Trial of Anti-PD-1 (Nivolumab) in Bladder Cancer Patients Recently Treated With Intravesical BCG Immunotherapy

The goal of this clinical research study is to learn about the tolerability of nivolumab in patients who have bladder cancer, were previously treated with BCG immunotherapy, and who have a cystectomy (removal of all or part of the bladder) scheduled as part of their standard care. This is an investigational study. Nivolumab is FDA approved and commercially available to treat metastatic (has spread) melanoma or non-small cell lung cancer (NSCLC) after the disease has gotten worse while receiving platinum-based chemotherapy. The use of nivolumab in this study is considered investigational. Up to 10 participants will take part in this study. All will be enrolled at MD Anderson.