ABL1 and acute lymphoblastic leukemia: However, a similar effect of vitamin D deficiency on survival from BCR-ABL ALL was seen regardless of whether mice were exposed to a VDD diet during gestation (Fig. 1), or started the diet at weaning (Supplementary Fig. S7), demonstrating the effect vitamin D levels on BCR-ABL leukemogenesis in this mouse model does not require vitamin D deficiency during gestation.