Chronic Myelogenous Leukemia Treatment (PDQ®): Treatment - Health Professional Information [NCI] - Treatment Option Overview
The only consistently successful curative treatment of CML beyond 10 years' follow-up has been allogeneic bone marrow transplantation (BMT) or stem cell transplantation (SCT). Long-term data beyond 10 years of therapy are available, and most long-term survivors show no evidence of the BCR/ABL translocation by any available test (e.g., cytogenetics, RT–PCR, or fluorescent in situ hybridization [FISH]). Many patients, however, are not eligible for this approach because of age, comorbid conditions, or lack of a suitable donor. In addition, substantial morbidity and mortality result from allogeneic BMT or SCT; a 15% to 30% treatment-related mortality can be expected, depending on whether a donor is related and on the presence of mismatched antigens.
Long-term data are also available for patients treated with interferon alpha.[11,12,13] Approximately 10% to 20% of these patients have a complete cytogenetic response with no evidence of BCR/ABL translocation by any available test, and the majority of these patients are disease free beyond 10 years. Maintenance of therapy with interferon is required, however, and some patients experience side effects that preclude continued treatment.
Newly diagnosed patients with very high levels of circulating leukocytes (WBC >100,000/mm3) require immediate therapy with imatinib mesylate to avoid cerebrovascular events or death from leukostasis. Leukophoresis and plateletpheresis are sometimes required for an even more emergent reduction of counts.
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