PMID- 9596484 OWN - NLM STAT- MEDLINE DCOM- 19980806 LR - 20190905 IS - 0167-6806 (Print) IS - 0167-6806 (Linking) VI - 48 IP - 2 DP - 1998 Mar TI - Aneuploidy of chromosome 8 as detected by interphase fluorescence in situ hybridization is a recurrent finding in primary and metastatic breast cancer. PG - 125-33 AB - Previous work from our laboratory demonstrated aneuploidy for several chromosomes by interphase fluorescence in situ hybridization (FISH) in a high proportion of breast cancer specimens. In the literature, only limited data are available concerning chromosome 8 anomalies in breast cancer. To determine chromosome 8 ploidy status in primary and metastatic specimens from 81 breast cancer patients, FISH analysis with a DNA probe recognizing chromosome 8 centromeres was performed. In all primary tumor specimens (n = 30), significant proportions of cells were aneuploid exhibiting gain of chromosome 8 copy numbers; in 75% of effusion specimens previously classified as malignant by cytology and/or FISH for various chromosomes (n = 40), cell populations aneuploid for chromosome 8 were detected; effusions previously classified non-malignant (n = 11) were diploid in 10 cases, whereas one specimen contained rare hyperdiploid cells. Among these cells complex chromosomal aneuploidy could be demonstrated by two-color FISH, suggesting malignancy. Trisomic and tetrasomic clones were predominant in the majority of samples, but a marked intratumor cytogenetic heterogeneity was observed in most cases. Primary tumors and corresponding positive axillary lymph nodes revealed similar distributions of chromosome 8 copy numbers, analogous to previous findings with other chromosomes. This implies that, by using suitable FISH probes after examination of the respective primary tumor, an efficient search for (micro)metastasis might be feasible. FAU - Roka, S AU - Roka S AD - First Department of Internal Medicine, University of Vienna, Austria. FAU - Fiegl, M AU - Fiegl M FAU - Zojer, N AU - Zojer N FAU - Filipits, M AU - Filipits M FAU - Schuster, R AU - Schuster R FAU - Steiner, B AU - Steiner B FAU - Jakesz, R AU - Jakesz R FAU - Huber, H AU - Huber H FAU - Drach, J AU - Drach J LA - eng PT - Comparative Study PT - Journal Article PL - Netherlands TA - Breast Cancer Res Treat JT - Breast cancer research and treatment JID - 8111104 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - *Aneuploidy MH - Breast Neoplasms/*pathology/ultrastructure MH - Carcinoma, Ductal, Breast/*pathology/ultrastructure MH - *Chromosomes, Human, Pair 8 MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Interphase MH - Middle Aged MH - Neoplasm Metastasis EDAT- 1998/05/22 00:00 MHDA- 1998/05/22 00:01 CRDT- 1998/05/22 00:00 PHST- 1998/05/22 00:00 [pubmed] PHST- 1998/05/22 00:01 [medline] PHST- 1998/05/22 00:00 [entrez] AID - 10.1023/a:1005937305102 [doi] PST - ppublish SO - Breast Cancer Res Treat. 1998 Mar;48(2):125-33. doi: 10.1023/a:1005937305102.