PMID- 32234921 OWN - NLM STAT- MEDLINE DCOM- 20200420 LR - 20200420 IS - 1791-7530 (Electronic) IS - 0250-7005 (Linking) VI - 40 IP - 4 DP - 2020 Apr TI - Efficacy of Cytotoxic Agents After Progression on Anti-PD-(L)1 Antibody for Pre-treated Metastatic Gastric Cancer. PG - 2247-2255 LID - 10.21873/anticanres.14187 [doi] AB - BACKGROUND/AIM: The efficacy of treatment using the anti-programmed cell death-1 (anti-PD-1) antibody for metastatic gastric cancer (mGC) has been established previously. Exploratory analyses in various types of tumours suggest that prior exposure to immune checkpoint inhibitors can enhance the efficacy of subsequent cytotoxic chemotherapy (CTx). Our aim is to evaluate the efficacy and safety of CTx for mGC after progression on anti-PD-(ligand) 1 [anti-PD-(L)1] antibody. PATIENTS AND METHODS: We retrospectively evaluated patients with mGC who underwent CTx. The patients received CTx after progression on anti-PD-(L)1 antibody (cohort A) or as a third-line treatment without prior exposure to anti-PD-(L)1 antibody (cohort B). We evaluated: i) clinical characteristics, ii) efficacies, iii) prognoses, and iv) adverse events (AEs). RESULTS: In cohorts A and B, 16 and 68 patients fulfilled the criteria, respectively. In the univariate analysis, the overall response rate was significantly higher in cohort A compared to cohort B (31% vs. 10%, respectively; Odds Ratio:3.96, 95% Confidence Interval:1.06-14.8, p=0.040). The multivariate analysis showed a similar trend. Immune-related AEs did not worsen and were manageable, while new immune-related AEs were not observed. CONCLUSION: CTx after progression on anti-PD-(L)1 antibody demonstrated a favourable efficacy in intensively treated patients with mGC. CI - Copyright(c) 2020, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved. FAU - Kato, Kyoko AU - Kato K AD - Department of Clinical Oncology, Aichi Cancer Centre Hospital, Aichi, Japan. FAU - Narita, Yukiya AU - Narita Y AD - Department of Clinical Oncology, Aichi Cancer Centre Hospital, Aichi, Japan yukiya.narita@aichi-cc.jp. FAU - Mitani, Seiichiro AU - Mitani S AD - Department of Clinical Oncology, Aichi Cancer Centre Hospital, Aichi, Japan. AD - Department of Medical Oncology, Kindai University Faculty of Medicine, Osaka, Japan. FAU - Honda, Kazunori AU - Honda K AD - Department of Clinical Oncology, Aichi Cancer Centre Hospital, Aichi, Japan. FAU - Masuishi, Toshiki AU - Masuishi T AD - Department of Clinical Oncology, Aichi Cancer Centre Hospital, Aichi, Japan. FAU - Taniguchi, Hiroya AU - Taniguchi H AD - Department of Clinical Oncology, Aichi Cancer Centre Hospital, Aichi, Japan. AD - Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Centre Hospital East, Chiba, Japan. FAU - Kadowaki, Shigenori AU - Kadowaki S AD - Department of Clinical Oncology, Aichi Cancer Centre Hospital, Aichi, Japan. FAU - Ura, Takashi AU - Ura T AD - Department of Clinical Oncology, Aichi Cancer Centre Hospital, Aichi, Japan. AD - Department of Clinical Oncology, National Hospital Organisation Kyoto Medical Centre, Kyoto, Japan. FAU - Ando, Masashi AU - Ando M AD - Department of Clinical Oncology, Aichi Cancer Centre Hospital, Aichi, Japan. FAU - Tajika, Masahiro AU - Tajika M AD - Department of Endoscopy, Aichi Cancer Centre Hospital, Aichi, Japan. FAU - Muro, Kei AU - Muro K AD - Department of Clinical Oncology, Aichi Cancer Centre Hospital, Aichi, Japan. LA - eng PT - Journal Article PL - Greece TA - Anticancer Res JT - Anticancer research JID - 8102988 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (B7-H1 Antigen) RN - 0 (Cytotoxins) RN - 0 (Programmed Cell Death 1 Receptor) RN - 31YO63LBSN (Nivolumab) RN - DPT0O3T46P (pembrolizumab) RN - KXG2PJ551I (avelumab) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antibodies, Monoclonal/administration & dosage MH - Antibodies, Monoclonal, Humanized/administration & dosage MH - Antineoplastic Combined Chemotherapy Protocols/*therapeutic use MH - B7-H1 Antigen/*antagonists & inhibitors/metabolism MH - Cytotoxins/administration & dosage MH - Female MH - Humans MH - Kaplan-Meier Estimate MH - Male MH - Middle Aged MH - Neoplasm Metastasis MH - Nivolumab/administration & dosage MH - Programmed Cell Death 1 Receptor/*antagonists & inhibitors/metabolism MH - Retrospective Studies MH - Stomach Neoplasms/*drug therapy/metabolism/pathology MH - Treatment Outcome OTO - NOTNLM OT - Anti-PD-(L)1 OT - chemotherapy OT - gastric cancer OT - immune checkpoint inhibitor EDAT- 2020/04/03 06:00 MHDA- 2020/04/21 06:00 CRDT- 2020/04/03 06:00 PHST- 2020/02/05 00:00 [received] PHST- 2020/02/20 00:00 [revised] PHST- 2020/02/25 00:00 [accepted] PHST- 2020/04/03 06:00 [entrez] PHST- 2020/04/03 06:00 [pubmed] PHST- 2020/04/21 06:00 [medline] AID - 40/4/2247 [pii] AID - 10.21873/anticanres.14187 [doi] PST - ppublish SO - Anticancer Res. 2020 Apr;40(4):2247-2255. doi: 10.21873/anticanres.14187.