PMID- 34616674 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220427 IS - 2234-943X (Print) IS - 2234-943X (Electronic) IS - 2234-943X (Linking) VI - 11 DP - 2021 TI - Immune Checkpoint Inhibitors Plus Single-Agent Chemotherapy for Advanced Non-Small-Cell Lung Cancer After Resistance to EGFR-TKI. PG - 700023 LID - 10.3389/fonc.2021.700023 [doi] LID - 700023 AB - PURPOSE: Platinum-based chemotherapy remains the classic treatment option for patients with advanced non-small-cell lung cancer (NSCLC) who progress while receiving treatment with epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs). In this study, we analyzed real-world outcomes of treatment with immune checkpoint inhibitors (ICIs) combined with platinum-free chemotherapy in patients with NSCLC after developing resistance to EGFR-TKIs. METHODS: This retrospective study included patients with mutation-positive NSCLC after developing resistance to EGFR-TKIs. Patients who received chemotherapy alone plus ICIs with or without anti-angiogenic drugs (cohort A) or platinum-based chemotherapy (cohort B) between February 2019 and August 2020 were enrolled. Clinical characteristics, EGFR mutation status, response to therapy, and adverse events (AEs) were retrospectively analyzed. RESULTS: Seventeen patients were eligible and included in the analysis, including 8 in cohort A and 9 in cohort B. After a median follow-up of 7.6 months, the median progression-free survival was 6.5 months [95% confidence interval (CI), 6.1 to 7.0] in cohort A and 3.6 months (95% CI, 1.3-5.8) in cohort B (hazard ratios, 0.22; 95% CI, 0.05-0.93; P = 0.039). The overall response and disease control rates were 50% and 100% in cohort A, and 22% and 89% in cohort B, respectively. Adverse events of grade 3 or higher occurred in 25% of the patients in cohort A and in 33.3% of the patients in cohort B. CONCLUSION: ICIs plus platinum-free, single-agent chemotherapy provides promising progression-free survival and overall response rate benefit, along with a low rate of severe AEs in patients with EGFR-TKI-resistant advanced NSCLC. CI - Copyright (c) 2021 Deng, Lin, Xie, Yang, Wang, Wu, Liu, Xie, Qin and Zhou. FAU - Deng, Haiyi AU - Deng H AD - State Key Laboratory of Respiratory Disease, National Clinical Research Centre for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China. FAU - Lin, Xinqing AU - Lin X AD - State Key Laboratory of Respiratory Disease, National Clinical Research Centre for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China. FAU - Xie, Xiaohong AU - Xie X AD - State Key Laboratory of Respiratory Disease, National Clinical Research Centre for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China. FAU - Yang, Yilin AU - Yang Y AD - State Key Laboratory of Respiratory Disease, National Clinical Research Centre for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China. FAU - Wang, Liqiang AU - Wang L AD - State Key Laboratory of Respiratory Disease, National Clinical Research Centre for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China. FAU - Wu, Jianhui AU - Wu J AD - State Key Laboratory of Respiratory Disease, National Clinical Research Centre for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China. FAU - Liu, Ming AU - Liu M AD - State Key Laboratory of Respiratory Disease, National Clinical Research Centre for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China. FAU - Xie, Zhanhong AU - Xie Z AD - State Key Laboratory of Respiratory Disease, National Clinical Research Centre for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China. FAU - Qin, Yinyin AU - Qin Y AD - State Key Laboratory of Respiratory Disease, National Clinical Research Centre for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China. FAU - Zhou, Chengzhi AU - Zhou C AD - State Key Laboratory of Respiratory Disease, National Clinical Research Centre for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China. LA - eng PT - Journal Article DEP - 20210920 PL - Switzerland TA - Front Oncol JT - Frontiers in oncology JID - 101568867 PMC - PMC8488293 OTO - NOTNLM OT - epidermal growth factor receptor gene (EGFR) OT - immune checkpoint inhibitor OT - immunotherapy OT - non-small-cell lung cancer OT - single-agent chemotherapy COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/10/08 06:00 MHDA- 2021/10/08 06:01 PMCR- 2021/01/01 CRDT- 2021/10/07 06:59 PHST- 2021/04/25 00:00 [received] PHST- 2021/09/02 00:00 [accepted] PHST- 2021/10/07 06:59 [entrez] PHST- 2021/10/08 06:00 [pubmed] PHST- 2021/10/08 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 10.3389/fonc.2021.700023 [doi] PST - epublish SO - Front Oncol. 2021 Sep 20;11:700023. doi: 10.3389/fonc.2021.700023. eCollection 2021.