Chronic myeloid or myelogenous leukemia (CML) is a myeloproliferative neoplasm which is defined as uncontrolled and dysregulated production of mature myeloid cells, mainly granulocytes. It results from acquired abnormal chromosomal translocation, t(9; 22), known as the Philadelphia chromosome, which contains the BCR-ABL1 fused gene and produces BCR-ABL1 fusion protein with abnormal tyrosine kinase activity [6]. It has three phases: chronic, accelerated, and blast. Tyrosine kinase inhibitors (TKIs) such as dasatinib, nilotinib, and bosutinib are the first-line treatment [7].