PMID- 10861572 OWN - NLM STAT- MEDLINE DCOM- 20000713 LR - 20041117 IS - 0022-3417 (Print) IS - 0022-3417 (Linking) VI - 191 IP - 2 DP - 2000 Jun TI - c-erbB2 oncoprotein expression, gene amplification, and chromosome 17 aneusomy in apocrine adenosis of the breast. PG - 138-42 AB - Amplification of the c-erbB2 oncogene and numerical aberrations of chromosome 17 occur in human breast carcinomas. Apocrine adenosis (AA) of the breast has been shown occasionally to have c-erbB2 overexpression and a possible premalignant potential, but little is known about cellular level genetic alterations in AA of the breast. Fluorescence in situ hybridization (FISH) is a new approach to detect these. In this study, a series of AA was studied by immunohistochemistry for c-erbB2 protein expression and by FISH using dual colour DNA probes for the c-erbB2 gene and the centromeric region of chromosome 17. Cell membrane immunostaining was seen in 10/18 (55.6%) AA cases, but unequivocal c-erbB2 gene amplification or chromosome 17 aneusomy was not seen. The results of this study suggest that c-erbB2 overexpression without amplification may occur early in breast oncogenesis. Amplification and numerical chromosome aberrations may occur later in the pathogenesis of apocrine-derived breast carcinomas. CI - Copyright 2000 John Wiley & Sons, Ltd. FAU - Selim, A G AU - Selim AG AD - Department of Histopathology, St. Bartholomew's Hospital, St. Bartholomew's and the Royal London School of Medicine and Dentistry, University of London, UK. a.a.selim@mds.qmw.ac.uk FAU - El-Ayat, G AU - El-Ayat G FAU - Wells, C A AU - Wells CA LA - eng PT - Journal Article PL - England TA - J Pathol JT - The Journal of pathology JID - 0204634 RN - 0 (DNA Probes) RN - 0 (Oncogene Proteins v-erbB) SB - IM MH - Adult MH - *Aneuploidy MH - Cell Membrane/genetics MH - Centromere MH - Chromosomes, Human, Pair 17/*genetics MH - DNA Probes MH - Female MH - Fibrocystic Breast Disease/*genetics MH - *Gene Amplification MH - Humans MH - In Situ Hybridization, Fluorescence MH - Middle Aged MH - Oncogene Proteins v-erbB/*genetics MH - Precancerous Conditions/genetics EDAT- 2000/06/22 10:00 MHDA- 2000/07/15 11:00 CRDT- 2000/06/22 10:00 PHST- 2000/06/22 10:00 [pubmed] PHST- 2000/07/15 11:00 [medline] PHST- 2000/06/22 10:00 [entrez] AID - 10.1002/(SICI)1096-9896(200006)191:2<138::AID-PATH611>3.0.CO;2-J [pii] AID - 10.1002/(SICI)1096-9896(200006)191:2<138::AID-PATH611>3.0.CO;2-J [doi] PST - ppublish SO - J Pathol. 2000 Jun;191(2):138-42. doi: 10.1002/(SICI)1096-9896(200006)191:2<138::AID-PATH611>3.0.CO;2-J.