Multiple polysomies in breast carcinomas: Preferential gain of chromosomes 1, 5, 6, 7, 12, 16, 17, 18, and 19

被引:14
作者
Adeyinka, A [1 ]
Mertens, F
Idvall, I
Bondeson, L
Pandis, N
机构
[1] Univ Lund Hosp, Dept Clin Genet, S-22185 Lund, Sweden
[2] Univ Lund Hosp, Dept Pathol, S-22185 Lund, Sweden
[3] Malmo Gen Hosp, Dept Cytol & Pathol, S-21401 Malmo, Sweden
[4] St Savas Anticanc Hosp, Dept Genet, Papanikolaou Res Ctr, Athens, Greece
关键词
D O I
10.1016/S0165-4608(98)00233-7
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Chromosome G-banding analysis of metaphase cells from 16 primary breast carcinomas revealed the presence of multiple polysomies in near-diploid as well as in polyploid cells. Chromosome 17 was preferentially gained in 7 tumors, followed in frequency by chromosomes 1, 12, and 19 (5 tumors each), and chromosomes 5, 6, 7, 16, and 18 (4 tumors each). Eleven of the 16 carcinomas had, apart from the clones exhibiting the numerical gains, other unrelated clones. Nine of these 11 cases had clones with structural chromosome aberrations, 5 of which had structural aberrations involving the short arm of chromosome 3. The biologic significance, if any: of this seemingly nonrandom coexistence of multiple polysomies with structural aberrations of 3p is at present not known. The pattern of numerical chromosome aberrations observed in the present study is comparable to previous results from fluorescence in situ hybridization (FISH) studies, with the use of centromeric probes on interphase cells. However, unlike FISH studies, which have been focused on chromosomes 1, 3, 7, 8, 11, 16, and 17, the cytogenetic results reveal that other chromosomes also may be nonrandomly gained as part of multiple polysomies in breast carcinomas. In addition, the tumors with multiple polysomies were generally of high histologic grade and with metastasis to axillary lymph nodes, suggesting that multiple whole-chromosome gains may be a pathway of genetic evolution or progression or both in some breast carcinomas. (C) Elsevier Science Inc., 1999. All rights reserved.
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页码:144 / 148
页数:5
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