Relapse-free survival of patients according to treatment with RTX. (A) Unadjusted Kaplan-Meier analysis for relapse-free survival at 1 year, stratified by administration of RTX. Patients begin contributing time to the RTX group starting on the day of RTX administration. The curves were compared using the log-rank test. (B) Unadjusted Kaplan-Meier analysis for relapse-free survival at 5 years, stratified by administration of RTX. Patients begin contributing time to the RTX group starting on the day of RTX administration. The curves were compared using the log-rank test. (C) Graphical representation of increasing hazard ratio of relapse rate over time for patients receiving RTX, derived from the Cox proportional hazards model.