Note: Some citations in the text of this section are followed by a level of evidence. The PDQ editorial boards use a formal ranking system to help the reader judge the strength of evidence linked to the reported results of a therapeutic strategy. (Refer to the PDQ summary on Levels of Evidence for more information.)
Treatment Options for Chronic-Phase Chronic Myelogenous Leukemia
Family caregivers may be spouses, partners, children, relatives, or friends who help the patient with activities of daily living and health care needs at home.
Many cancer patients today receive part of their care at home. Hospital stays are shorter than they used to be, and there are now more treatments that don't need an overnight hospital stay or can be given outside of the hospital. People with cancer are living longer and many patients want to be cared for at home as much as possible. This...
High-dose therapy followed by allogeneic bone marrow transplant (BMT) or stem cell transplantation (SCT).
Biologic therapy with or without chemotherapy.
Splenectomy may be required and useful in patients having hematologic problems and physical discomfort from a massive spleen.
Targeted therapy with tyrosine kinase inhibitors
A trial randomizing 1,106 previously untreated patients to imatinib mesylate or to interferon plus cytarabine documented a 76% complete cytogenetic response rate with imatinib mesylate versus 14% for interferon plus cytarabine at a median follow-up of 19 months.[1,2][Level of evidence: 1iiDiii] At 18 months, 96.7% of the imatinib group had avoided progression to accelerated-phase or blast crisis compared with 91.5% of the interferon plus cytarabine group (P < .001). Because 90% of the combination group had switched to imatinib by 18 months (mostly because of intolerance of side effects), a survival difference may never be observed. By the 5-year median follow-up of this trial, imatinib mesylate induced complete cytogenetic response in more than 80% of the participants, with the annual rate of progression to accelerated phase or blast crisis dropping from 2% in the first year to less than 1% in the fourth year. In addition, the overall survival (OS) rate for all patients at 5 years is 89%, with fewer than 50% of all deaths (4.5%) caused by CML. More than 90% of completely responding patients still show detectable evidence of the BCR/ABL translocation, usually by RT-PCR or by fluorescence in situ hybridization of progenitor cell cultures.[3,4,5] The clinical implication of this finding after 10 years or more is unknown, but these results have changed clinical practice. Poor compliance is the predominant reason for inadequate molecular response to imatinib.
Tyrosine kinase inhibitors with greater potency and selectivity for BCR/ABL than imatinib have been evaluated in newly diagnosed patients with CML. In a randomized prospective study of 846 patients comparing nilotinib with imatinib, the rate of major molecular response at 12 months was 43% and 44% for 2-dose schedules of nilotinib and 22% for imatinib (P < .001 for both comparisons). The rate of complete cytogenetic response at 12 months was 80% and 78% for 2-dose schedules of nilotinib and 65% for imatinib (P < .001 for both comparisons).[Level of evidence: 1iiDiv] Progression to accelerated phase or blast crisis occurred in 11 patients on imatinib (4%) but only occurred in 2 patients (<1%, P = .01) and 1 patient (<1%, P = .004) for the patients on 2-dose schedules of nilotinib.