The results indicated that, compared with donors of hematopoietic stem cell transplantation, CML and AL patients had increased CDA mRNA expression (all p < 0.001), which was about 2.70 and 2.69 times that in the donors of hematopoietic stem cell transplantation, respectively. This evidence concerns the gene CDA and chronic myelogenous leukemia, BCR-ABL1 positive.