Levels of XIAP expression correlate with sensitivity to the XIAP antagonist.XIAP expression was detected in 20 DLBCL samples using RT-MLPA analysis. Patient DLBCL samples were divided into 2 groups based on their LD50 value for 1396-12 (LD50 < 39 μM or LD50 ≥ 39 μM). Horizontal lines represent the mean XIAP expression level for each group.