PMID- 34734431 OWN - NLM STAT- MEDLINE DCOM- 20220420 LR - 20220420 IS - 1365-2710 (Electronic) IS - 0269-4727 (Linking) VI - 47 IP - 4 DP - 2022 Apr TI - The efficacy and safety of immune checkpoint inhibitor in patients with relapsed small-cell lung cancer: A systematic review and meta-analysis. PG - 421-429 LID - 10.1111/jcpt.13552 [doi] AB - WHAT IS KNOWN AND OBJECTIVE: Immune checkpoint inhibitors (ICIs) have been approved for treating small-cell lung cancer (SCLC). However, the efficacy and safety profile of ICIs for relapsed SCLC remains under investigation. In this study, we assessed the efficacy and safety of ICIs in the treatment of relapsed SCLC patients. METHODS: The databases, including Pubmed, Embase, and the Cochrane library, were systematically searched to retrieve potential eligible studies from the establishment of the database to May 2021. The primary outcomes were survival, treatment responses, and safety. Randomized controlled trials and real-world studies that met the inclusion criteria were included. The RevMan 5.4 and R software were used for meta-analysis. RESULTS AND DISCUSSION: A total of eight articles involving 653 patients was included. Meta-analyses results showed that the overall response rate (objective response rate [ORR]) of the ICIs group was 0.12 (95% confidence interval [CI]: 0.07-0.18). The median overall survival was 7.97 (95% CI: 5.94-9.47) months, while the progression-free survival was 1.70 (95% CI: 1.40-2.28) months. Although chemotherapy showed a favourable ORR (odds ratio [OR] = 0.74; 95% CI: 0.39-1.41; p = 0.36) and a significantly better disease control rate (OR = 0.28; 95% CI: 0.11-0.70; p = 0.007), patients treated with ICIs had a reduced risk of mortality (hazard ratio = 0.87; 95% CI: 0.73-1.03; p = 0.10). With regards to adverse events (AEs), the rates of any AEs and >/=grade 3 AEs were 0.56 (95% CI: 0.52-0.60) and 0.13 (95%CI: 0.06-0.20), respectively. WHAT IS NEW AND CONCLUSION: For relapsed SCLC patients, the administration of ICIs resulted in a similar survival outcome and acceptable safety compared with chemotherapy. Further studies are needed to explore potential biomarkers for relapsed SCLC patients who may benefit from immunotherapy. CI - (c) 2021 John Wiley & Sons Ltd. FAU - Xu, Yulian AU - Xu Y AUID- ORCID: 0000-0003-0608-544X AD - Department of Oncology, Zaoyang First People's Hospital, Xiangyang, Hubei, China. FAU - Chen, Mingxian AU - Chen M AD - Department of Oncology, Zaoyang First People's Hospital, Xiangyang, Hubei, China. FAU - Ding, Yanpeng AU - Ding Y AD - Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China. FAU - Guo, Feng AU - Guo F AD - Department of Oncology, Zaoyang First People's Hospital, Xiangyang, Hubei, China. FAU - Chen, Min AU - Chen M AD - Department of Gynecology, Zaoyang First People's Hospital, Xiangyang, Hubei, China. FAU - Lu, Tianzhen AU - Lu T AD - Department of Gastroenterology, Zaoyang First People's Hospital, Xiangyang, Hubei, China. LA - eng PT - Journal Article PT - Meta-Analysis PT - Review PT - Systematic Review DEP - 20211103 PL - England TA - J Clin Pharm Ther JT - Journal of clinical pharmacy and therapeutics JID - 8704308 RN - 0 (Immune Checkpoint Inhibitors) SB - IM MH - Humans MH - Immune Checkpoint Inhibitors/adverse effects MH - *Lung Neoplasms/drug therapy MH - Neoplasm Recurrence, Local/drug therapy MH - Progression-Free Survival MH - *Small Cell Lung Carcinoma/drug therapy OTO - NOTNLM OT - immune checkpoint inhibitor OT - meta-analysis OT - relapsed OT - small-cell lung cancer OT - survival EDAT- 2021/11/05 06:00 MHDA- 2022/04/21 06:00 CRDT- 2021/11/04 06:41 PHST- 2021/10/13 00:00 [revised] PHST- 2021/08/26 00:00 [received] PHST- 2021/10/17 00:00 [accepted] PHST- 2021/11/05 06:00 [pubmed] PHST- 2022/04/21 06:00 [medline] PHST- 2021/11/04 06:41 [entrez] AID - 10.1111/jcpt.13552 [doi] PST - ppublish SO - J Clin Pharm Ther. 2022 Apr;47(4):421-429. doi: 10.1111/jcpt.13552. Epub 2021 Nov 3.