WEE1 and acute lymphoblastic leukemia: Although acute response to AZD1775 (GI50) did not associate with any specific ALL subtype (Additional file 1: Fig. S1b), WEE1 inhibition markedly attenuated re-proliferation following drug washout in KMT2A-r cells as opposed to non-KMT2A-r cells (p = 0.0094) (Fig. 1c, Additional file 1: Fig. S1d).