Study of MK-4830 as Monotherapy and in Combination With Pembrolizumab in Participants With Advanced Solid Tumours

This study consists of several parts: dose escalation, dose expansion, dose expansion in Chinese participants residing in China, and coformulation. Dose escalation is to evaluate the safety, tolerability, and preliminary efficacy of MK-4830 monotherapy administration (Arms A and B) and in combination with pembrolizumab (Arm C). Dose expansion is to evaluate the objective response rate … Continued

Long-term Safety and Efficacy Extension Study for Participants With Advanced Tumours Who Are Currently on Treatment or in Follow-up in a Pembrolizumab Study

The purpose of this study is to evaluate the long-term safety and efficacy of pembrolizumab (MK-3475) in participants from previous Merck pembrolizumab-based parent studies who roll-over into this extension study. This study will consist of three phases: 1) First Course Phase, 2) Survival Follow-up Phase or 3) Second Course Phase. Each participant will roll-over to … Continued

Study of Pembrolizumab and Pembrolizumab With Other Investigational Agents in Participants With High-Risk Non-muscle Invasive Bladder Cancer

In this study, participants with high-risk non-muscle-invasive bladder cancer (NMIBC) unresponsive to Bacillus Calmette Guerin (BCG) therapy and who are considered ineligible for or have refused to undergo radical cystectomy, will receive pembrolizumab therapy or pembrolizumab in combination with other investigational agents. The primary study hypothesis is that treatment with pembrolizumab will result in a … Continued