^{Glossary: 1L: First-line; AEs: Adverse events; aUC: Advanced urothelial carcinoma; BSC: Best support care; CI: Confidence interval; CR: Complete response; HR: Hazard ratio; mUC: Metastatics urothelial carcinoma; NE: Not estmable; OS: Overall survival; PD-L1: Programmed death-ligand 1; PFS: Progression-free survival; PR: Partial response; Q2W: Every 2 weeks; SD: Stable disease; TEAEs: Treatment-emergent adverse events}