Inclusion Criteria:  Histologically or cytologically documented muscle-invasive TCC of the bladder with clinical stage T2-T4aN0/1M0 with transitional and mixed transitional cell histology; Medically fit for cystectomy and able to receive neoadjuvant therapy; Patients who have not received prior systemic chemotherapy or immunotherapy for treatment of MIBC; ECOG performance status of 0,1,2 at enrollment. Availability of tumor sample prior to study entry; Must have a life expectancy of at least 12 weeks at randomization.  Exclusion criteria:  Evidence of lymph node (N2+) or metastatic TCC/UC disease at the time of screening. Active infection Uncontrolled intercurrent illness Prior exposure to immune-mediated therapy (with exclusion of Bacillus-Calmette Guerin [BCG]), including but not limited to other anti-CTLA-4, anti--PD-1, anti PD-L1, or anti-PD-L2 antibodies. Current or prior use of immunosuppressive medication within 14 days before the first dose of IPs.