PMID- 33123197 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220417 IS - 1687-8450 (Print) IS - 1687-8469 (Electronic) IS - 1687-8450 (Linking) VI - 2020 DP - 2020 TI - Significance of Detection of the HER2 Gene and PD-1/PD-L1 in Gastric Cancer. PG - 8678945 LID - 10.1155/2020/8678945 [doi] LID - 8678945 AB - OBJECTIVE: To explore the relationship between the HER2 gene and PD-1/PD-L1 in gastric cancer and its significance. METHODS: Immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) were used to detect HER2 protein expression, HER2 gene amplification, and PD-1/PD-L1 expression in 78 cases of gastric cancer. RESULTS: The expression rate of HER2 protein was 43.6% (34/78), of which 19.4% (14/78) were HER2 3+, 14.1% (11/78) were HER2 2+, and 11.5% (9/78) were HER2 1+. The results showed that 19.2% (15/78) of samples had HER2 gene amplification, 3.8% (3/78) of samples had a HER2/CEP17 ratio <2.0, and 19.2% (15/78) of samples had HER2 gene amplificationf and HER2 copy/cell >/=6.0, as detected by FISH. The positive rate of PD-L1 was 38.5% (30/78) in gastric cancer cells and 50.0% (39/78) in interstitial lymphocytes. The expression of the HER2 gene, PD-L1, and PD-1 in gastric cancer was correlated with the stage and lymph node metastasis of gastric cancer (P < 0.05). CONCLUSIONS: The combined detection of the HER2 gene and PD-1/PD-L1 in gastric cancer provides an important reference index for the prognosis of gastric cancer and the benefit of targeted antitumor drugs. CI - Copyright (c) 2020 Tian Yun et al. FAU - Yun, Tian AU - Yun T AUID- ORCID: 0000-0003-3015-2577 AD - People's Liberation Army Joint Logistic Support Force 989th Hospital, LuoYang, Henan 471031, China. FAU - Wang, Sunan AU - Wang S AD - ShenZhen Polytechnic, ShenZhen 518110, China. FAU - Jiang, Bo AU - Jiang B AD - People's Liberation Army Joint Logistic Support Force 990th Hospital, ZhuMaDian, Henan 463000, China. FAU - Wang, Changsong AU - Wang C AD - People's Liberation Army Joint Logistic Support Force 989th Hospital, LuoYang, Henan 471031, China. FAU - Meng, Nianlong AU - Meng N AD - People's Liberation Army Joint Logistic Support Force 989th Hospital, LuoYang, Henan 471031, China. FAU - Yuan, Xutao AU - Yuan X AD - People's Liberation Army Joint Logistic Support Force 989th Hospital, LuoYang, Henan 471031, China. FAU - Wang, Yangkun AU - Wang Y AUID- ORCID: 0000-0002-9970-3093 AD - Department of Pathology, ShenZhen Hospital, Southern Medical University, ShenZhen 518110, China. LA - eng PT - Journal Article DEP - 20201013 PL - Egypt TA - J Oncol JT - Journal of oncology JID - 101496537 PMC - PMC7584973 COIS- The authors declare that they have no conflicts of interest to this work. EDAT- 2020/10/31 06:00 MHDA- 2020/10/31 06:01 PMCR- 2020/10/13 CRDT- 2020/10/30 05:54 PHST- 2020/06/07 00:00 [received] PHST- 2020/08/05 00:00 [revised] PHST- 2020/09/29 00:00 [accepted] PHST- 2020/10/30 05:54 [entrez] PHST- 2020/10/31 06:00 [pubmed] PHST- 2020/10/31 06:01 [medline] PHST- 2020/10/13 00:00 [pmc-release] AID - 10.1155/2020/8678945 [doi] PST - epublish SO - J Oncol. 2020 Oct 13;2020:8678945. doi: 10.1155/2020/8678945. eCollection 2020.