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Genes Chromosomes Cancer. 2000 Feb;27(2):209-15.

Dysregulation of HMGIC in a uterine lipoleiomyoma with a complex rearrangement including chromosomes 7, 12, and 14.

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  • 1Department of Obstetrics, Gynecology, and Reproductive Biology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.

Abstract

Uterine lipoleiomyomas are extremely rare tumors consisting of a mixture of mature adipocytes and smooth muscle cells. Using G-banding and FISH, we characterized a complex rearrangement involving chromosomes 7, 8, 10, 11, 12, and 14 in one of these tumors. The region 14q23-24 was inserted into the long arm of the derivative chromosome 12, between the 3' end of HMGIC and 7q21-22, another region often rearranged in uterine leiomyomas. Other portions of chromosomes 12 and 14 were involved in derivative chromosomes 7, 11, 12, and 14. A chromosome 8 was involved in a three-way rearrangement including the derivative 7, a ring chromosome 10, and a small derivative chromosome 8 bearing segments of chromosomes 10 and 11. No abnormality of chromosome 5 was detected, in contrast to two previously reported cytogenetic analyses of uterine lipoleiomyoma. The consistent finding of chromosomes 12 and 14 on different derivatives indicates that the t(12;14) was a primary event. In addition, immunohistochemical studies showed that HMGI-C was aberrantly expressed in this tumor. These observations suggest that uterine lipoleiomyomas have a pathogenetic origin similar to that of typical leiomyomas. Genes Chromosomes Cancer 27:209-215, 2000.

Copyright 2000 Wiley-Liss, Inc.

PMID:
10612811
[PubMed - indexed for MEDLINE]
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