Drug transporterexpression is prevalently elevated in CML, acute myeloid leukemia(AML), and different solid cancers.9,10 Since frequentlyapplied anticancer agents are substrates of transporter proteins,such as ABCB1, their efflux may drastically decrease intracellulardrug concentrations and result in a poor response to therapy.11 Here, ABCB1 is linked to acute myeloid leukemia.