Expression of cyclins A, B, D, and E, and CDKIs p21and p16 during the G0/G1 and S phases were similar inthe CML patients and controls (P > 0.05); however, thiswas due to the similarity in the change observed from theG0/G1 to S phase in the controls. This evidence concerns the gene CCNA2 and chronic myelogenous leukemia, BCR-ABL1 positive.