PMID- 1384658 OWN - NLM STAT- MEDLINE DCOM- 19921217 LR - 20191021 IS - 1045-2257 (Print) IS - 1045-2257 (Linking) VI - 5 IP - 1 DP - 1992 Jul TI - Analysis of chromosome 12 aneuploidy in interphase cells from human male germ cell tumors by fluorescence in situ hybridization. PG - 21-9 AB - The i(12p) marker chromosome has been found to be a highly nonrandom chromosome abnormality associated with germ cell tumors (GCTs). We have previously shown that a chromosome 12 centromere specific alpha-satellite DNA probe detects the i(12p) by virtue of differences in the size of the signal originating from the i(12p) and normal chromosome 12 centromeres after fluorescence in situ hybridization (FISH) in metaphase and interphase cells of cultured GCT cell lines. We have now extended this analysis to 72 fresh GCT tumor biopsy specimens. Banded cytogenetic analysis was attempted on each of these tumors, 45 of which were found to be clonally abnormal. Data on i(12p) and chromosome 12 copy number obtained by FISH agreed well with those obtained by cytogenetic analysis. In addition, the FISH method made possible the detection and determination of i(12p) and the chromosome 12 copy number in cases in which conventional cytogenetic analysis was unsuccessful. We found the incidence of i(12p) in seminomas to be low (7%) compared to that in nonseminomas (75%) when tumor biopsy specimens were studied by FISH. Our results show that the FISH technique can be used reliably for detection of the diagnostically and prognostically useful i(12p) marker in GCT tumor biopsy specimens. FAU - Rodriguez, E AU - Rodriguez E AD - Laboratory of Cancer Genetics, Sloan-Kettering Institute, New York, New York. FAU - Mathew, S AU - Mathew S FAU - Mukherjee, A B AU - Mukherjee AB FAU - Reuter, V E AU - Reuter VE FAU - Bosl, G J AU - Bosl GJ FAU - Chaganti, R S AU - Chaganti RS LA - eng GR - CA-05826/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Genes Chromosomes Cancer JT - Genes, chromosomes & cancer JID - 9007329 RN - 0 (Biomarkers, Tumor) RN - 0 (DNA, Satellite) RN - 0 (Genetic Markers) SB - IM MH - *Aneuploidy MH - Biomarkers, Tumor MH - Centromere/ultrastructure MH - Chromosome Deletion MH - *Chromosome Inversion MH - Chromosomes, Human, Pair 12/*ultrastructure MH - DNA, Satellite/analysis MH - Dysgerminoma/genetics/pathology MH - Genetic Markers MH - Humans MH - In Situ Hybridization, Fluorescence MH - Interphase MH - Male MH - Neoplasms, Germ Cell and Embryonal/*genetics/pathology MH - Nondisjunction, Genetic EDAT- 1992/07/01 00:00 MHDA- 1992/07/01 00:01 CRDT- 1992/07/01 00:00 PHST- 1992/07/01 00:00 [pubmed] PHST- 1992/07/01 00:01 [medline] PHST- 1992/07/01 00:00 [entrez] AID - 10.1002/gcc.2870050104 [doi] PST - ppublish SO - Genes Chromosomes Cancer. 1992 Jul;5(1):21-9. doi: 10.1002/gcc.2870050104.