Chronic myelogenous leukemia is a clonal myeloproliferative neoplasm caused by reciprocal translocation involving chromosomes 9 and 22 resulting in the expression of a constitutively activated BCR-ABL1 tyrosine kinase that leads to the malignant transformation of the hematopoietic stem cells. The condition was previously known as a relentlessly progressive disease, but the treatment was revolutionalized by the efficacy of tyrosine kinase inhibitors. Therapeutic success is thus currently determined by the depth of molecular response achieved on therapy. Multiple tyrosine kinase agents are available even for the first line treatment. This guideline summarizes current focal points of the treatment of chronic myelogenous leukemia specific to Hungary and provides definitions for optimal molecular responses in this condition.
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