PMID- 12635130 OWN - NLM STAT- MEDLINE DCOM- 20030606 LR - 20151119 IS - 0022-3417 (Print) IS - 0022-3417 (Linking) VI - 199 IP - 4 DP - 2003 Apr TI - The clinical evaluation of HER-2 status: which test to use? PG - 411-7 AB - Accurate determination of the status of the type I receptor tyrosine kinase HER-2 in breast carcinomas provides significant insight into patient prognosis and may also inform selection of chemotherapeutic and hormonal treatments. At present, however, the single most important application of HER-2 testing is in the selection of patients for treatment with targeted therapies such as Herceptin. Although, based on current literature, fluorescence in situ hybridization (FISH) detection of HER-2 gene amplification may provide more accurate information in this context, this method is not yet widely available. Therefore, screening by immunohistochemistry (IHC) for HER-2 protein, backed by rigorous quality controls and FISH testing of equivocal cases with intermediate staining intensity, remains the current practice. In laboratories with highly standardized testing and quality assurance procedures, this protocol appears highly effective. Improvements in fixation procedures, standardization of antibodies, and use of automated image analysis may all increase the precision of IHC testing. However, on the basis of current data, there is a case to be made for the wider implementation of FISH testing to determine HER-2 status in breast cancer. CI - Copyright 2003 John Wiley & Sons, Ltd. FAU - Bartlett, John AU - Bartlett J AD - University Department of Surgery, Glasgow Royal Infirmary, Glasgow, UK. j.m.bartlett@clinmed.gla.ac.uk FAU - Mallon, Elizabeth AU - Mallon E FAU - Cooke, Tim AU - Cooke T LA - eng PT - Comment PT - Journal Article PT - Review PL - England TA - J Pathol JT - The Journal of pathology JID - 0204634 RN - 0 (Biomarkers, Tumor) RN - 0 (Neoplasm Proteins) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM CON - J Pathol. 2003 Apr;199(4):418-23. PMID: 12635131 MH - Biomarkers, Tumor/*analysis MH - Breast Neoplasms/*chemistry MH - Female MH - Humans MH - Immunohistochemistry MH - Neoplasm Proteins/analysis MH - Observer Variation MH - Quality Control MH - Receptor, ErbB-2/*analysis MH - Reproducibility of Results RF - 72 EDAT- 2003/03/14 04:00 MHDA- 2003/06/07 05:00 CRDT- 2003/03/14 04:00 PHST- 2003/03/14 04:00 [pubmed] PHST- 2003/06/07 05:00 [medline] PHST- 2003/03/14 04:00 [entrez] AID - 10.1002/path.1354 [doi] PST - ppublish SO - J Pathol. 2003 Apr;199(4):411-7. doi: 10.1002/path.1354.