This clinical trial is focused on studying a type of cancer called squamous cell carcinoma of the anal canal. This cancer is a condition where abnormal cells grow in the anal canal, which is the end part of the digestive tract. The study is testing a new treatment that combines two chemotherapy drugs, carboplatin and paclitaxel, with a new medication called Retifanlimab (INCMGA00012). Some participants will receive a placebo instead of Retifanlimab. A placebo looks like the real medication but does not contain any active ingredients.
The purpose of the study is to compare the effectiveness of the treatment with Retifanlimab to the treatment with a placebo in people who have this type of cancer that cannot be removed by surgery and has not been treated with chemotherapy before. Participants in the study will receive the treatment through an intravenous infusion, which means the medication is given directly into a vein. The study will take place over several months, and participants will be monitored regularly to see how their cancer responds to the treatment.
Throughout the study, participants will have regular check-ups and tests to monitor their health and the progress of their cancer. The study aims to find out if adding Retifanlimab to the standard chemotherapy treatment can help improve outcomes for people with this type of cancer. This research is important because it may lead to better treatment options for patients in the future.



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