PMID- 8749778 OWN - NLM STAT- MEDLINE DCOM- 19961023 LR - 20071114 IS - 0196-4763 (Print) IS - 0196-4763 (Linking) VI - 22 IP - 4 DP - 1995 Dec 15 TI - Aneuploidy in breast cancer: a fluorescence in situ hybridization study. PG - 282-91 AB - Although ploidy is associated with the development and progression of most breast cancers, the value of flow cytometric ploidy as a clinical prognostic factor remains controversial. The technique of fluorescence in situ hybridization (FISH) can be used not only to determine overall ploidy, but also to assess the over-representation or under-representation of specific chromosomes in interphase cells. This information may be of prognostic value. We studied 84 primary breast cancers and 20 metastatic tumors by FISH, using chromosome-specific fluorescent centromeric probes. Of these, 100 cases were also studied by DNA flow cytometry. The FISH studies were concordant with DNA flow cytometry with regard to distinguishing aneuploid from diploid tumors in 78% of cases. The FISH data suggested that aneuploidy arises by a process of chromosome complement doubling with subsequent chromosome loss. In tumors that exhibited evidence of more than one round of chromosome complement doubling, the selective accumulation of multiple copies of specific chromosomes or chromosome segments was common. Multiple copies of chromosomes centromeres 1, 3, and 17 were accumulated selectively in the cells of individual tumors more frequently than chromosomes centromeres 7, 11, and 16. Multiple copies of chromosomes centromeres 10 and 20 were selectively accumulated only rarely, if at all. Aneuploidy in breast cancer can be divided into distinct stages using fluorescence in situ hybridization techniques. The stages of aneuploidy provide potential landmarks in the genetic evolution of this disease with possible links to chromosome-specific evolutionary changes. FAU - Shackney, S E AU - Shackney SE AD - Laboratory of Cancer Cell Biology and Genetics, Allegheny-Singer Research Institute, Pittsburgh, Pennsylvania 15212-4772, USA. FAU - Singh, S G AU - Singh SG FAU - Yakulis, R AU - Yakulis R FAU - Smith, C A AU - Smith CA FAU - Pollice, A A AU - Pollice AA FAU - Petruolo, S AU - Petruolo S FAU - Waggoner, A AU - Waggoner A FAU - Hartsock, R J AU - Hartsock RJ LA - eng GR - 1 RO1 CA55230/CA/NCI NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Cytometry JT - Cytometry JID - 8102328 RN - 0 (DNA, Neoplasm) SB - IM MH - Aged MH - *Aneuploidy MH - Breast Neoplasms/*genetics MH - *Chromosome Aberrations MH - *Chromosome Disorders MH - DNA, Neoplasm/genetics MH - Data Interpretation, Statistical MH - Female MH - Flow Cytometry MH - Gene Dosage MH - Humans MH - In Situ Hybridization, Fluorescence MH - Lymphocytes/cytology/physiology MH - Middle Aged MH - S Phase/genetics MH - Specimen Handling EDAT- 1995/12/15 00:00 MHDA- 1995/12/15 00:01 CRDT- 1995/12/15 00:00 PHST- 1995/12/15 00:00 [pubmed] PHST- 1995/12/15 00:01 [medline] PHST- 1995/12/15 00:00 [entrez] AID - 10.1002/cyto.990220404 [doi] PST - ppublish SO - Cytometry. 1995 Dec 15;22(4):282-91. doi: 10.1002/cyto.990220404.