1. Cemiplimab monotherapy in Japanese patients with recurrent or metastatic cervical cancer.
- Author
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Hasegawa, Kosei, Takahashi, Shunji, Ushijima, Kimio, Okadome, Masao, Yonemori, Kan, Yokota, Harushige, Vergote, Ignace, Monk, Bradley J., Tewari, Krishnansu S., Fujiwara, Keiichi, Li, Jingjin, Jamil, Shaheda, Paccaly, Anne, Takehara, Kazuhiro, Usami, Tomoka, Aoki, Yoichi, Suzuki, Nao, Kobayashi, Yoichi, Yoshida, Yoshio, and Watari, Hidemichi
- Subjects
CANCER chemotherapy ,JAPANESE people ,CEMIPLIMAB ,CERVICAL cancer ,OVERALL survival - Abstract
Background: In the phase 3 EMPOWER‐Cervical 1/GOG‐3016/ENGOT‐cx9 study, cemiplimab significantly improved overall survival (OS) versus chemotherapy for patients with recurrent or metastatic cervical cancer who progressed after first‐line platinum‐based chemotherapy. We present a post hoc subgroup analysis of patients enrolled in Japan. Methods: Patients were enrolled regardless of programmed cell death‐ligand 1 status and randomized 1:1 to cemiplimab 350 mg intravenously every 3 weeks or investigator's choice single‐agent chemotherapy for up to 96 weeks. Primary endpoint was OS. Key secondary endpoints were progression‐free survival (PFS) and objective response rate (ORR). Results: Overall, 608 patients were randomized, of whom 56 (9.2%) were in Japan (cemiplimab, n = 29; chemotherapy, n = 27). The median (range) duration of follow‐up was 13.6 (6.0–25.3) versus 18.2 (6.0–38.2) months for patients in Japan and for the overall population, respectively. Median OS (95% confidence interval [CI]) was 8.4 (7.0‐not evaluable) and 9.4 (5.4–14.9) months for cemiplimab versus chemotherapy (hazard ratio [HR]: 0.86; 95% CI: 0.43–1.68). Median PFS (95% CI) was 4.0 (1.4–8.2) versus 3.7 (1.8–4.2) months with cemiplimab and chemotherapy (HR: 0.90; 95% CI: 0.50–1.61), respectively. ORR was 17.2% for cemiplimab and 7.4% for chemotherapy (odds ratio, 2.47; 95% CI, 0.44–13.99). Incidence of treatment‐emergent adverse events at any grade was 79.3% for cemiplimab and 100% for chemotherapy. Grade ≥3 adverse events were 37.9% versus 66.7% with cemiplimab and chemotherapy, respectively. Discussion: While acknowledging limitations inherent to a small subgroup analysis, the HR of 0.86 observed in Japanese patients suggests an emerging survival benefit despite a 4.6‐month shorter median duration of follow‐up versus the overall study population. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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