Kaplan-Meier curves showing overall survival in the intent-to-treat population and adjusting for crossover. OS (ITT population; A) and OS sensitivity analysis adjusted for crossover∗ (B). ∗Two-stage Weibull model without recensoring (prespecified analysis). †Based on KM approach. ‡Stratified HR is based on the univariate Cox proportional hazards model. CI is 2-sided and calculated by bootstrap method.