PMID- 31594682 OWN - NLM STAT- MEDLINE DCOM- 20200330 LR - 20200330 IS - 1618-0631 (Electronic) IS - 0344-0338 (Linking) VI - 215 IP - 11 DP - 2019 Nov TI - Differential expression of HER2 and downstream proteins in prediction of advanced tumor phenotypes and overall survival of patients with Epstein-Barr virus-positive vs. negative gastric cancers. PG - 152675 LID - S0344-0338(19)31206-3 [pii] LID - 10.1016/j.prp.2019.152675 [doi] AB - This study evaluated the associations of HER2 protein, HER2 gene amplification, and positivity for p-AKT, p-ERK, and p-PLCgamma proteins with clinicopathological status and overall survival (OS) of patients who had Epstein-Barr virus-associated gastric cancer (EBVaGC; n = 58) or EBV-negative GC (EBVnGC; n = 329). Tissue samples were subjected to immunohistochemistry and fluorescence in situ hybridization (FISH). Results showed that EBVaGC less expressed HER2 and amplified HER2 gene. p-AKT (p =  0.035) and p-ERK (p =  0.001) were inhibited in EBVaGC than in EBVnGC, while p-PLCgamma (p =  0.034) was upregulated. Among EBVaGC patients, p-ERK positivity was associated with Lauren classification (p = 0.023), and p-PLCgamma positivity was inversely associated with TNM stage (p = 0.041) and lymph node metastasis (p = 0.041). In contrast, among EBVnGC patients, HER2 expression was associated with distant metastasis (p = 0.043) and p-AKT positivity was associated with intestinal subtype (p < 0.004), lymph node metastasis (p = 0.031), distant metastasis (p < 0.001), and elder age (>60y, p < 0.004). Overall analysis showed that EBVaGC patients presented better OS than EBVnGC patients (p = 0.044). Among EBVaGC patients, p-AKT positivity (p = 0.008) was associated with worse OS; as well as, HER2 high expression (p < 0.001), p-AKT positivity (p = 0.010), and p-PLCgamma (p <  0.001) were associated with worse OS in EBVnGC patients. Multivariate analysis showed that distant metastasis (95% CI: 1.559 to 4.028, p <  0.001), HER2 high expression (95% CI: 1.058 to 2.454, p =  0.026), and p-PLCgamma positivity (95% CI: 1.056 to 2.435, p = 0.027) were independent prognostic predictors of OS in EBVnGC patients. Our results indicated that p-AKT positive patients presented worse OS than p-AKT negative ones in EBVaGC, as well as, HER2, p-AKT, and p-PLCgamma are prognostic biomarkers for OS in EBVnGC patients. CI - Copyright (c) 2019 Elsevier GmbH. All rights reserved. FAU - Zhang, Yi-Wang AU - Zhang YW AD - Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China. FAU - He, Dan AU - He D AD - Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China. FAU - Tan, Cui AU - Tan C AD - Department of Pathology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107 Yangtze River Road, Guangzhou 510120, Guangdong Province, China. FAU - Dong, Min AU - Dong M AD - Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China. FAU - Zhou, Lu AU - Zhou L AD - Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China. FAU - Shao, Chun-Kui AU - Shao CK AD - Department of Pathology, The Third Affiliated Hospital, Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China. Electronic address: chunkuishao2011@163.com. LA - eng PT - Journal Article DEP - 20190927 PL - Germany TA - Pathol Res Pract JT - Pathology, research and practice JID - 7806109 RN - 0 (Biomarkers, Tumor) RN - EC 2.7.10.1 (ERBB2 protein, human) RN - EC 2.7.10.1 (Receptor, ErbB-2) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 3.1.4.3 (Phospholipase C gamma) SB - IM MH - Adenocarcinoma/*metabolism/mortality/*virology MH - Adult MH - Aged MH - Aged, 80 and over MH - Biomarkers, Tumor/analysis MH - Epstein-Barr Virus Infections/complications MH - Female MH - Herpesvirus 4, Human MH - Humans MH - Kaplan-Meier Estimate MH - Male MH - Middle Aged MH - Phenotype MH - Phospholipase C gamma/metabolism MH - Proto-Oncogene Proteins c-akt/metabolism MH - Receptor, ErbB-2/*biosynthesis MH - Stomach Neoplasms/*metabolism/mortality/*virology OTO - NOTNLM OT - Biomarker OT - Epstein-Barr virus OT - Gastric cancer OT - HER2 OT - Prognosis EDAT- 2019/10/09 06:00 MHDA- 2020/03/31 06:00 CRDT- 2019/10/10 06:00 PHST- 2019/06/17 00:00 [received] PHST- 2019/09/17 00:00 [revised] PHST- 2019/09/27 00:00 [accepted] PHST- 2019/10/09 06:00 [pubmed] PHST- 2020/03/31 06:00 [medline] PHST- 2019/10/10 06:00 [entrez] AID - S0344-0338(19)31206-3 [pii] AID - 10.1016/j.prp.2019.152675 [doi] PST - ppublish SO - Pathol Res Pract. 2019 Nov;215(11):152675. doi: 10.1016/j.prp.2019.152675. Epub 2019 Sep 27.