PMID- 37727917 OWN - NLM STAT- MEDLINE DCOM- 20230921 LR - 20231002 IS - 1976-2437 (Electronic) IS - 0513-5796 (Print) IS - 0513-5796 (Linking) VI - 64 IP - 10 DP - 2023 Oct TI - Rechallenge with Anti-PD-1 Inhibitors in Patients with Recurrent Gynecologic Malignancies. PG - 587-592 LID - 10.3349/ymj.2023.0063 [doi] AB - PURPOSE: We investigated the treatment outcomes of immune checkpoint inhibitor (ICI) rechallenge in patients with recurrent gynecologic cancers. MATERIALS AND METHODS: We retrospectively reviewed the medical records of 20 patients who underwent rechallenge with PD-1 inhibitors for recurrent gynecologic cancers at two tertiary centers between January 2018 and September 2022. RESULTS: The median age of the patients was 56 years (range, 35-79). Seven (35%), 1 (5%), 11 (55%), and 1 (5%) patients presented with cervical, vulvar, ovarian, and endometrial cancers, respectively. Sixteen (80%) patients received pembrolizumab and 4 (20%) received nivolumab at first treatment. Eight (40%) and 12 (60%) patients received pembrolizumab and nivolumab, respectively, at second treatment. At initial ICI treatment, 1 (5%) and 4 (20%) cases of a complete response (CR) and a partial response (PR) were observed, respectively, with a median progression-free survival (PFS) of 2.8 months (range, 1.4-49.6). Reasons for first ICI discontinuation were disease progression (n=16), severe adverse events (AEs) (n=2), and treatment withdrawal (n=2). During second ICI treatment, 1 (5%) patient achieved CR, 2 (10%) showed PR, and 5 (25%) experienced stable disease. The median PFS to second ICI was 1.8 months (range, 0.4-10.4). The median overall survival was 21.3 months (range, 10.1-52.7). Neither patient who discontinued ICI treatment due to AEs experienced AE relapse during second ICI treatment. CONCLUSION: These results suggest that responses to ICI rechallenge are not as intolerable as responses to previous ICI. Clinicians should carefully consider rechallenge with PD-1 inhibitors outside of clinical trials until there are sufficient data to routinely support this practice. CI - (c) Copyright: Yonsei University College of Medicine 2023. FAU - Kim, Migang AU - Kim M AUID- ORCID: 0000-0001-6950-0693 AD - Comprehensive Gynecologic Cancer Center, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea. FAU - Chang, Chi-Son AU - Chang CS AUID- ORCID: 0000-0002-0169-2008 AD - Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. FAU - Choi, Min Chul AU - Choi MC AUID- ORCID: 0000-0003-4509-6731 AD - Comprehensive Gynecologic Cancer Center, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea. oursk79@cha.ac.kr. FAU - Lee, Jeong-Won AU - Lee JW AUID- ORCID: 0000-0002-6110-4909 AD - Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. garden.lee@samsung.com. FAU - Park, Hyun AU - Park H AUID- ORCID: 0000-0002-7825-9165 AD - Comprehensive Gynecologic Cancer Center, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea. FAU - Joo, Won Duk AU - Joo WD AUID- ORCID: 0000-0003-4637-6946 AD - Comprehensive Gynecologic Cancer Center, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea. LA - eng PT - Journal Article PL - Korea (South) TA - Yonsei Med J JT - Yonsei medical journal JID - 0414003 RN - 0 (Immune Checkpoint Inhibitors) RN - 31YO63LBSN (Nivolumab) SB - IM MH - Humans MH - Female MH - Adult MH - Middle Aged MH - Aged MH - *Genital Neoplasms, Female MH - Immune Checkpoint Inhibitors/adverse effects MH - Nivolumab/therapeutic use MH - Retrospective Studies MH - Chronic Disease MH - Recurrence PMC - PMC10522879 OTO - NOTNLM OT - Gynecologic malignancy OT - immune checkpoint inhibitor OT - rechallenge OT - recurrence COIS- The authors have no potential conflicts of interest to disclose. EDAT- 2023/09/20 06:42 MHDA- 2023/09/21 06:42 PMCR- 2023/10/01 CRDT- 2023/09/20 04:03 PHST- 2023/03/30 00:00 [received] PHST- 2023/06/30 00:00 [revised] PHST- 2023/07/26 00:00 [accepted] PHST- 2023/09/21 06:42 [medline] PHST- 2023/09/20 06:42 [pubmed] PHST- 2023/09/20 04:03 [entrez] PHST- 2023/10/01 00:00 [pmc-release] AID - 64.587 [pii] AID - 10.3349/ymj.2023.0063 [doi] PST - ppublish SO - Yonsei Med J. 2023 Oct;64(10):587-592. doi: 10.3349/ymj.2023.0063.