MPL and acute myeloid leukemia: In the present study, we demonstrated that all the cytokine receptors evaluated (IL-2Rα, IL-2Rβ, IL-3Rα, IL-4Rα, IL-5Rα, IL-6R, IL-7Rα, βc, γc, GM-CSFRα, G-CSFR, c-fms, c-mpl, c-kit, FLT3, and GP130) were expressed in AML cells with a variable range of expression levels (Table 1).