Study of PF-08634404 Alone or with Enfortumab Vedotin for Adults with Advanced or Metastatic Urothelial Cancer Evaluating Safety, Effectiveness, and Drug Behavior

What this Trial Is About

Researchers are evaluating a new medicine called PF-08634404 for adults with locally advanced or metastatic urothelial cancer, a type of bladder cancer that has spread to nearby tissues or other parts of the body. The study aims to assess the safety, effectiveness, how the medicine moves through the body, and its impact on cancer-related markers. This is a Phase 1B2 treatment study sponsored by Pfizer. Participants are divided into two groups Cohort A includes those who have already received treatment and will receive PF-08634404 alone, while Cohort B includes untreated participants who will receive PF-08634404 combined with another cancer medicine called enfortumab vedotin. Both study medicines are given through an intravenous infusion. Treatment continues as long as it is beneficial and side effects are manageable. Before starting treatment, participants undergo a screening period to confirm eligibility. During the study, they have regular visits for treatment, health assessments, and tests to monitor cancer response, including scans. If the cancer worsens but treatment still helps and side effects are manageable, participants may continue treatment with approval. The study tracks outcomes such as tumor response, adverse events, survival, and drug levels over up to three years.

Symbiotic-GU-06: A Study to Learn About PF-08634404 Alone or In Combination With Enfortumab Vedotin in Urothelial Cancer