Regarding the high levels of expression and OS, a significant association was found; this is similar to that described by Boyer et al. 2019, where they showed that in a cohort of 161 patients with AML, a low level expression, 0.45 medians, range (0.23–0.6) of the ABCB1 gene a had higher OS [30]. This evidence concerns the gene ABCB1 and acute myeloid leukemia.