1. FDA Approval Summary: Durvalumab and Pembrolizumab, Immune Checkpoint Inhibitors for the Treatment of Biliary Tract Cancer.
- Author
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Casak SJ, Kumar V, Song C, Yuan M, Amatya AK, Cheng J, Mishra-Kalyani PS, Tang S, Lemery SJ, Auth D, Davis G, Kluetz PG, Pazdur R, and Fashoyin-Aje LA
- Subjects
- Humans, United States, Male, Female, Aged, Middle Aged, Randomized Controlled Trials as Topic, Gemcitabine, Adult, Antibodies, Monoclonal, Humanized therapeutic use, Antibodies, Monoclonal, Humanized adverse effects, Antibodies, Monoclonal, Humanized administration & dosage, Antibodies, Monoclonal therapeutic use, Antibodies, Monoclonal administration & dosage, Antibodies, Monoclonal adverse effects, Biliary Tract Neoplasms drug therapy, Biliary Tract Neoplasms pathology, Drug Approval, Immune Checkpoint Inhibitors therapeutic use, Immune Checkpoint Inhibitors adverse effects, Immune Checkpoint Inhibitors administration & dosage, United States Food and Drug Administration, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Antineoplastic Combined Chemotherapy Protocols adverse effects
- Abstract
On September 2, 2022, the Food and Drug Administration (FDA) approved durvalumab in combination with cisplatin and gemcitabine, for the treatment of patients with unresectable or metastatic biliary tract cancers (BTC). On October 31, 2023, the FDA approved pembrolizumab in combination with cisplatin and gemcitabine for the same indication. Approvals were based on two randomized, multiregional, placebo-controlled trials that randomly allocated patients to receive durvalumab (TOPAZ-1) or pembrolizumab (KEYNOTE-966) in combination with chemotherapy or placebo in combination with chemotherapy. Overall survival (OS) was the primary endpoint in both studies. In both studies, a statistically significant and clinically meaningful improvement in OS was demonstrated. In the TOPAZ-1 trial, the median OS of patients receiving durvalumab was 12.8 months [95% confidence interval (CI), 11.1-14.0] and 11.5 months (95% CI, 10.1-12.5) in patients receiving placebo [hazard ratio (HR), 0.80 (95% CI, 0.66-0.97)]. In the KEYNOTE-966 trial, the median OS of patients receiving pembrolizumab was 12.7 months (95% CI, 11.5-13.6) and 10.9 months (95% CI, 9.9-11.6) in patients receiving placebo [HR, 0.83 (95% CI, 0.72-0.95)]. The addition of checkpoint inhibitors to standard of care chemotherapy for this indication did not reveal any new adverse event signals, and the safety profile was generally consistent with the known clinical experience with durvalumab, pembrolizumab, and the backbone chemotherapy regimen. The approvals of durvalumab and pembrolizumab in combination with standard of care cisplatin and gemcitabine for the treatment of unresectable or metastatic BTC add two new therapeutic options for these patients., (©2024 American Association for Cancer Research.)
- Published
- 2024
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