Study of Pembrolizumab (MK-3475) Versus Placebo in Participants With Esophageal Carcinoma Who Are Receiving Chemotherapy and Radiation Therapy (MK-3475-975/KEYNOTE-975)
Summary
The purpose of this study is to assess the efficacy and safety of treatment with definitive chemoradiotherapy (dCRT) + pembrolizumab (MK-3475) compared to treatment with dCRT + placebo with respect to Event-free Survival (EFS) and Overall Survival (OS) in: * participants whose tumors express Programmed Death-Ligand 1 (PD-L1) Combined Positive Score (CPS) ≥10 * participants whose tumors express PD-L1 CPS ≥1 * all participants The primary study hypotheses are that dCRT+ pembrolizumab is better than dCRT + placebo with respect to: * EFS in participants whose tumors express PD-L1 CPS ≥10 * EFS in participants whose tumors express PD-L1 CPS ≥1 * EFS in all participants * OS in participants whose tumors express PD-L1 CPS ≥10 * OS in participants whose tumors express PD-L1 CPS ≥1 * OS in all participants
Timeline
- Start
- 2020-02-28
- Primary completion
- 2026-01-21
- Completion
- 2026-06-26
Drugs
| Evaluation | Drug | Modality | Dose | Route |
|---|---|---|---|---|
| Subject | Pembrolizumab | Monoclonal antibody | 200 mg | Intravenous |
| Subject | Pembrolizumab | Monoclonal antibody | 400 mg | Intravenous |
| Background | Cisplatin | Other / unclassified | 75 mg/m2 | Intravenous |
| Background | Leucovorin | Small molecule | 400 mg/m2 | Intravenous |
| Background | Levoleucovorin | Unknown | 200 mg/m2 | Intravenous |
| Background | Oxaliplatin | Small molecule | 85 mg/m2 | Intravenous |
| Background | fluorouracil | Small molecule | 400 mg/m2 | Intravenous |
| Background | fluorouracil | Small molecule | 800 mg/m2 | Intravenous |
| Background | fluorouracil | Small molecule | 1000 mg/m2 | Intravenous |