In the tested samples, ID4 transcript level was negatively correlated with ID4 methylation level in patients with AML (R = −0.275, P = 0.001, Fig. 7A) and patients with CML (R = −0.424, P = 0.002, Fig. 7B). The gene discussed is ID4; the disease is chronic myelogenous leukemia, BCR-ABL1 positive.