PMID- 9267826 OWN - NLM STAT- MEDLINE DCOM- 19971014 LR - 20141120 IS - 0893-3952 (Print) IS - 0893-3952 (Linking) VI - 10 IP - 8 DP - 1997 Aug TI - Identification of HER-2/neu oncogene amplification by fluorescence in situ hybridization in stage I endometrial carcinoma. PG - 823-31 AB - Prognostic factors capable of detecting potential for aggressive disease in early stage endometrial cancer might be useful in selecting patients for early adjuvant therapy. Sixty-three patients with surgical Stage I endometrial carcinoma treated by hysterectomy with a mean follow-up of 55 months were evaluated for tumor type, grade, depth of myometrial invasion, presence of vascular invasion, DNA ploidy, and HER-2/neu overexpression by immunohistochemical techniques. These results were compared with HER-2/neu gene amplifications evaluated by fluorescence in situ hybridization (FISH) and their ability to predict disease survival. For FISH, sections 5 microns thick of formalin-fixed, paraffin-embedded tissues were processed using the Oncor Chromosome In Situ Hybridization System. Automated hybridization using the Ventana Gen was performed with the Oncor unique sequence digoxigenin-labeled HER-2/neu DNA probe. Gene copy numbers were evaluated using the Zeiss Axioskop50 fluorescence microscope. HER-2/neu amplification was noted in 24 (38%) of 63 cases. By multivariate analysis, only aneuploidy (P = .04) and HER-2/neu amplification by FISH (P = .04) independently correlated with survival. Although we saw a relationship between HER-2/neu protein expression and gene amplification, this trend did not achieve statistical significance. HER-2/neu oncogene amplification can be assessed using automated FISH on formalin-fixed, paraffin-embedded tissue. HER-2/ neu amplification predicts poor outcome in Stage I endometrial cancer. HER-2/neu amplification status has potential use in the identification of patients with high risk of disease recurrence who might benefit from intensified therapy. FAU - Riben, M W AU - Riben MW AD - Department of Pathology, Albany Medical Center, New York 12208, USA. FAU - Malfetano, J H AU - Malfetano JH FAU - Nazeer, T AU - Nazeer T FAU - Muraca, P J AU - Muraca PJ FAU - Ambros, R A AU - Ambros RA FAU - Ross, J S AU - Ross JS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Mod Pathol JT - Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc JID - 8806605 RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Aneuploidy MH - Endometrial Neoplasms/diagnosis/*genetics/metabolism/mortality MH - Female MH - *Gene Amplification MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Middle Aged MH - Multivariate Analysis MH - Prognosis MH - Receptor, ErbB-2/*genetics/metabolism MH - Survival Rate EDAT- 1997/08/01 00:00 MHDA- 1997/08/01 00:01 CRDT- 1997/08/01 00:00 PHST- 1997/08/01 00:00 [pubmed] PHST- 1997/08/01 00:01 [medline] PHST- 1997/08/01 00:00 [entrez] PST - ppublish SO - Mod Pathol. 1997 Aug;10(8):823-31.