NFKB1 and acute lymphoblastic leukemia: The negative impact of GSK3β inhibition, by either pharmacologic inhibitors or siRNA-mediated GSK3β-suppression, on NF-κB DNA-binding activity in P/I-stimulated Jurkat T-ALL cell further underscores the importance of GSK3β for this canonical NF-κB signalling pathway (Fig. 3G, Suppl.