Fig. 1

Kaplan-Meier overall survival (OS) and progression-free survival (PFS) curves of patients with diffuse large B-cell lymphoma (DLBCL) according to the expression of programmed cell death-ligand 1 (PD-L1) in tumor cells and microenvironment. a, b Patients with PD-L1 expression in tumor cells had significantly lower 5-year OS rate (P = 0.02) and 5-year PFS rate (P < 0.01) compared with patients without PD-L1 expression in tumor cells. c, d The 5-year OS rate (P = 0.21) and 5-year PFS rate (P = 0.26) were similar between patients with and without PD-L1 expression in tumor microenvironment