nih-gov/www.ncbi.nlm.nih.gov/omim/159595

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Entry
- %159595 - MYELOPROLIFERATIVE SYNDROME, TRANSIENT
- OMIM
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<span class="h4">%159595</span>
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<strong>Table of Contents</strong>
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<a href="#" class="mim-tip-icd" qtip_title="<strong>ICD+</strong>" qtip_text="
<strong>SNOMEDCT:</strong> 450934005, 721307000<br />
<strong>ORPHA:</strong> 420611<br />
<strong>DO:</strong> 0060888<br />
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<span class="h3">
<span class="mim-font mim-tip-hint" title="Phenotype description or locus, molecular basis unknown">
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159595
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<h3>
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MYELOPROLIFERATIVE SYNDROME, TRANSIENT
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<em>Alternative titles; symbols</em>
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MST<br />
LEUKEMIA, TRANSIENT<br />
TRANSIENT ABNORMAL MYELOPOIESIS; TAM
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Cytogenetic location: <a href="/geneMap/21/8?start=-3&limit=10&highlight=8">21q11.2</a>
&nbsp;
Genomic coordinates <span class="small">(GRCh38)</span> : <a href="https://genome.ucsc.edu/cgi-bin/hgTracks?db=hg38&position=chr21:13000001-15000000&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'})">21:13,000,001-15,000,000</a> </span>
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Phenotype <br /> MIM number
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Inheritance
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Phenotype <br /> mapping key
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<a href="/geneMap/21/8?start=-3&limit=10&highlight=8">
21q11.2
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Leukemia, transient, of Down syndrome
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<a href="/entry/159595"> 159595 </a>
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<abbr class="mim-tip-hint" title="2 - The disorder was placed on the map by statistical methods">2</abbr>
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<strong> Heme </strong>
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- Transient myeloproliferative syndrome <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/450934005" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">450934005</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/721307000" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">721307000</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C1834582&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C1834582</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0005534" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0005534</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0005534" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0005534</a>]</span><br />
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- Usually in newborns with Down syndrome<br /> - rarely in normals<br />
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<span class="h5 mim-font">
<strong> Lab </strong>
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- Leukocytosis <span class="mim-feature-ids hidden">[SNOMEDCT: <a href="https://purl.bioontology.org/ontology/SNOMEDCT/414478003" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">414478003</a>, <a href="https://purl.bioontology.org/ontology/SNOMEDCT/111583006" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'SNOMEDCT\', \'domain\': \'bioontology.org\'})">111583006</a>]</span> <span class="mim-feature-ids hidden">[ICD10CM: <a href="https://purl.bioontology.org/ontology/ICD10CM/D72.82" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">D72.82</a>, <a href="https://purl.bioontology.org/ontology/ICD10CM/D72.829" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD10CM\', \'domain\': \'bioontology.org\'})">D72.829</a>]</span> <span class="mim-feature-ids hidden">[ICD9CM: <a href="https://purl.bioontology.org/ontology/ICD9CM/288.60" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">288.60</a>, <a href="https://purl.bioontology.org/ontology/ICD9CM/288.6" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'ICD9CM\', \'domain\': \'bioontology.org\'})">288.6</a>]</span> <span class="mim-feature-ids hidden">[UMLS: <a href="https://bioportal.bioontology.org/search?q=C0023518&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0023518</a>, <a href="https://bioportal.bioontology.org/search?q=C0750426&searchproperties=true" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'UMLS\', \'domain\': \'bioontology.org\'})">C0750426</a> HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001974" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001974</a>]</span> <span class="mim-feature-ids hidden">[HPO: <a href="https://hpo.jax.org/app/browse/term/HP:0001974" target="_blank" onclick="gtag(\'event\', \'mim_outbound\', {\'name\': \'HPO\', \'domain\': \'hpo.jax.org\'})">HP:0001974</a>]</span><br />
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<span class="h5 mim-font">
<strong> Inheritance </strong>
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- Possible disomic homozygosity at 21q11.2<br />
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<p>Transient myeloproliferative syndrome is a leukemoid reaction that occurs in some newborn infants with Down syndrome and rarely in phenotypically normal infants (<a href="#5" class="mim-tip-reference" title="Seibel, N. L., Sommer, A., Miser, J. &lt;strong&gt;Transient neonatal leukemoid reactions in mosaic trisomy 21.&lt;/strong&gt; J. Pediat. 104: 251-254, 1984.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/6229618/&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;6229618&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1016/s0022-3476(84)81006-9&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="6229618">Seibel et al., 1984</a>). In 9 Down syndrome patients with transient myeloproliferative syndrome, <a href="#3" class="mim-tip-reference" title="Niikawa, N., Deng, H.-X., Abe, K., Harada, N., Okada, T., Tsuchiya, H., Akaboshi, I., Matsuda, I., Fukushima, Y., Kaneko, Y., Kuwano, A., Kajii, T. &lt;strong&gt;Possible mapping of the gene for transient myeloproliferative syndrome at 21q11.2.&lt;/strong&gt; Hum. Genet. 87: 561-566, 1991.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/1680787/&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;1680787&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/BF00209012&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="1680787">Niikawa et al. (1991)</a> found that the mode of inheritance of centromeric chromosomal markers was compatible with duplication of one parental chromosome 21. Therefore, they proposed a hypothesis of 'disomic homozygosity' of a mutant gene on chromosome 21 as the causative mechanism (<a href="#1" class="mim-tip-reference" title="Abe, K., Kajii, T., Niikawa, N. &lt;strong&gt;Disomic homozygosity in 21-trisomic cells: a mechanism responsible for transient myeloproliferative syndrome.&lt;/strong&gt; Hum. Genet. 82: 313-316, 1989.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/2525515/&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;2525515&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/BF00273988&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="2525515">Abe et al., 1989</a>). <a href="#3" class="mim-tip-reference" title="Niikawa, N., Deng, H.-X., Abe, K., Harada, N., Okada, T., Tsuchiya, H., Akaboshi, I., Matsuda, I., Fukushima, Y., Kaneko, Y., Kuwano, A., Kajii, T. &lt;strong&gt;Possible mapping of the gene for transient myeloproliferative syndrome at 21q11.2.&lt;/strong&gt; Hum. Genet. 87: 561-566, 1991.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/1680787/&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;1680787&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/BF00209012&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="1680787">Niikawa et al. (1991)</a> observed a Down syndrome patient who had an inversion of one chromosome 21; by studies with DNA polymorphic markers in 5 other patients, they obtained results suggesting that the putative gene (which they symbolized TMS) was located at 21q11.2. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=6229618+1680787+2525515" 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>Cytogenetic and molecular studies demonstrated that in Down syndrome associated with transient abnormal myelopoiesis, trisomy 21 had arisen much more frequently through mitotic (or meiosis II) nondisjunctions than through meiosis I errors (<a href="#6" class="mim-tip-reference" title="Shen, J. J., Williams, B. J., Zipursky, A., Doyle, J., Sherman, S. L., Jacobs, P. A., Shugar, A. L., Soukup, S. W., Hassold, T. J. &lt;strong&gt;Cytogenetic and molecular studies of Down syndrome individuals with leukemia.&lt;/strong&gt; Am. J. Hum. Genet. 56: 915-925, 1995.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/7717402/&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;7717402&lt;/a&gt;]" pmid="7717402">Shen et al., 1995</a>). This supported the notion of 'disomic homozygosity' of a certain locus on chromosome 21 in 21-trisomic cells. In these patients there was no evidence of maternal age effect (<a href="#2" class="mim-tip-reference" title="Iselius, L., Jacobs, P., Morton, N. &lt;strong&gt;Leukaemia and transient leukaemia in Down syndrome.&lt;/strong&gt; Hum. Genet. 85: 477-485, 1990.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/2146208/&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;2146208&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/BF00194220&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="2146208">Iselius et al., 1990</a>). Like <a href="#3" class="mim-tip-reference" title="Niikawa, N., Deng, H.-X., Abe, K., Harada, N., Okada, T., Tsuchiya, H., Akaboshi, I., Matsuda, I., Fukushima, Y., Kaneko, Y., Kuwano, A., Kajii, T. &lt;strong&gt;Possible mapping of the gene for transient myeloproliferative syndrome at 21q11.2.&lt;/strong&gt; Hum. Genet. 87: 561-566, 1991.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/1680787/&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;1680787&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/BF00209012&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="1680787">Niikawa et al. (1991)</a>, <a href="#6" class="mim-tip-reference" title="Shen, J. J., Williams, B. J., Zipursky, A., Doyle, J., Sherman, S. L., Jacobs, P. A., Shugar, A. L., Soukup, S. W., Hassold, T. J. &lt;strong&gt;Cytogenetic and molecular studies of Down syndrome individuals with leukemia.&lt;/strong&gt; Am. J. Hum. Genet. 56: 915-925, 1995.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/7717402/&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;7717402&lt;/a&gt;]" pmid="7717402">Shen et al. (1995)</a> mapped the putative TAM gene to the pericentromeric region, 21q11.1-q11.2. In the 7-day-old male with Down syndrome and TAM reported by <a href="#3" class="mim-tip-reference" title="Niikawa, N., Deng, H.-X., Abe, K., Harada, N., Okada, T., Tsuchiya, H., Akaboshi, I., Matsuda, I., Fukushima, Y., Kaneko, Y., Kuwano, A., Kajii, T. &lt;strong&gt;Possible mapping of the gene for transient myeloproliferative syndrome at 21q11.2.&lt;/strong&gt; Hum. Genet. 87: 561-566, 1991.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/1680787/&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;1680787&lt;/a&gt;] [&lt;a href=&quot;https://doi.org/10.1007/BF00209012&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="1680787">Niikawa et al. (1991)</a>, <a href="#4" class="mim-tip-reference" title="Ohta, T., Nakano, M., Tsujita, T., Abe, K., Osoegawa, K., Yamagata, T., Yoshiura, K., Jinno, Y., Soeda, E., Nakamura, Y., Niikawa, N. &lt;strong&gt;Isolation of a cosmid clone corresponding to an inv(21) breakpoint of a patient with transient abnormal myelopoiesis.&lt;/strong&gt; Am. J. Hum. Genet. 58: 544-550, 1996.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/8644714/&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;8644714&lt;/a&gt;]" pmid="8644714">Ohta et al. (1996)</a> isolated a cosmid clone corresponding to the inv(21) breakpoint, on the presumption that in this patient the putative TAM gene was disrupted by the break. The mother had the same inversion, and the father had a normal karyotype. The leukemoid reaction disappeared spontaneously several months after birth. <a href="#4" class="mim-tip-reference" title="Ohta, T., Nakano, M., Tsujita, T., Abe, K., Osoegawa, K., Yamagata, T., Yoshiura, K., Jinno, Y., Soeda, E., Nakamura, Y., Niikawa, N. &lt;strong&gt;Isolation of a cosmid clone corresponding to an inv(21) breakpoint of a patient with transient abnormal myelopoiesis.&lt;/strong&gt; Am. J. Hum. Genet. 58: 544-550, 1996.[PubMed: &lt;a href=&quot;https://pubmed.ncbi.nlm.nih.gov/8644714/&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;8644714&lt;/a&gt;]" pmid="8644714">Ohta et al. (1996)</a> noted there was no evidence of imprinting on chromosome 21; thus, they speculated that disruption of a putative TAM gene may be the basis of the abnormality. The existence of a fusion gene is unlikely because almost no cases of TAM in Down syndrome had been reported with a rearranged chromosome 21 such as was observed in this critical case. <a href="https://pubmed.ncbi.nlm.nih.gov/?term=1680787+2146208+8644714+7717402" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})"><span class="glyphicon glyphicon-plus-sign mim-tip-hint" title="Click this 'reference-plus' icon to see articles related to this paragraph in PubMed."></span></a></p>
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<span id="mimReferencesToggleTriangle" class="small mimTextToggleTriangle">&#9660;</span>
<strong>REFERENCES</strong>
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<ol>
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<a id="1" class="mim-anchor"></a>
<a id="Abe1989" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Abe, K., Kajii, T., Niikawa, N.
<strong>Disomic homozygosity in 21-trisomic cells: a mechanism responsible for transient myeloproliferative syndrome.</strong>
Hum. Genet. 82: 313-316, 1989.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/2525515/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">2525515</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=2525515" 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/BF00273988" target="_blank">Full Text</a>]
</p>
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<a id="2" class="mim-anchor"></a>
<a id="Iselius1990" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Iselius, L., Jacobs, P., Morton, N.
<strong>Leukaemia and transient leukaemia in Down syndrome.</strong>
Hum. Genet. 85: 477-485, 1990.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/2146208/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">2146208</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=2146208" 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/BF00194220" target="_blank">Full Text</a>]
</p>
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<a id="3" class="mim-anchor"></a>
<a id="Niikawa1991" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Niikawa, N., Deng, H.-X., Abe, K., Harada, N., Okada, T., Tsuchiya, H., Akaboshi, I., Matsuda, I., Fukushima, Y., Kaneko, Y., Kuwano, A., Kajii, T.
<strong>Possible mapping of the gene for transient myeloproliferative syndrome at 21q11.2.</strong>
Hum. Genet. 87: 561-566, 1991.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/1680787/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">1680787</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=1680787" 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/BF00209012" target="_blank">Full Text</a>]
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<a id="4" class="mim-anchor"></a>
<a id="Ohta1996" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Ohta, T., Nakano, M., Tsujita, T., Abe, K., Osoegawa, K., Yamagata, T., Yoshiura, K., Jinno, Y., Soeda, E., Nakamura, Y., Niikawa, N.
<strong>Isolation of a cosmid clone corresponding to an inv(21) breakpoint of a patient with transient abnormal myelopoiesis.</strong>
Am. J. Hum. Genet. 58: 544-550, 1996.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/8644714/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">8644714</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=8644714" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
</p>
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<a id="5" class="mim-anchor"></a>
<a id="Seibel1984" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Seibel, N. L., Sommer, A., Miser, J.
<strong>Transient neonatal leukemoid reactions in mosaic trisomy 21.</strong>
J. Pediat. 104: 251-254, 1984.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/6229618/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">6229618</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=6229618" 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/s0022-3476(84)81006-9" target="_blank">Full Text</a>]
</p>
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<a id="6" class="mim-anchor"></a>
<a id="Shen1995" class="mim-anchor"></a>
<div class="">
<p class="mim-text-font">
Shen, J. J., Williams, B. J., Zipursky, A., Doyle, J., Sherman, S. L., Jacobs, P. A., Shugar, A. L., Soukup, S. W., Hassold, T. J.
<strong>Cytogenetic and molecular studies of Down syndrome individuals with leukemia.</strong>
Am. J. Hum. Genet. 56: 915-925, 1995.
[PubMed: <a href="https://pubmed.ncbi.nlm.nih.gov/7717402/" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">7717402</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/?cmd=link&linkname=pubmed_pubmed&from_uid=7717402" target="_blank" onclick="gtag('event', 'mim_outbound', {'name': 'PubMed Related', 'domain': 'pubmed.ncbi.nlm.nih.gov'})">related citations</a>]
</p>
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</div>
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</div>
<div>
<a id="creationDate" class="mim-anchor"></a>
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<div class="col-lg-2 col-md-2 col-sm-4 col-xs-4">
<span class="text-nowrap mim-text-font">
Creation Date:
</span>
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<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
Victor A. McKusick : 2/18/1992
</span>
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</div>
<div>
<a id="editHistory" class="mim-anchor"></a>
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<a href="#mimCollapseEditHistory" role="button" data-toggle="collapse"> Edit History: </a>
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<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
mgross : 03/17/2004
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</div>
<div class="row collapse" id="mimCollapseEditHistory">
<div class="col-lg-offset-2 col-md-offset-2 col-sm-offset-4 col-xs-offset-4 col-lg-6 col-md-6 col-sm-6 col-xs-6">
<span class="mim-text-font">
terry : 3/26/1996<br>mark : 3/6/1996<br>terry : 3/5/1996<br>mimadm : 12/2/1994<br>supermim : 3/16/1992<br>carol : 2/18/1992
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<span class="mim-font">
<strong>%</strong> 159595
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<span class="mim-font">
MYELOPROLIFERATIVE SYNDROME, TRANSIENT
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<span class="mim-font">
<em>Alternative titles; symbols</em>
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<h4>
<span class="mim-font">
MST<br />
LEUKEMIA, TRANSIENT<br />
TRANSIENT ABNORMAL MYELOPOIESIS; TAM
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<span class="mim-text-font">
<strong>SNOMEDCT:</strong> 450934005, 721307000; &nbsp;
<strong>ORPHA:</strong> 420611; &nbsp;
<strong>DO:</strong> 0060888; &nbsp;
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<span class="mim-text-font">
<strong>
<em>
Cytogenetic location: 21q11.2
&nbsp;
Genomic coordinates <span class="small">(GRCh38)</span> : 21:13,000,001-15,000,000 </span>
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<strong>Gene-Phenotype Relationships</strong>
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Location
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Phenotype
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Phenotype <br /> MIM number
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Inheritance
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Phenotype <br /> mapping key
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<td rowspan="1">
<span class="mim-font">
21q11.2
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<td>
<span class="mim-font">
Leukemia, transient, of Down syndrome
</span>
</td>
<td>
<span class="mim-font">
159595
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<td>
<span class="mim-font">
</span>
</td>
<td>
<span class="mim-font">
2
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<span class="mim-font">
<strong>TEXT</strong>
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<p>Transient myeloproliferative syndrome is a leukemoid reaction that occurs in some newborn infants with Down syndrome and rarely in phenotypically normal infants (Seibel et al., 1984). In 9 Down syndrome patients with transient myeloproliferative syndrome, Niikawa et al. (1991) found that the mode of inheritance of centromeric chromosomal markers was compatible with duplication of one parental chromosome 21. Therefore, they proposed a hypothesis of 'disomic homozygosity' of a mutant gene on chromosome 21 as the causative mechanism (Abe et al., 1989). Niikawa et al. (1991) observed a Down syndrome patient who had an inversion of one chromosome 21; by studies with DNA polymorphic markers in 5 other patients, they obtained results suggesting that the putative gene (which they symbolized TMS) was located at 21q11.2. </p><p>Cytogenetic and molecular studies demonstrated that in Down syndrome associated with transient abnormal myelopoiesis, trisomy 21 had arisen much more frequently through mitotic (or meiosis II) nondisjunctions than through meiosis I errors (Shen et al., 1995). This supported the notion of 'disomic homozygosity' of a certain locus on chromosome 21 in 21-trisomic cells. In these patients there was no evidence of maternal age effect (Iselius et al., 1990). Like Niikawa et al. (1991), Shen et al. (1995) mapped the putative TAM gene to the pericentromeric region, 21q11.1-q11.2. In the 7-day-old male with Down syndrome and TAM reported by Niikawa et al. (1991), Ohta et al. (1996) isolated a cosmid clone corresponding to the inv(21) breakpoint, on the presumption that in this patient the putative TAM gene was disrupted by the break. The mother had the same inversion, and the father had a normal karyotype. The leukemoid reaction disappeared spontaneously several months after birth. Ohta et al. (1996) noted there was no evidence of imprinting on chromosome 21; thus, they speculated that disruption of a putative TAM gene may be the basis of the abnormality. The existence of a fusion gene is unlikely because almost no cases of TAM in Down syndrome had been reported with a rearranged chromosome 21 such as was observed in this critical case. </p>
</span>
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<div>
<h4>
<span class="mim-font">
<strong>REFERENCES</strong>
</span>
</h4>
<div>
<p />
</div>
<div>
<ol>
<li>
<p class="mim-text-font">
Abe, K., Kajii, T., Niikawa, N.
<strong>Disomic homozygosity in 21-trisomic cells: a mechanism responsible for transient myeloproliferative syndrome.</strong>
Hum. Genet. 82: 313-316, 1989.
[PubMed: 2525515]
[Full Text: https://doi.org/10.1007/BF00273988]
</p>
</li>
<li>
<p class="mim-text-font">
Iselius, L., Jacobs, P., Morton, N.
<strong>Leukaemia and transient leukaemia in Down syndrome.</strong>
Hum. Genet. 85: 477-485, 1990.
[PubMed: 2146208]
[Full Text: https://doi.org/10.1007/BF00194220]
</p>
</li>
<li>
<p class="mim-text-font">
Niikawa, N., Deng, H.-X., Abe, K., Harada, N., Okada, T., Tsuchiya, H., Akaboshi, I., Matsuda, I., Fukushima, Y., Kaneko, Y., Kuwano, A., Kajii, T.
<strong>Possible mapping of the gene for transient myeloproliferative syndrome at 21q11.2.</strong>
Hum. Genet. 87: 561-566, 1991.
[PubMed: 1680787]
[Full Text: https://doi.org/10.1007/BF00209012]
</p>
</li>
<li>
<p class="mim-text-font">
Ohta, T., Nakano, M., Tsujita, T., Abe, K., Osoegawa, K., Yamagata, T., Yoshiura, K., Jinno, Y., Soeda, E., Nakamura, Y., Niikawa, N.
<strong>Isolation of a cosmid clone corresponding to an inv(21) breakpoint of a patient with transient abnormal myelopoiesis.</strong>
Am. J. Hum. Genet. 58: 544-550, 1996.
[PubMed: 8644714]
</p>
</li>
<li>
<p class="mim-text-font">
Seibel, N. L., Sommer, A., Miser, J.
<strong>Transient neonatal leukemoid reactions in mosaic trisomy 21.</strong>
J. Pediat. 104: 251-254, 1984.
[PubMed: 6229618]
[Full Text: https://doi.org/10.1016/s0022-3476(84)81006-9]
</p>
</li>
<li>
<p class="mim-text-font">
Shen, J. J., Williams, B. J., Zipursky, A., Doyle, J., Sherman, S. L., Jacobs, P. A., Shugar, A. L., Soukup, S. W., Hassold, T. J.
<strong>Cytogenetic and molecular studies of Down syndrome individuals with leukemia.</strong>
Am. J. Hum. Genet. 56: 915-925, 1995.
[PubMed: 7717402]
</p>
</li>
</ol>
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<br />
</div>
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Creation Date:
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<span class="mim-text-font">
Victor A. McKusick : 2/18/1992
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Edit History:
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mgross : 03/17/2004<br>terry : 3/26/1996<br>mark : 3/6/1996<br>terry : 3/5/1996<br>mimadm : 12/2/1994<br>supermim : 3/16/1992<br>carol : 2/18/1992
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NOTE: OMIM is intended for use primarily by physicians and other professionals concerned with genetic disorders, by genetics researchers,
and by advanced students in science and medicine. While the OMIM database is open to the public, users seeking information about a personal
medical or genetic condition are urged to consult with a qualified physician for diagnosis and for answers to personal questions.
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OMIM<sup>&reg;</sup> and Online Mendelian Inheritance in Man<sup>&reg;</sup> are registered trademarks of the Johns Hopkins University.
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Copyright<sup>&reg;</sup> 1966-2025 Johns Hopkins University.
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