PMID- 20855644 OWN - NLM STAT- MEDLINE DCOM- 20101018 LR - 20151119 IS - 1943-7722 (Electronic) IS - 0002-9173 (Linking) VI - 134 IP - 4 DP - 2010 Oct TI - The reliability of rabbit monoclonal antibodies in the immunohistochemical assessment of estrogen receptors, progesterone receptors, and HER2 in human breast carcinomas. PG - 621-32 LID - 10.1309/AJCPOG3O3KTPZQNK [doi] AB - The reliability of the rabbit monoclonal antibodies SP1, SP2, SP3, and 4B5 was immunohistochemically assessed on a range of 96 invasive breast carcinomas and the results compared with those achieved with established antibody markers for estrogen receptors (6F11), progesterone receptors (PgR636), and HER2 (polyclonal A0485 and clone CB11), with HER2 status validated by fluorescence in situ hybridization (FISH) and silver in situ hybridization. Optimal results depended on the duration of microwave antigen-retrieval time and the use of a high pH buffer for rabbit and mouse estrogen receptor antibodies (SP1 and 6F11), although only on antigen-retrieval duration for the progesterone receptors SP2 and PgR636. The highest rate of concordance between HER2 overexpression and HER2 gene amplification was with the rabbit monoclonal antibodies (SP3 and 4B5) and FISH. Rabbit monoclonal antibodies are reliable alternatives to established antibody markers for the immunohistochemical testing of estrogen receptors, progesterone receptors, and HER2 in breast cancer. FAU - Rhodes, Anthony AU - Rhodes A AD - Faculty of Health & Life Sciences, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, England. FAU - Sarson, Julia AU - Sarson J FAU - Assam, Emma E AU - Assam EE FAU - Dean, Sarah J R AU - Dean SJ FAU - Cribb, Edward C AU - Cribb EC FAU - Parker, Andrew AU - Parker A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Am J Clin Pathol JT - American journal of clinical pathology JID - 0370470 RN - 0 (Antibodies, Monoclonal) RN - 0 (Biomarkers, Tumor) RN - 0 (Receptors, Estrogen) RN - 0 (Receptors, Progesterone) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Animals MH - *Antibodies, Monoclonal MH - Biomarkers, Tumor/*analysis MH - Breast Neoplasms/*chemistry/pathology MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Microarray Analysis/methods MH - Rabbits MH - Receptor, ErbB-2/*analysis MH - Receptors, Estrogen/*analysis MH - Receptors, Progesterone/*analysis EDAT- 2010/09/22 06:00 MHDA- 2010/10/19 06:00 CRDT- 2010/09/22 06:00 PHST- 2010/09/22 06:00 [entrez] PHST- 2010/09/22 06:00 [pubmed] PHST- 2010/10/19 06:00 [medline] AID - 134/4/621 [pii] AID - 10.1309/AJCPOG3O3KTPZQNK [doi] PST - ppublish SO - Am J Clin Pathol. 2010 Oct;134(4):621-32. doi: 10.1309/AJCPOG3O3KTPZQNK.