KMT2A and acute lymphoblastic leukemia: The heterozygous genotype in ARID5B rs10821936 increased the risk for MLL-r ALL in both white and non-white infants (OR 2.19, 95% CI: 1.07-4.49 and OR 3.82, 95% CI: 1.21-12.12, respectively), while for children aged between 13–24 months the mutant genotype significantly increased the risk for ALL in white children, regardless the MLL status (OR 7.11, 95% CI: 2.07-24.45 for MLL-germline; OR 7.91, 95% CI: 1.47-42.46 for MLL-r) (Additional file 3: Table S3).