PMID- 21517254 OWN - NLM STAT- MEDLINE DCOM- 20120530 LR - 20170308 IS - 2476-762X (Electronic) IS - 1513-7368 (Linking) VI - 12 IP - 1 DP - 2011 TI - Immunohistochemical (IHC) HER-2/neu and fluorescent-in situ hybridization (FISH) gene amplification of breast cancer in Indian women. PG - 179-83 AB - BACKGROUND: The concordance rate between immunohistochemical (IHC) and fluorescence in situ hybridization (FISH) results for HER2/neu according to clinical performance is controversial. The present prospective study was theerefore conducted in Indian breast cancer patients. METHODS: Fifty cases (n=50) of invasive duct cancer of breast tested for HER-2/neu by IHC and scored as 0, 1+, 2+ and 3+ by pathologists were further analyzed by FISH using a commercially available double-color probe, and the findings compared. RESULTS: A total concordance of 82.0% was observed with a Kappa coefficient of 0.640 (P <0.001). A high discordance was observed in 30.0% of the patients with IHC 2+, 7.1% in IHC 3+, 19.2% overall in IHC 0 and 1+. CONCLUSION: IHC can be used firstly to screen the HER-2/neu status, and FISH can be used as a supplementary role to IHC and 2+ and some negative cases. And only those cases with HER-2/neu status of IHC 3+ or FISH positive should be treated with Herceptin (Trastuzumab). FAU - Singhai, Rajeev AU - Singhai R AD - Department of Biochemistry, Grant Medical College and Sir J J Group of Hospitals, Mumbai, India. dr.rajeevj@gmail.com FAU - Patil, Vw AU - Patil V FAU - Patil, Av AU - Patil A LA - eng PT - Journal Article PL - Thailand TA - Asian Pac J Cancer Prev JT - Asian Pacific journal of cancer prevention : APJCP JID - 101130625 RN - 0 (Antibodies, Monoclonal, Humanized) RN - EC 2.7.10.1 (ERBB2 protein, human) RN - EC 2.7.10.1 (Receptor, ErbB-2) RN - P188ANX8CK (Trastuzumab) SB - IM MH - Antibodies, Monoclonal, Humanized/therapeutic use MH - Breast Neoplasms/drug therapy/*enzymology/*genetics MH - Carcinoma, Ductal, Breast/drug therapy/enzymology/genetics MH - Female MH - Gene Amplification MH - Humans MH - Immunohistochemistry/methods MH - In Situ Hybridization, Fluorescence/methods MH - India MH - Prospective Studies MH - Receptor, ErbB-2/*genetics MH - Trastuzumab EDAT- 2011/04/27 06:00 MHDA- 2012/05/31 06:00 CRDT- 2011/04/27 06:00 PHST- 2011/04/27 06:00 [entrez] PHST- 2011/04/27 06:00 [pubmed] PHST- 2012/05/31 06:00 [medline] PST - ppublish SO - Asian Pac J Cancer Prev. 2011;12(1):179-83.