CML is a clonal myeloproliferative pluripotent haematopoietic stem cell malignancy disorder characterized by the expression of B‐cell receptor/v‐abl Abelson murine leukaemia viral oncogene (BCR/ABL1) fusion gene,9, 10 which is generated from the Philadelphia chromosome translocation of chromosome 9–22.11, 12. This evidence concerns the gene ABL1 and chronic myelogenous leukemia, BCR-ABL1 positive.