The previous study in AML pediatric patients also obtained a higher OS and event-free survival (EFS) in carriers of the variant allele of the SLCO1B1 polymorphism (rs2291075), as well as those of the SLCO1B1 haplotype *1A/*1A,*1B/*1B (rs2291075, rs4149056 and rs2306283) [13]. This evidence concerns the gene SLCO1B1 and acute myeloid leukemia.