Pts (≥18 y) with unresectable advanced/mUC and select FGFR3/2alt (mutations/fusions)...Primary end point was met: mOS 12.1 vs 7.8 mo in erda vs chemo (HR=0.64; 95% CI, 0.47-0.88). OS benefit was seen across subgroups (Table). Erda improved mPFS (6 vs 3 mo) and ORR (46% vs 12%) vs chemo...In pts with FGFRalt advanced/mUC after prior anti-PD-(L)1 tx, erda significantly improved OS vs chemo. Clinically relevant subgroups showed a consistent OS benefit for erda. No new safety signals were observed.