BENITIONSClinical Trial Intelligence

Study of Pembrolizumab (MK-3475) Plus Enzalutamide Versus Placebo Plus Enzalutamide in Participants With Metastatic Castration-resistant Prostate Cancer (mCRPC) (MK-3475-641/KEYNOTE-641)

3상 완료 NCT03834493

대상 질환Prostatic Neoplasms
임상 단계3상
스폰서Merck Sharp & Dohme LLC
상태완료
참여자 수1,244 명
중재(약물)Pembrolizumab, Enzalutamide
시작일2019년 7월 28일
완료일2022년 12월 12일
결과 공개일2023년 12월 20일

요약

The purpose of this study is to assess the efficacy and safety of the combination of pembrolizumab (MK-3475) and enzalutamide in the treatment of men with metastatic castration-resistant prostate cancer (mCRPC) who have not received chemotherapy for mCRPC, are abiraterone-naïve, or are intolerant to or progressed on abiraterone acetate. There are two primary study hypotheses. Hypothesis 1: The combination of pembrolizumab plus enzalutamide is superior to placebo plus enzalutamide with respect to Overall Survival (OS). Hypothesis 2: The combination of pembrolizumab plus enzalutamide is superior to placebo plus enzalutamide with respect to Radiographic Progression-free Survival (rPFS) per Prostate Cancer Working Group (PCWG)-modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as assessed by blinded independent central review.

Overall Survival (OS)

Up to 40 months (through database cut-off date of 12-Dec-2022) · Months

Pembrolizumab + Enzalutamide24.7 Months
Placebo + Enzalutamide27.3 Months
p-value0.6621
Hazard Ratio (HR)1.04 (95% CI 0.88–1.22)

Radiographic Progression-free Survival (rPFS) Per Prostate Cancer Working Group (PCWG)-Modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Blinded Independent Central Review

Up to 40 months (through database cut-off date of 12-Dec-2022) · Months

Pembrolizumab + Enzalutamide10.4 Months
Placebo + Enzalutamide9.0 Months
p-value0.4073
Hazard Ratio (HR)0.98 (95% CI 0.84–1.14)

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