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.