A Study of Nivolumab in Participants With Metastatic or Unresectable Bladder Cancer

Inclusion Criteria:

* Evidence of metastatic or surgically unresectable transitional cell carcinoma of the urothelium involving the bladder,urethra,ureter or renal pelvis
* Measurable disease by CT or MRI
* Progression or recurrence after treatment
* i) With at least 1 platinum-containing chemotherapy regimen for metastatic or surgically unresectable locally advanced urothelial cancer, or
* ii) Within 12 months of peri-operative (neo-adjuvant or adjuvant) treatment with a platinum agent in the setting of cystectomy for localized muscle-invasive urothelial cancer
* Subject that have received more than 2 prior lines of chemotherapy must not have liver metastases
* Tumor tissues (archived or new biopsy) must be provided for biomarker analysis
* Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0 or 1

Exclusion Criteria:

* Subjects with active cancer that has spread to the central nervous system
* Prior malignancy active within the previous 3 years except for locally curable cancers that have been apparently cured
* Subject with active, known or suspected autoimmune disease
* Subjects with a condition requiring systemic treatment with either corticosteroids (\>10 mg daily prednisone equivalents) or other immunosuppressive medications within 14 day of study drug administration
* Prior treatment with an anti-PD-1,anti-PD-L1,anti-PD-L2,anti-cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) antibody, anti-CD137 or any other antibody or drug specifically targeting T-cell co-stimulation or immune checkpoint pathways

Exclusion laboratory criteria:

* Positive test for hepatitis B virus surface antigen (HBV s Ag) or hepatitis C virus ribonucleic acid (HCV antibody) indicating acute or chronic infection
* Known history of testing positive for human Immunodeficiency virus (HIV) or known acquired Immunodeficiency syndrome (AIDS)

Other protocol-defined inclusion/exclusion criteria apply