongbloed et al., 1999). </p><p>For a discussion of genetic heterogeneity of long QT syndrome, see LQT1 (192500).</p>
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<strong>Clinical Features</strong>
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<p>Yang et al. (2010) studied a large 4-generation Chinese family segregating autosomal dominant long QT syndrome (LQTS). The proband was a 62-year-old woman who had a 40-year history of syncopal episodes. Comprehensive clinical evaluation included an echocardiogram that showed no structural or functional cardiac abnormalities, but an electrocardiogram (ECG) that revealed a markedly prolonged QT interval (corrected QT = 520 ms). Subsequent evaluation of 49 family members identified 9 patients with LQTS characterized by similar clinical features. The proband developed persistent atrial fibrillation, which was also observed in 3 affected relatives. The proband had a younger brother who had a series of seizures and syncopal episodes after birth and died suddenly at 7 days of life. </p><p>Wang et al. (2013) reexamined 9 mutation-positive members of the large 4-generation Han Chinese family originally reported by Yang et al. (2010). Recurrent syncope was present in 5 patients, and 3 had symptoms of heart failure, believed to be secondary to coronary artery disease, atrioventricular block, and pulmonary embolism, respectively. Seven patients had hypertension, and 3 had atrial fibrillation and/or atrial tachycardia. Wang et al. (2013) noted that mutation-related primary aldosteronism was excluded based on negative results of aldosterone/renin ratio and 24-hour urine aldosterone tests. </p><p><strong><em>Clinical Variability</em></strong></p><p>
Kokunai et al. (2014) reported a 35-year-old man who developed periodic muscle paralysis associated with reduced serum potassium concentrations beginning at age 31 years. He had no cardiac symptoms, but EKG showed possible sinus arrest during the attacks and prominent U waves at normal potassium concentrations. Although Kokunai et al. (2014) suggested that the phenotype resembled Andersen-Tawil syndrome (LQT7; 170390), the patient did not have dysmorphic features. There was a strong family history of significant cardiac arrhythmia, but neither detailed clinical features nor DNA from family members was available. </p>
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<strong>Mapping</strong>
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<p>In a large, 4-generation Chinese family segregating autosomal dominant long QT syndrome, in which affected individuals were negative for mutation in 12 known LQTS genes, Yang et al. (2010) performed genomewide linkage analysis and obtained a maximum lod score of 5.12 (theta = 0.00) at D11S4123 on chromosome 11q24.3. Haplotype analysis of family members revealed a 4.78-cM shared region on 11q23.3-q23.4, flanked by markers D11S4151 and D11S4123 and containing 15 defined genes. </p>
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<strong>Molecular Genetics</strong>
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<p>In a large, 4-generation Chinese family with autosomal dominant long QT syndrome mapping to chromosome 11q23.3-q23.4, Yang et al. (2010) sequenced the candidate gene KCNJ5 and identified heterozygosity for a missense mutation (G387R; 600734.0001) in affected individuals. The mutation, which was not found in 528 ethnically matched controls, was also detected in 2 asymptomatic family members, indicating incomplete penetrance and a need for long-term monitoring of carriers. </p><p>Kokunai et al. (2014) identified heterozygosity for the G387R mutation in the KCNJ5 gene in a 35-year-old man with hypokalemic periodic paralysis and prominent U waves. The mutation was found by exome capture resequencing analysis of 162 genes encoding ion channels. In vitro functional expression studies in Xenopus oocytes showed that coexpression of KCNJ2 (600681) with mutant KCNJ5 significantly reduced the inwardly rectifying potassium current compared to that observed with coexpression of KCNJ2 with wildtype KCNJ5. Kokunai et al. (2014) concluded that the reduction in this current caused by loss of function of KCNJ2 is the underlying cause of periodic paralysis and cardiac conduction abnormalities in this patient. </p>
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<span class="mim-font">
<strong>REFERENCES</strong>
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<p />
</div>
<div>
<ol>
<li>
<p class="mim-text-font">
Jongbloed, R. J. E., Wilde, A. A. M., Geelen, J. L. M. C., Doevendans, P., Schaap, C., Van Langen, I., van Tintelen, J. P., Cobben, J. M., Beaufort-Krol, G. C. M., Geraedts, J. P. M., Smeets, H. J. M.
<strong>Novel KCNQ1 and HERG missense mutations in Dutch long-QT families.</strong>
Hum. Mutat. 13: 301-310, 1999.
[PubMed: 10220144]
[Full Text: https://doi.org/10.1002/(SICI)1098-1004(1999)13:4&lt;301::AID-HUMU7&gt;3.0.CO;2-V]
</p>
</li>
<li>
<p class="mim-text-font">
Kokunai, Y., Nakata, T., Furuta, M., Sakata, S., Kimura, H., Aiba, T., Yoshinaga, M., Osaki, Y., Nakamori, M., Itoh, H., Sato, T., Kubota, T., Kadota, K., Shindo, K., Mochizuki, H., Shimizu, W., Horie, M., Okamura, Y., Ohno, K., Takahashi, M. P.
<strong>A Kir3.4 mutation causes Andersen-Tawil syndrome by an inhibitory effect on Kir2.1.</strong>
Neurology 82: 1058-1064, 2014.
[PubMed: 24574546]
[Full Text: https://doi.org/10.1212/WNL.0000000000000239]
</p>
</li>
<li>
<p class="mim-text-font">
Wang, F., Liu, J., Hong, L., Liang, B., Graff, C., Yang, Y., Christiansen, M., Olesen, S.-P., Zhang, L., Kanters, J. K.
<strong>The phenotype characteristics of type 13 long QT syndrome with mutation in KCNJ5 (Kir3.4-G387R).</strong>
Heart Rhythm 10: 1500-1506, 2013.
[PubMed: 23872692]
[Full Text: https://doi.org/10.1016/j.hrthm.2013.07.022]
</p>
</li>
<li>
<p class="mim-text-font">
Yang, Y., Yang, Y., Liang, B., Liu, J., Li, J., Grunnet, M., Olesen, S.-P., Rasmussen, H. B., Ellinor, P. T., Gao, L., Lin, X., Li, L., and 9 others.
<strong>Identification of a Kir3.4 mutation in congenital long QT syndrome.</strong>
Am. J. Hum. Genet. 86: 872-880, 2010.
[PubMed: 20560207]
[Full Text: https://doi.org/10.1016/j.ajhg.2010.04.017]
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<span class="mim-text-font">
Marla J. F. O&#x27;Neill - updated : 6/9/2014<br>Cassandra L. Kniffin - updated : 4/21/2014
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Marla J. F. O&#x27;Neill : 7/15/2010
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