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  • Title: Bosutinib: a dual SRC/ABL kinase inhibitor for the treatment of chronic myeloid leukemia.
    Author: Keller G, Schafhausen P, Brummendorf TH.
    Journal: Expert Rev Hematol; 2009 Oct; 2(5):489-97. PubMed ID: 21083014.
    Abstract:
    The tyrosine kinase inhibitor imatinib mesylate (IM) set new standards in the treatment of chronic myeloid leukemia (CML). However, emergence of resistance to IM became a major therapeutic challenge. Bosutinib (SKI-606), a 7-alkoxy-3-quinolinecarbonitrile, functions as a dual inhibitor of SRC and ABL kinases, and preclinical studies demonstrated a high antiproliferative activity in human and murine CML cell lines. In ongoing Phase I/II clinical trials, bosutinib yielded promising results revealing high clinical efficacy, good tolerability and reduced toxicity in IM-resistant or -intolerant CML patients. In this article, we provide an overview on the mechanism of action, and the preclinical and currently available clinical data for bosutinib. Owing to its favorable toxicity profile and its high antileukemic activity, bosutinib is a promising novel treatment option for patients with CML. A recently initiated, randomized open-label Phase III clinical study will clarify its role in first-line therapy of Philadelphia chromosome-positive chronic-phase CML.
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