The levels of expression of the IL-3 receptor α (IL-3Rα) subunit are elevated in the progenitor and stem cells of patients with several hematological malignancies, e.g., acute myeloid leukemia (AML), chronic myeloid leukemia (CML), and basic plasmacytoid dendritic cell neoplasm [8,9,10,11,12]. Here, IL3RA is linked to chronic myelogenous leukemia, BCR-ABL1 positive.