*Carcinoma Transitional Cell/drug therapy Female Humans Immune Checkpoint Inhibitors/therapeutic use Immunotherapy *Lung Neoplasms/pathology Male Platinum/therapeutic use Programmed Cell Death 1 Receptor *Urinary Bladder Neoplasms/drug therapy

Apoptosis B7-H1 Antigen/genetics/metabolism *Carcinoma Transitional Cell/pathology Cystectomy Humans Immune Checkpoint Inhibitors Ligands Lymph Node Excision Neoplasm Recurrence Local/pathology Prognosis Programmed Cell Death 1 Receptor Urinary Bladder *Urinary Bladder Neoplasms/pathology bladder urothelial carcinoma meta-analysis prognostic value programmed cell death ligand-1 radical cystectomy commercial or financial relationships that could be construed as a potential conflict of interest.

Adult Aged Aged 80 and over B7-H1 Antigen/genetics/*immunology Female Humans Immune Checkpoint Inhibitors/*administration & dosage *Immunotherapy Male Middle Aged Programmed Cell Death 1 Receptor/genetics/*immunology Progression-Free Survival Randomized Controlled Trials as Topic Treatment Outcome Urinary Bladder Neoplasms/genetics/immunology/mortality/*therapy efficacy immunotherapy meta-analysis safety urothelial cancer this study.

Antibodies Monoclonal/adverse effects/therapeutic use Antibodies Monoclonal Humanized/adverse effects/therapeutic use Antineoplastic Agents Immunological/*therapeutic use B7-H1 Antigen/*antagonists & inhibitors Clinical Trials Phase III as Topic Humans Network Meta-Analysis Programmed Cell Death 1 Receptor/*antagonists & inhibitors Salvage Therapy/*methods Survival Analysis Treatment Outcome Urinary Bladder Neoplasms/*drug therapy/*secondary PD-1 inhibitor PDL-1 inhibitor atezolizumab pembrolizumab urothelial bladder cancer