Bladder Cancer Clinical Trials

• Histologically confirmed diagnosis by local pathology of papillary-only HR-NMIBC (defined as high-grade Ta or any T1, no CIS). Mixed histology tumors are allowed if urothelial differentiation is predominant. However, neuroendocrine, and small cell variants will be excluded

• Have a susceptible fibroblast growth factor receptor (FGFR) mutation or fusion either by urine testing or tumor tissue testing (from TURBT tissue) as determined by central or local testing

• All visible tumor completely resected prior to randomization. Urine cytology must not be positive or suspicious for high grade UC before randomization. For participants with lamina propria invasion (T1) on the screening biopsy/TURBT, muscularis propria must be present to rule out MIBC

• Participants must have had either: a. Adequate Induction (5 of 6 doses) and either 2 of 3 doses of Maintenance or 2 of 6 doses of second Induction of BCG with high-grade T1 disease at first disease assessment after induction or high-grade Ta/any T1 disease within 6 months after last BCG (BCG-unresponsive population); b. had adequate induction (5 or 6 doses) with or without maintenance BCG with high-grade Ta/any T1 disease within 12 months after last BCG excluding BCG-unresponsive (BCG-experienced population); or c. been unable to complete an induction course of BCG with at least 5 doses due to grade \>= 2 toxicity requiring BCG discontinuation (BCG intolerant population)

• Have an Eastern Cooperative Oncology Group (ECOG) performance status Grade of 0, 1, or 2

• Must be ineligible for or refusing radical cystectomy (RC)