PMID- 21980624 OWN - NLM STAT- MEDLINE DCOM- 20111219 LR - 20161020 IS - 0884-6812 (Linking) VI - 33 IP - 4 DP - 2011 Aug TI - Determination of HER2 gene status by fully automated fluorescence microscopy. PG - 205-10 AB - OBJECTIVE: To examine fluorescence in situ hybridization (FISH) in HER2 amplification in response rates to trastuzumab therapy and both taxane and anthracycline-based chemotherapy regimens. STUDY DESIGN: A total of 400 tumor sections were analyzed over an 8-month period. The sections were hybridized with probes for the HER2 gene and chromosome 17 centromere using standard FISH methods and analyzed on an automated fluorescence microscopy system. RESULTS: Reliable and valid methods for identification of the patients that will respond to treatment with trastuzumab are needed in order to achieve maximum therapy efficacy and maintain cost efficiency. FISH-based analysis is potentially an objective and reproducible approach to determination of HER2 gene status; however, manual FISH counting is a laborious task and subject to inter and intraobserver variability. CONCLUSION: The system described in this paper is a valuable tool in providing a consistent approach to the interpretation of breast tumor tissue analyzed by FISH analysis. In addition to consistency, an automated system provides a record of the images produced that can be of immediate benefit in multiple review of a difficult or equivocal case and long-term benefit in terms of providing a permanent case record. FAU - Kilpatrick, Michael W AU - Kilpatrick MW AD - Department of Pathology and Laboratory Medicine, Albany Medical College, Albany, New York 12208, USA. FAU - Sheehan, Christine E AU - Sheehan CE FAU - Marganski, William A AU - Marganski WA FAU - Tafas, Triantafyllos AU - Tafas T FAU - Ross, Merrill S AU - Ross MS FAU - Ross, Jeffrey S AU - Ross JS LA - eng PT - Journal Article PL - United States TA - Anal Quant Cytol Histol JT - Analytical and quantitative cytology and histology JID - 8506819 RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Breast Neoplasms/*metabolism MH - Chromosomes, Human, Pair 17/genetics MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence/methods MH - Microscopy, Fluorescence MH - Receptor, ErbB-2/genetics/*metabolism EDAT- 2011/10/08 06:00 MHDA- 2011/12/20 06:00 CRDT- 2011/10/08 06:00 PHST- 2011/10/08 06:00 [entrez] PHST- 2011/10/08 06:00 [pubmed] PHST- 2011/12/20 06:00 [medline] PST - ppublish SO - Anal Quant Cytol Histol. 2011 Aug;33(4):205-10.