Bosutinib

Bosutinib is a Bcr-Abl kinase inhibitor for the treatment of Philadelphia chromosome-positive (Ph+) chronic myelogenous leukemia (CML). Compared to other tyrosine kinase inhibitors, it has a more favourable hematologic toxicity profile. FDA approved on September 4, 2012. (In Vitro):Bosutinib (SKI-606) is an active inhibitor of Bcr-Abl in several chronic myelogenous leukemia cell lines, with IC50 values in the low nanomolar range.(In Vivo):Bosutinib (oral gavage; 75 mg/kg twice daily or 150 mg/kg once daily) has activity against human KU812 xenografts in nude mice. Bosutinib (150 mg/kg; once daily, 5 days weekly) has activity against syngeneic Bcr-Abl WT and mutant Ba/F3 xenografts.