nih-gov/www.ncbi.nlm.nih.gov/omim/601428

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<title>
Entry
- *601428 - RNA, U4ATAC SMALL NUCLEAR; RNU4ATAC
- OMIM
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<span class="h4">*601428</span>
<br />
<strong>Table of Contents</strong>
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<a href="#title"><strong>Title</strong></a>
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<a href="#geneMap"><strong>Gene-Phenotype Relationships</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="#cloning">Cloning and Expression</a>
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<a href="#geneFunction">Gene Function</a>
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<a href="#mapping">Mapping</a>
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<a href="#molecularGenetics">Molecular Genetics</a>
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<a href="#allelicVariants"><strong>Allelic Variants</strong></a>
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<div><a href="https://www.proteinatlas.org/search/RNU4ATAC" class="mim-tip-hint" title="The Human Protein Atlas contains information for a large majority of all human protein-coding genes regarding the expression and localization of the corresponding proteins based on both RNA and protein data." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'HumanProteinAtlas', 'domain': 'proteinatlas.org'})">Human Protein Atlas</a></div>
</div>
</div>
</div>
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<div class="panel-heading mim-panel-heading" role="tab" id="mimGeneInfo">
<span class="panel-title">
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<div style="display: table-row">
<div id="mimGeneInfoLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5; display: table-cell;">&#9658;</div>
&nbsp;
<div style="display: table-cell;">Gene Info</div>
</div>
</a>
</span>
</span>
</div>
<div id="mimGeneInfoLinksFold" class="panel-collapse collapse mimLinksFold" role="tabpanel">
<div class="panel-body small mim-panel-body">
<div><a href="http://biogps.org/#goto=genereport&id=100151683" class="mim-tip-hint" title="The Gene Portal Hub; customizable portal of gene and protein function information." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'BioGPS', 'domain': 'biogps.org'})">BioGPS</a></div>
<div><a href="https://www.ensembl.org/Homo_sapiens/Gene/Summary?db=core;g=ENSG00000264229;t=ENST00000580972" class="mim-tip-hint" title="Orthologs, paralogs, regulatory regions, and splice variants." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Ensembl', 'domain': 'ensembl.org'})">Ensembl</a></div>
<div><a href="https://www.genecards.org/cgi-bin/carddisp.pl?gene=RNU4ATAC" class="mim-tip-hint" title="The Human Genome Compendium; web-based cards integrating automatically mined information on human genes." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'GeneCards', 'domain': 'genecards.org'})">GeneCards</a></div>
<div><a href="http://amigo.geneontology.org/amigo/search/annotation?q=RNU4ATAC" class="mim-tip-hint" title="Terms, defined using controlled vocabulary, representing gene product properties (biologic process, cellular component, molecular function) across species." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'GeneOntology', 'domain': 'amigo.geneontology.org'})">Gene Ontology</a></div>
<div><a href="https://www.genome.jp/dbget-bin/www_bget?hsa+100151683" class="mim-tip-hint" title="Kyoto Encyclopedia of Genes and Genomes; diagrams of signaling pathways." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'KEGG', 'domain': 'genome.jp'})">KEGG</a></div>
<dd><a href="http://v1.marrvel.org/search/gene/RNU4ATAC" class="mim-tip-hint" title="Model organism Aggregated Resources for Rare Variant ExpLoration." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'MARRVEL', 'domain': 'marrvel.org'})">MARRVEL</a></dd>
<dd><a href="https://monarchinitiative.org/NCBIGene:100151683" class="mim-tip-hint" title="Monarch Initiative." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Monarch', 'domain': 'monarchinitiative.org'})">Monarch</a></dd>
<div><a href="https://www.ncbi.nlm.nih.gov/gene/100151683" class="mim-tip-hint" title="Gene-specific map, sequence, expression, structure, function, citation, and homology data." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'NCBI Gene', 'domain': 'ncbi.nlm.nih.gov'})">NCBI Gene</a></div>
<div><a href="https://genome.ucsc.edu/cgi-bin/hgGene?db=hg38&hgg_chrom=chr2&hgg_gene=ENST00000580972.1&hgg_start=121530880&hgg_end=121531009&hgg_type=knownGene" class="mim-tip-hint" title="UCSC Genome Bioinformatics; gene-specific structure and function information with links to other databases." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'UCSC', 'domain': 'genome.ucsc.edu'})">UCSC</a></div>
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<div class="panel-heading mim-panel-heading" role="tab" id="mimClinicalResources">
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<div id="mimClinicalResourcesLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5; display: table-cell;">&#9658;</div>
&nbsp;
<div style="display: table-cell;">Clinical Resources</div>
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</a>
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<div id="mimClinicalResourcesLinksFold" class="panel-collapse collapse mimLinksFold" role="tabpanel" aria-labelledby="clinicalResources">
<div class="panel-body small mim-panel-body">
<div><a href="https://search.clinicalgenome.org/kb/genes/HGNC:34016" class="mim-tip-hint" title="A ClinGen curated resource of ratings for the strength of evidence supporting or refuting the clinical validity of the claim(s) that variation in a particular gene causes disease." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'ClinGen Validity', 'domain': 'search.clinicalgenome.org'})">ClinGen Validity</a></div>
<div><a href="https://www.ncbi.nlm.nih.gov/gtr/all/tests/?term=601428[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>
</div>
</div>
<div class="panel panel-default" style="margin-top: 0px; border-radius: 0px">
<div class="panel-heading mim-panel-heading" role="tab" id="mimVariation">
<span class="panel-title">
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<span id="mimVariationLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5">&#9660;</span> Variation
</a>
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</span>
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<div id="mimVariationLinksFold" class="panel-collapse collapse in mimLinksFold" role="tabpanel">
<div class="panel-body small mim-panel-body">
<div><a href="https://www.ncbi.nlm.nih.gov/clinvar?term=601428[MIM]" class="mim-tip-hint" title="ClinVar aggregates information about sequence variation and its relationship to human health." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">ClinVar</a></div>
<div><a href="https://www.deciphergenomics.org/gene/RNU4ATAC/overview/clinical-info" class="mim-tip-hint" title="DECIPHER" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'DECIPHER', 'domain': 'DECIPHER'})">DECIPHER</a></div>
<div><a href="https://gnomad.broadinstitute.org/gene/ENSG00000264229" class="mim-tip-hint" title="The Genome Aggregation Database (gnomAD), Broad Institute." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'gnomAD', 'domain': 'gnomad.broadinstitute.org'})">gnomAD</a></div>
<div><a href="https://www.gwascentral.org/search?q=RNU4ATAC" class="mim-tip-hint" title="GWAS Central; summary level genotype-to-phenotype information from genetic association studies." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'GWAS Central', 'domain': 'gwascentral.org'})">GWAS Central&nbsp;</a></div>
<div><a href="http://www.hgmd.cf.ac.uk/ac/gene.php?gene=RNU4ATAC" class="mim-tip-hint" title="Human Gene Mutation Database; published mutations causing or associated with human inherited disease; disease-associated/functional polymorphisms." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'HGMD', 'domain': 'hgmd.cf.ac.uk'})">HGMD</a></div>
<div><a href="https://evs.gs.washington.edu/EVS/PopStatsServlet?searchBy=Gene+Hugo&target=RNU4ATAC&upstreamSize=0&downstreamSize=0&x=0&y=0" class="mim-tip-hint" title="National Heart, Lung, and Blood Institute Exome Variant Server." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'NHLBI EVS', 'domain': 'evs.gs.washington.edu'})">NHLBI EVS</a></div>
<div><a href="https://www.pharmgkb.org/gene/PA162401976" class="mim-tip-hint" title="Pharmacogenomics Knowledge Base; curated and annotated information regarding the effects of human genetic variations on drug response." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PharmGKB', 'domain': 'pharmgkb.org'})">PharmGKB</a></div>
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<div class="panel panel-default" style="margin-top: 0px; border-radius: 0px">
<div class="panel-heading mim-panel-heading" role="tab" id="mimAnimalModels">
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<div id="mimAnimalModelsLinksToggleTriangle" class="small mimSingletonTriangle" style="color: #337CB5; display: table-cell;">&#9658;</div>
&nbsp;
<div style="display: table-cell;">Animal Models</div>
</div>
</a>
</span>
</span>
</div>
<div id="mimAnimalModelsLinksFold" class="panel-collapse collapse mimLinksFold" role="tabpanel">
<div class="panel-body small mim-panel-body">
<div><a href="https://www.alliancegenome.org/gene/HGNC:34016" class="mim-tip-hint" title="Search Across Species; explore model organism and human comparative genomics." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'Alliance Genome', 'domain': 'alliancegenome.org'})">Alliance Genome</a></div>
<div><a href="http://v1.marrvel.org/search/gene/RNU4ATAC#HomologGenesPanel" class="mim-tip-hint" title="Model organism Aggregated Resources for Rare Variant ExpLoration." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'MARRVEL', 'domain': 'marrvel.org'})">MARRVEL</a></div>
<div><a href="https://www.ncbi.nlm.nih.gov/gene/100151683/ortholog/" class="mim-tip-hint" title="Orthologous genes at NCBI." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'NCBI Orthologs', 'domain': 'ncbi.nlm.nih.gov'})">NCBI Orthologs</a></div>
<div><a href="https://www.orthodb.org/?ncbi=100151683" class="mim-tip-hint" title="Hierarchical catalogue of orthologs." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'OrthoDB', 'domain': 'orthodb.org'})">OrthoDB</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>SNOMEDCT:</strong> 254102008, 721975004, 773404000<br />
">ICD+</a>
</div>
<div>
<span class="h3">
<span class="mim-font mim-tip-hint" title="Gene description">
<span class="text-danger"><strong>*</strong></span>
601428
</span>
</span>
</div>
</div>
<div>
<a id="preferredTitle" class="mim-anchor"></a>
<h3>
<span class="mim-font">
RNA, U4ATAC SMALL NUCLEAR; RNU4ATAC
</span>
</h3>
</div>
<div>
<br />
</div>
<div>
<a id="alternativeTitles" class="mim-anchor"></a>
<div>
<p>
<span class="mim-font">
<em>Alternative titles; symbols</em>
</span>
</p>
</div>
<div>
<h4>
<span class="mim-font">
RNA, U4, SMALL NUCLEAR, AT-AC FORM; U4ATAC
</span>
</h4>
</div>
</div>
<div>
<br />
</div>
</div>
<div>
<a id="approvedGeneSymbols" class="mim-anchor"></a>
<p>
<span class="mim-text-font">
<strong><em>HGNC Approved Gene Symbol: <a href="https://www.genenames.org/tools/search/#!/genes?query=RNU4ATAC" class="mim-tip-hint" title="HUGO Gene Nomenclature Committee." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'HGNC', 'domain': 'genenames.org'})">RNU4ATAC</a></em></strong>
</span>
</p>
</div>
<div>
<a id="cytogeneticLocation" class="mim-anchor"></a>
<p>
<span class="mim-text-font">
<strong>
<em>
Cytogenetic location: <a href="/geneMap/2/613?start=-3&limit=10&highlight=613">2q14.2</a>
&nbsp;
Genomic coordinates <span class="small">(GRCh38)</span> : <a href="https://genome.ucsc.edu/cgi-bin/hgTracks?db=hg38&position=chr2:121530880-121531009&dgv=pack&knownGene=pack&omimGene=pack" class="mim-tip-hint" title="UCSC Genome Browser; reference sequences and working draft assemblies for a large collection of genomes." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'UCSC Genome Browser', 'domain': 'genome.ucsc.edu'})">2:121,530,880-121,531,009</a> </span>
</em>
</strong>
<a href="https://www.ncbi.nlm.nih.gov/" target="_blank" class="small"> (from NCBI) </a>
</span>
</p>
</div>
<div>
<br />
</div>
<div>
<a id="geneMap" class="mim-anchor"></a>
<div style="margin-bottom: 10px;">
<span class="h4 mim-font">
<strong>Gene-Phenotype Relationships</strong>
</span>
</div>
<div>
<table class="table table-bordered table-condensed table-hover small mim-table-padding">
<thead>
<tr class="active">
<th>
Location
</th>
<th>
Phenotype
<span class="hidden-sm hidden-xs pull-right">
<a href="/clinicalSynopsis/table?mimNumber=226960,210710,616651" class="label label-warning" onclick="gtag('event', 'mim_link', {'source': 'Entry', 'destination': 'clinicalSynopsisTable'})">
View Clinical Synopses
</a>
</span>
</th>
<th>
Phenotype <br /> MIM number
</th>
<th>
Inheritance
</th>
<th>
Phenotype <br /> mapping key
</th>
</tr>
</thead>
<tbody>
<tr>
<td rowspan="3">
<span class="mim-font">
<a href="/geneMap/2/613?start=-3&limit=10&highlight=613">
2q14.2
</a>
</span>
</td>
<td>
<span class="mim-font">
Lowry-Wood syndrome
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/226960"> 226960 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal recessive">AR</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>
</tr>
<tr>
<td>
<span class="mim-font">
Microcephalic osteodysplastic primordial dwarfism, type I
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/210710"> 210710 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal recessive">AR</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>
</tr>
<tr>
<td>
<span class="mim-font">
Roifman syndrome
</span>
</td>
<td>
<span class="mim-font">
<a href="/entry/616651"> 616651 </a>
</span>
</td>
<td>
<span class="mim-font">
<abbr class="mim-tip-hint" title="Autosomal recessive">AR</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>
</tr>
</tbody>
</table>
</div>
</div>
<div>
<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>
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<ul class="dropdown-menu" style="width: 17em;">
<li><a href="/graph/linear/601428" target="_blank" onclick="gtag('event', 'mim_graph', {'destination': 'Linear'})"> Linear </a></li>
<li><a href="/graph/radial/601428" target="_blank" onclick="gtag('event', 'mim_graph', {'destination': 'Radial'})"> Radial </a></li>
</ul>
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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>
<div>
<p />
</div>
</div>
<div>
<br />
</div>
<div>
<a id="text" class="mim-anchor"></a>
<h4>
<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>
<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>The small nuclear RNA (snRNA) U4atac is a component of the minor spliceosome and is required for the proper excision of the U12 (RNU12; <a href="/entry/620204">620204</a>)-dependent class of introns (summary by <a href="#7" class="mim-tip-reference" title="He, H., Liyanarachchi, S., Akagi, K., Nagy, R., Li, J., Dietrich, R. C., Li, W., Sebastian, N., Wen, B., Xin, B., Singh, J., Yan, P., and 10 others. &lt;strong&gt;Mutations in U4atac snRNA, a component of the minor spliceosome, in the developmental disorder MOPD I.&lt;/strong&gt; Science 332: 238-240, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474760/&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;21474760&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=21474760[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/10.1126/science.1200587&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="21474760">He et al., 2011</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474760" 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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<br />
</div>
</div>
<div>
<a id="cloning" class="mim-anchor"></a>
<h4 href="#mimCloningFold" id="mimCloningToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
<span id="mimCloningToggleTriangle" class="small mimTextToggleTriangle">&#9660;</span>
<span class="mim-font">
<strong>Cloning and Expression</strong>
</span>
</h4>
</div>
<div id="mimCloningFold" class="collapse in mimTextToggleFold">
<span class="mim-text-font">
<p><a href="#15" class="mim-tip-reference" title="Tarn, W.-Y., Steitz, J. A. &lt;strong&gt;Highly diverged U4 and U6 small nuclear RNAs required for splicing rare AT-AC introns.&lt;/strong&gt; Science 273: 1824-1832, 1996.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/8791582/&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;8791582&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.273.5283.1824&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="8791582">Tarn and Steitz (1996)</a> reviewed the processing of eukaryotic precursor mRNA and noted that the majority of precursor mRNA introns contain sequences at their 5-prime and 3-prime splice sites that conform to the GU-AG consensus. They noted further that excision of these introns occurs in a large dynamic complex, the spliceosome, which is composed of U1, U2, U4-U6, and U5 small nuclear ribonucleoproteins (snRNPs) and a number of non-snRNP protein factors. The removal of a rare class of mRNA introns with AU-AC at their termini is catalyzed by a spliceosome that contains U11, U12, and U5 small nuclear ribonucleoproteins. <a href="#15" class="mim-tip-reference" title="Tarn, W.-Y., Steitz, J. A. &lt;strong&gt;Highly diverged U4 and U6 small nuclear RNAs required for splicing rare AT-AC introns.&lt;/strong&gt; Science 273: 1824-1832, 1996.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/8791582/&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;8791582&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.273.5283.1824&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="8791582">Tarn and Steitz (1996)</a> reported the isolation of 2 previously unidentified low-abundance human small nuclear RNAs (snRNAs), designated U4atac and U6atac (<a href="/entry/601429">601429</a>) by them, which are associated with the AT-AC spliceosome and are necessary for AT-AC intron splicing. U4atac exhibits only 40% sequence similarity with human U4 snRNA. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=8791582" 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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<a id="geneFunction" class="mim-anchor"></a>
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<strong>Gene Function</strong>
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<p><a href="#4" class="mim-tip-reference" title="Edery, P., Marcaillou, C., Sahbatou, M., Labalme, A., Chastang, J., Touraine, R., Tubacher, E., Senni, F., Bober, M. B., Nampoothiri, S., Jouk, P.-S., Steichen, E., Berland, S., Toutain, A., Wise, C. A., Sanlaville, D., Rousseau, F., Clerget-Darpoux, F., Leutenegger, A.-L. &lt;strong&gt;Association of TALS developmental disorder with defect in minor splicing component U4atac snRNA.&lt;/strong&gt; Science 332: 240-243, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474761/&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;21474761&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1202205&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="21474761">Edery et al. (2011)</a> summarized the structure and function of the minor, or U12-dependent, spliceosome. The U12-dependent spliceosome is a ribonucleoprotein complex comprising U11 (see <a href="/entry/610750">610750</a>), U12, U4atac, U5 (see <a href="/entry/603892">603892</a>), and U6atac snRNAs. It is both structurally and functionally related to the U1 (see <a href="/entry/180740">180740</a>), U2 (see <a href="/entry/180690">180690</a>), U4, U5, and U6 (see <a href="/entry/180692">180692</a>) snRNAs of the major U2-dependent spliceosome. The human genome contains approximately 700 U12-type introns removed by the minor spliceosome (<a href="#9" class="mim-tip-reference" title="Levine, A., Durbin, R. &lt;strong&gt;A computational scan for U12-dependent introns in the human genome sequence.&lt;/strong&gt; Nucleic Acids Res. 29: 4006-4013, 2001.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/11574683/&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;11574683&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=11574683[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/nar/29.19.4006&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="11574683">Levine and Durbin, 2001</a>; <a href="#2" class="mim-tip-reference" title="Alioto, T. S. &lt;strong&gt;U12DB: a database of orthologous U12-type spliceosomal introns.&lt;/strong&gt; Nucleic Acids Res. 35: D110-D115, 2007.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/17082203/&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;17082203&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=17082203[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/nar/gkl796&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="17082203">Alioto, 2007</a>). U12-type introns are characterized by their consensus splice recognition sequences, combining a nearly invariant 5-prime splice site, either GTATCCT or ATATCCT, and a highly conserved branch site (<a href="#13" class="mim-tip-reference" title="Sharp, P. A., Burge, C. B. &lt;strong&gt;Classification of introns: U2-type or U12-type.&lt;/strong&gt; Cell 91: 875-879, 1997.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/9428511/&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;9428511&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/s0092-8674(00)80479-1&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="9428511">Sharp and Burge, 1997</a>). Most genes containing U12-type introns are either involved in key cellular functions such as DNA replication and repair, transcription, RNA processing and transport, translation, and cytoskeletal organization, or belong to a group of cellular ion channels. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=17082203+11574683+9428511+21474761" 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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<a id="mapping" class="mim-anchor"></a>
<h4 href="#mimMappingFold" id="mimMappingToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
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<span class="mim-font">
<strong>Mapping</strong>
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<span class="mim-text-font">
<p>The RNU4ATAC gene is located in intron 2 of the CLASP1 gene (<a href="/entry/605852">605852</a>) on chromosome 2q14.2 (<a href="#7" class="mim-tip-reference" title="He, H., Liyanarachchi, S., Akagi, K., Nagy, R., Li, J., Dietrich, R. C., Li, W., Sebastian, N., Wen, B., Xin, B., Singh, J., Yan, P., and 10 others. &lt;strong&gt;Mutations in U4atac snRNA, a component of the minor spliceosome, in the developmental disorder MOPD I.&lt;/strong&gt; Science 332: 238-240, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474760/&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;21474760&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=21474760[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/10.1126/science.1200587&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="21474760">He et al., 2011</a>, <a href="#4" class="mim-tip-reference" title="Edery, P., Marcaillou, C., Sahbatou, M., Labalme, A., Chastang, J., Touraine, R., Tubacher, E., Senni, F., Bober, M. B., Nampoothiri, S., Jouk, P.-S., Steichen, E., Berland, S., Toutain, A., Wise, C. A., Sanlaville, D., Rousseau, F., Clerget-Darpoux, F., Leutenegger, A.-L. &lt;strong&gt;Association of TALS developmental disorder with defect in minor splicing component U4atac snRNA.&lt;/strong&gt; Science 332: 240-243, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474761/&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;21474761&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1202205&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="21474761">Edery et al., 2011</a>), -682 bp to -556 bp upstream of exon 3 (<a href="#4" class="mim-tip-reference" title="Edery, P., Marcaillou, C., Sahbatou, M., Labalme, A., Chastang, J., Touraine, R., Tubacher, E., Senni, F., Bober, M. B., Nampoothiri, S., Jouk, P.-S., Steichen, E., Berland, S., Toutain, A., Wise, C. A., Sanlaville, D., Rousseau, F., Clerget-Darpoux, F., Leutenegger, A.-L. &lt;strong&gt;Association of TALS developmental disorder with defect in minor splicing component U4atac snRNA.&lt;/strong&gt; Science 332: 240-243, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474761/&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;21474761&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1202205&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="21474761">Edery et al., 2011</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?term=21474761+21474760" 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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<div>
<a id="molecularGenetics" class="mim-anchor"></a>
<h4 href="#mimMolecularGeneticsFold" id="mimMolecularGeneticsToggle" class="mimTriangleToggle" style="cursor: pointer;" data-toggle="collapse">
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<strong>Molecular Genetics</strong>
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<p><strong><em>Microcephalic Osteodysplastic Primordial Dwarfism Type I</em></strong></p><p>
<a href="#7" class="mim-tip-reference" title="He, H., Liyanarachchi, S., Akagi, K., Nagy, R., Li, J., Dietrich, R. C., Li, W., Sebastian, N., Wen, B., Xin, B., Singh, J., Yan, P., and 10 others. &lt;strong&gt;Mutations in U4atac snRNA, a component of the minor spliceosome, in the developmental disorder MOPD I.&lt;/strong&gt; Science 332: 238-240, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474760/&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;21474760&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=21474760[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/10.1126/science.1200587&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="21474760">He et al. (2011)</a> identified 4 different mutations in the RNU4ATAC gene (<a href="#0001">601428.0001</a>-<a href="#0004">601428.0004</a>) resulting in microcephalic osteodysplastic primordial dwarfism type I (MOPD1; <a href="/entry/210710">210710</a>) in the Ohio Amish population, 2 German families, and 1 Australian family of Maltese descent. Functional assays showed that these mutations caused defective U12-dependent splicing. Endogenous U12-dependent but not U2-dependent introns were found to be poorly spliced in MOPD1 patient fibroblast cells. The introduction of wildtype U4atac snRNA into MOPD1 cells enhanced U12-dependent splicing. Using an in vivo splicing assay, <a href="#7" class="mim-tip-reference" title="He, H., Liyanarachchi, S., Akagi, K., Nagy, R., Li, J., Dietrich, R. C., Li, W., Sebastian, N., Wen, B., Xin, B., Singh, J., Yan, P., and 10 others. &lt;strong&gt;Mutations in U4atac snRNA, a component of the minor spliceosome, in the developmental disorder MOPD I.&lt;/strong&gt; Science 332: 238-240, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474760/&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;21474760&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=21474760[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/10.1126/science.1200587&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="21474760">He et al. (2011)</a> showed that each mutant U4atac snRNA reduced U12-dependent splicing activity by greater than 90% compared to wildtype U4atac. The splicing defect of the genomic 51G-A mutation (<a href="#0001">601428.0001</a>) could be corrected by complementation, suggesting that MOPD1 mutation abrogates U4atac snRNA function by disrupting the RNA secondary structure. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474760" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#4" class="mim-tip-reference" title="Edery, P., Marcaillou, C., Sahbatou, M., Labalme, A., Chastang, J., Touraine, R., Tubacher, E., Senni, F., Bober, M. B., Nampoothiri, S., Jouk, P.-S., Steichen, E., Berland, S., Toutain, A., Wise, C. A., Sanlaville, D., Rousseau, F., Clerget-Darpoux, F., Leutenegger, A.-L. &lt;strong&gt;Association of TALS developmental disorder with defect in minor splicing component U4atac snRNA.&lt;/strong&gt; Science 332: 240-243, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474761/&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;21474761&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1202205&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="21474761">Edery et al. (2011)</a> independently identified 4 mutations in the RNU4ATAC gene (<a href="#0001">601428.0001</a> and <a href="#0005">601428.0005</a>-<a href="#0007">601428.0007</a>) responsible for MOPD1. All mutations occurred in the 5-prime stem loop structure and affected the function of the minor spliceosome. <a href="#4" class="mim-tip-reference" title="Edery, P., Marcaillou, C., Sahbatou, M., Labalme, A., Chastang, J., Touraine, R., Tubacher, E., Senni, F., Bober, M. B., Nampoothiri, S., Jouk, P.-S., Steichen, E., Berland, S., Toutain, A., Wise, C. A., Sanlaville, D., Rousseau, F., Clerget-Darpoux, F., Leutenegger, A.-L. &lt;strong&gt;Association of TALS developmental disorder with defect in minor splicing component U4atac snRNA.&lt;/strong&gt; Science 332: 240-243, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474761/&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;21474761&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1202205&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="21474761">Edery et al. (2011)</a> studied the effects of the homozygous recurrent 51G-A U4atac snRNA gene mutation on the expression of a subset of 23 genes spliced by the minor U12-dependent spliceosome and found reduced expression of several U12 genes, including DIAPH3 (<a href="/entry/614567">614567</a>), E2F2 (<a href="/entry/600426">600426</a>), GPAA1 (<a href="/entry/603048">603048</a>), and PHB2 (<a href="/entry/610704">610704</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474761" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#1" class="mim-tip-reference" title="Abdel-Salam, G. M. H., Abdel-Hamid, M. S., Issa, M., Magdy, A., El-Kotoury, A., Amr, K. &lt;strong&gt;Expanding the phenotypic and mutational spectrum in microcephalic osteodysplastic primordial dwarfism type I.&lt;/strong&gt; Am. J. Med. Genet. 158A: 1455-1461, 2012.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/22581640/&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;22581640&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.35356&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="22581640">Abdel-Salam et al. (2012)</a> reported 2 Yemeni sibs and an Egyptian boy with relatively mild MOPD1 phenotypes who were homozygous and compound heterozygous, respectively, for mutations in the RNU4ATAC gene (<a href="#0002">601428.0002</a> and <a href="#0008">601428.0008</a>-<a href="#0009">601428.0009</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=22581640" 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>Roifman Syndrome</em></strong></p><p>
In 6 patients from 4 families with growth retardation, cognitive delay, spondyloepiphyseal dysplasia, and antibody deficiency (RFMN; <a href="/entry/616651">616651</a>), <a href="#11" class="mim-tip-reference" title="Merico, D., Roifman, M., Braunschweig, U., Yuen, R. K. C., Alexandrova, R., Bates, A., Reid, B., Nalpathamkalam, T., Wang, Z., Thiruvahindrapuram, B., Gray, P., Kakakios, A., and 9 others. &lt;strong&gt;Compound heterozygous mutations in the noncoding RNU4ATAC cause Roifman syndrome by disrupting minor intron splicing.&lt;/strong&gt; Nature Commun. 6: 8718, 2015. Note: Electronic Article.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/26522830/&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;26522830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=26522830[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/10.1038/ncomms9718&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="26522830">Merico et al. (2015)</a> identified compound heterozygosity for mutations in the RNU4ATAC gene (<a href="#0001">601428.0001</a> and <a href="#0010">601428.0010</a>-<a href="#0015">601428.0015</a>). <a href="#11" class="mim-tip-reference" title="Merico, D., Roifman, M., Braunschweig, U., Yuen, R. K. C., Alexandrova, R., Bates, A., Reid, B., Nalpathamkalam, T., Wang, Z., Thiruvahindrapuram, B., Gray, P., Kakakios, A., and 9 others. &lt;strong&gt;Compound heterozygous mutations in the noncoding RNU4ATAC cause Roifman syndrome by disrupting minor intron splicing.&lt;/strong&gt; Nature Commun. 6: 8718, 2015. Note: Electronic Article.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/26522830/&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;26522830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=26522830[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/10.1038/ncomms9718&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="26522830">Merico et al. (2015)</a> noted that the patients each carried one variant overlapping MOPD1-implicated structural elements and another variant overlapping a highly conserved structural element not previously implicated in disease. RNA-seq analysis of 2 affected and 3 unaffected individuals revealed significantly higher minor intron retention in Roifman syndrome patients compared to controls, resulting in reduced levels of correctly spliced transcripts for minor intron genes; in addition, the transcriptional alterations were highly specific for minor introns. <a href="#11" class="mim-tip-reference" title="Merico, D., Roifman, M., Braunschweig, U., Yuen, R. K. C., Alexandrova, R., Bates, A., Reid, B., Nalpathamkalam, T., Wang, Z., Thiruvahindrapuram, B., Gray, P., Kakakios, A., and 9 others. &lt;strong&gt;Compound heterozygous mutations in the noncoding RNU4ATAC cause Roifman syndrome by disrupting minor intron splicing.&lt;/strong&gt; Nature Commun. 6: 8718, 2015. Note: Electronic Article.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/26522830/&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;26522830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=26522830[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/10.1038/ncomms9718&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="26522830">Merico et al. (2015)</a> noted that although Roifman syndrome and MOPD1 are extremely rare, allele frequency data suggested that recessive genetic disorders caused by RNU4ATAC rare variants might be more prevalent than had been reported. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=26522830" 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>Lowry-Wood Syndrome</em></strong></p><p>
In a 10.75-year-old girl with Lowry-Wood syndrome (LWS; <a href="/entry/226960">226960</a>), in whom previous exome sequencing had not been revealing, <a href="#5" class="mim-tip-reference" title="Farach, L. S., Little, M. E., Duker, A. L., Logan, C. V., Jackson, A., Hecht, J. T., Bober, M. &lt;strong&gt;The expanding phenotype of RNU4ATAC pathogenic variants to Lowry Wood syndrome.&lt;/strong&gt; Am. J. Med. Genet. 176A: 465-469, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/29265708/&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;29265708&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.38581&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="29265708">Farach et al. (2018)</a> sequenced the RNU4ATAC gene and identified compound heterozygosity for 2 mutations (<a href="#0001">601428.0001</a> and <a href="#0016">601428.0016</a>). In a similarly affected sister and brother, the authors identified compound heterozygosity for another 2 mutations in RNU4ATAC (<a href="#0004">601428.0004</a> and <a href="#0017">601428.0017</a>). <a href="#5" class="mim-tip-reference" title="Farach, L. S., Little, M. E., Duker, A. L., Logan, C. V., Jackson, A., Hecht, J. T., Bober, M. &lt;strong&gt;The expanding phenotype of RNU4ATAC pathogenic variants to Lowry Wood syndrome.&lt;/strong&gt; Am. J. Med. Genet. 176A: 465-469, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/29265708/&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;29265708&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.38581&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="29265708">Farach et al. (2018)</a> noted that MOPD1 and Roifman syndrome (RFMN; <a href="/entry/616651">616651</a>), which had been considered clinically distinct from LWS although the 3 disorders share overlapping features, are also caused by biallelic mutation in the RNU4ATAC gene. Because some patients may exhibit phenotypic overlap and not fit clearly into a particular diagnosis, the authors suggested that targeted RNU4ATAC sequencing should be considered in undiagnosed patients with any combination of epiphyseal dysplasia with intellectual disability, microcephaly, immunodeficiency, and/or retinal anomalies. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=29265708" 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>In a 19-year-old patient with LWS, <a href="#14" class="mim-tip-reference" title="Shelihan, I., Ehresmann, S., Magnani, C., Forzano, F., Baldo, C., Brunetti-Pierri, N., Campeau, P. M. &lt;strong&gt;Lowry-Wood syndrome: further evidence of association with RNU4ATAC, and correlation between genotype and phenotype.&lt;/strong&gt; Hum. Genet. 137: 905-909, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/30368667/&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;30368667&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/s00439-018-1950-8&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="30368667">Shelihan et al. (2018)</a> performed whole-exome sequencing (WES) that failed to reveal plausible candidate variants; however, following the report by <a href="#5" class="mim-tip-reference" title="Farach, L. S., Little, M. E., Duker, A. L., Logan, C. V., Jackson, A., Hecht, J. T., Bober, M. &lt;strong&gt;The expanding phenotype of RNU4ATAC pathogenic variants to Lowry Wood syndrome.&lt;/strong&gt; Am. J. Med. Genet. 176A: 465-469, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/29265708/&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;29265708&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.38581&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="29265708">Farach et al. (2018)</a>, reanalysis of the WES data identified compound heterozygosity for pathogenic variants in the RNU4ATAC gene (<a href="#0018">601428.0018</a> and <a href="#0019">601428.0019</a>). In a 28-year-old man with LWS, in whom WES was initially unfruitful, reanalysis also revealed variants in RNU4ATAC (<a href="#0020">601428.0020</a> and <a href="#0021">601428.0021</a>). <a href="#14" class="mim-tip-reference" title="Shelihan, I., Ehresmann, S., Magnani, C., Forzano, F., Baldo, C., Brunetti-Pierri, N., Campeau, P. M. &lt;strong&gt;Lowry-Wood syndrome: further evidence of association with RNU4ATAC, and correlation between genotype and phenotype.&lt;/strong&gt; Hum. Genet. 137: 905-909, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/30368667/&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;30368667&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/s00439-018-1950-8&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="30368667">Shelihan et al. (2018)</a> noted that predicted 'fitness consequence' scores of reported RNU4ATAC variants appeared to correlate with the clinical severity of the associated disease. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=30368667+29265708" 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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<a id="allelicVariants" class="mim-anchor"></a>
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<strong>ALLELIC VARIANTS (<a href="/help/faq#1_4"></strong>
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<strong>21 Selected Examples</a>):</strong>
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<a href="/allelicVariants/601428" class="btn btn-default" role="button"> Table View </a>
&nbsp;&nbsp;<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=601428[MIM]" class="btn btn-default mim-tip-hint" role="button" title="ClinVar aggregates information about sequence variation and its relationship to human health." target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">ClinVar</a>
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<strong>.0001&nbsp;MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
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ROIFMAN SYNDROME, INCLUDED<br />
LOWRY-WOOD SYNDROME, INCLUDED
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RNU4ATAC, 51G-A (<a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs188343279;toggle_HGVS_names=open" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'dbSNP\', \'domain\': \'ensembl.org\'})">rs188343279</a>)
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs188343279 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs188343279;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs188343279?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs188343279" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs188343279" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000023096 OR RCV000202312 OR RCV001255662 OR RCV001596939 OR RCV002482901 OR RCV003415730" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000023096, RCV000202312, RCV001255662, RCV001596939, RCV002482901, RCV003415730" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000023096...</a>
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<p><strong><em>Microcephalic Osteodysplastic Primordial Dwarfism</em></strong></p><p>
In 7 Amish patients with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; <a href="/entry/210710">210710</a>), <a href="#7" class="mim-tip-reference" title="He, H., Liyanarachchi, S., Akagi, K., Nagy, R., Li, J., Dietrich, R. C., Li, W., Sebastian, N., Wen, B., Xin, B., Singh, J., Yan, P., and 10 others. &lt;strong&gt;Mutations in U4atac snRNA, a component of the minor spliceosome, in the developmental disorder MOPD I.&lt;/strong&gt; Science 332: 238-240, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474760/&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;21474760&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=21474760[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/10.1126/science.1200587&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="21474760">He et al. (2011)</a> found homozygosity for a genomic 51G-A variant within the nonprotein-coding RNU4ATAC gene. All parents were heterozygous. Haplotype analysis demonstrated that the 51G-A mutation represents a founder event in the Amish. This mutation was also found in homozygosity in an Australian patient of Maltese descent. This mutation is located within an important structural feature known as the 5-prime stem loop and was predicted to disrupt the snRNA secondary structure and cause defects in the minor spliceosome. This mutation reduced U12-dependent splicing activity by 90% relative to wildtype. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474760" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p><p><a href="#4" class="mim-tip-reference" title="Edery, P., Marcaillou, C., Sahbatou, M., Labalme, A., Chastang, J., Touraine, R., Tubacher, E., Senni, F., Bober, M. B., Nampoothiri, S., Jouk, P.-S., Steichen, E., Berland, S., Toutain, A., Wise, C. A., Sanlaville, D., Rousseau, F., Clerget-Darpoux, F., Leutenegger, A.-L. &lt;strong&gt;Association of TALS developmental disorder with defect in minor splicing component U4atac snRNA.&lt;/strong&gt; Science 332: 240-243, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474761/&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;21474761&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1202205&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="21474761">Edery et al. (2011)</a> identified the 51G-A mutation in RNU4ATAC in homozygosity in affected members from 4 consanguineous families from the Mediterranean basin and in an Indian individual whose parents were not known to be related. Additionally, 3 unrelated patients from nonconsanguineous families carried the mutation in compound heterozygosity (see <a href="#0005">601428.0005</a> and <a href="#0006">601428.0006</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474761" 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>Roifman Syndrome</em></strong></p><p>
In a Lebanese sister and brother with Roifman syndrome (RFMN; <a href="/entry/616651">616651</a>) originally reported by <a href="#6" class="mim-tip-reference" title="Gray, P. E. A., Sillence, D., Kakakios, A. &lt;strong&gt;Is Roifman syndrome an X-linked ciliopathy with humoral immunodeficiency? Evidence from 2 new cases.&lt;/strong&gt; Int. J. Immunogenet. 38: 501-505, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21977988/&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;21977988&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1111/j.1744-313X.2011.01041.x&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="21977988">Gray et al. (2011)</a>, <a href="#11" class="mim-tip-reference" title="Merico, D., Roifman, M., Braunschweig, U., Yuen, R. K. C., Alexandrova, R., Bates, A., Reid, B., Nalpathamkalam, T., Wang, Z., Thiruvahindrapuram, B., Gray, P., Kakakios, A., and 9 others. &lt;strong&gt;Compound heterozygous mutations in the noncoding RNU4ATAC cause Roifman syndrome by disrupting minor intron splicing.&lt;/strong&gt; Nature Commun. 6: 8718, 2015. Note: Electronic Article.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/26522830/&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;26522830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=26522830[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/10.1038/ncomms9718&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="26522830">Merico et al. (2015)</a> identified compound heterozygosity for the 51G-A transition in the RNU4ATAC gene (GenBank <a href="https://www.ncbi.nlm.nih.gov/search/all/?term=NR_023343" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'GENBANK\', \'domain\': \'ncbi.nlm.nih.gov\'})">NR_023343</a>) and a 16G-A transition (<a href="#0010">601428.0010</a>), both of which involve highly conserved nucleotides in the 5-prime stem-loop critical region and the stem II region, respectively. Their unaffected parents were each heterozygous for 1 of the variants. Neither variant was found in the Complete Genomics database, but the 51G-A variant was present at a frequency of 0.0014 in the 1000 Genomes Project database and the 16G-A variant was present at a frequency of 0.0008 in the Wellderly study database. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=21977988+26522830" 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>Lowry-Wood Syndrome</em></strong></p><p>
In a 10.75-year-old girl (patient 1) with Lowry-Wood syndrome (LWS; <a href="/entry/226960">226960</a>), <a href="#5" class="mim-tip-reference" title="Farach, L. S., Little, M. E., Duker, A. L., Logan, C. V., Jackson, A., Hecht, J. T., Bober, M. &lt;strong&gt;The expanding phenotype of RNU4ATAC pathogenic variants to Lowry Wood syndrome.&lt;/strong&gt; Am. J. Med. Genet. 176A: 465-469, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/29265708/&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;29265708&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.38581&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="29265708">Farach et al. (2018)</a> identified compound heterozygosity for the r.51G-A transition (r.51G-A, NR_023343.1) in the RNU4ATAC gene, and an r.5A-C transversion (<a href="#0016">601428.0016</a>) within the stem II region. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=29265708" 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>.0002&nbsp;MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
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RNU4ATAC, 55G-A
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs575472572 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs575472572;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs575472572?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs575472572" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs575472572" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000023097 OR RCV001852008 OR RCV002490406" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000023097, RCV001852008, RCV002490406" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000023097...</a>
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<p>In a reportedly nonconsanguineous German family with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; <a href="/entry/210710">210710</a>), <a href="#7" class="mim-tip-reference" title="He, H., Liyanarachchi, S., Akagi, K., Nagy, R., Li, J., Dietrich, R. C., Li, W., Sebastian, N., Wen, B., Xin, B., Singh, J., Yan, P., and 10 others. &lt;strong&gt;Mutations in U4atac snRNA, a component of the minor spliceosome, in the developmental disorder MOPD I.&lt;/strong&gt; Science 332: 238-240, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474760/&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;21474760&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=21474760[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/10.1126/science.1200587&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="21474760">He et al. (2011)</a> found homozygosity for a genomic 55G-A mutation in the RNU4ATAC gene. This mutation was predicted to disrupt the 5-prime stem loop of this snRNA secondary structure and cause defects in the minor spliceosome. This mutation reduced U12-dependent splicing activity by 90% relative to wildtype. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474760" 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>In a brother and sister with MOPD1, born of double consanguineous first-cousin parents, <a href="#1" class="mim-tip-reference" title="Abdel-Salam, G. M. H., Abdel-Hamid, M. S., Issa, M., Magdy, A., El-Kotoury, A., Amr, K. &lt;strong&gt;Expanding the phenotypic and mutational spectrum in microcephalic osteodysplastic primordial dwarfism type I.&lt;/strong&gt; Am. J. Med. Genet. 158A: 1455-1461, 2012.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/22581640/&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;22581640&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.35356&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="22581640">Abdel-Salam et al. (2012)</a> identified homozygosity for the genomic 55G-A mutation in the RNU4ATAC gene. The authors noted that the sibs had a relatively mild MOPD1 phenotype, with developmental milestones only mildly delayed for age; however, both developed high fever and convulsions and died of encephalitis at 18 months and 34 months of age. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=22581640" 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>.0003&nbsp;MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
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RNU4ATAC, 30G-A
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs374299350 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs374299350;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs374299350?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs374299350" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs374299350" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000023098 OR RCV000778072 OR RCV001852009" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000023098, RCV000778072, RCV001852009" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000023098...</a>
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<p>In a German patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; <a href="/entry/210710">210710</a>) from a nonconsanguineous union, <a href="#7" class="mim-tip-reference" title="He, H., Liyanarachchi, S., Akagi, K., Nagy, R., Li, J., Dietrich, R. C., Li, W., Sebastian, N., Wen, B., Xin, B., Singh, J., Yan, P., and 10 others. &lt;strong&gt;Mutations in U4atac snRNA, a component of the minor spliceosome, in the developmental disorder MOPD I.&lt;/strong&gt; Science 332: 238-240, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474760/&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;21474760&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=21474760[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/10.1126/science.1200587&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="21474760">He et al. (2011)</a> identified compound heterozygosity for a genomic 30G-A mutation in the RNU4ATAC gene and a 111G-A mutation (<a href="#0004">601428.0004</a>). These mutations were predicted to disrupt the 3-prime stem loop and to interfere with the secondary structure of this snRNA and cause defects in the minor spliceosome. These mutations reduced U12-dependent splicing activity by 90% relative to wildtype. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474760" 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>.0004&nbsp;MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
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LOWRY-WOOD SYNDROME, INCLUDED
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RNU4ATAC, 111G-A
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs763500364 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs763500364;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs763500364?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs763500364" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs763500364" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000023099 OR RCV001255663 OR RCV001852010" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000023099, RCV001255663, RCV001852010" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000023099...</a>
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<p><strong><em>Microcephalic Osteodysplastic Primordial Dwarfism, Type I</em></strong></p><p>
In a German patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; <a href="/entry/210710">210710</a>) from a nonconsanguineous family, <a href="#7" class="mim-tip-reference" title="He, H., Liyanarachchi, S., Akagi, K., Nagy, R., Li, J., Dietrich, R. C., Li, W., Sebastian, N., Wen, B., Xin, B., Singh, J., Yan, P., and 10 others. &lt;strong&gt;Mutations in U4atac snRNA, a component of the minor spliceosome, in the developmental disorder MOPD I.&lt;/strong&gt; Science 332: 238-240, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474760/&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;21474760&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=21474760[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/10.1126/science.1200587&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="21474760">He et al. (2011)</a> identified compound heterozygosity for a genomic 111G-A mutation in the RNU4ATAC gene in conjunction with a 30G-A mutation (<a href="#0003">601428.0003</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474760" 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>Lowry-Wood Syndrome</em></strong></p><p>
In a 14-year-old boy (patient 2) and his 15-year-old sister (patient 3) with Lowry-Wood syndrome (LWS; <a href="/entry/226960">226960</a>), <a href="#5" class="mim-tip-reference" title="Farach, L. S., Little, M. E., Duker, A. L., Logan, C. V., Jackson, A., Hecht, J. T., Bober, M. &lt;strong&gt;The expanding phenotype of RNU4ATAC pathogenic variants to Lowry Wood syndrome.&lt;/strong&gt; Am. J. Med. Genet. 176A: 465-469, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/29265708/&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;29265708&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.38581&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="29265708">Farach et al. (2018)</a> identified compound heterozygosity for the r.111G-A transition (r.111G-A, NR_023343.1) in the RNU4ATAC gene, and an r.46G-A transition (<a href="#0017">601428.0017</a>). <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=29265708" 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>.0005&nbsp;MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
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RNU4ATAC, 50G-C
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs181195449 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs181195449;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs181195449?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs181195449" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs181195449" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000023100 OR RCV003556072" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000023100, RCV003556072" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000023100...</a>
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<p>In a patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; <a href="/entry/210710">210710</a>) born to unrelated Caucasian parents from North America, <a href="#4" class="mim-tip-reference" title="Edery, P., Marcaillou, C., Sahbatou, M., Labalme, A., Chastang, J., Touraine, R., Tubacher, E., Senni, F., Bober, M. B., Nampoothiri, S., Jouk, P.-S., Steichen, E., Berland, S., Toutain, A., Wise, C. A., Sanlaville, D., Rousseau, F., Clerget-Darpoux, F., Leutenegger, A.-L. &lt;strong&gt;Association of TALS developmental disorder with defect in minor splicing component U4atac snRNA.&lt;/strong&gt; Science 332: 240-243, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474761/&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;21474761&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1202205&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="21474761">Edery et al. (2011)</a> identified compound heterozygosity for the common g.51G-A mutation in RNU4ATAC (<a href="#0001">601428.0001</a>) and a g.50G-C mutation, both in the 5-prime stem loop. This patient had severe intrauterine growth retardation. Brain anomalies included agenesis of the corpus callosum, polymicrogyria, poorly developed ventricular frontal horns and lobes, and a large extra-axial fluid collection in the frontal region. Hydrocephalus developed and shunting was required. The patient died at 6 months of age. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474761" 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>.0006&nbsp;MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
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RNU4ATAC, 53C-G
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs180755563 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs180755563;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs180755563?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs180755563" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs180755563" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000023101 OR RCV001852011 OR RCV004786280" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000023101, RCV001852011, RCV004786280" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000023101...</a>
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<p>In a patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; <a href="/entry/210710">210710</a>) born to unrelated Norwegian parents, <a href="#4" class="mim-tip-reference" title="Edery, P., Marcaillou, C., Sahbatou, M., Labalme, A., Chastang, J., Touraine, R., Tubacher, E., Senni, F., Bober, M. B., Nampoothiri, S., Jouk, P.-S., Steichen, E., Berland, S., Toutain, A., Wise, C. A., Sanlaville, D., Rousseau, F., Clerget-Darpoux, F., Leutenegger, A.-L. &lt;strong&gt;Association of TALS developmental disorder with defect in minor splicing component U4atac snRNA.&lt;/strong&gt; Science 332: 240-243, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474761/&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;21474761&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1202205&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="21474761">Edery et al. (2011)</a> identified compound heterozygosity for the common g.51G-A mutation in RNU4ATAC (<a href="#0001">601428.0001</a>) and a g.53C-G mutation, both in the 5-prime stem loop. The patient had brain cysts, dysmorphic features, and bone films consistent with MOPD1. The pregnancy was terminated at 16 weeks' gestation. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474761" 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>.0007&nbsp;MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
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RNU4ATAC, 50G-A
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs181195449 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs181195449;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs181195449?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs181195449" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs181195449" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000023102 OR RCV001596940 OR RCV003225025" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000023102, RCV001596940, RCV003225025" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000023102...</a>
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<p>In a patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; <a href="/entry/210710">210710</a>) born to unrelated Caucasian parents from North America, <a href="#4" class="mim-tip-reference" title="Edery, P., Marcaillou, C., Sahbatou, M., Labalme, A., Chastang, J., Touraine, R., Tubacher, E., Senni, F., Bober, M. B., Nampoothiri, S., Jouk, P.-S., Steichen, E., Berland, S., Toutain, A., Wise, C. A., Sanlaville, D., Rousseau, F., Clerget-Darpoux, F., Leutenegger, A.-L. &lt;strong&gt;Association of TALS developmental disorder with defect in minor splicing component U4atac snRNA.&lt;/strong&gt; Science 332: 240-243, 2011.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/21474761/&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;21474761&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1126/science.1202205&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="21474761">Edery et al. (2011)</a> detected compound heterozygosity for the common 51G-A mutation in RNU4ATAC (<a href="#0001">601428.0001</a>) and a G-to-A transition at genomic position 50 (50G-A). The patient had intrauterine growth retardation and microcephaly as well as agenesis of corpus callosum, polymicrogyria, poorly developed ventricular frontal horns and lobes, and a large extra-axial fluid collection in the frontal region. The patient also had hypertension and presented several fractures. He died at 6 months of age. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474761" 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>.0008&nbsp;MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
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RNU4ATAC, 66G-C
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs377619732 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs377619732;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs377619732?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs377619732" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs377619732" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000032637 OR RCV001852656" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000032637, RCV001852656" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000032637...</a>
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<p>In an Egyptian boy with a relatively mild microcephalic osteodysplastic primordial dwarfism type I phenotype (MOPD1; <a href="/entry/210710">210710</a>), <a href="#1" class="mim-tip-reference" title="Abdel-Salam, G. M. H., Abdel-Hamid, M. S., Issa, M., Magdy, A., El-Kotoury, A., Amr, K. &lt;strong&gt;Expanding the phenotypic and mutational spectrum in microcephalic osteodysplastic primordial dwarfism type I.&lt;/strong&gt; Am. J. Med. Genet. 158A: 1455-1461, 2012.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/22581640/&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;22581640&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.35356&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="22581640">Abdel-Salam et al. (2012)</a> identified compound heterozygosity for mutations in the RNU4ATAC gene: a g.66G-C transversion and a g.124G-A transition (<a href="#0009">601428.0009</a>). At 20 months of age, the patient's developmental milestones were only mildly delayed, with normal tone and reflexes on neurologic evaluation. He had no history of repeated infections, eczema, or seizures. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=22581640" 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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<a id="0009" class="mim-anchor"></a>
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<strong>.0009&nbsp;MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
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RNU4ATAC, 124G-A
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs544312701 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs544312701;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs544312701?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs544312701" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs544312701" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000032638 OR RCV002251939 OR RCV002514136" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000032638, RCV002251939, RCV002514136" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000032638...</a>
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<p>For discussion of the g.124G-A transition in the RNU4ATAC gene that was found in compound heterozygous state in a patient with relatively mild microcephalic osteodysplastic primordial dwarfism type I (MOPD1; <a href="/entry/210710">210710</a>) by <a href="#1" class="mim-tip-reference" title="Abdel-Salam, G. M. H., Abdel-Hamid, M. S., Issa, M., Magdy, A., El-Kotoury, A., Amr, K. &lt;strong&gt;Expanding the phenotypic and mutational spectrum in microcephalic osteodysplastic primordial dwarfism type I.&lt;/strong&gt; Am. J. Med. Genet. 158A: 1455-1461, 2012.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/22581640/&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;22581640&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.35356&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="22581640">Abdel-Salam et al. (2012)</a>, see <a href="#0008">601428.0008</a>. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=22581640" 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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<a id="0010" class="mim-anchor"></a>
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<strong>.0010&nbsp;ROIFMAN SYNDROME</strong>
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RNU4ATAC, 16G-A
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs750325275 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs750325275;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs750325275?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs750325275" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs750325275" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
<span class="mim-text-font">
<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000202313 OR RCV001596985 OR RCV002494514" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000202313, RCV001596985, RCV002494514" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000202313...</a>
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<p>For discussion of the 16G-A transition in the RNU4ATAC gene (GenBank <a href="https://www.ncbi.nlm.nih.gov/search/all/?term=NR_023343" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'GENBANK\', \'domain\': \'ncbi.nlm.nih.gov\'})">NR_023343</a>) that was found in compound heterozygous state in a Lebanese sister and brother with Roifman syndrome (RFMN; <a href="/entry/616651">616651</a>) by <a href="#11" class="mim-tip-reference" title="Merico, D., Roifman, M., Braunschweig, U., Yuen, R. K. C., Alexandrova, R., Bates, A., Reid, B., Nalpathamkalam, T., Wang, Z., Thiruvahindrapuram, B., Gray, P., Kakakios, A., and 9 others. &lt;strong&gt;Compound heterozygous mutations in the noncoding RNU4ATAC cause Roifman syndrome by disrupting minor intron splicing.&lt;/strong&gt; Nature Commun. 6: 8718, 2015. Note: Electronic Article.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/26522830/&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;26522830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=26522830[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/10.1038/ncomms9718&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="26522830">Merico et al. (2015)</a>, see <a href="#0001">601428.0001</a>. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=26522830" 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>.0011&nbsp;ROIFMAN SYNDROME</strong>
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RNU4ATAC, 13C-T
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs559979281 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs559979281;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs559979281?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs559979281" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs559979281" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000202315 OR RCV000788934 OR RCV002478721 OR RCV004754354" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000202315, RCV000788934, RCV002478721, RCV004754354" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000202315...</a>
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<p>In 2 brothers of Irish descent with Roifman syndrome (RFMN; <a href="/entry/616651">616651</a>), previously reported by <a href="#12" class="mim-tip-reference" title="Roifman, C. M. &lt;strong&gt;Antibody deficiency, growth retardation, spondyloepiphyseal dysplasia and retinal dystrophy: a novel syndrome.&lt;/strong&gt; Clin. Genet. 55: 103-109, 1999.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/10189087/&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;10189087&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1034/j.1399-0004.1999.550206.x&quot; target=&quot;_blank&quot; onclick=&quot;gtag(&#x27;event&#x27;, &#x27;mim_outbound&#x27;, {&#x27;destination&#x27;: &#x27;Publisher&#x27;})&quot;&gt;Full Text&lt;/a&gt;]" pmid="10189087">Roifman (1999)</a>, <a href="#11" class="mim-tip-reference" title="Merico, D., Roifman, M., Braunschweig, U., Yuen, R. K. C., Alexandrova, R., Bates, A., Reid, B., Nalpathamkalam, T., Wang, Z., Thiruvahindrapuram, B., Gray, P., Kakakios, A., and 9 others. &lt;strong&gt;Compound heterozygous mutations in the noncoding RNU4ATAC cause Roifman syndrome by disrupting minor intron splicing.&lt;/strong&gt; Nature Commun. 6: 8718, 2015. Note: Electronic Article.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/26522830/&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;26522830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=26522830[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/10.1038/ncomms9718&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="26522830">Merico et al. (2015)</a> identified compound heterozygosity for a 13C-T transition and a 37G-A transition in the RNU4ATAC gene (GenBank <a href="https://www.ncbi.nlm.nih.gov/search/all/?term=NR_023343" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'GENBANK\', \'domain\': \'ncbi.nlm.nih.gov\'})">NR_023343</a>), both of which involve highly conserved nucleotides in stem II region and the 5-prime stem-loop critical region, respectively. In an Italian man with Roifman syndrome, the 13C-T variant was present in compound heterozygosity with a 48G-A transition (<a href="#0013">601428.0013</a>) that also involves a highly conserved nucleotide in the stem II region. The unaffected parents in both families were each heterozygous for 1 of the variants. None of the variants was found in the 1000 Genomes Project or Complete Genomics databases, but the 13C-T variant was present at a frequency of 0.0008 in the Wellderly study database. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=26522830+10189087" 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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<a id="0012" class="mim-anchor"></a>
<h4>
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<strong>.0012&nbsp;ROIFMAN SYNDROME</strong>
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RNU4ATAC, 37G-A
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs756026847 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs756026847;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs756026847?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs756026847" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs756026847" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000202311 OR RCV001255784 OR RCV001377935 OR RCV001775101 OR RCV002503794 OR RCV003401092" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000202311, RCV001255784, RCV001377935, RCV001775101, RCV002503794, RCV003401092" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000202311...</a>
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<p>For discussion of the 37G-A transition in the RNU4ATAC gene (GenBank <a href="https://www.ncbi.nlm.nih.gov/search/all/?term=NR_023343" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'GENBANK\', \'domain\': \'ncbi.nlm.nih.gov\'})">NR_023343</a>) that was found in compound heterozygous state in 2 brothers with Roifman syndrome (RFMN; <a href="/entry/616651">616651</a>) by <a href="#11" class="mim-tip-reference" title="Merico, D., Roifman, M., Braunschweig, U., Yuen, R. K. C., Alexandrova, R., Bates, A., Reid, B., Nalpathamkalam, T., Wang, Z., Thiruvahindrapuram, B., Gray, P., Kakakios, A., and 9 others. &lt;strong&gt;Compound heterozygous mutations in the noncoding RNU4ATAC cause Roifman syndrome by disrupting minor intron splicing.&lt;/strong&gt; Nature Commun. 6: 8718, 2015. Note: Electronic Article.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/26522830/&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;26522830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=26522830[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/10.1038/ncomms9718&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="26522830">Merico et al. (2015)</a>, see <a href="#0011">601428.0011</a>. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=26522830" 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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<a id="0013" class="mim-anchor"></a>
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<strong>.0013&nbsp;ROIFMAN SYNDROME</strong>
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RNU4ATAC, 48G-A
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs863225422 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs863225422;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs863225422?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs863225422" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs863225422" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000202314 OR RCV001095783 OR RCV001255778 OR RCV001268112 OR RCV002500634 OR RCV003989502" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000202314, RCV001095783, RCV001255778, RCV001268112, RCV002500634, RCV003989502" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000202314...</a>
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<p>For discussion of the 48G-A transition in the RNU4ATAC gene (GenBank <a href="https://www.ncbi.nlm.nih.gov/search/all/?term=NR_023343" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'GENBANK\', \'domain\': \'ncbi.nlm.nih.gov\'})">NR_023343</a>) that was found in compound heterozygous state in an Italian man with Roifman syndrome (RFMN; <a href="/entry/616651">616651</a>) by <a href="#11" class="mim-tip-reference" title="Merico, D., Roifman, M., Braunschweig, U., Yuen, R. K. C., Alexandrova, R., Bates, A., Reid, B., Nalpathamkalam, T., Wang, Z., Thiruvahindrapuram, B., Gray, P., Kakakios, A., and 9 others. &lt;strong&gt;Compound heterozygous mutations in the noncoding RNU4ATAC cause Roifman syndrome by disrupting minor intron splicing.&lt;/strong&gt; Nature Commun. 6: 8718, 2015. Note: Electronic Article.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/26522830/&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;26522830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=26522830[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/10.1038/ncomms9718&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="26522830">Merico et al. (2015)</a>, see <a href="#0011">601428.0011</a>. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=26522830" 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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<a id="0014" class="mim-anchor"></a>
<h4>
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<strong>.0014&nbsp;ROIFMAN SYNDROME</strong>
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RNU4ATAC, 8C-T (<a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs370715569;toggle_HGVS_names=open" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'dbSNP\', \'domain\': \'ensembl.org\'})">rs370715569</a>)
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs370715569 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs370715569;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs370715569?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs370715569" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs370715569" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000202309 OR RCV001323592 OR RCV001775102 OR RCV002243882 OR RCV002271461 OR RCV003401093" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000202309, RCV001323592, RCV001775102, RCV002243882, RCV002271461, RCV003401093" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000202309...</a>
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<p>In a 4-year-old Albanian boy with Roifman syndrome (RFMN; <a href="/entry/616651">616651</a>), <a href="#11" class="mim-tip-reference" title="Merico, D., Roifman, M., Braunschweig, U., Yuen, R. K. C., Alexandrova, R., Bates, A., Reid, B., Nalpathamkalam, T., Wang, Z., Thiruvahindrapuram, B., Gray, P., Kakakios, A., and 9 others. &lt;strong&gt;Compound heterozygous mutations in the noncoding RNU4ATAC cause Roifman syndrome by disrupting minor intron splicing.&lt;/strong&gt; Nature Commun. 6: 8718, 2015. Note: Electronic Article.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/26522830/&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;26522830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=26522830[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/10.1038/ncomms9718&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="26522830">Merico et al. (2015)</a> identified compound heterozygosity for an 8C-T transition and a 118T-C transition in the RNU4ATAC gene (GenBank <a href="https://www.ncbi.nlm.nih.gov/search/all/?term=NR_023343" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'GENBANK\', \'domain\': \'ncbi.nlm.nih.gov\'})">NR_023343</a>), both of which involve highly conserved nucleotides in the stem II region and the Sm protein-binding site, respectively. His unaffected parents were each heterozygous for 1 of the variants, neither of which was found in the 1000 Genomes Project or Wellderly study databases; however, the 8C-T variant was present at a frequency of 0.0011 in the Complete Genomics database. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=26522830" 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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<a id="0015" class="mim-anchor"></a>
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<strong>.0015&nbsp;ROIFMAN SYNDROME</strong>
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RNU4ATAC, 118T-C
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs863225423 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs863225423;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs863225423?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs863225423" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs863225423" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000202310 OR RCV001090269 OR RCV003165482" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000202310, RCV001090269, RCV003165482" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000202310...</a>
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<p>For discussion of the 118T-C transition in the RNU4ATAC gene (GenBank <a href="https://www.ncbi.nlm.nih.gov/search/all/?term=NR_023343" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'GENBANK\', \'domain\': \'ncbi.nlm.nih.gov\'})">NR_023343</a>) that was found in compound heterozygous state in an Albanian boy with Roifman syndrome (RFMN; <a href="/entry/616651">616651</a>) by <a href="#11" class="mim-tip-reference" title="Merico, D., Roifman, M., Braunschweig, U., Yuen, R. K. C., Alexandrova, R., Bates, A., Reid, B., Nalpathamkalam, T., Wang, Z., Thiruvahindrapuram, B., Gray, P., Kakakios, A., and 9 others. &lt;strong&gt;Compound heterozygous mutations in the noncoding RNU4ATAC cause Roifman syndrome by disrupting minor intron splicing.&lt;/strong&gt; Nature Commun. 6: 8718, 2015. Note: Electronic Article.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/26522830/&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;26522830&lt;/a&gt;, &lt;a href=&quot;https://www.ncbi.nlm.nih.gov/pmc/?term=26522830[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/10.1038/ncomms9718&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="26522830">Merico et al. (2015)</a>, see <a href="#0014">601428.0014</a>. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=26522830" 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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<a id="0016" class="mim-anchor"></a>
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<strong>.0016&nbsp;LOWRY-WOOD SYNDROME</strong>
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RNU4ATAC, 5A-C
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs533487249 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs533487249;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs533487249?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs533487249" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs533487249" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV001200132 OR RCV001255656" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV001200132, RCV001255656" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV001200132...</a>
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<p>For discussion of the r.5A-C transversion (r.5A-C, NR_023343.1) in the RNU4ATAC gene, that was found in compound heterozygous state in a 10.75-year-old girl (patient 1) with Lowry-Wood syndrome (LWS; <a href="/entry/226960">226960</a>) by <a href="#5" class="mim-tip-reference" title="Farach, L. S., Little, M. E., Duker, A. L., Logan, C. V., Jackson, A., Hecht, J. T., Bober, M. &lt;strong&gt;The expanding phenotype of RNU4ATAC pathogenic variants to Lowry Wood syndrome.&lt;/strong&gt; Am. J. Med. Genet. 176A: 465-469, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/29265708/&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;29265708&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.38581&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="29265708">Farach et al. (2018)</a>, see <a href="#0001">601428.0001</a>. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=29265708" 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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<a id="0017" class="mim-anchor"></a>
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<strong>.0017&nbsp;LOWRY-WOOD SYNDROME</strong>
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RNU4ATAC, 46G-A
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs1032667950 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs1032667950;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs1032667950?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs1032667950" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs1032667950" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000788935 OR RCV001003896 OR RCV001255657" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000788935, RCV001003896, RCV001255657" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000788935...</a>
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<p>For discussion of the r.46G-A transition (r.46G-A, NR_023343.1) in the RNU4ATAC gene, that was found in compound heterozygous state in a 14-year-old boy (patient 2) and his 15-year-old sister (patient 3) with Lowry-Wood syndrome (LWS; <a href="/entry/226960">226960</a>) by <a href="#5" class="mim-tip-reference" title="Farach, L. S., Little, M. E., Duker, A. L., Logan, C. V., Jackson, A., Hecht, J. T., Bober, M. &lt;strong&gt;The expanding phenotype of RNU4ATAC pathogenic variants to Lowry Wood syndrome.&lt;/strong&gt; Am. J. Med. Genet. 176A: 465-469, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/29265708/&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;29265708&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.38581&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="29265708">Farach et al. (2018)</a>, see <a href="#0004">601428.0004</a>. <a href="#5" class="mim-tip-reference" title="Farach, L. S., Little, M. E., Duker, A. L., Logan, C. V., Jackson, A., Hecht, J. T., Bober, M. &lt;strong&gt;The expanding phenotype of RNU4ATAC pathogenic variants to Lowry Wood syndrome.&lt;/strong&gt; Am. J. Med. Genet. 176A: 465-469, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/29265708/&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;29265708&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.38581&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="29265708">Farach et al. (2018)</a> noted that the r.46G-A variant had previously been reported in a patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; <a href="/entry/210710">210710</a>) by <a href="#8" class="mim-tip-reference" title="Kilic, E., Yigit, G., Utine, G. E., Wollnik, B., Mihci, E., Nur, B. G., Boduroglu, K. &lt;strong&gt;A novel mutation in RNU4ATAC in a patient with microcephalic osteodysplastic primordial dwarfism type I.&lt;/strong&gt; Am. J. Med. Genet. 167A: 919-921, 2015.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/25735804/&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;25735804&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.36955&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="25735804">Kilic et al. (2015)</a>. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=25735804+29265708" 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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<a id="0018" class="mim-anchor"></a>
<h4>
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<strong>.0018&nbsp;LOWRY-WOOD SYNDROME</strong>
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RNU4ATAC, 53C-T
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&nbsp;&nbsp;
<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs180755563 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs180755563;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs180755563?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs180755563" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs180755563" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000853318 OR RCV001255772 OR RCV001317115" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000853318, RCV001255772, RCV001317115" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000853318...</a>
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<p>In a 19-year-old patient (patient 1) with Lowry-Wood syndrome (LWS; <a href="/entry/226960">226960</a>), who was originally described by <a href="#3" class="mim-tip-reference" title="Brunetti-Pierri, N., De Brasi, D., Ikegawa, S., Camera, G., Andria, G., Sebastio, G. &lt;strong&gt;A new patient with Lowry-Wood syndrome with mild phenotype.&lt;/strong&gt; Am. J. Med. Genet. 118A: 68-70, 2003.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/12605445/&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;12605445&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.20008&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="12605445">Brunetti-Pierri et al. (2003)</a>, <a href="#14" class="mim-tip-reference" title="Shelihan, I., Ehresmann, S., Magnani, C., Forzano, F., Baldo, C., Brunetti-Pierri, N., Campeau, P. M. &lt;strong&gt;Lowry-Wood syndrome: further evidence of association with RNU4ATAC, and correlation between genotype and phenotype.&lt;/strong&gt; Hum. Genet. 137: 905-909, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/30368667/&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;30368667&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/s00439-018-1950-8&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="30368667">Shelihan et al. (2018)</a> identified compound heterozygosity for an r.53C-T transition (r.53C-T, NR_023343.1) in the RNU4ATAC gene, and an r.8C-A transversion (<a href="#0019">601428.0019</a>), located in the stem II and 5' stem-loop critical regions, respectively. The proband's unaffected parents were each heterozygous for 1 of the mutations. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=30368667+12605445" 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>.0019&nbsp;LOWRY-WOOD SYNDROME</strong>
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RNU4ATAC, 8C-A
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs370715569 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs370715569;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs370715569?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs370715569" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs370715569" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
<span class="mim-text-font">
<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV000853317" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV000853317" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV000853317</a>
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<p>For discussion of the r.8C-A transversion (r.8C-A, NR_023343.1) in the RNU4ATAC gene, that was found in compound heterozygous state in a 19-year-old patient (patient 1) with Lowry-Wood syndrome (LWS; <a href="/entry/226960">226960</a>) by <a href="#14" class="mim-tip-reference" title="Shelihan, I., Ehresmann, S., Magnani, C., Forzano, F., Baldo, C., Brunetti-Pierri, N., Campeau, P. M. &lt;strong&gt;Lowry-Wood syndrome: further evidence of association with RNU4ATAC, and correlation between genotype and phenotype.&lt;/strong&gt; Hum. Genet. 137: 905-909, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/30368667/&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;30368667&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/s00439-018-1950-8&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="30368667">Shelihan et al. (2018)</a>, see <a href="#0018">601428.0018</a>. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=30368667" 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>.0020&nbsp;LOWRY-WOOD SYNDROME</strong>
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RNU4ATAC, 120T-G
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown">rs1281131043 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs1281131043;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs1281131043" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs1281131043" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
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<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV001255660" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV001255660" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV001255660</a>
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<p>In a 28-year-old man (patient 2) with Lowry-Wood syndrome (LWS; <a href="/entry/226960">226960</a>), who was originally described by <a href="#10" class="mim-tip-reference" title="Magnani, C., Tedesco, S. A., Dallaglio, S., Sommi, M., Bacchini, E., Vetro, A., Zuffardi, O., Bevilacqua, G. &lt;strong&gt;Multiple joint dislocations: an additional skeletal finding in Lowry-Wood syndrome?&lt;/strong&gt; Am. J. Med. Genet. 149A: 737-741, 2009.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/19288552/&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;19288552&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1002/ajmg.a.32773&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="19288552">Magnani et al. (2009)</a>, <a href="#14" class="mim-tip-reference" title="Shelihan, I., Ehresmann, S., Magnani, C., Forzano, F., Baldo, C., Brunetti-Pierri, N., Campeau, P. M. &lt;strong&gt;Lowry-Wood syndrome: further evidence of association with RNU4ATAC, and correlation between genotype and phenotype.&lt;/strong&gt; Hum. Genet. 137: 905-909, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/30368667/&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;30368667&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/s00439-018-1950-8&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="30368667">Shelihan et al. (2018)</a> identified compound heterozygosity for an r.120T-G transversion (r.120T-G, NR_023343.1) in the critical Sm protein-binding site of the RNU4ATAC gene, and an r.114G-C transversion (<a href="#0021">601428.0021</a>) at a highly conserved position in the 3-prime stem-loop. His unaffected father was heterozygous for the r.120T-G variant; maternal DNA was unavailable for analysis. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=19288552+30368667" 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>.0021&nbsp;LOWRY-WOOD SYNDROME</strong>
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RNU4ATAC, 114G-C
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<div class="btn-group"> <button type="button" class="btn btn-default btn-xs dropdown-toggle mim-font" data-toggle="dropdown"><span class="text-primary">&#x25cf;</span> rs558667045 <span class="caret"></span></button> <ul class="dropdown-menu"> <li><a href="https://www.ensembl.org/Homo_sapiens/Variation/Summary?v=rs558667045;toggle_HGVS_names=open" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'ensembl.org'})">Ensembl</a></li> <li><a href="https://gnomad.broadinstitute.org/variant/rs558667045?dataset=gnomad_r2_1" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'gnomad.broadinstitute.org'})" style="padding-left: 8px;"><span class="text-primary">&#x25cf;</span> gnomAD</a></li> <li><a href="https://www.ncbi.nlm.nih.gov/snp/?term=rs558667045" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'www.ncbi.nlm.nih.gov'})">NCBI</a></li> <li><a href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&clinvar=pack&omimAvSnp=pack&position=rs558667045" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'dbSNP', 'domain': 'genome.ucsc.edu'})">UCSC</a></li> </ul> </div>
<span class="mim-text-font">
<a href="https://www.ncbi.nlm.nih.gov/clinvar?term=RCV001255661" target="_blank" class="btn btn-default btn-xs mim-tip-hint" title="RCV001255661" onclick="gtag('event', 'mim_outbound', {'name': 'ClinVar', 'domain': 'ncbi.nlm.nih.gov'})">RCV001255661</a>
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<p>For discussion of the r.114G-C transversion (r.114G-C, NR_023343.1) in the RNU4ATAC gene, that was found in compound heterozygous state in a 28-year-old man (patient 2) with Lowry-Wood syndrome (LWS; <a href="/entry/226960">226960</a>) by <a href="#14" class="mim-tip-reference" title="Shelihan, I., Ehresmann, S., Magnani, C., Forzano, F., Baldo, C., Brunetti-Pierri, N., Campeau, P. M. &lt;strong&gt;Lowry-Wood syndrome: further evidence of association with RNU4ATAC, and correlation between genotype and phenotype.&lt;/strong&gt; Hum. Genet. 137: 905-909, 2018.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/30368667/&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;30368667&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/s00439-018-1950-8&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="30368667">Shelihan et al. (2018)</a>, see <a href="#0020">601428.0020</a>. <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=30368667" 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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<div id="mimReferencesFold" class="collapse in mimTextToggleFold">
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<a id="1" class="mim-anchor"></a>
<a id="Abdel-Salam2012" class="mim-anchor"></a>
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<p class="mim-text-font">
Abdel-Salam, G. M. H., Abdel-Hamid, M. S., Issa, M., Magdy, A., El-Kotoury, A., Amr, K.
<strong>Expanding the phenotypic and mutational spectrum in microcephalic osteodysplastic primordial dwarfism type I.</strong>
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[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/22581640/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">22581640</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=22581640" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1002/ajmg.a.35356" target="_blank">Full Text</a>]
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<a id="2" class="mim-anchor"></a>
<a id="Alioto2007" class="mim-anchor"></a>
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Alioto, T. S.
<strong>U12DB: a database of orthologous U12-type spliceosomal introns.</strong>
Nucleic Acids Res. 35: D110-D115, 2007.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/17082203/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">17082203</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=17082203[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=17082203" 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/nar/gkl796" target="_blank">Full Text</a>]
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<a id="Brunetti-Pierri2003" class="mim-anchor"></a>
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Brunetti-Pierri, N., De Brasi, D., Ikegawa, S., Camera, G., Andria, G., Sebastio, G.
<strong>A new patient with Lowry-Wood syndrome with mild phenotype.</strong>
Am. J. Med. Genet. 118A: 68-70, 2003.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/12605445/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">12605445</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=12605445" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1002/ajmg.a.20008" target="_blank">Full Text</a>]
</p>
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<a id="Edery2011" class="mim-anchor"></a>
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Edery, P., Marcaillou, C., Sahbatou, M., Labalme, A., Chastang, J., Touraine, R., Tubacher, E., Senni, F., Bober, M. B., Nampoothiri, S., Jouk, P.-S., Steichen, E., Berland, S., Toutain, A., Wise, C. A., Sanlaville, D., Rousseau, F., Clerget-Darpoux, F., Leutenegger, A.-L.
<strong>Association of TALS developmental disorder with defect in minor splicing component U4atac snRNA.</strong>
Science 332: 240-243, 2011.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/21474761/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">21474761</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21474761" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1126/science.1202205" target="_blank">Full Text</a>]
</p>
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<a id="Farach2018" class="mim-anchor"></a>
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Farach, L. S., Little, M. E., Duker, A. L., Logan, C. V., Jackson, A., Hecht, J. T., Bober, M.
<strong>The expanding phenotype of RNU4ATAC pathogenic variants to Lowry Wood syndrome.</strong>
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[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/29265708/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">29265708</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=29265708" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1002/ajmg.a.38581" target="_blank">Full Text</a>]
</p>
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<a id="Gray2011" class="mim-anchor"></a>
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Gray, P. E. A., Sillence, D., Kakakios, A.
<strong>Is Roifman syndrome an X-linked ciliopathy with humoral immunodeficiency? Evidence from 2 new cases.</strong>
Int. J. Immunogenet. 38: 501-505, 2011.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/21977988/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">21977988</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=21977988" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1111/j.1744-313X.2011.01041.x" target="_blank">Full Text</a>]
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<a id="He2011" class="mim-anchor"></a>
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He, H., Liyanarachchi, S., Akagi, K., Nagy, R., Li, J., Dietrich, R. C., Li, W., Sebastian, N., Wen, B., Xin, B., Singh, J., Yan, P., and 10 others.
<strong>Mutations in U4atac snRNA, a component of the minor spliceosome, in the developmental disorder MOPD I.</strong>
Science 332: 238-240, 2011.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/21474760/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">21474760</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=21474760[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=21474760" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1126/science.1200587" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="8" class="mim-anchor"></a>
<a id="Kilic2015" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Kilic, E., Yigit, G., Utine, G. E., Wollnik, B., Mihci, E., Nur, B. G., Boduroglu, K.
<strong>A novel mutation in RNU4ATAC in a patient with microcephalic osteodysplastic primordial dwarfism type I.</strong>
Am. J. Med. Genet. 167A: 919-921, 2015.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/25735804/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">25735804</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=25735804" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1002/ajmg.a.36955" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="9" class="mim-anchor"></a>
<a id="Levine2001" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Levine, A., Durbin, R.
<strong>A computational scan for U12-dependent introns in the human genome sequence.</strong>
Nucleic Acids Res. 29: 4006-4013, 2001.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/11574683/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">11574683</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=11574683[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=11574683" 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/nar/29.19.4006" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="10" class="mim-anchor"></a>
<a id="Magnani2009" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Magnani, C., Tedesco, S. A., Dallaglio, S., Sommi, M., Bacchini, E., Vetro, A., Zuffardi, O., Bevilacqua, G.
<strong>Multiple joint dislocations: an additional skeletal finding in Lowry-Wood syndrome?</strong>
Am. J. Med. Genet. 149A: 737-741, 2009.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/19288552/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">19288552</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=19288552" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1002/ajmg.a.32773" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="11" class="mim-anchor"></a>
<a id="Merico2015" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Merico, D., Roifman, M., Braunschweig, U., Yuen, R. K. C., Alexandrova, R., Bates, A., Reid, B., Nalpathamkalam, T., Wang, Z., Thiruvahindrapuram, B., Gray, P., Kakakios, A., and 9 others.
<strong>Compound heterozygous mutations in the noncoding RNU4ATAC cause Roifman syndrome by disrupting minor intron splicing.</strong>
Nature Commun. 6: 8718, 2015. Note: Electronic Article.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/26522830/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">26522830</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/?term=26522830[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=26522830" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1038/ncomms9718" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="12" class="mim-anchor"></a>
<a id="Roifman1999" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Roifman, C. M.
<strong>Antibody deficiency, growth retardation, spondyloepiphyseal dysplasia and retinal dystrophy: a novel syndrome.</strong>
Clin. Genet. 55: 103-109, 1999.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/10189087/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">10189087</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=10189087" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1034/j.1399-0004.1999.550206.x" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="13" class="mim-anchor"></a>
<a id="Sharp1997" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Sharp, P. A., Burge, C. B.
<strong>Classification of introns: U2-type or U12-type.</strong>
Cell 91: 875-879, 1997.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/9428511/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">9428511</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=9428511" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1016/s0092-8674(00)80479-1" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="14" class="mim-anchor"></a>
<a id="Shelihan2018" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Shelihan, I., Ehresmann, S., Magnani, C., Forzano, F., Baldo, C., Brunetti-Pierri, N., Campeau, P. M.
<strong>Lowry-Wood syndrome: further evidence of association with RNU4ATAC, and correlation between genotype and phenotype.</strong>
Hum. Genet. 137: 905-909, 2018.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/30368667/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">30368667</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=30368667" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1007/s00439-018-1950-8" target="_blank">Full Text</a>]
</p>
</div>
</li>
<li>
<a id="15" class="mim-anchor"></a>
<a id="Tarn1996" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Tarn, W.-Y., Steitz, J. A.
<strong>Highly diverged U4 and U6 small nuclear RNAs required for splicing rare AT-AC introns.</strong>
Science 273: 1824-1832, 1996.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/8791582/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">8791582</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=8791582" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
[<a href="https://doi.org/10.1126/science.273.5283.1824" target="_blank">Full Text</a>]
</p>
</div>
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</ol>
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</div>
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<div>
<a id="contributors" class="mim-anchor"></a>
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</span>
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<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
Marla J. F. O'Neill - updated : 09/11/2020
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<div class="col-lg-offset-2 col-md-offset-4 col-sm-offset-4 col-xs-offset-2 col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
Marla J. F. O'Neill - updated : 11/19/2015<br>Marla J. F. O'Neill - updated : 11/2/2012<br>Ada Hamosh - updated : 4/22/2011
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<div>
<a id="creationDate" class="mim-anchor"></a>
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Creation Date:
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<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
Moyra Smith : 9/26/1996
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mgross : 01/17/2023
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carol : 09/12/2020<br>carol : 09/12/2020<br>alopez : 09/11/2020<br>carol : 04/28/2017<br>alopez : 03/09/2016<br>alopez : 11/19/2015<br>alopez : 4/30/2015<br>mcolton : 4/17/2015<br>carol : 1/7/2013<br>carol : 11/2/2012<br>terry : 11/2/2012<br>mgross : 4/12/2012<br>alopez : 5/12/2011<br>terry : 5/10/2011<br>alopez : 4/27/2011<br>alopez : 4/26/2011<br>alopez : 4/26/2011<br>terry : 4/22/2011<br>mark : 11/12/1996<br>mark : 9/26/1996
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<h3>
<span class="mim-font">
<strong>*</strong> 601428
</span>
</h3>
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<div>
<h3>
<span class="mim-font">
RNA, U4ATAC SMALL NUCLEAR; RNU4ATAC
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<div>
<br />
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<div>
<div >
<p>
<span class="mim-font">
<em>Alternative titles; symbols</em>
</span>
</p>
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<div>
<h4>
<span class="mim-font">
RNA, U4, SMALL NUCLEAR, AT-AC FORM; U4ATAC
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<span class="mim-text-font">
<strong><em>HGNC Approved Gene Symbol: RNU4ATAC</em></strong>
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<div>
<p>
<span class="mim-text-font">
<strong>SNOMEDCT:</strong> 254102008, 721975004, 773404000; &nbsp;
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<p>
<span class="mim-text-font">
<strong>
<em>
Cytogenetic location: 2q14.2
&nbsp;
Genomic coordinates <span class="small">(GRCh38)</span> : 2:121,530,880-121,531,009 </span>
</em>
</strong>
<span class="small">(from NCBI)</span>
</span>
</p>
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<div>
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<h4>
<span class="mim-font">
<strong>Gene-Phenotype Relationships</strong>
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<div>
<table class="table table-bordered table-condensed small mim-table-padding">
<thead>
<tr class="active">
<th>
Location
</th>
<th>
Phenotype
</th>
<th>
Phenotype <br /> MIM number
</th>
<th>
Inheritance
</th>
<th>
Phenotype <br /> mapping key
</th>
</tr>
</thead>
<tbody>
<tr>
<td rowspan="3">
<span class="mim-font">
2q14.2
</span>
</td>
<td>
<span class="mim-font">
Lowry-Wood syndrome
</span>
</td>
<td>
<span class="mim-font">
226960
</span>
</td>
<td>
<span class="mim-font">
Autosomal recessive
</span>
</td>
<td>
<span class="mim-font">
3
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
Microcephalic osteodysplastic primordial dwarfism, type I
</span>
</td>
<td>
<span class="mim-font">
210710
</span>
</td>
<td>
<span class="mim-font">
Autosomal recessive
</span>
</td>
<td>
<span class="mim-font">
3
</span>
</td>
</tr>
<tr>
<td>
<span class="mim-font">
Roifman syndrome
</span>
</td>
<td>
<span class="mim-font">
616651
</span>
</td>
<td>
<span class="mim-font">
Autosomal recessive
</span>
</td>
<td>
<span class="mim-font">
3
</span>
</td>
</tr>
</tbody>
</table>
</div>
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<div>
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<h4>
<span class="mim-font">
<strong>TEXT</strong>
</span>
</h4>
<div>
<h4>
<span class="mim-font">
<strong>Description</strong>
</span>
</h4>
</div>
<span class="mim-text-font">
<p>The small nuclear RNA (snRNA) U4atac is a component of the minor spliceosome and is required for the proper excision of the U12 (RNU12; 620204)-dependent class of introns (summary by He et al., 2011). </p>
</span>
<div>
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<div>
<h4>
<span class="mim-font">
<strong>Cloning and Expression</strong>
</span>
</h4>
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<span class="mim-text-font">
<p>Tarn and Steitz (1996) reviewed the processing of eukaryotic precursor mRNA and noted that the majority of precursor mRNA introns contain sequences at their 5-prime and 3-prime splice sites that conform to the GU-AG consensus. They noted further that excision of these introns occurs in a large dynamic complex, the spliceosome, which is composed of U1, U2, U4-U6, and U5 small nuclear ribonucleoproteins (snRNPs) and a number of non-snRNP protein factors. The removal of a rare class of mRNA introns with AU-AC at their termini is catalyzed by a spliceosome that contains U11, U12, and U5 small nuclear ribonucleoproteins. Tarn and Steitz (1996) reported the isolation of 2 previously unidentified low-abundance human small nuclear RNAs (snRNAs), designated U4atac and U6atac (601429) by them, which are associated with the AT-AC spliceosome and are necessary for AT-AC intron splicing. U4atac exhibits only 40% sequence similarity with human U4 snRNA. </p>
</span>
<div>
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<h4>
<span class="mim-font">
<strong>Gene Function</strong>
</span>
</h4>
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<span class="mim-text-font">
<p>Edery et al. (2011) summarized the structure and function of the minor, or U12-dependent, spliceosome. The U12-dependent spliceosome is a ribonucleoprotein complex comprising U11 (see 610750), U12, U4atac, U5 (see 603892), and U6atac snRNAs. It is both structurally and functionally related to the U1 (see 180740), U2 (see 180690), U4, U5, and U6 (see 180692) snRNAs of the major U2-dependent spliceosome. The human genome contains approximately 700 U12-type introns removed by the minor spliceosome (Levine and Durbin, 2001; Alioto, 2007). U12-type introns are characterized by their consensus splice recognition sequences, combining a nearly invariant 5-prime splice site, either GTATCCT or ATATCCT, and a highly conserved branch site (Sharp and Burge, 1997). Most genes containing U12-type introns are either involved in key cellular functions such as DNA replication and repair, transcription, RNA processing and transport, translation, and cytoskeletal organization, or belong to a group of cellular ion channels. </p>
</span>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>Mapping</strong>
</span>
</h4>
</div>
<span class="mim-text-font">
<p>The RNU4ATAC gene is located in intron 2 of the CLASP1 gene (605852) on chromosome 2q14.2 (He et al., 2011, Edery et al., 2011), -682 bp to -556 bp upstream of exon 3 (Edery et al., 2011). </p>
</span>
<div>
<br />
</div>
<div>
<h4>
<span class="mim-font">
<strong>Molecular Genetics</strong>
</span>
</h4>
</div>
<span class="mim-text-font">
<p><strong><em>Microcephalic Osteodysplastic Primordial Dwarfism Type I</em></strong></p><p>
He et al. (2011) identified 4 different mutations in the RNU4ATAC gene (601428.0001-601428.0004) resulting in microcephalic osteodysplastic primordial dwarfism type I (MOPD1; 210710) in the Ohio Amish population, 2 German families, and 1 Australian family of Maltese descent. Functional assays showed that these mutations caused defective U12-dependent splicing. Endogenous U12-dependent but not U2-dependent introns were found to be poorly spliced in MOPD1 patient fibroblast cells. The introduction of wildtype U4atac snRNA into MOPD1 cells enhanced U12-dependent splicing. Using an in vivo splicing assay, He et al. (2011) showed that each mutant U4atac snRNA reduced U12-dependent splicing activity by greater than 90% compared to wildtype U4atac. The splicing defect of the genomic 51G-A mutation (601428.0001) could be corrected by complementation, suggesting that MOPD1 mutation abrogates U4atac snRNA function by disrupting the RNA secondary structure. </p><p>Edery et al. (2011) independently identified 4 mutations in the RNU4ATAC gene (601428.0001 and 601428.0005-601428.0007) responsible for MOPD1. All mutations occurred in the 5-prime stem loop structure and affected the function of the minor spliceosome. Edery et al. (2011) studied the effects of the homozygous recurrent 51G-A U4atac snRNA gene mutation on the expression of a subset of 23 genes spliced by the minor U12-dependent spliceosome and found reduced expression of several U12 genes, including DIAPH3 (614567), E2F2 (600426), GPAA1 (603048), and PHB2 (610704). </p><p>Abdel-Salam et al. (2012) reported 2 Yemeni sibs and an Egyptian boy with relatively mild MOPD1 phenotypes who were homozygous and compound heterozygous, respectively, for mutations in the RNU4ATAC gene (601428.0002 and 601428.0008-601428.0009). </p><p><strong><em>Roifman Syndrome</em></strong></p><p>
In 6 patients from 4 families with growth retardation, cognitive delay, spondyloepiphyseal dysplasia, and antibody deficiency (RFMN; 616651), Merico et al. (2015) identified compound heterozygosity for mutations in the RNU4ATAC gene (601428.0001 and 601428.0010-601428.0015). Merico et al. (2015) noted that the patients each carried one variant overlapping MOPD1-implicated structural elements and another variant overlapping a highly conserved structural element not previously implicated in disease. RNA-seq analysis of 2 affected and 3 unaffected individuals revealed significantly higher minor intron retention in Roifman syndrome patients compared to controls, resulting in reduced levels of correctly spliced transcripts for minor intron genes; in addition, the transcriptional alterations were highly specific for minor introns. Merico et al. (2015) noted that although Roifman syndrome and MOPD1 are extremely rare, allele frequency data suggested that recessive genetic disorders caused by RNU4ATAC rare variants might be more prevalent than had been reported. </p><p><strong><em>Lowry-Wood Syndrome</em></strong></p><p>
In a 10.75-year-old girl with Lowry-Wood syndrome (LWS; 226960), in whom previous exome sequencing had not been revealing, Farach et al. (2018) sequenced the RNU4ATAC gene and identified compound heterozygosity for 2 mutations (601428.0001 and 601428.0016). In a similarly affected sister and brother, the authors identified compound heterozygosity for another 2 mutations in RNU4ATAC (601428.0004 and 601428.0017). Farach et al. (2018) noted that MOPD1 and Roifman syndrome (RFMN; 616651), which had been considered clinically distinct from LWS although the 3 disorders share overlapping features, are also caused by biallelic mutation in the RNU4ATAC gene. Because some patients may exhibit phenotypic overlap and not fit clearly into a particular diagnosis, the authors suggested that targeted RNU4ATAC sequencing should be considered in undiagnosed patients with any combination of epiphyseal dysplasia with intellectual disability, microcephaly, immunodeficiency, and/or retinal anomalies. </p><p>In a 19-year-old patient with LWS, Shelihan et al. (2018) performed whole-exome sequencing (WES) that failed to reveal plausible candidate variants; however, following the report by Farach et al. (2018), reanalysis of the WES data identified compound heterozygosity for pathogenic variants in the RNU4ATAC gene (601428.0018 and 601428.0019). In a 28-year-old man with LWS, in whom WES was initially unfruitful, reanalysis also revealed variants in RNU4ATAC (601428.0020 and 601428.0021). Shelihan et al. (2018) noted that predicted 'fitness consequence' scores of reported RNU4ATAC variants appeared to correlate with the clinical severity of the associated disease. </p>
</span>
<div>
<br />
</div>
</div>
<div>
<h4>
<span class="mim-font">
<strong>ALLELIC VARIANTS</strong>
</span>
<strong>21 Selected Examples):</strong>
</span>
</h4>
<div>
<p />
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0001 &nbsp; MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
ROIFMAN SYNDROME, INCLUDED<br />
LOWRY-WOOD SYNDROME, INCLUDED
</span>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 51G-A ({dbSNP rs188343279})
<br />
SNP: rs188343279,
gnomAD: rs188343279,
ClinVar: RCV000023096, RCV000202312, RCV001255662, RCV001596939, RCV002482901, RCV003415730
</span>
</div>
<div>
<span class="mim-text-font">
<p />
<p><strong><em>Microcephalic Osteodysplastic Primordial Dwarfism</em></strong></p><p>
In 7 Amish patients with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; 210710), He et al. (2011) found homozygosity for a genomic 51G-A variant within the nonprotein-coding RNU4ATAC gene. All parents were heterozygous. Haplotype analysis demonstrated that the 51G-A mutation represents a founder event in the Amish. This mutation was also found in homozygosity in an Australian patient of Maltese descent. This mutation is located within an important structural feature known as the 5-prime stem loop and was predicted to disrupt the snRNA secondary structure and cause defects in the minor spliceosome. This mutation reduced U12-dependent splicing activity by 90% relative to wildtype. </p><p>Edery et al. (2011) identified the 51G-A mutation in RNU4ATAC in homozygosity in affected members from 4 consanguineous families from the Mediterranean basin and in an Indian individual whose parents were not known to be related. Additionally, 3 unrelated patients from nonconsanguineous families carried the mutation in compound heterozygosity (see 601428.0005 and 601428.0006). </p><p><strong><em>Roifman Syndrome</em></strong></p><p>
In a Lebanese sister and brother with Roifman syndrome (RFMN; 616651) originally reported by Gray et al. (2011), Merico et al. (2015) identified compound heterozygosity for the 51G-A transition in the RNU4ATAC gene (GenBank NR_023343) and a 16G-A transition (601428.0010), both of which involve highly conserved nucleotides in the 5-prime stem-loop critical region and the stem II region, respectively. Their unaffected parents were each heterozygous for 1 of the variants. Neither variant was found in the Complete Genomics database, but the 51G-A variant was present at a frequency of 0.0014 in the 1000 Genomes Project database and the 16G-A variant was present at a frequency of 0.0008 in the Wellderly study database. </p><p><strong><em>Lowry-Wood Syndrome</em></strong></p><p>
In a 10.75-year-old girl (patient 1) with Lowry-Wood syndrome (LWS; 226960), Farach et al. (2018) identified compound heterozygosity for the r.51G-A transition (r.51G-A, NR_023343.1) in the RNU4ATAC gene, and an r.5A-C transversion (601428.0016) within the stem II region. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0002 &nbsp; MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 55G-A
<br />
SNP: rs575472572,
gnomAD: rs575472572,
ClinVar: RCV000023097, RCV001852008, RCV002490406
</span>
</div>
<div>
<span class="mim-text-font">
<p>In a reportedly nonconsanguineous German family with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; 210710), He et al. (2011) found homozygosity for a genomic 55G-A mutation in the RNU4ATAC gene. This mutation was predicted to disrupt the 5-prime stem loop of this snRNA secondary structure and cause defects in the minor spliceosome. This mutation reduced U12-dependent splicing activity by 90% relative to wildtype. </p><p>In a brother and sister with MOPD1, born of double consanguineous first-cousin parents, Abdel-Salam et al. (2012) identified homozygosity for the genomic 55G-A mutation in the RNU4ATAC gene. The authors noted that the sibs had a relatively mild MOPD1 phenotype, with developmental milestones only mildly delayed for age; however, both developed high fever and convulsions and died of encephalitis at 18 months and 34 months of age. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0003 &nbsp; MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 30G-A
<br />
SNP: rs374299350,
gnomAD: rs374299350,
ClinVar: RCV000023098, RCV000778072, RCV001852009
</span>
</div>
<div>
<span class="mim-text-font">
<p>In a German patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; 210710) from a nonconsanguineous union, He et al. (2011) identified compound heterozygosity for a genomic 30G-A mutation in the RNU4ATAC gene and a 111G-A mutation (601428.0004). These mutations were predicted to disrupt the 3-prime stem loop and to interfere with the secondary structure of this snRNA and cause defects in the minor spliceosome. These mutations reduced U12-dependent splicing activity by 90% relative to wildtype. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0004 &nbsp; MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
LOWRY-WOOD SYNDROME, INCLUDED
</span>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 111G-A
<br />
SNP: rs763500364,
gnomAD: rs763500364,
ClinVar: RCV000023099, RCV001255663, RCV001852010
</span>
</div>
<div>
<span class="mim-text-font">
<p />
<p><strong><em>Microcephalic Osteodysplastic Primordial Dwarfism, Type I</em></strong></p><p>
In a German patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; 210710) from a nonconsanguineous family, He et al. (2011) identified compound heterozygosity for a genomic 111G-A mutation in the RNU4ATAC gene in conjunction with a 30G-A mutation (601428.0003). </p><p><strong><em>Lowry-Wood Syndrome</em></strong></p><p>
In a 14-year-old boy (patient 2) and his 15-year-old sister (patient 3) with Lowry-Wood syndrome (LWS; 226960), Farach et al. (2018) identified compound heterozygosity for the r.111G-A transition (r.111G-A, NR_023343.1) in the RNU4ATAC gene, and an r.46G-A transition (601428.0017). </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0005 &nbsp; MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 50G-C
<br />
SNP: rs181195449,
gnomAD: rs181195449,
ClinVar: RCV000023100, RCV003556072
</span>
</div>
<div>
<span class="mim-text-font">
<p>In a patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; 210710) born to unrelated Caucasian parents from North America, Edery et al. (2011) identified compound heterozygosity for the common g.51G-A mutation in RNU4ATAC (601428.0001) and a g.50G-C mutation, both in the 5-prime stem loop. This patient had severe intrauterine growth retardation. Brain anomalies included agenesis of the corpus callosum, polymicrogyria, poorly developed ventricular frontal horns and lobes, and a large extra-axial fluid collection in the frontal region. Hydrocephalus developed and shunting was required. The patient died at 6 months of age. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0006 &nbsp; MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 53C-G
<br />
SNP: rs180755563,
gnomAD: rs180755563,
ClinVar: RCV000023101, RCV001852011, RCV004786280
</span>
</div>
<div>
<span class="mim-text-font">
<p>In a patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; 210710) born to unrelated Norwegian parents, Edery et al. (2011) identified compound heterozygosity for the common g.51G-A mutation in RNU4ATAC (601428.0001) and a g.53C-G mutation, both in the 5-prime stem loop. The patient had brain cysts, dysmorphic features, and bone films consistent with MOPD1. The pregnancy was terminated at 16 weeks' gestation. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0007 &nbsp; MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 50G-A
<br />
SNP: rs181195449,
gnomAD: rs181195449,
ClinVar: RCV000023102, RCV001596940, RCV003225025
</span>
</div>
<div>
<span class="mim-text-font">
<p>In a patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; 210710) born to unrelated Caucasian parents from North America, Edery et al. (2011) detected compound heterozygosity for the common 51G-A mutation in RNU4ATAC (601428.0001) and a G-to-A transition at genomic position 50 (50G-A). The patient had intrauterine growth retardation and microcephaly as well as agenesis of corpus callosum, polymicrogyria, poorly developed ventricular frontal horns and lobes, and a large extra-axial fluid collection in the frontal region. The patient also had hypertension and presented several fractures. He died at 6 months of age. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0008 &nbsp; MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 66G-C
<br />
SNP: rs377619732,
gnomAD: rs377619732,
ClinVar: RCV000032637, RCV001852656
</span>
</div>
<div>
<span class="mim-text-font">
<p>In an Egyptian boy with a relatively mild microcephalic osteodysplastic primordial dwarfism type I phenotype (MOPD1; 210710), Abdel-Salam et al. (2012) identified compound heterozygosity for mutations in the RNU4ATAC gene: a g.66G-C transversion and a g.124G-A transition (601428.0009). At 20 months of age, the patient's developmental milestones were only mildly delayed, with normal tone and reflexes on neurologic evaluation. He had no history of repeated infections, eczema, or seizures. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0009 &nbsp; MICROCEPHALIC OSTEODYSPLASTIC PRIMORDIAL DWARFISM, TYPE I</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 124G-A
<br />
SNP: rs544312701,
gnomAD: rs544312701,
ClinVar: RCV000032638, RCV002251939, RCV002514136
</span>
</div>
<div>
<span class="mim-text-font">
<p>For discussion of the g.124G-A transition in the RNU4ATAC gene that was found in compound heterozygous state in a patient with relatively mild microcephalic osteodysplastic primordial dwarfism type I (MOPD1; 210710) by Abdel-Salam et al. (2012), see 601428.0008. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0010 &nbsp; ROIFMAN SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 16G-A
<br />
SNP: rs750325275,
gnomAD: rs750325275,
ClinVar: RCV000202313, RCV001596985, RCV002494514
</span>
</div>
<div>
<span class="mim-text-font">
<p>For discussion of the 16G-A transition in the RNU4ATAC gene (GenBank NR_023343) that was found in compound heterozygous state in a Lebanese sister and brother with Roifman syndrome (RFMN; 616651) by Merico et al. (2015), see 601428.0001. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0011 &nbsp; ROIFMAN SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 13C-T
<br />
SNP: rs559979281,
gnomAD: rs559979281,
ClinVar: RCV000202315, RCV000788934, RCV002478721, RCV004754354
</span>
</div>
<div>
<span class="mim-text-font">
<p>In 2 brothers of Irish descent with Roifman syndrome (RFMN; 616651), previously reported by Roifman (1999), Merico et al. (2015) identified compound heterozygosity for a 13C-T transition and a 37G-A transition in the RNU4ATAC gene (GenBank NR_023343), both of which involve highly conserved nucleotides in stem II region and the 5-prime stem-loop critical region, respectively. In an Italian man with Roifman syndrome, the 13C-T variant was present in compound heterozygosity with a 48G-A transition (601428.0013) that also involves a highly conserved nucleotide in the stem II region. The unaffected parents in both families were each heterozygous for 1 of the variants. None of the variants was found in the 1000 Genomes Project or Complete Genomics databases, but the 13C-T variant was present at a frequency of 0.0008 in the Wellderly study database. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0012 &nbsp; ROIFMAN SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 37G-A
<br />
SNP: rs756026847,
gnomAD: rs756026847,
ClinVar: RCV000202311, RCV001255784, RCV001377935, RCV001775101, RCV002503794, RCV003401092
</span>
</div>
<div>
<span class="mim-text-font">
<p>For discussion of the 37G-A transition in the RNU4ATAC gene (GenBank NR_023343) that was found in compound heterozygous state in 2 brothers with Roifman syndrome (RFMN; 616651) by Merico et al. (2015), see 601428.0011. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0013 &nbsp; ROIFMAN SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 48G-A
<br />
SNP: rs863225422,
gnomAD: rs863225422,
ClinVar: RCV000202314, RCV001095783, RCV001255778, RCV001268112, RCV002500634, RCV003989502
</span>
</div>
<div>
<span class="mim-text-font">
<p>For discussion of the 48G-A transition in the RNU4ATAC gene (GenBank NR_023343) that was found in compound heterozygous state in an Italian man with Roifman syndrome (RFMN; 616651) by Merico et al. (2015), see 601428.0011. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0014 &nbsp; ROIFMAN SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 8C-T ({dbSNP rs370715569})
<br />
SNP: rs370715569,
gnomAD: rs370715569,
ClinVar: RCV000202309, RCV001323592, RCV001775102, RCV002243882, RCV002271461, RCV003401093
</span>
</div>
<div>
<span class="mim-text-font">
<p>In a 4-year-old Albanian boy with Roifman syndrome (RFMN; 616651), Merico et al. (2015) identified compound heterozygosity for an 8C-T transition and a 118T-C transition in the RNU4ATAC gene (GenBank NR_023343), both of which involve highly conserved nucleotides in the stem II region and the Sm protein-binding site, respectively. His unaffected parents were each heterozygous for 1 of the variants, neither of which was found in the 1000 Genomes Project or Wellderly study databases; however, the 8C-T variant was present at a frequency of 0.0011 in the Complete Genomics database. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0015 &nbsp; ROIFMAN SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 118T-C
<br />
SNP: rs863225423,
gnomAD: rs863225423,
ClinVar: RCV000202310, RCV001090269, RCV003165482
</span>
</div>
<div>
<span class="mim-text-font">
<p>For discussion of the 118T-C transition in the RNU4ATAC gene (GenBank NR_023343) that was found in compound heterozygous state in an Albanian boy with Roifman syndrome (RFMN; 616651) by Merico et al. (2015), see 601428.0014. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0016 &nbsp; LOWRY-WOOD SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 5A-C
<br />
SNP: rs533487249,
gnomAD: rs533487249,
ClinVar: RCV001200132, RCV001255656
</span>
</div>
<div>
<span class="mim-text-font">
<p>For discussion of the r.5A-C transversion (r.5A-C, NR_023343.1) in the RNU4ATAC gene, that was found in compound heterozygous state in a 10.75-year-old girl (patient 1) with Lowry-Wood syndrome (LWS; 226960) by Farach et al. (2018), see 601428.0001. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0017 &nbsp; LOWRY-WOOD SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 46G-A
<br />
SNP: rs1032667950,
gnomAD: rs1032667950,
ClinVar: RCV000788935, RCV001003896, RCV001255657
</span>
</div>
<div>
<span class="mim-text-font">
<p>For discussion of the r.46G-A transition (r.46G-A, NR_023343.1) in the RNU4ATAC gene, that was found in compound heterozygous state in a 14-year-old boy (patient 2) and his 15-year-old sister (patient 3) with Lowry-Wood syndrome (LWS; 226960) by Farach et al. (2018), see 601428.0004. Farach et al. (2018) noted that the r.46G-A variant had previously been reported in a patient with microcephalic osteodysplastic primordial dwarfism type I (MOPD1; 210710) by Kilic et al. (2015). </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0018 &nbsp; LOWRY-WOOD SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 53C-T
<br />
SNP: rs180755563,
gnomAD: rs180755563,
ClinVar: RCV000853318, RCV001255772, RCV001317115
</span>
</div>
<div>
<span class="mim-text-font">
<p>In a 19-year-old patient (patient 1) with Lowry-Wood syndrome (LWS; 226960), who was originally described by Brunetti-Pierri et al. (2003), Shelihan et al. (2018) identified compound heterozygosity for an r.53C-T transition (r.53C-T, NR_023343.1) in the RNU4ATAC gene, and an r.8C-A transversion (601428.0019), located in the stem II and 5' stem-loop critical regions, respectively. The proband's unaffected parents were each heterozygous for 1 of the mutations. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0019 &nbsp; LOWRY-WOOD SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 8C-A
<br />
SNP: rs370715569,
gnomAD: rs370715569,
ClinVar: RCV000853317
</span>
</div>
<div>
<span class="mim-text-font">
<p>For discussion of the r.8C-A transversion (r.8C-A, NR_023343.1) in the RNU4ATAC gene, that was found in compound heterozygous state in a 19-year-old patient (patient 1) with Lowry-Wood syndrome (LWS; 226960) by Shelihan et al. (2018), see 601428.0018. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0020 &nbsp; LOWRY-WOOD SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 120T-G
<br />
SNP: rs1281131043,
ClinVar: RCV001255660
</span>
</div>
<div>
<span class="mim-text-font">
<p>In a 28-year-old man (patient 2) with Lowry-Wood syndrome (LWS; 226960), who was originally described by Magnani et al. (2009), Shelihan et al. (2018) identified compound heterozygosity for an r.120T-G transversion (r.120T-G, NR_023343.1) in the critical Sm protein-binding site of the RNU4ATAC gene, and an r.114G-C transversion (601428.0021) at a highly conserved position in the 3-prime stem-loop. His unaffected father was heterozygous for the r.120T-G variant; maternal DNA was unavailable for analysis. </p>
</span>
</div>
<div>
<br />
</div>
</div>
<div>
<div>
<h4>
<span class="mim-font">
<strong>.0021 &nbsp; LOWRY-WOOD SYNDROME</strong>
</span>
</h4>
</div>
<div>
<span class="mim-text-font">
RNU4ATAC, 114G-C
<br />
SNP: rs558667045,
gnomAD: rs558667045,
ClinVar: RCV001255661
</span>
</div>
<div>
<span class="mim-text-font">
<p>For discussion of the r.114G-C transversion (r.114G-C, NR_023343.1) in the RNU4ATAC gene, that was found in compound heterozygous state in a 28-year-old man (patient 2) with Lowry-Wood syndrome (LWS; 226960) by Shelihan et al. (2018), see 601428.0020. </p>
</span>
</div>
<div>
<br />
</div>
</div>
</div>
<div>
<h4>
<span class="mim-font">
<strong>REFERENCES</strong>
</span>
</h4>
<div>
<p />
</div>
<div>
<ol>
<li>
<p class="mim-text-font">
Abdel-Salam, G. M. H., Abdel-Hamid, M. S., Issa, M., Magdy, A., El-Kotoury, A., Amr, K.
<strong>Expanding the phenotypic and mutational spectrum in microcephalic osteodysplastic primordial dwarfism type I.</strong>
Am. J. Med. Genet. 158A: 1455-1461, 2012.
[PubMed: 22581640]
[Full Text: https://doi.org/10.1002/ajmg.a.35356]
</p>
</li>
<li>
<p class="mim-text-font">
Alioto, T. S.
<strong>U12DB: a database of orthologous U12-type spliceosomal introns.</strong>
Nucleic Acids Res. 35: D110-D115, 2007.
[PubMed: 17082203]
[Full Text: https://doi.org/10.1093/nar/gkl796]
</p>
</li>
<li>
<p class="mim-text-font">
Brunetti-Pierri, N., De Brasi, D., Ikegawa, S., Camera, G., Andria, G., Sebastio, G.
<strong>A new patient with Lowry-Wood syndrome with mild phenotype.</strong>
Am. J. Med. Genet. 118A: 68-70, 2003.
[PubMed: 12605445]
[Full Text: https://doi.org/10.1002/ajmg.a.20008]
</p>
</li>
<li>
<p class="mim-text-font">
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Gray, P. E. A., Sillence, D., Kakakios, A.
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Marla J. F. O&#x27;Neill - updated : 09/11/2020<br>Marla J. F. O&#x27;Neill - updated : 11/19/2015<br>Marla J. F. O&#x27;Neill - updated : 11/2/2012<br>Ada Hamosh - updated : 4/22/2011
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