Harbin

Researchers are evaluating the effectiveness of TAR-210 compared to a single-agent intravesical chemotherapy in adults with intermediate-risk non-muscle invasive bladder cancer (NMIBC) who have specific fibroblast growth factor receptor (FGFR) mutations or fusions. This phase 3 randomized study aims to compare disease-free survival between these treatments. Eligible participants must have a confirmed diagnosis of intermediate-risk NMIBC with certain risk factors and be willing to undergo multiple cystoscopies and assessments throughout the study. Participants will receive either TAR-210, which is delivered directly into the bladder, or one of the investigator-chosen intravesical chemotherapy drugs, including Gemcitabine or MMC, also administered into the bladder. Prior to randomization, visible tumors must be fully removed, and the absence of disease confirmed. The study includes a main study group and a substudy group with slightly different eligibility criteria based on tumor grade and risk factors. During the study, participants will be closely monitored through cystoscopies and surgical assessments (TURBT) to evaluate cancer recurrence or progression. The primary outcome measure is disease-free survival, tracked from randomization until the first documented cancer recurrence, progression, or death, over approximately four years and two months. Safety and treatment adherence will also be assessed throughout the study period.