This clinical trial is focused on studying a type of cancer called locally advanced sinonasal carcinoma, which affects the nasal cavity and sinuses. The study will explore the use of a medication called pembrolizumab, also known by its code name MK-3475, in combination with chemotherapy. Pembrolizumab is a type of treatment that helps the immune system fight cancer cells. The purpose of the study is to evaluate the safety and effectiveness of this combination as a treatment before surgery, known as neoadjuvant therapy, for patients with this type of cancer.
Participants in the study will receive pembrolizumab along with chemotherapy. The treatment is given as a solution for infusion, which means it is administered directly into the bloodstream through a vein. The study will last for a period of up to 48 weeks, during which the effects of the treatment will be closely monitored. Some participants may receive a placebo, which is a substance with no active medication, to compare the results with those receiving the actual treatment.
The main goal is to observe how well the cancer responds to the treatment, looking for signs of complete or partial remission, which means the cancer shrinks or disappears. This study aims to provide valuable information on whether pembrolizumab combined with chemotherapy can be a safe and effective option for treating locally advanced sinonasal carcinoma before surgery.



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