Phase 3 Study Comparing TAR-210 Bladder Treatment to Chemotherapy in High-Risk Non-Muscle-Invasive Bladder Cancer Patients with FGFR Changes After BCG Therapy

What this Trial Is About

Researchers are evaluating the disease-free survival in participants with high-risk non-muscle-invasive bladder cancer HR-NMIBC who have previously received Bacillus Calmette-Gurin BCG treatment. This Phase 3 trial compares a new treatment called TAR-210 with the investigators choice of intravesical chemotherapy. The study focuses on participants with specific fibroblast growth factor receptor FGFR alterations and aims to find out which treatment better prevents cancer recurrence or progression after BCG therapy. Participants are randomly assigned to one of two groups. Group A will have TAR-210 inserted into the bladder starting on Day 1 and continuing for about 2 years. Group B will receive either mitomycin C or gemcitabine chemotherapy, chosen by the investigator, given once weekly for 4 to 6 weeks induction, followed by monthly maintenance doses for up to 1 year, with a possible second year of maintenance at the investigators discretion. All treatments are delivered directly into the bladder intravesically. During the study, participants will be monitored for up to 5 years to track disease-free survival and other outcomes such as recurrence-free survival, time to next intervention, disease worsening, progression, and overall survival. Researchers will also assess side effects, laboratory and vital sign changes, and quality of life using specific questionnaires. The study includes regular evaluations and safety monitoring throughout the participation period, which may last several years.

A Study to Evaluate TAR-210 Versus Intravesical Chemotherapy Treatment in Participants With High Risk Non-Muscle-Invasive Bladder Cancer