A Study of TAR-200 in Combination With Cetrelimab or TAR-200 Alone Versus Intravesical Bacillus Calmette-Guérin (BCG) in Participants With BCG-naïve High-risk Non-muscle Invasive Bladder Cancer (HR-NMIBC)

Bladder cancer is the tenth most common malignancy worldwide. About 75 percent (%) of bladder cancers are non-muscle invasive at diagnosis with approximately 25% of NMIBC patients have HR, NMIBC. The TAR-200/gemcitabine (JNJ-17000139) product is an intravesical drug delivery system regulated as an investigational drug. The drug constituent consists of gemcitabine and osmotic minitablets. Cetrelimab (JNJ-63723283) is a fully human immunoglobulin G4 (IgG4) kappa monoclonal antibody (mAb) that binds programmed-cell death protein (PD)-1. The mainstay of treatment for HR-NMIBC is transurethral resection of bladder tumor, followed by intravesical treatment with BCG. In this study metronomic dosing of intravesical gemcitabine, delivered via TAR-200, alone or in combination with cetrelimab will be evaluated and compared against intravesical BCG. The study consists of a Screening phase, Treatment phase, and Follow-up phase. The total duration of the study will be up to 5 years and 2 months. Efficacy, Safety, pharmacokinetics (PK), and biomarkers will be assessed at specific time points during the study.