This clinical trial is focused on studying stage II high-risk melanoma, a type of skin cancer that has been surgically removed but still poses a risk of returning. The treatment being tested is called nivolumab, also known by its code names BMS936558 and ABP 206. Nivolumab is given as a solution through an infusion into the vein. The purpose of the study is to see how effective nivolumab is in preventing the return of melanoma in patients who are at high risk, as determined by a special test called the MelaGenix assay.
Participants in the study will be randomly assigned to one of two groups. One group will receive nivolumab, while the other group will be observed without receiving the medication. The study will follow participants over time to see if the melanoma returns or if there are any other health changes. The main focus is on how long participants remain free from melanoma returning, which is referred to as Relapse-Free Survival (RFS). The study will also look at other outcomes, such as how long participants live without the cancer spreading to other parts of the body, known as distant metastasis-free survival, and overall survival rates.
Throughout the study, participants will have regular check-ups and tests to monitor their health and the status of their melanoma. The study aims to provide valuable information on whether nivolumab can help prevent the return of melanoma in patients who are at high risk, potentially offering a new treatment option for this group. The study is expected to continue until 2027.



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