This clinical trial is focused on studying treatments for urothelial cancer, a type of cancer that affects the bladder and other parts of the urinary system. The study is comparing two different treatment approaches. One group of participants will receive a combination of two medications: enfortumab vedotin and pembrolizumab. Pembrolizumab is also known by its code name, MK-3475. The other group will receive standard chemotherapy, which may include medications like gemcitabine, cisplatin, or carboplatin. These treatments are given as solutions through an infusion, which means they are delivered directly into the bloodstream through a vein.
The purpose of the study is to compare the effectiveness of the combination treatment with the standard chemotherapy in people who have not received prior treatment for their advanced or metastatic urothelial cancer. Participants will be randomly assigned to one of the two treatment groups. The study will monitor the participants over a period of time to see how well the cancer responds to the treatments and to assess overall survival rates.
Throughout the study, participants will receive regular medical check-ups and monitoring to ensure their safety and to track the progress of their treatment. The study aims to provide valuable information on whether the combination of enfortumab vedotin and pembrolizumab offers better outcomes compared to the standard chemotherapy options for patients with this type of cancer.



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