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Performance of the BL-IPI in the validation (international) cohort: (A) PFS according to BL-IPI risk group, (B) OS according to BL-IPI risk group; 3-year PFS and OS estimates are listed with 95% CIs (in parentheses); P values are from log-rank tests comparing groups sequentially and from an overall log-rank test. BL-IPI, Burkitt lymphoma International Prognostic Index; OS, overall survival; PFS, progression-free survival.
