NFKB1 and acute lymphoblastic leukemia: All T-ALL cell lines showed basal phosphorylation (RMFI > 1.5) of Erk1/2, Lck, NF-κB p65, STAT3, and ZAP70Y319, with higher levels of Erk1/2, Lck, and ZAP70Y319 in Jurkat cells.