Survival outcomes in patient cohort. Kaplan-Meier curves for (left) OS and (right) PFS according to (A) IPI. Groups are: low (IPI score 0 or 1), low/intermediate (IPI score 2), high/intermediate (IPI score 3), and high (IPI score 4 or 5). (B) MVS. Groups are: low risk (MVS < median) and high risk (MVS > median). The log-rank test P value for group association with survival outcome is reported. n, number of patients who underwent R-CHOP therapy in this cohort with follow-up data.