This clinical trial is focused on studying a type of lung cancer known as metastatic non-small cell lung cancer (NSCLC). The study is investigating the effects of a new treatment called MK-7684A, which is a combination of two substances: pembrolizumab and vibostolimab. These substances are designed to help the immune system fight cancer. The trial will compare the effectiveness of MK-7684A when used alone and when combined with another medication called docetaxel, which is a standard treatment for NSCLC. Some participants will receive a placebo, which looks like the treatment but does not contain the active substances.
The purpose of the study is to see if MK-7684A, either alone or with docetaxel, can help stop or slow down the growth of NSCLC better than docetaxel alone. Participants in the study will be randomly assigned to one of the treatment groups. The study will monitor the participants over a period to observe how the cancer responds to the treatments. The trial will also look at the safety of the treatments and any side effects that may occur.
Throughout the study, participants will receive their treatments through an intravenous infusion, which means the medication is given directly into a vein. The study will continue for a set period, and participants will have regular check-ups to assess their health and the progress of their cancer. The results of this study will help determine the potential benefits of MK-7684A for people with metastatic NSCLC.



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