Analysis of prognostic effect of miR-155 expression. Kaplan-Meier plots depicting OS of R-CHOP-treated patients with DLBCL in the in-house cohort. The analysis was conducted for all patients with DLBCL (A), ABC-classified patients (B), and GCB-classified patients (C). For each cohort, patients were dichotomized by median split of miR-155 expression.