Abstract: Oral formulations of the drug product IPI-926 are described. Pharmaceutical formulations (e.g., solid dosage forms) that are useful for the oral administration of a compound of formula (I), or a pharmaceutically acceptable salt thereof (e.g., IPI-926), to a human or animal subject are disclosed. The formulations can further include, for example and without limitation, one or more other pharmaceutically-acceptable filler(s), binder(s), surfactant(s), and disintegrant(s); as well as one or more other therapeutic agent(s). Methods of preparing and using said formulations are also disclosed.