nih-gov/www.ncbi.nlm.nih.gov/omim/619806

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<title>
Entry
- #619806 - SPINOCEREBELLAR ATAXIA 49; SCA49
- OMIM
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<span class="h4">#619806</span>
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<strong>Table of Contents</strong>
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<a href="#title"><strong>Title</strong></a>
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<a href="#phenotypeMap"><strong>Phenotype-Gene Relationships</strong></a>
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<a href="/clinicalSynopsis/619806"><strong>Clinical Synopsis</strong></a>
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<a href="/phenotypicSeries/PS164400"> <strong>Phenotypic Series</strong> </a>
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<a href="#text"><strong>Text</strong></a>
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<a href="#description">Description</a>
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<a href="#clinicalFeatures">Clinical Features</a>
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<li role="presentation" style="margin-left: 1em">
<a href="#inheritance">Inheritance</a>
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<a href="#molecularGenetics">Molecular Genetics</a>
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</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=(SPINOCEREBELLAR ATAXIA) OR (SAMD9L)" 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=31591&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://www.ncbi.nlm.nih.gov/gtr/all/tests/?term=619806[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=631106" 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>
</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> 631106<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>
619806
</span>
</span>
</div>
</div>
<div>
<a id="preferredTitle" class="mim-anchor"></a>
<h3>
<span class="mim-font">
SPINOCEREBELLAR ATAXIA 49; SCA49
</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/7/414?start=-3&limit=10&highlight=414">
7q21.2
</a>
</span>
</td>
<td>
<span class="mim-font">
?Spinocerebellar ataxia 49
<span class="mim-tip-hint" title="A question mark (?) indicates that the relationship between the phenotype and gene is provisional">
<span class="glyphicon glyphicon-question-sign" aria-hidden="true"></span>
</span>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/619806"> 619806 </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">
SAMD9L
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611170"> 611170 </a>
</span>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div>
<div class="btn-group ">
<a href="/clinicalSynopsis/619806" 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/PS164400" 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/619806" target="_blank" onclick="gtag('event', 'mim_graph', {'destination': 'Linear'})"> Linear </a></li>
<li><a href="/graph/radial/619806" 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> HEAD & NECK </strong>
</span>
</div>
<div style="margin-left: 2em;">
<div>
<div>
<span class="h5 mim-font">
<em> Eyes </em>
</span>
</div>
<div style="margin-left: 2em;">
<span class="mim-font">
- Gaze-evoked nystagmus, vertical and horizontal <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C5678393&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C5678393</a>]</span><br /> -
Diplopia <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/24982008" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">24982008</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/H53.2" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">H53.2</a>]</span> <span class="mim-feature-ids hidden">[ICD9CM: <a href="https://purl.bioontology.org/ontology/ICD9CM/368.2" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">368.2</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0012569&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0012569</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0000651" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0000651</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0000651" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0000651</a>]</span><br /> -
Oscillopsia <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/246650003" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">246650003</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0422980&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0422980</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0034773" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0034773</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0034773" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0034773</a>]</span><br /> -
Strabismus <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/22066006" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">22066006</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/H50.9" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">H50.9</a>, <a href="https://purl.bioontology.org/ontology/ICD10CM/H50.40" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">H50.40</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0038379&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0038379</a>, <a href="https://bioportal.bioontology.org/search?q=C2020541&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C2020541</a>, <a href="https://bioportal.bioontology.org/search?q=C1423541&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C1423541</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0000486" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0000486</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0000486" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0000486</a>]</span><br />
</span>
</div>
</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">
- Spinocerebellar ataxia <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/129609000" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">129609000</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0087012&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0087012</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0007263" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0007263</a>]</span><br /> -
Unsteady gait <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/22631008" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">22631008</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0231686&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0231686</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002317" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002317</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002317" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002317</a>]</span><br /> -
Hyperreflexia <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/86854008" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">86854008</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0151889&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0151889</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001347" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001347</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001347" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001347</a>]</span><br /> -
Gait ataxia <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/25136009" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">25136009</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/R26.0" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">R26.0</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0751837&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0751837</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002066" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002066</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002066" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002066</a>]</span><br /> -
Dysarthria <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/8011004" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">8011004</a>]</span> <span class="mim-feature-ids hidden">[ICD9CM: <a href="https://purl.bioontology.org/ontology/ICD9CM/438.13" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">438.13</a>, <a href="https://purl.bioontology.org/ontology/ICD9CM/784.51" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">784.51</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0013362&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0013362</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001260" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001260</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001260" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001260</a>]</span><br /> -
Dysmetria <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/32566006" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">32566006</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0234162&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0234162</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001310" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001310</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001310" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001310</a>]</span><br /> -
Dysdiadochokinesis <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/23133003" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">23133003</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0234979&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0234979</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002075" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002075</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002075" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002075</a>]</span><br /> -
Extensor plantar responses <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/246586009" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">246586009</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/366575004" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">366575004</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0034935&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0034935</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003487" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003487</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003487" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003487</a>]</span><br /> -
Pyramidal signs <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/14648003" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">14648003</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0234132&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0234132</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0007256" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0007256</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0007256" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0007256</a>]</span><br /> -
Cerebellar atrophy seen on brain imaging <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C5194821&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C5194821</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001272" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001272</a>]</span><br /> -
Diffuse cerebral demyelination <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C5678392&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C5678392</a>]</span><br />
</span>
</div>
</div>
<div>
<div>
<span class="h5 mim-font">
<em> Peripheral Nervous System </em>
</span>
</div>
<div style="margin-left: 2em;">
<span class="mim-font">
- Axonal sensory polyneuropathy (in some patients) <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0857382&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0857382</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">
- Variable age at onset (range childhood to adult)<br /> -
Slowly progressive <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C1854494&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C1854494</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003677" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003677</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003677" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003677</a>]</span><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 /> -
One Spanish family has been reported (last curated March 2022)<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 sterile alpha motif domain-containing protein 9-like gene (SAMD9L, <a href="/entry/611170#0007">611170.0007</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>
Spinocerebellar ataxia
- <a href="/phenotypicSeries/PS164400">PS164400</a>
- 49 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/1/49?start=-3&limit=10&highlight=49"> 1p36.33 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607454"> Spinocerebellar ataxia 21 </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/607454"> 607454 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616101"> TMEM240 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616101"> 616101 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/1/378?start=-3&limit=10&highlight=378"> 1p35.2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/617931"> Spinocerebellar ataxia 47 </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/617931"> 617931 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607204"> PUM1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607204"> 607204 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/1/653?start=-3&limit=10&highlight=653"> 1p32.2-p32.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/615945"> Spinocerebellar ataxia 37 </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/615945"> 615945 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/603448"> DAB1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/603448"> 603448 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/1/919?start=-3&limit=10&highlight=919"> 1p13.2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607346"> Spinocerebellar ataxia 19 </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/607346"> 607346 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/605411"> KCND3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/605411"> 605411 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/2/269?start=-3&limit=10&highlight=269"> 2p16.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/608703"> Spinocerebellar ataxia 25 </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/608703"> 608703 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/610316"> PNPT1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/610316"> 610316 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/3/17?start=-3&limit=10&highlight=17"> 3p26.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/606658"> Spinocerebellar ataxia 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/606658"> 606658 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/147265"> ITPR1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/147265"> 147265 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/3/17?start=-3&limit=10&highlight=17"> 3p26.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/117360"> Spinocerebellar ataxia 29, congenital nonprogressive </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/117360"> 117360 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/147265"> ITPR1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/147265"> 147265 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/3/436?start=-3&limit=10&highlight=436"> 3p14.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/164500"> Spinocerebellar ataxia 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="3 - The molecular basis of the disorder is known"> 3 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/164500"> 164500 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607640"> ATXN7 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607640"> 607640 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/3/798?start=-3&limit=10&highlight=798"> 3q25.2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/617018"> ?Spinocerebellar ataxia 43 </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/617018"> 617018 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/120520"> MME </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/120520"> 120520 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/4/531?start=-3&limit=10&highlight=531"> 4q27 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616410"> ?Spinocerebellar ataxia 41 </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/616410"> 616410 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602345"> TRPC3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602345"> 602345 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/4/691?start=-3&limit=10&highlight=691"> 4q34.3-q35.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613371"> ?Spinocerebellar ataxia 30 </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/613371"> 613371 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613371"> SCA30 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613371"> 613371 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/5/633?start=-3&limit=10&highlight=633"> 5q32 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604326"> Spinocerebellar ataxia 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/604326"> 604326 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604325"> PPP2R2B </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604325"> 604325 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/5/687?start=-3&limit=10&highlight=687"> 5q33.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/617769"> Spinocerebellar ataxia 45 </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/617769"> 617769 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604269"> FAT2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604269"> 604269 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/6/90?start=-3&limit=10&highlight=90"> 6p22.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/164400"> Spinocerebellar ataxia 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/164400"> 164400 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601556"> ATXN1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601556"> 601556 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/6/600?start=-3&limit=10&highlight=600"> 6p12.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/615957"> Spinocerebellar ataxia 38 </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/615957"> 615957 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611805"> ELOVL5 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611805"> 611805 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/6/667?start=-3&limit=10&highlight=667"> 6q14.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/133190"> Spinocerebellar ataxia 34 </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/133190"> 133190 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/605512"> ELOVL4 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/605512"> 605512 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/6/928?start=-3&limit=10&highlight=928"> 6q24.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/617691"> Spinocerebellar ataxia 44 </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/617691"> 617691 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604473"> GRM1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604473"> 604473 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/6/1041?start=-3&limit=10&highlight=1041"> 6q27 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607136"> Spinocerebellar ataxia 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/607136"> 607136 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600075"> TBP </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600075"> 600075 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/7/414?start=-3&limit=10&highlight=414"> 7q21.2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/619806"> ?Spinocerebellar ataxia 49 </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/619806"> 619806 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611170"> SAMD9L </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611170"> 611170 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/7/454?start=-3&limit=10&highlight=454"> 7q22-q32 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607458"> Spinocerebellar ataxia 18 </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/607458"> 607458 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607458"> SCA18 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607458"> 607458 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/7/642?start=-3&limit=10&highlight=642"> 7q32-q33 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613909"> Spinocerebellar ataxia 32 </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/613909"> 613909 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613909"> SCA32 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613909"> 613909 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/11/380?start=-3&limit=10&highlight=380"> 11q12 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/608687"> Spinocerebellar ataxia 20 </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="4 - A contiguous gene duplication or deletion syndrome in which multiple genes are involved"> 4 </abbr>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/608687"> 608687 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/608687"> SCA20 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/608687"> 608687 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/11/646?start=-3&limit=10&highlight=646"> 11q13.2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600224"> Spinocerebellar ataxia 5 </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/600224"> 600224 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604985"> SPTBN2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604985"> 604985 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/12/813?start=-3&limit=10&highlight=813"> 12q24.12 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/183090"> Spinocerebellar ataxia 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/183090"> 183090 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601517"> ATXN2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601517"> 601517 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/12/813?start=-3&limit=10&highlight=813"> 12q24.12 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/183090"> {Amyotrophic lateral sclerosis, susceptibility to, 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/183090"> 183090 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601517"> ATXN2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601517"> 601517 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/13/204?start=-3&limit=10&highlight=204"> 13q21 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/608768"> Spinocerebellar ataxia 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/608768"> 608768 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613289"> ATXN8 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613289"> 613289 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/13/213?start=-3&limit=10&highlight=213"> 13q21.33 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/608768"> Spinocerebellar ataxia 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/608768"> 608768 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/603680"> ATXN8OS </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/603680"> 603680 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/13/293?start=-3&limit=10&highlight=293"> 13q33.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/620174"> Spinocerebellar ataxia 27B, late-onset </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/620174"> 620174 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601515"> FGF14 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601515"> 601515 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/13/293?start=-3&limit=10&highlight=293"> 13q33.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/193003"> Spinocerebellar ataxia 27A </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/193003"> 193003 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601515"> FGF14 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601515"> 601515 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/14/460?start=-3&limit=10&highlight=460"> 14q32.11-q32.12 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616053"> ?Spinocerebellar ataxia 40 </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/616053"> 616053 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611204"> CCDC88C </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611204"> 611204 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/14/466?start=-3&limit=10&highlight=466"> 14q32.12 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/109150"> Machado-Joseph disease </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/109150"> 109150 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607047"> ATXN3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607047"> 607047 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/15/139?start=-3&limit=10&highlight=139"> 15q15.2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604432"> Spinocerebellar ataxia 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/604432"> 604432 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611695"> TTBK2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611695"> 611695 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/16/37?start=-3&limit=10&highlight=37"> 16p13.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/618093"> Spinocerebellar ataxia 48 </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/618093"> 618093 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607207"> STUB1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/607207"> 607207 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/16/510?start=-3&limit=10&highlight=510"> 16q21 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/117210"> Spinocerebellar ataxia 31 </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/117210"> 117210 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/612051"> BEAN1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/612051"> 612051 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/16/561?start=-3&limit=10&highlight=561"> 16q22.1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/620947"> Spinocerebellar ataxia 51 </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/620947"> 620947 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/609119"> THAP11 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/609119"> 609119 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/16/630?start=-3&limit=10&highlight=630"> 16q22.2-q22.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/600223"> Spinocerebellar ataxia 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/600223"> 600223 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/104155"> ZFHX3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/104155"> 104155 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/17/747?start=-3&limit=10&highlight=747"> 17q21.33 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616795"> Spinocerebellar ataxia 42 </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/616795"> 616795 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604065"> CACNA1G </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604065"> 604065 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/17/1021?start=-3&limit=10&highlight=1021"> 17q25.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/620158"> Spinocerebellar ataxia 50 </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/620158"> 620158 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602367"> NPTX1 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/602367"> 602367 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/18/63?start=-3&limit=10&highlight=63"> 18p11.21 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/610246"> Spinocerebellar ataxia 28 </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/610246"> 610246 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604581"> AFG3L2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/604581"> 604581 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/19/123?start=-3&limit=10&highlight=123"> 19p13.3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/609306"> ?Spinocerebellar ataxia 26 </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/609306"> 609306 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/130610"> EEF2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/130610"> 130610 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/19/355?start=-3&limit=10&highlight=355"> 19p13.13 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/183086"> Spinocerebellar ataxia 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/183086"> 183086 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601011"> CACNA1A </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/601011"> 601011 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/19/700?start=-3&limit=10&highlight=700"> 19q13.2 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/617770"> ?Spinocerebellar ataxia 46 </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/617770"> 617770 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/615698"> PLD3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/615698"> 615698 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/19/978?start=-3&limit=10&highlight=978"> 19q13.33 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/605259"> Spinocerebellar ataxia 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/605259"> 605259 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/176264"> KCNC3 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/176264"> 176264 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/19/1111?start=-3&limit=10&highlight=1111"> 19q13.42 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/605361"> Spinocerebellar ataxia 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/605361"> 605361 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/176980"> PRKCG </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/176980"> 176980 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/20/29?start=-3&limit=10&highlight=29"> 20p13 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/610245"> Spinocerebellar ataxia 23 </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/610245"> 610245 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/131340"> PDYN </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/131340"> 131340 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/20/32?start=-3&limit=10&highlight=32"> 20p13 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613908"> Spinocerebellar ataxia 35 </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/613908"> 613908 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613900"> TGM6 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/613900"> 613900 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/20/35?start=-3&limit=10&highlight=35"> 20p13 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/614153"> Spinocerebellar ataxia 36 </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/614153"> 614153 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/614154"> NOP56 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/614154"> 614154 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
<a href="/geneMap/22/380?start=-3&limit=10&highlight=380"> 22q13.31 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/603516"> Spinocerebellar ataxia 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/603516"> 603516 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611150"> ATXN10 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/611150"> 611150 </a>
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
Not Mapped
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/612876"> Spinocerebellar ataxia 9 </a>
</span>
</td>
<td>
<span class="mim-font">
</span>
</td>
<td>
<span class="mim-font">
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/612876"> 612876 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/612876"> SCA9 </a>
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/612876"> 612876 </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 spinocerebellar ataxia-49 (SCA49) is caused by heterozygous mutation in the SAMD9L gene (<a href="/entry/611170">611170</a>) on chromosome 7q21. One such family has been reported.</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>Spinocerebellar ataxia-49 (SCA49) is an autosomal dominant neurologic disorder characterized initially by gait abnormalities, gaze-evoked nystagmus, and hyperreflexia. The age at onset is highly variable, ranging from the second to seventh decades, even within the same family. The disorder is slowly progressive, and later features may include dysarthria, dysmetria, diplopia, pyramidal signs, and axonal peripheral neuropathy. Brain imaging shows cerebellar atrophy and myelination defects (<a href="#1" class="mim-tip-reference" title="Corral-Juan, M., Casquero, P., Giraldo-Restrepo, N., Laurie, S., Martinez-Pineiro, A., Mateo-Montero, R. C., Ispierto, L., Vilas, D., Tolosa, E., Volpini, V., Alvarez-Ramo, R., Sanchez, I., Matilla-Duenas, A. &lt;strong&gt;New spinocerebellar ataxia subtype caused by SAMD9L mutation triggering mitochondrial dysregulation (SCA49).&lt;/strong&gt; Brain Commun. 4: fcac030, 2022.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/35310830/&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;35310830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=35310830[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/10.1093/braincomms/fcac030&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="35310830">Corral-Juan et al., 2022</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=35310830" 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="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>
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<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="Corral-Juan, M., Casquero, P., Giraldo-Restrepo, N., Laurie, S., Martinez-Pineiro, A., Mateo-Montero, R. C., Ispierto, L., Vilas, D., Tolosa, E., Volpini, V., Alvarez-Ramo, R., Sanchez, I., Matilla-Duenas, A. &lt;strong&gt;New spinocerebellar ataxia subtype caused by SAMD9L mutation triggering mitochondrial dysregulation (SCA49).&lt;/strong&gt; Brain Commun. 4: fcac030, 2022.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/35310830/&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;35310830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=35310830[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/10.1093/braincomms/fcac030&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="35310830">Corral-Juan et al. (2022)</a> reported a large 5-generation Spanish family (M-SCA) from Menorca in which 11 individuals had spinocerebellar ataxia. Detailed clinical information was provided for 9 patients who were all adults at the time of report. The age at symptom onset was highly variable, ranging from 12 to 60 years. The presenting signs were unsteady gait, vertical and horizontal gaze-evoked nystagmus, and hyperreflexia. The disorder was slowly progressive with later onset of gait ataxia between 30 and 60 years of age. More variable features that developed as the disease progressed included dysarthria, dysmetria, diplopia, oscillopsia, and strabismus. Some patients showed dysdiadochokinesis and extensor plantar responses with pyramidal signs. One younger patient had ankle clonus and pes cavus. Five patients had a moderate axonal sensory polyneuropathy of the lower limbs which progressed to the upper limbs at later stages. Two patients became wheelchair-bound in their seventies. All 5 patients who underwent brain imaging studies showed cerebellar atrophy and diffuse cerebral demyelination. None of the patients had seizures, cognitive impairment, extrapyramidal signs, or hematologic abnormalities. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=35310830" 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 SCA49 in the family reported by <a href="#1" class="mim-tip-reference" title="Corral-Juan, M., Casquero, P., Giraldo-Restrepo, N., Laurie, S., Martinez-Pineiro, A., Mateo-Montero, R. C., Ispierto, L., Vilas, D., Tolosa, E., Volpini, V., Alvarez-Ramo, R., Sanchez, I., Matilla-Duenas, A. &lt;strong&gt;New spinocerebellar ataxia subtype caused by SAMD9L mutation triggering mitochondrial dysregulation (SCA49).&lt;/strong&gt; Brain Commun. 4: fcac030, 2022.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/35310830/&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;35310830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=35310830[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/10.1093/braincomms/fcac030&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="35310830">Corral-Juan et al. (2022)</a> was consistent with autosomal dominant inheritance. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=35310830" 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>
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<p>In 9 affected individuals from a multigenerational Spanish family (M-SCA) with SCA49, <a href="#1" class="mim-tip-reference" title="Corral-Juan, M., Casquero, P., Giraldo-Restrepo, N., Laurie, S., Martinez-Pineiro, A., Mateo-Montero, R. C., Ispierto, L., Vilas, D., Tolosa, E., Volpini, V., Alvarez-Ramo, R., Sanchez, I., Matilla-Duenas, A. &lt;strong&gt;New spinocerebellar ataxia subtype caused by SAMD9L mutation triggering mitochondrial dysregulation (SCA49).&lt;/strong&gt; Brain Commun. 4: fcac030, 2022.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/35310830/&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;35310830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=35310830[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/10.1093/braincomms/fcac030&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="35310830">Corral-Juan et al. (2022)</a> identified a heterozygous missense mutation in the SAMD9L gene (S626L; <a href="/entry/611170#0007">611170.0007</a>). The mutation, which was found by a combination of linkage analysis and whole-exome sequencing, segregated with the disorder in the family. Patient fibroblasts showed decreased levels of SAMD9L compared to controls. Further analysis of patient fibroblasts showed increased mitochondrial replication and increased ATP levels compared to controls, suggesting mitochondrial stress, although there were no mtDNA alterations. There was also evidence of dysregulation of the lysosomal/autophagy pathway with diffuse mitochondrial crests and mitophagy; fibroblasts had a dilated endoplasmic reticulum and increased numbers of lysosomes. The authors postulated that the mutation prevented proper protein folding, leading to abnormal mitochondrial clearance by mitophagy and compensatory mitochondrial biogenesis. The mechanism could be haploinsufficiency or a dominant-negative effect. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=35310830" 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><a href="#1" class="mim-tip-reference" title="Corral-Juan, M., Casquero, P., Giraldo-Restrepo, N., Laurie, S., Martinez-Pineiro, A., Mateo-Montero, R. C., Ispierto, L., Vilas, D., Tolosa, E., Volpini, V., Alvarez-Ramo, R., Sanchez, I., Matilla-Duenas, A. &lt;strong&gt;New spinocerebellar ataxia subtype caused by SAMD9L mutation triggering mitochondrial dysregulation (SCA49).&lt;/strong&gt; Brain Commun. 4: fcac030, 2022.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/35310830/&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;35310830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=35310830[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/10.1093/braincomms/fcac030&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="35310830">Corral-Juan et al. (2022)</a> found that zebrafish expressing the human SAMD9L S262L mutation (<a href="/entry/611170#0007">611170.0007</a>) had impaired locomotor activity and decreased head turning, indicating vestibular and sensory dysfunction, compared to controls. The protein showed mitochondrial localization in neurons of zebrafish larvae, including in the spinal cord, peripheral nerves, and hindbrain, where it located with ATP5B (<a href="/entry/102910">102910</a>). Mutant fish showed increased levels of the mitochondrial fusion protein DRP1 (<a href="/entry/603850">603850</a>) compared to controls, suggesting mitochondrial biogenesis. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=35310830" 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="1" class="mim-anchor"></a>
<a id="Corral-Juan2022" class="mim-anchor"></a>
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Corral-Juan, M., Casquero, P., Giraldo-Restrepo, N., Laurie, S., Martinez-Pineiro, A., Mateo-Montero, R. C., Ispierto, L., Vilas, D., Tolosa, E., Volpini, V., Alvarez-Ramo, R., Sanchez, I., Matilla-Duenas, A.
<strong>New spinocerebellar ataxia subtype caused by SAMD9L mutation triggering mitochondrial dysregulation (SCA49).</strong>
Brain Commun. 4: fcac030, 2022.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/35310830/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">35310830</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=35310830[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=35310830" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1093/braincomms/fcac030" target="_blank">Full Text</a>]
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Creation Date:
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Cassandra L. Kniffin : 03/31/2022
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alopez : 07/27/2022
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carol : 04/08/2022<br>carol : 04/07/2022<br>ckniffin : 03/31/2022
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<strong>#</strong> 619806
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SPINOCEREBELLAR ATAXIA 49; SCA49
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<strong>ORPHA:</strong> 631106; &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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7q21.2
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?Spinocerebellar ataxia 49
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619806
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Autosomal dominant
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3
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SAMD9L
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611170
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<strong>TEXT</strong>
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<p>A number sign (#) is used with this entry because of evidence that spinocerebellar ataxia-49 (SCA49) is caused by heterozygous mutation in the SAMD9L gene (611170) on chromosome 7q21. One such family has been reported.</p>
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<strong>Description</strong>
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<p>Spinocerebellar ataxia-49 (SCA49) is an autosomal dominant neurologic disorder characterized initially by gait abnormalities, gaze-evoked nystagmus, and hyperreflexia. The age at onset is highly variable, ranging from the second to seventh decades, even within the same family. The disorder is slowly progressive, and later features may include dysarthria, dysmetria, diplopia, pyramidal signs, and axonal peripheral neuropathy. Brain imaging shows cerebellar atrophy and myelination defects (Corral-Juan et al., 2022). </p>
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<strong>Clinical Features</strong>
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<p>Corral-Juan et al. (2022) reported a large 5-generation Spanish family (M-SCA) from Menorca in which 11 individuals had spinocerebellar ataxia. Detailed clinical information was provided for 9 patients who were all adults at the time of report. The age at symptom onset was highly variable, ranging from 12 to 60 years. The presenting signs were unsteady gait, vertical and horizontal gaze-evoked nystagmus, and hyperreflexia. The disorder was slowly progressive with later onset of gait ataxia between 30 and 60 years of age. More variable features that developed as the disease progressed included dysarthria, dysmetria, diplopia, oscillopsia, and strabismus. Some patients showed dysdiadochokinesis and extensor plantar responses with pyramidal signs. One younger patient had ankle clonus and pes cavus. Five patients had a moderate axonal sensory polyneuropathy of the lower limbs which progressed to the upper limbs at later stages. Two patients became wheelchair-bound in their seventies. All 5 patients who underwent brain imaging studies showed cerebellar atrophy and diffuse cerebral demyelination. None of the patients had seizures, cognitive impairment, extrapyramidal signs, or hematologic abnormalities. </p>
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<strong>Inheritance</strong>
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<p>The transmission pattern of SCA49 in the family reported by Corral-Juan et al. (2022) was consistent with autosomal dominant inheritance. </p>
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<span class="mim-font">
<strong>Molecular Genetics</strong>
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<span class="mim-text-font">
<p>In 9 affected individuals from a multigenerational Spanish family (M-SCA) with SCA49, Corral-Juan et al. (2022) identified a heterozygous missense mutation in the SAMD9L gene (S626L; 611170.0007). The mutation, which was found by a combination of linkage analysis and whole-exome sequencing, segregated with the disorder in the family. Patient fibroblasts showed decreased levels of SAMD9L compared to controls. Further analysis of patient fibroblasts showed increased mitochondrial replication and increased ATP levels compared to controls, suggesting mitochondrial stress, although there were no mtDNA alterations. There was also evidence of dysregulation of the lysosomal/autophagy pathway with diffuse mitochondrial crests and mitophagy; fibroblasts had a dilated endoplasmic reticulum and increased numbers of lysosomes. The authors postulated that the mutation prevented proper protein folding, leading to abnormal mitochondrial clearance by mitophagy and compensatory mitochondrial biogenesis. The mechanism could be haploinsufficiency or a dominant-negative effect. </p>
</span>
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<br />
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<h4>
<span class="mim-font">
<strong>Animal Model</strong>
</span>
</h4>
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<span class="mim-text-font">
<p>Corral-Juan et al. (2022) found that zebrafish expressing the human SAMD9L S262L mutation (611170.0007) had impaired locomotor activity and decreased head turning, indicating vestibular and sensory dysfunction, compared to controls. The protein showed mitochondrial localization in neurons of zebrafish larvae, including in the spinal cord, peripheral nerves, and hindbrain, where it located with ATP5B (102910). Mutant fish showed increased levels of the mitochondrial fusion protein DRP1 (603850) compared to controls, suggesting mitochondrial biogenesis. </p>
</span>
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<h4>
<span class="mim-font">
<strong>REFERENCES</strong>
</span>
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<p />
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<li>
<p class="mim-text-font">
Corral-Juan, M., Casquero, P., Giraldo-Restrepo, N., Laurie, S., Martinez-Pineiro, A., Mateo-Montero, R. C., Ispierto, L., Vilas, D., Tolosa, E., Volpini, V., Alvarez-Ramo, R., Sanchez, I., Matilla-Duenas, A.
<strong>New spinocerebellar ataxia subtype caused by SAMD9L mutation triggering mitochondrial dysregulation (SCA49).</strong>
Brain Commun. 4: fcac030, 2022.
[PubMed: 35310830]
[Full Text: https://doi.org/10.1093/braincomms/fcac030]
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Cassandra L. Kniffin : 03/31/2022
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alopez : 07/27/2022<br>carol : 04/08/2022<br>carol : 04/07/2022<br>ckniffin : 03/31/2022
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