FIG 1.

Characteristics of the BL-IPI in the derivation (US) cohort: (A) proportion of patients according to the number of risk factors; (B) PFS according to the number of risk factors; PFS of patients with two versus three, and three versus four risk factors was not statistically significantly different, and hence, these groups were combined in the high-risk category; (C) PFS according to BL-IPI risk group; (D) 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; LDH, lactate dehydrogenase; OS, overall survival; PFS, progression-free survival; ULN, upper limit of normal.