We analyzed the relationship between the levels of cytokine receptors that showed the wide range (maximum level ≥ 10,000 sites/cell or mean levels ≥ 1,000 sites/cell) and clinical (age, gender and white blood cell [WBC] count at diagnosis) and cellular features (CD34 expression and cytogenetic risk groups) in patients with AML (Table 2). This evidence concerns the gene CD34 and acute myeloid leukemia.