CD274 and diffuse large B-cell lymphoma: In DLBCL, PD-L1 expression has been reported in around 20-30% of DLBCL cases but this figure varies greatly depending on the cut-off applied (which ranges from 5 to 30%) and the cell compartment analyzed (tumor/non-tumor cells) [10, 12, 13, 54] (Figures 2A and 2B) (Table 1).