Olarte I. et al. (2021) reported that, in adult patients with acute myeloblastic leukemia (AML), the TT genotype rs1045642 in ABCB1 was associated with shorter survival than the CT and CC genotypes (OR: 2.7; 95% CI: 1.28–5.81, p = 0.001) [20], similar to what we observed in this study. Here, ABCB1 is linked to acute myeloid leukemia.