This clinical trial is focused on studying a type of cancer known as colorectal metastatic cancer with microsatellite instability (MSI). This is a form of cancer that starts in the colon or rectum and has spread to other parts of the body. The study is comparing the effectiveness and tolerance of a medication called avelumab against standard chemotherapy treatments. Chemotherapy is a type of cancer treatment that uses drugs to destroy cancer cells. The standard chemotherapy treatments in this study may include drugs such as bevacizumab, folinic acid, fluorouracil, aflibercept, irinotecan, panitumumab, oxaliplatin, and cetuximab.
The purpose of this study is to compare how well patients respond to avelumab versus the standard chemotherapy treatments. Participants in the study will receive either avelumab or one of the standard chemotherapy treatments. The study will last for a period of up to 60 weeks, during which time the participants will receive their assigned treatment. The treatments are given through an intravenous infusion, which means the medication is delivered directly into the bloodstream through a vein.
Throughout the study, doctors will monitor the participants’ health and the progression of their cancer. They will use imaging tests to check for changes in the size of the cancer and assess how well the treatment is working. The study will also look at the side effects of the treatments to understand how well patients tolerate them. The goal is to find out which treatment is more effective and better tolerated by patients with this specific type of colorectal cancer.



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