Study of Pembrolizumab (MK-3475) Plus Olaparib Versus Abiraterone Acetate or Enzalutamide in Metastatic Castration-resistant Prostate Cancer (mCRPC) (MK-7339-010/KEYLYNK-010)

Summary

The purpose of this study is to assess the efficacy and safety of the combination of the polyadenosine 5'-diphosphoribose poly (ADP-ribose) polymerase (PARP) inhibitor olaparib and pembrolizumab in the treatment of participants with mCRPC who have failed to respond to either abiraterone acetate or enzalutamide (but not both) and to chemotherapy. The primary study hypotheses are that the combination of pembrolizumab plus olaparib is superior to abiraterone acetate or enzalutamide with respect to: 1. Overall Survival (OS) and 2. Radiographic progression-free survival (rPFS) per Prostate Cancer Working Group (PCWG)-modified Response Evaluation Criteria in Solid Tumors Version 1.1 as assessed by blinded independent central review (BICR) As of Amendment 06, the Data Monitoring Committee (DMC) is no longer applicable. Participants still on treatment may have the option to continue receiving study intervention or SOC if they are deriving clinical benefit, until criteria for discontinuation are met. Participants who are still on study treatment and deriving clinical benefit will no longer have tumor response assessments by BICR. However, local tumor imaging assessments should continue per standard of care (SOC) schedule. In addition, electronic patient-reported outcome (ePRO) assessments will no longer be performed and biomarker samples will no longer be collected.

Timeline

Start

2019-05-02

Primary completion

2022-03-14

Completion

2024-01-27

Publications

• Results Antonarakis ES, Park SH, Goh JC, Shin SJ, Lee JL, Mehra N, McDermott R, Sala-Gonzalez N, Fong PC, Greil R, Retz M, Sade JP, Yanez P, Huang YH, Begbie SD, Gafanov RA, De Santis M, Rosenbaum E, Kolinsky MP, Rey F, Chiu KY, Roubaud G, Kramer G, Sumitomo M, Massari F, Suzuki H, Qiu P, Zhang J, Kim J, Poehlein CH, Yu EY. Pembrolizumab Plus Olaparib for Patients With Previously Treated and Biomarker-Unselected Metastatic Castration-Resistant Prostate Cancer: The Randomized, Open-Label, Phase III KEYLYNK-010 Trial. J Clin Oncol. 2023 Aug 1;41(22):3839-3850. doi: 10.1200/JCO.23.00233. Epub 2023 Jun 8.
• Mehra N, Antonarakis ES, Park SH, Goh JC, McDermott R, Sala Gonzalez N, Fong PC, Greil R, De Santis M, Yanez PE, Huang YH, Begbie SD, Rey F, Kramer G, Suzuki H, Saretsky TL, Ghate SR, Cui Y, Hosius C, Yu EY. Patient-reported Outcomes in KEYLYNK-010: Pembrolizumab Plus Olaparib Versus Abiraterone or Enzalutamide for Participants with Biomarker-unselected, Previously Treated Metastatic Castration-resistant Prostate Cancer. Eur Urol Oncol. 2025 Aug;8(4):1030-1040. doi: 10.1016/j.euo.2025.04.018. Epub 2025 Jul 19.

Drugs

Indications