This clinical trial is focused on studying the treatment of metastatic non-small cell lung cancer, a type of lung cancer that has spread to other parts of the body. The study is comparing two forms of the medication pembrolizumab, which is used to help the immune system fight cancer. One form is given as a subcutaneous injection, which means it is injected under the skin, and is known as MK-3475A. The other form is given as an intravenous infusion, meaning it is delivered directly into a vein. Both forms of pembrolizumab are administered alongside chemotherapy, which is a type of cancer treatment that uses drugs to destroy cancer cells.
The purpose of the study is to evaluate the safety and how the body processes these two forms of pembrolizumab when used as a first-line treatment, which means it is the first treatment given for this type of cancer. Participants in the study will receive either the subcutaneous or intravenous form of pembrolizumab, along with chemotherapy, and their health will be monitored over a period of time. The study will look at various factors, such as how much of the drug is present in the body at different times and any side effects that may occur.
Throughout the study, participants will receive regular medical check-ups and tests to monitor their response to the treatment. The study aims to provide valuable information on the effectiveness and safety of these treatment options for people with metastatic non-small cell lung cancer. This research could help improve treatment strategies and outcomes for patients with this condition in the future.



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