SELE and acute myeloid leukemia: Overall, a 2.5-fold (p = 0.0030) increase in functional efflux potential was observed in AML blasts with high E-selectin-binding potential, compared to lower binding AML when corrected against same stain in presence of drug efflux blocker verapamil as “no efflux” control (Fig. 5e, Supplementary Fig. 5).