Display of mean IC50 values for MDM2-inhibitor-induced CLL apoptosis/necrosis. IC50 values for the MDM2 inhibitors MI-63 (A) and nutlin3 (B): MDM2 inhibitor-mediated CLL cell apoptosis was measured in purified CD19+ cells as described.2 SNP309 genotyping was done using genomic polymerase chain reaction across MDM2 SNP309. Displayed are mean IC50 values grouped by MDM2 SNP309 genotype (TT, TG, GG) and 95% confidence bars.