First Published Online February 2, 2010 The Oncologist, Vol. 15, No. 2, 182-186, February 2010; doi:10.1634/theoncologist.2009-0297 © 2010 AlphaMed Press
Why Doesn't Imatinib Cure Chronic Myeloid Leukemia?University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania, USA Key Words. Chronic myeloid leukemia • CML • Imatinib • Leukemic stem cell Correspondence: Robert L. Redner, M.D., 2.18A Hillman Research Pavilion, 5117 Centre Avenue, Pittsburgh Pennsylvania 15213, USA. Telephone:412-623-3257; Fax:412-623-7768; e-mail: redner{at}pitt.edu Received November 24, 2009; accepted for publication January 11, 2010; first published online in THE ONCOLOGIST Express on February 2, 2010.
Disclosures: Robert L. Redner: None.
Imatinib mesylate has transformed the treatment for chronic myeloid leukemia (CML). The vast majority of patients obtain hematologic remission, with a low probability of progression of disease. Yet imatinib rarely cures CML, and current recommendations dictate lifelong treatment with imatinib. In this review we analyze the biology behind the failure of imatinib to fully eradicate CML. We review evidence that indicates that the leukemic stem cell for CML is inherently resistant to imatinib, and that imatinib treatment itself may enhance this resistance.
Copyright © 2010 by AlphaMed Press. |
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