BMS-833923 (XL139)
BMS-833923 (XL139) is a small molecule inhibitor of Smoothened (SMO), a component of the hedgehog (Hh) signaling pathway. Exelixis discovered BMS-833923 and out-licensed the compound to Bristol-Myers Squibb Company. BMS-833923 is currently being characterized in a Phase 1b clinical trial in combination with dasatinib in CML patients.
