Chronic Myeloid Leukemia and Second-Generation Tyrosine Kinase Inhibitors: When, How, and Which One?

Elias Jabbour, Hagop Kantarjian, Jorge Cortes

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Chronic myeloid leukemia (CML) is a progressive and often fatal myeloproliferative disorder. The introduction of imatinib, a tyrosine kinase inhibitor (TKI) specific for BCR-ABL, was a major breakthrough in CML therapy. Although most patients respond to first-line imatinib therapy, some experience a loss of response (resistance) or require treatment discontinuation due to toxicity (intolerance). For patients who fail with standard-dose imatinib therapy, imatinib dose escalation is a second-line option. However, high-dose imatinib is not an appropriate approach for patients experiencing drug toxicity, and there remain questions over the durability of responses achieved with this strategy. Alternative second-line options include the newer TKIs dasatinib and nilotinib. A substantial amount of long-term data for these agents is available. Although both are potent and specific BCR-ABL TKIs, dasatinib and nilotinib exhibit unique pharmacological profiles and response patterns relative to different patient characteristics, such as disease stage and BCR-ABL mutational status. To optimize therapeutic benefit, clinicians should select treatment based on each patient's historical response, adverse-event tolerance level, and risk factors.

Original languageEnglish (US)
Pages (from-to)344-353
Number of pages10
JournalSeminars in Hematology
Volume47
Issue number4
DOIs
StatePublished - Oct 1 2010
Externally publishedYes

ASJC Scopus subject areas

  • Hematology

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