PLK1 and acute lymphoblastic leukemia: Using molecules reported to inhibit PKCζ (Gö6976) [31] and PLK1 (GW842682X) [32] kinase activities, we did not observe any effect on FADD phosphorylation either in human (JURKAT) or murine (BW5147.3) T-LBL/ALL cell lines (Supplementary Figure S1).