PMID- 21601111 OWN - NLM STAT- MEDLINE DCOM- 20110929 LR - 20141120 IS - 0242-6498 (Print) IS - 0242-6498 (Linking) VI - 31 IP - 2 DP - 2011 Apr TI - [HER2 and gastric cancer. Recommendations for clinical practice in 2011]. PG - 78-87 LID - 10.1016/j.annpat.2011.03.001 [doi] AB - Trastuzumab in combination with capecitabine or 5-fluorouracil and cisplatin has been approved by the European Medicines Agency (EMEA) for the treatment of patients with human epidermal growth factor receptor 2 (HER2)-positive (immunohistochemistry [IHC] 3+ or IHC 2+/ fluorescence in situ hybridization [FISH]-positive or IHC 2+/ silver in situ hybridization [SISH]-positive) metastatic adenocarcinoma of the stomach or gastro-esophageal (GE) junction. HER2 testing in gastric cancer (GC) differs from testing in breast cancer (BC) due to major differences in the tumor biology; as the disease is progressing rapidely, we recommend to test every GC at diagnosis and to offer a rapid testing (less than five days) in the metastatic setting. IHC should be the initial testing methodology and FISH or SISH should be used to retest IHC 2+ samples. As GC more frequently shows incomplete membrane staining and focal staining for HER2, HER2 testing guidelines have been adapted from BC protocols. The scoring system is slightly different in respect to the characteristics of GC. For in situ hybridization, SISH should be used in order to identify heterogeneous staining with a higher accuracy than FISH. Enrollment in training and quality assurance programs is highly recommended. In case of negativity on biopsy, it is recommended to retest for HER2, when possible, on surgical specimens and/or metastasis. This will ensure accurate and consistent HER2 testing results, which will allow the appropriate selection of patients eligible for treatment with trastuzumab. CI - Copyright (c) 2011. Published by Elsevier Masson SAS. FAU - Penault-Llorca, Frederique AU - Penault-Llorca F AD - Departement de pathologie, centre Jean-Perrin, BP 392, 58, rue Montalembert, 63011 Clermont-Ferrand cedex, France; EA 4233, universite d'Auvergne, 63000 Clermont-Ferrand cedex, France. fpenault@cjp.fr FAU - Chenard, Marie-Pierre AU - Chenard MP FAU - Bouche, Olivier AU - Bouche O FAU - Emile, Jean-Francois AU - Emile JF FAU - Bibeau, Frederic AU - Bibeau F FAU - Metges, Jean-Philippe AU - Metges JP FAU - Andre, Thierry AU - Andre T FAU - Monges, Genevieve AU - Monges G LA - fre PT - English Abstract PT - Journal Article PT - Practice Guideline TT - HER2 et cancer gastrique. Recommandations pour la pratique clinique en 2011. DEP - 20110507 PL - France TA - Ann Pathol JT - Annales de pathologie JID - 8106337 RN - EC 2.7.10.1 (ERBB2 protein, human) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Adenocarcinoma/chemistry/*pathology MH - Humans MH - *Receptor, ErbB-2/analysis MH - Stomach Neoplasms/chemistry/*pathology EDAT- 2011/05/24 06:00 MHDA- 2011/10/01 06:00 CRDT- 2011/05/24 06:00 PHST- 2010/12/30 00:00 [received] PHST- 2011/03/09 00:00 [revised] PHST- 2011/03/12 00:00 [accepted] PHST- 2011/05/24 06:00 [entrez] PHST- 2011/05/24 06:00 [pubmed] PHST- 2011/10/01 06:00 [medline] AID - S0242-6498(11)00048-4 [pii] AID - 10.1016/j.annpat.2011.03.001 [doi] PST - ppublish SO - Ann Pathol. 2011 Apr;31(2):78-87. doi: 10.1016/j.annpat.2011.03.001. Epub 2011 May 7.