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Entry
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- #607250 - SPINOCEREBELLAR ATAXIA, AUTOSOMAL RECESSIVE, WITH AXONAL NEUROPATHY 1; SCAN1
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- OMIM
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<p>
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<span class="h4">#607250</span>
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<br />
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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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<li role="presentation">
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<a href="/clinicalSynopsis/607250"><strong>Clinical Synopsis</strong></a>
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<li role="presentation">
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<a href="/phenotypicSeries/PS607250"> <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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<a href="#inheritance">Inheritance</a>
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<a href="#pathogenesis">Pathogenesis</a>
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<li role="presentation" style="margin-left: 1em">
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<a href="#molecularGenetics">Molecular Genetics</a>
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<a href="#references"><strong>References</strong></a>
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<a href="#contributors"><strong>Contributors</strong></a>
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<li role="presentation">
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<a href="#creationDate"><strong>Creation Date</strong></a>
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<li role="presentation">
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<a href="#editHistory"><strong>Edit History</strong></a>
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<div style="display: table-cell;">External Links</div>
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</h4>
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</a>
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<div id="mimClinicalResourcesLinksFold" class="panel-collapse collapse in mimLinksFold" role="tabpanel" aria-labelledby="clinicalResources">
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<div class="panel-body small mim-panel-body">
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<div><a href="https://clinicaltrials.gov/search?cond=SPINOCEREBELLAR ATAXIA, AUTOSOMAL RECESSIVE, WITH AXONAL NEUROPATHY" class="mim-tip-hint" title="A registry of federally and privately supported clinical trials conducted in the United States and around the world." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Clinical Trials', 'domain': 'clinicaltrials.gov'})">Clinical Trials</a></div>
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<div><a href="https://www.orpha.net/consor/cgi-bin/ClinicalLabs_Search_Simple.php?lng=EN&LnkId=12564&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>
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<div><a href="https://www.ncbi.nlm.nih.gov/books/NBK1105/" class="mim-tip-hint" title="Expert-authored, peer-reviewed descriptions of inherited disorders including the uses of genetic testing in diagnosis, management, and genetic counseling." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Gene Reviews', 'domain': 'ncbi.nlm.nih.gov'})">Gene Reviews</a></div>
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<div><a href="https://www.diseaseinfosearch.org/x/6776" class="mim-tip-hint" title="Network of disease-specific advocacy organizations, universities, private companies, government agencies, and public policy organizations." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Genetic Alliance', 'domain': 'diseaseinfosearch.org'})">Genetic Alliance</a></div>
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<div><a href="https://www.ncbi.nlm.nih.gov/gtr/all/tests/?term=607250[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>
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<div><a href="https://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&Expert=94124" 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>
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<span class="small">
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<a href="#mimAnimalModelsLinksFold" id="mimAnimalModelsLinksToggle" class="collapsed mimSingletonTriangleToggle" role="button" data-toggle="collapse" data-parent="#mimExternalLinksAccordion">
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<div style="display: table-row">
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<div id="mimAnimalModelsLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5; display: table-cell;">►</div>
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<div style="display: table-cell;">Animal Models</div>
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</div>
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</a>
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</span>
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</span>
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</div>
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<div id="mimAnimalModelsLinksFold" class="panel-collapse collapse mimLinksFold" role="tabpanel">
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<div class="panel-body small mim-panel-body">
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<div><a href="https://www.alliancegenome.org/disease/DOID:0090115" 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>
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<div><a href="http://www.informatics.jax.org/disease/607250" 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>
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<div><a href="https://wormbase.org/resources/disease/DOID:0090115" 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>
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<span>
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<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.">
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</span>
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</span>
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</div>
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<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">
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<div>
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<a id="title" class="mim-anchor"></a>
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<div>
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<a id="number" class="mim-anchor"></a>
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<div class="text-right">
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<a href="#" class="mim-tip-icd" qtip_title="<strong>ICD+</strong>" qtip_text="
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<strong>SNOMEDCT:</strong> 765091006<br />
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<strong>ORPHA:</strong> 94124<br />
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<strong>DO:</strong> 0090115<br />
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">ICD+</a>
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</div>
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<div>
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<span class="h3">
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<span class="mim-font mim-tip-hint" title="Phenotype description, molecular basis known">
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<span class="text-danger"><strong>#</strong></span>
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607250
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</span>
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</span>
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</div>
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</div>
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<div>
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<a id="preferredTitle" class="mim-anchor"></a>
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<h3>
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<span class="mim-font">
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SPINOCEREBELLAR ATAXIA, AUTOSOMAL RECESSIVE, WITH AXONAL NEUROPATHY 1; SCAN1
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</span>
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</h3>
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</div>
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<div>
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<br />
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</div>
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</div>
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<div>
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<a id="phenotypeMap" class="mim-anchor"></a>
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<h4>
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<span class="mim-font">
|
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<strong>Phenotype-Gene Relationships</strong>
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</span>
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</h4>
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<div>
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<table class="table table-bordered table-condensed table-hover small mim-table-padding">
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<thead>
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<tr class="active">
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<th>
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Location
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</th>
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<th>
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Phenotype
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</th>
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<th>
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Phenotype <br /> MIM number
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</th>
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<th>
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Inheritance
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</th>
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<th>
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Phenotype <br /> mapping key
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</th>
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<th>
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Gene/Locus
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</th>
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<th>
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Gene/Locus <br /> MIM number
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</th>
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</thead>
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<tbody>
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<tr>
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<td>
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<span class="mim-font">
|
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<a href="/geneMap/14/451?start=-3&limit=10&highlight=451">
|
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14q32.11
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</a>
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</span>
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</td>
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<td>
|
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<span class="mim-font">
|
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?Spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 1
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<span class="mim-tip-hint" title="A question mark (?) indicates that the relationship between the phenotype and gene is provisional">
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<span class="glyphicon glyphicon-question-sign" aria-hidden="true"></span>
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</span>
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</span>
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</td>
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<td>
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<span class="mim-font">
|
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<a href="/entry/607250"> 607250 </a>
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</span>
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</td>
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<td>
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<span class="mim-font">
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<abbr class="mim-tip-hint" title="Autosomal recessive">AR</abbr>
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</td>
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<td>
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<span class="mim-font">
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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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</td>
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<span class="mim-font">
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TDP1
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</span>
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</td>
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<td>
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<span class="mim-font">
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<a href="/entry/607198"> 607198 </a>
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</span>
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</td>
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</tr>
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</tbody>
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</table>
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<div>
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<div class="btn-group ">
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<a href="/clinicalSynopsis/607250" class="btn btn-warning" role="button"> Clinical Synopsis </a>
|
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<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')">
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<span class="caret"></span>
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<span class="sr-only">Toggle Dropdown</span>
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</button>
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</div>
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<div class="btn-group">
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<a href="/phenotypicSeries/PS607250" class="btn btn-info" role="button"> Phenotypic Series </a>
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<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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<span class="caret"></span>
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<span class="sr-only">Toggle Dropdown</span>
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</button>
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</div>
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<div class="btn-group">
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<button type="button" class="btn btn-success dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
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PheneGene Graphics <span class="caret"></span>
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</button>
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<ul class="dropdown-menu" style="width: 17em;">
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<li><a href="/graph/linear/607250" target="_blank" onclick="gtag('event', 'mim_graph', {'destination': 'Linear'})"> Linear </a></li>
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<li><a href="/graph/radial/607250" target="_blank" onclick="gtag('event', 'mim_graph', {'destination': 'Radial'})"> Radial </a></li>
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</ul>
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</div>
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<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>
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<div>
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<p />
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</div>
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<div id="mimClinicalSynopsisFold" class="well well-sm collapse mimSingletonToggleFold">
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<div class="small" style="margin: 5px">
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<div>
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<div>
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<span class="h5 mim-font">
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<strong> INHERITANCE </strong>
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</span>
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</div>
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<div style="margin-left: 2em;">
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<div>
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<span class="mim-font">
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- Autosomal recessive <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/258211005" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">258211005</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0441748&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0441748</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0000007" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0000007</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0000007" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0000007</a>]</span><br />
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</span>
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</div>
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</div>
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</div>
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<div>
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<div>
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<span class="h5 mim-font">
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<strong> SKELETAL </strong>
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</span>
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</div>
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<div style="margin-left: 2em;">
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<div>
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<div>
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<span class="h5 mim-font">
|
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<em> Feet </em>
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</span>
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</div>
|
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<div style="margin-left: 2em;">
|
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<span class="mim-font">
|
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|
|
- Pes cavus <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/205091006" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">205091006</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/36755004" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">36755004</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/86900005" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">86900005</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/Q66.7" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">Q66.7</a>]</span> <span class="mim-feature-ids hidden">[ICD9CM: <a href="https://purl.bioontology.org/ontology/ICD9CM/736.73" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">736.73</a>, <a href="https://purl.bioontology.org/ontology/ICD9CM/754.71" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">754.71</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0728829&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0728829</a>, <a href="https://bioportal.bioontology.org/search?q=C0039273&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0039273</a>, <a href="https://bioportal.bioontology.org/search?q=C2239098&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C2239098</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001761" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001761</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001761" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001761</a>]</span> <a href="https://elementsofmorphology.nih.gov/index.cgi?tid=2ad12e53b20f47e5685234fa29da6610" target="_blank" class="small mim-tip-eom" title="<img src="https://elementsofmorphology.nih.gov/images/terms/Pes_Cavus-small.jpg"> <br/>Further Information: <a href="https://elementsofmorphology.nih.gov/index.cgi?tid=2ad12e53b20f47e5685234fa29da6610" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'EOM\', \'domain\': \'elementsofmorphology.nih.gov\'})">Elements of Morphology</a>"><span class="glyphicon glyphicon-user" aria-hidden="true"></span></a><br />
|
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</span>
|
|
</div>
|
|
</div>
|
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|
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</div>
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</div>
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<div>
|
|
<div>
|
|
<span class="h5 mim-font">
|
|
<strong> MUSCLE, SOFT TISSUES </strong>
|
|
</span>
|
|
</div>
|
|
<div style="margin-left: 2em;">
|
|
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|
<div>
|
|
<span class="mim-font">
|
|
|
|
- Distal muscle weakness due to sensory neuropathy <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C5194391&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C5194391</a>]</span> <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/249942005" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">249942005</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002460" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002460</a>]</span><br />
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|
|
</span>
|
|
</div>
|
|
|
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</div>
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|
|
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</div>
|
|
|
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<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">
|
|
|
|
- Cerebellar ataxia <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/85102008" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">85102008</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0007758&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0007758</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001251" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001251</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001251" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001251</a>]</span><br /> -
|
|
Steppage gait <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/27253007" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">27253007</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0427149&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0427149</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003376" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003376</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003376" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003376</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 /> -
|
|
Steppage gait <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/27253007" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">27253007</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0427149&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0427149</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003376" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003376</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003376" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003376</a>]</span><br /> -
|
|
Seizures (in some patients) <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/91175000" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">91175000</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0036572&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0036572</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001250" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001250</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001250" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001250</a>]</span><br /> -
|
|
Cerebellar atrophy <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0740279&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0740279</a> 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> <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 /> -
|
|
Cerebral atrophy, mild <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C3280710&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C3280710</a>]</span> <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/278849000" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">278849000</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002059" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002059</a>]</span><br />
|
|
|
|
</span>
|
|
</div>
|
|
</div>
|
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|
|
|
|
<div>
|
|
<div>
|
|
<span class="h5 mim-font">
|
|
<em> Peripheral Nervous System </em>
|
|
</span>
|
|
</div>
|
|
<div style="margin-left: 2em;">
|
|
<span class="mim-font">
|
|
|
|
- Axonal sensorimotor neuropathy <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/230657007" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">230657007</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0393907&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0393907</a>]</span><br /> -
|
|
Distal sensory impairment <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C1847584&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C1847584</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002936" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002936</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0002936" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0002936</a>]</span><br /> -
|
|
Hyporeflexia <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/835279003" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">835279003</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/405946002" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">405946002</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0700078&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0700078</a>, <a href="https://bioportal.bioontology.org/search?q=C0151888&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0151888</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001265" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001265</a>, <a href="https://hpo.jax.org/app/browse/term/HP:0001315" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001315</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001265" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001265</a>]</span><br /> -
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Areflexia <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/37280007" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">37280007</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0234146&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0234146</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001284" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001284</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001284" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001284</a>]</span><br /> -
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Sural nerve biopsy shows loss of myelinated fibers <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C1837523&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C1837523</a>]</span><br />
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</span>
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</div>
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</div>
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</div>
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</div>
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<div>
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<div>
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<span class="h5 mim-font">
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<strong> LABORATORY ABNORMALITIES </strong>
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</span>
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</div>
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<div style="margin-left: 2em;">
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<div>
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<span class="mim-font">
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- Hypercholesterolemia, mild <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C5194392&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C5194392</a>]</span> <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/13644009" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">13644009</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003124" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003124</a>]</span><br /> -
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Hypoalbuminemia, mild <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C5194393&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C5194393</a>]</span> <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/119247004" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">119247004</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/1153477009" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">1153477009</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0003073" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0003073</a>]</span><br />
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</span>
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</div>
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</div>
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</div>
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<div>
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<div>
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<span class="h5 mim-font">
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<strong> MISCELLANEOUS </strong>
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</span>
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<div style="margin-left: 2em;">
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<div>
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<span class="mim-font">
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- Onset in the first or second decade<br /> -
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One Saudi Arabian family has been reported (last curated April 2019)<br />
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</span>
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</div>
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</div>
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</div>
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<div>
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<div>
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<span class="h5 mim-font">
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<strong> MOLECULAR BASIS </strong>
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</span>
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</div>
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<div style="margin-left: 2em;">
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<div>
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<span class="mim-font">
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- Caused by mutation in the tyrosyl-DNA phosphodiesterase 1 gene (TDP1, <a href="/entry/607198#0001">607198.0001</a>)<br />
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</span>
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</div>
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</div>
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</div>
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<div class="text-right">
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<a href="#mimClinicalSynopsisFold" data-toggle="collapse">▲ Close</a>
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</div>
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</div>
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</div>
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<div id="mimPhenotypicSeriesFold" class="well well-sm collapse mimSingletonToggleFold">
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<div class="small">
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<div class="row">
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<div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
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<h5>
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Spinocerebellar ataxia, autosomal recessive, with axonal neuropathy
|
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- <a href="/phenotypicSeries/PS607250">PS607250</a>
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- 3 Entries
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</h5>
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</div>
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</div>
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<div class="row" style="margin-left: 0.125em; margin-right: 0.125em;">
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<table class="table table-bordered table-condensed table-hover mim-table-padding">
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<thead>
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<tr>
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<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
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<strong>Location</strong>
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</th>
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<th class="col-lg-5 col-md-5 col-sm-5 col-xs-6 text-nowrap">
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<strong>Phenotype</strong>
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</th>
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<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
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<strong>Inheritance</strong>
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</th>
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<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
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<strong>Phenotype<br />mapping key</strong>
|
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</th>
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<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
|
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<strong>Phenotype<br />MIM number</strong>
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</th>
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<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
|
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<strong>Gene/Locus</strong>
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</th>
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<th class="col-lg-1 col-md-1 col-sm-1 col-xs-1 text-nowrap">
|
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<strong>Gene/Locus<br />MIM number</strong>
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</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>
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<span class="mim-font">
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<a href="/geneMap/1/619?start=-3&limit=10&highlight=619"> 1p32.3 </a>
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</span>
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</td>
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<td>
|
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<span class="mim-font">
|
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<a href="/entry/618387"> Spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 3 </a>
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</span>
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</td>
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<td>
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<span class="mim-font">
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<abbr class="mim-tip-hint" title="Autosomal recessive">AR</abbr>
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</span>
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</td>
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<td>
|
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<span class="mim-font">
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|
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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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</span>
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</td>
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<td>
|
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<span class="mim-font">
|
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<a href="/entry/618387"> 618387 </a>
|
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</span>
|
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</td>
|
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<td>
|
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<span class="mim-font">
|
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<a href="/entry/615623"> COA7 </a>
|
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</span>
|
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</td>
|
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<td>
|
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<span class="mim-font">
|
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<a href="/entry/615623"> 615623 </a>
|
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</span>
|
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</td>
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</tr>
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<tr>
|
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<td>
|
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<span class="mim-font">
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|
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<a href="/geneMap/9/594?start=-3&limit=10&highlight=594"> 9q34.13 </a>
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|
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</span>
|
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</td>
|
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<td>
|
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<span class="mim-font">
|
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<a href="/entry/606002"> Spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2 </a>
|
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</span>
|
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</td>
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<td>
|
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<span class="mim-font">
|
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|
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<abbr class="mim-tip-hint" title="Autosomal recessive">AR</abbr>
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|
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</span>
|
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</td>
|
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<td>
|
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<span class="mim-font">
|
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|
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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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|
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</span>
|
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</td>
|
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<td>
|
|
<span class="mim-font">
|
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<a href="/entry/606002"> 606002 </a>
|
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</span>
|
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</td>
|
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<td>
|
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<span class="mim-font">
|
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<a href="/entry/608465"> SETX </a>
|
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</span>
|
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</td>
|
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<td>
|
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<span class="mim-font">
|
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<a href="/entry/608465"> 608465 </a>
|
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</span>
|
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</td>
|
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</tr>
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|
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<tr>
|
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<td>
|
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<span class="mim-font">
|
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|
|
<a href="/geneMap/14/451?start=-3&limit=10&highlight=451"> 14q32.11 </a>
|
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|
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</span>
|
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</td>
|
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<td>
|
|
<span class="mim-font">
|
|
<a href="/entry/607250"> ?Spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 1 </a>
|
|
</span>
|
|
</td>
|
|
<td>
|
|
<span class="mim-font">
|
|
|
|
<abbr class="mim-tip-hint" title="Autosomal recessive">AR</abbr>
|
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|
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</span>
|
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</td>
|
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<td>
|
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<span class="mim-font">
|
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|
|
<abbr class="mim-tip-hint" title="3 - The molecular basis of the disorder is known"> 3 </abbr>
|
|
|
|
</span>
|
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</td>
|
|
<td>
|
|
<span class="mim-font">
|
|
<a href="/entry/607250"> 607250 </a>
|
|
</span>
|
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</td>
|
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<td>
|
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<span class="mim-font">
|
|
<a href="/entry/607198"> TDP1 </a>
|
|
</span>
|
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</td>
|
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<td>
|
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<span class="mim-font">
|
|
<a href="/entry/607198"> 607198 </a>
|
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</span>
|
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</td>
|
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</tr>
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</tbody>
|
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</table>
|
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</div>
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|
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<div class="text-right small">
|
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<a href="#mimPhenotypicSeriesFold" data-toggle="collapse">▲ Close</a>
|
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</div>
|
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</div>
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</div>
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</div>
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<div>
|
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<br />
|
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</div>
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<div>
|
|
<a id="text" class="mim-anchor"></a>
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|
<h4 href="#mimTextFold" id="mimTextToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
|
|
<span id="mimTextToggleTriangle" class="small mimTextToggleTriangle">▼</span>
|
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|
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<span class="mim-font">
|
|
<span class="mim-tip-floating" qtip_title="<strong>Looking For More References?</strong>" qtip_text="Click the 'reference plus' icon <span class='glyphicon glyphicon-plus-sign'></span> at the end of each OMIM text paragraph to see more references related to the content of the preceding paragraph.">
|
|
<strong>TEXT</strong>
|
|
</span>
|
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</span>
|
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</h4>
|
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<div id="mimTextFold" class="collapse in ">
|
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<span class="mim-text-font">
|
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<p>A number sign (#) is used with this entry because of evidence that autosomal recessive spinocerebellar ataxia with axonal neuropathy-1 (SCAN1) is caused by homozygous mutation in the TDP1 gene (<a href="/entry/607198">607198</a>) on chromosome 14q31. One such family has been reported.</p>
|
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</span>
|
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<div>
|
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<br />
|
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</div>
|
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</div>
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<div>
|
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<a id="description" class="mim-anchor"></a>
|
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<h4 href="#mimDescriptionFold" id="mimDescriptionToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
|
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<span id="mimDescriptionToggleTriangle" class="small mimTextToggleTriangle">▼</span>
|
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<span class="mim-font">
|
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<strong>Description</strong>
|
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</span>
|
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</h4>
|
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</div>
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<div id="mimDescriptionFold" class="collapse in ">
|
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<span class="mim-text-font">
|
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<p>Spinocerebellar ataxia with axonal neuropathy-1 (SCAN1) is an autosomal recessive neurologic disorder characterized by onset of gait disturbances in the first or second decades of life. Affected individuals have cerebellar ataxia associated with cerebellar atrophy on brain imaging, as well as an axonal sensorimotor neuropathy with distal sensory impairment, hypo- or areflexia, pes cavus, and steppage gait (summary by <a href="#2" class="mim-tip-reference" title="Takashima, H., Boerkoel, C. F., John, J., Saifi, G. M., Salih, M. A. M., Armstrong, D., Mao, Y., Quiocho, F. A., Roa, B. B., Nakagawa, M., Stockton, D. W., Lupski, J. R. <strong>Mutation of TDP1, encoding a topoisomerase I-dependent DNA damage repair enzyme, in spinocerebellar ataxia with axonal neuropathy.</strong> Nature Genet. 32: 267-272, 2002.[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/12244316/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">12244316</a>] [<a href="https://doi.org/10.1038/ng987" target="_blank" onclick="gtag('event', 'mim_outbound', {'destination': 'Publisher'})">Full Text</a>]" pmid="12244316">Takashima et al., 2002</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12244316" 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>Genetic Heterogeneity of Spinocerebellar Ataxia with Axonal Neuropathy</em></strong></p><p>
|
|
See also SCAN2 (<a href="/entry/606002">606002</a>), caused by mutation in the SETX gene (<a href="/entry/608465">608465</a>) on chromosome 9q34, and SCAN3 (<a href="/entry/618387">618387</a>), caused by mutation in the COA7 gene (<a href="/entry/615623">615623</a>) on chromosome 1p32.</p>
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</span>
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<div>
|
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<br />
|
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</div>
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</div>
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<div>
|
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<a id="clinicalFeatures" class="mim-anchor"></a>
|
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<h4 href="#mimClinicalFeaturesFold" id="mimClinicalFeaturesToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
|
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<span id="mimClinicalFeaturesToggleTriangle" class="small mimTextToggleTriangle">▼</span>
|
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<span class="mim-font">
|
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<strong>Clinical Features</strong>
|
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</span>
|
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</h4>
|
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</div>
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|
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<div id="mimClinicalFeaturesFold" class="collapse in mimTextToggleFold">
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<span class="mim-text-font">
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<p><a href="#2" class="mim-tip-reference" title="Takashima, H., Boerkoel, C. F., John, J., Saifi, G. M., Salih, M. A. M., Armstrong, D., Mao, Y., Quiocho, F. A., Roa, B. B., Nakagawa, M., Stockton, D. W., Lupski, J. R. <strong>Mutation of TDP1, encoding a topoisomerase I-dependent DNA damage repair enzyme, in spinocerebellar ataxia with axonal neuropathy.</strong> Nature Genet. 32: 267-272, 2002.[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/12244316/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">12244316</a>] [<a href="https://doi.org/10.1038/ng987" target="_blank" onclick="gtag('event', 'mim_outbound', {'destination': 'Publisher'})">Full Text</a>]" pmid="12244316">Takashima et al. (2002)</a> investigated a large multigenerational consanguineous Saudi Arabian family segregating an autosomal recessive ataxia with peripheral axonal motor and sensory neuropathy, distal muscular atrophy, pes cavus, and steppage gait. Detailed evaluation of 3 of the 9 affected individuals confirmed that they had cerebellar ataxia and axonal neuropathy, a combination that the authors designated SCAN1. All had cerebellar atrophy on brain imaging, and 2 had mild cerebral atrophy. One patient had a history of seizures, but all had normal intelligence. All 3 individuals had mild hypercholesterolemia and borderline hypoalbuminemia. The patients tested negative for mutations in most genes known to be associated with ataxia and neuropathy. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12244316" 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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</span>
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<div>
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<br />
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</div>
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</div>
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<div>
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<a id="inheritance" class="mim-anchor"></a>
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<h4 href="#mimInheritanceFold" id="mimInheritanceToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
|
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<span id="mimInheritanceToggleTriangle" class="small mimTextToggleTriangle">▼</span>
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<span class="mim-font">
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<strong>Inheritance</strong>
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</span>
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</h4>
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</div>
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<div id="mimInheritanceFold" class="collapse in mimTextToggleFold">
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<span class="mim-text-font">
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<p>The transmission pattern of SCAN1 in the family reported by <a href="#2" class="mim-tip-reference" title="Takashima, H., Boerkoel, C. F., John, J., Saifi, G. M., Salih, M. A. M., Armstrong, D., Mao, Y., Quiocho, F. A., Roa, B. B., Nakagawa, M., Stockton, D. W., Lupski, J. R. <strong>Mutation of TDP1, encoding a topoisomerase I-dependent DNA damage repair enzyme, in spinocerebellar ataxia with axonal neuropathy.</strong> Nature Genet. 32: 267-272, 2002.[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/12244316/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">12244316</a>] [<a href="https://doi.org/10.1038/ng987" target="_blank" onclick="gtag('event', 'mim_outbound', {'destination': 'Publisher'})">Full Text</a>]" pmid="12244316">Takashima et al. (2002)</a> was consistent with autosomal recessive inheritance. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12244316" 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="El-Khamisy, S. F., Saifi, G. M., Weinfeld, M., Johansson, F., Helleday, T., Lupski, J. R., Caldecott, K. W. <strong>Defective DNA single-strand break repair in spinocerebellar ataxia with axonal neuropathy-1.</strong> Nature 434: 108-113, 2005.[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/15744309/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">15744309</a>] [<a href="https://doi.org/10.1038/nature03314" target="_blank" onclick="gtag('event', 'mim_outbound', {'destination': 'Publisher'})">Full Text</a>]" pmid="15744309">El-Khamisy et al. (2005)</a> showed that in human cells TDP1 is required for repair of chromosomal single-strand breaks arising independently of DNA replication from abortive topoisomerase-1 (TOP1; <a href="/entry/126420">126420</a>) activity or oxidative stress. They reported that TDP1 is sequestered into multiprotein single-strand break repair (SSBR) complexes by direct interaction with DNA ligase III-alpha (<a href="/entry/600940">600940</a>) and that these complexes are catalytically inactive in SCAN1 cells. <a href="#1" class="mim-tip-reference" title="El-Khamisy, S. F., Saifi, G. M., Weinfeld, M., Johansson, F., Helleday, T., Lupski, J. R., Caldecott, K. W. <strong>Defective DNA single-strand break repair in spinocerebellar ataxia with axonal neuropathy-1.</strong> Nature 434: 108-113, 2005.[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/15744309/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">15744309</a>] [<a href="https://doi.org/10.1038/nature03314" target="_blank" onclick="gtag('event', 'mim_outbound', {'destination': 'Publisher'})">Full Text</a>]" pmid="15744309">El-Khamisy et al. (2005)</a> concluded that their data identified a defect in SSBR in a neurodegenerative disease, and implicated this process in the maintenance of genetic integrity in postmitotic neurons. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=15744309" 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 affected members of a multigenerational consanguineous Saudi Arabian family with SCAN1, <a href="#2" class="mim-tip-reference" title="Takashima, H., Boerkoel, C. F., John, J., Saifi, G. M., Salih, M. A. M., Armstrong, D., Mao, Y., Quiocho, F. A., Roa, B. B., Nakagawa, M., Stockton, D. W., Lupski, J. R. <strong>Mutation of TDP1, encoding a topoisomerase I-dependent DNA damage repair enzyme, in spinocerebellar ataxia with axonal neuropathy.</strong> Nature Genet. 32: 267-272, 2002.[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/12244316/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">12244316</a>] [<a href="https://doi.org/10.1038/ng987" target="_blank" onclick="gtag('event', 'mim_outbound', {'destination': 'Publisher'})">Full Text</a>]" pmid="12244316">Takashima et al. (2002)</a> identified a homozygous missense mutation in the TDP1 gene (H493R; <a href="/entry/607198#0001">607198.0001</a>). The mutation was found by genomewide linkage mapping and analysis of candidate genes. Functional studies of the variant and studies of patient cells were not performed, but molecular modeling suggested that the mutation would disrupt the active site of the enzyme. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12244316" 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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El-Khamisy, S. F., Saifi, G. M., Weinfeld, M., Johansson, F., Helleday, T., Lupski, J. R., Caldecott, K. W.
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<strong>Defective DNA single-strand break repair in spinocerebellar ataxia with axonal neuropathy-1.</strong>
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Nature 434: 108-113, 2005.
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[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/15744309/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">15744309</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=15744309" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
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[<a href="https://doi.org/10.1038/nature03314" target="_blank">Full Text</a>]
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Takashima, H., Boerkoel, C. F., John, J., Saifi, G. M., Salih, M. A. M., Armstrong, D., Mao, Y., Quiocho, F. A., Roa, B. B., Nakagawa, M., Stockton, D. W., Lupski, J. R.
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<strong>Mutation of TDP1, encoding a topoisomerase I-dependent DNA damage repair enzyme, in spinocerebellar ataxia with axonal neuropathy.</strong>
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Nature Genet. 32: 267-272, 2002.
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[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/12244316/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">12244316</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12244316" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
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Ada Hamosh - updated : 2/1/2006
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Victor A. McKusick : 9/23/2002
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carol : 04/15/2019
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ckniffin : 04/15/2019<br>alopez : 02/02/2006<br>terry : 2/1/2006<br>alopez : 9/24/2002
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SPINOCEREBELLAR ATAXIA, AUTOSOMAL RECESSIVE, WITH AXONAL NEUROPATHY 1; SCAN1
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<strong>SNOMEDCT:</strong> 765091006;
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<strong>ORPHA:</strong> 94124;
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<strong>DO:</strong> 0090115;
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?Spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 1
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Autosomal recessive
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TDP1
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<p>A number sign (#) is used with this entry because of evidence that autosomal recessive spinocerebellar ataxia with axonal neuropathy-1 (SCAN1) is caused by homozygous mutation in the TDP1 gene (607198) on chromosome 14q31. One such family has been reported.</p>
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<p>Spinocerebellar ataxia with axonal neuropathy-1 (SCAN1) is an autosomal recessive neurologic disorder characterized by onset of gait disturbances in the first or second decades of life. Affected individuals have cerebellar ataxia associated with cerebellar atrophy on brain imaging, as well as an axonal sensorimotor neuropathy with distal sensory impairment, hypo- or areflexia, pes cavus, and steppage gait (summary by Takashima et al., 2002). </p><p><strong><em>Genetic Heterogeneity of Spinocerebellar Ataxia with Axonal Neuropathy</em></strong></p><p>
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See also SCAN2 (606002), caused by mutation in the SETX gene (608465) on chromosome 9q34, and SCAN3 (618387), caused by mutation in the COA7 gene (615623) on chromosome 1p32.</p>
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<p>Takashima et al. (2002) investigated a large multigenerational consanguineous Saudi Arabian family segregating an autosomal recessive ataxia with peripheral axonal motor and sensory neuropathy, distal muscular atrophy, pes cavus, and steppage gait. Detailed evaluation of 3 of the 9 affected individuals confirmed that they had cerebellar ataxia and axonal neuropathy, a combination that the authors designated SCAN1. All had cerebellar atrophy on brain imaging, and 2 had mild cerebral atrophy. One patient had a history of seizures, but all had normal intelligence. All 3 individuals had mild hypercholesterolemia and borderline hypoalbuminemia. The patients tested negative for mutations in most genes known to be associated with ataxia and neuropathy. </p>
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<p>The transmission pattern of SCAN1 in the family reported by Takashima et al. (2002) was consistent with autosomal recessive inheritance. </p>
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<p>El-Khamisy et al. (2005) showed that in human cells TDP1 is required for repair of chromosomal single-strand breaks arising independently of DNA replication from abortive topoisomerase-1 (TOP1; 126420) activity or oxidative stress. They reported that TDP1 is sequestered into multiprotein single-strand break repair (SSBR) complexes by direct interaction with DNA ligase III-alpha (600940) and that these complexes are catalytically inactive in SCAN1 cells. El-Khamisy et al. (2005) concluded that their data identified a defect in SSBR in a neurodegenerative disease, and implicated this process in the maintenance of genetic integrity in postmitotic neurons. </p>
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<p>In affected members of a multigenerational consanguineous Saudi Arabian family with SCAN1, Takashima et al. (2002) identified a homozygous missense mutation in the TDP1 gene (H493R; 607198.0001). The mutation was found by genomewide linkage mapping and analysis of candidate genes. Functional studies of the variant and studies of patient cells were not performed, but molecular modeling suggested that the mutation would disrupt the active site of the enzyme. </p>
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<strong>REFERENCES</strong>
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El-Khamisy, S. F., Saifi, G. M., Weinfeld, M., Johansson, F., Helleday, T., Lupski, J. R., Caldecott, K. W.
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<strong>Defective DNA single-strand break repair in spinocerebellar ataxia with axonal neuropathy-1.</strong>
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Nature 434: 108-113, 2005.
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[PubMed: 15744309]
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[Full Text: https://doi.org/10.1038/nature03314]
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Takashima, H., Boerkoel, C. F., John, J., Saifi, G. M., Salih, M. A. M., Armstrong, D., Mao, Y., Quiocho, F. A., Roa, B. B., Nakagawa, M., Stockton, D. W., Lupski, J. R.
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<strong>Mutation of TDP1, encoding a topoisomerase I-dependent DNA damage repair enzyme, in spinocerebellar ataxia with axonal neuropathy.</strong>
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Nature Genet. 32: 267-272, 2002.
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[PubMed: 12244316]
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[Full Text: https://doi.org/10.1038/ng987]
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Ada Hamosh - updated : 2/1/2006
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Victor A. McKusick : 9/23/2002
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