Chronic myeloid leukemia (CML) is a bone marrow proliferative hematopoietic cell malignancy (Eden and Coviello 2021) characterized by the BCR::ABL1 fusion gene that is formed by genetic translocation between chromosome 9 and chromosome 22 (Haider and Anwer 2021). The gene discussed is ABL1; the disease is chronic myelogenous leukemia, BCR-ABL1 positive.