This study investigates the effectiveness of an investigational medication compared to standard observation in patients with stages I-III Merkel cell cancer. Merkel cell cancer is a rare type of skin cancer that can grow quickly and spread to other parts of the body. The study focuses on patients whose cancer has been completely removed by surgery.
Participants in this study will receive either the investigational medication, which is a type of immunotherapy using monoclonal antibodies, or they will continue with standard observation. Immunotherapy may help the immune system attack cancer cells and prevent them from growing and spreading.
- Who can participate: Adults with stage I-III Merkel cell cancer that has been completely removed by surgery may participate. Participants must not have distant metastatic disease or have received previous systemic or radiation therapy for Merkel cell carcinoma. Women must not be pregnant or breastfeeding, and effective contraception is required for those of childbearing potential.
- Study details: Participants will be assigned to receive either the investigational medication or continue with standard observation. The investigational medication is a type of immunotherapy that uses monoclonal antibodies to help the immune system fight cancer.

