title: Bosutinib in the management of chronic myelogenous leukemia.
abstract: Bosutinib (SKI-606) is an orally available, once-daily dual Src and Abl kinase inhibitor, approved by the US Food and Drug Administration for the treatment of adults with chronic, accelerated, or blast-phase Philadelphia chromosome-positive chronic myelogenous leukemia who are intolerant of or resistant to first- or second-generation tyrosine kinase inhibitors. Bosutinib effectively overcomes the majority of imatinib-resistance-conferring BCR-ABL mutations except V299L and T315I. In the Bosutinib Efficacy and Safety in chronic myeloid LeukemiA (BELA) trial, bosutinib attained a faster and deeper molecular response than imatinib in newly diagnosed chronic-phase chronic myelogenous leukemia patients. Treatment-emergent adverse events are usually very manageable. Low grade, mostly self-limiting diarrhea represents the most frequently observed toxicity of bosutinib. Anti-diarrheal drugs, antiemetic agents, and/or fluid replacement should be used to treat these patients. The improved hematological toxicity of bosutinib compared with other tyrosine kinase inhibitors has been ascribed to its minimal activity against platelet-derived growth factor receptor and KIT. In this review, we give an overview on the profile of bosutinib, the clinical potential and treatment-emergent adverse events.
authors.affiliation: Department of Hematology and Oncology and, Stem Cell Transplantation and Pulmonology Division, Oncological Center, University Hospital Hamburg- Eppendorf, Hamburg, Germany.
authors.forename: Gunhild Keller-von
authors.initials: GK
authors.lastname: Amsberg
authors.forename: Philippe
authors.initials: P
authors.lastname: Schafhausen
keywords: BCR-ABL; CML; SRC/ABL kinase inhibitor; resistance-conferring mutation