Exelixis, Inc. (Exelixis) is a biotechnology company engaged in developing small molecule therapies for the treatment of cancer. The Company is focusing its resources and development efforts on cabozantinib (XL184). It also has a portfolio of other compounds. Cabozantinib is the inhibitor of MET in clinical development and is being evaluated in a development program encompassing multiple cancer indications. The clinical program for cabozantinib is focused on the treatment of metastatic castration-resistant prostate cancer (CRPC) and medullary thyroid cancer but also includes the evaluation of other tumor types. Cabozantinib inhibits MET, VEGFR2 and RET, proteins that are key drivers of tumor growth, vascularization and/or metastasis.