A der(13)t(7;13)(p13;q14) with monoallelic loss of RB1 and D13S319 in myelodysplastic syndrome
A der(13)t(7;13)(p13;q14) with monoallelic loss of RB1 and D13S319 in myelodysplastic syndrome
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DOI:
10.1016/j.cancergencyto.2005.03.020
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发表时间:
2005-10-15
影响因子:
--
通讯作者:
Matsui, T
中科院分区:
文献类型:
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作者:
Yamamoto, K;Ito, M;Matsui, T
Deletions or translocations of chromosome band 13q14, the locus of the retinoblastoma gene (RB1), have been observed in a variety of hematological malignancies including myelodysplastic syndrome (MDS). We describe here a novel unbalanced translocation der(13)t(7;13)(p13;q14) involving 13q14 in a patient with MDS. A 66-year-old woman was diagnosed as having NIDS, refractory anemia with excess of blasts (RAEB-1) because of 7.4% blasts and trilineage dysplasia in the bone marrow cells. G-banding and spectral karyotyping analyses showed complex karyotypes as follows: 46,XX,der(6)t(6;7)(q11;?),der(7)de](7)(?p13)t(6;7)(q?;q11)t(6;I3)(q?;q?),der(13)t(7;13)(pl3;q14). Fluorescence in situ hybridization (FISH) analyses demonstrated that one allele of the RB I gene and the microsatellite locus D13S319, located at 13q14 and telomeric to the RB1 gene, was deleted. Considering other reported cases, our results indicate that submicroscopic deletions accompanying 13q 14 translocations are recurrent cytogenetic aberrations in NIDS. The RB1 gene or another tumor suppressor gene in the vicinity of D13S319, or both, may be involved in the pathogenesis of NIDS with 13q14 translocations by monoallelic deletion. (c) 2005 Elsevier Inc. All rights reserved.