For characterization of BCL6 and BACH2 involvement in anti-proliferative effects after CK2 inhibition, MLL-rearranged pro-B-ALL cell lines SEM and RS4;11 as well as BCR+ pre-B-ALL cell line NALM-6 were incubated with CX-4945 for up to 96 h. This evidence concerns the gene BCR and acute lymphoblastic leukemia.