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Clinical Trial 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


Clinical Trial Description

Participants receive pembrolizumab or placebo PLUS one of two chemotherapy regimens PLUS radiation therapy for up to approximately one year. The chemotherapy regimens are either: - FP (5-fluorouracil [5-FU] + cisplatin) or - FOLFOX (5-FU + oxaliplatin + leucovorin or levoleucovorin). ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04210115
Study type Interventional
Source Merck Sharp & Dohme LLC
Contact
Status Active, not recruiting
Phase Phase 3
Start date February 28, 2020
Completion date February 1, 2027

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