Medivation, Inc. is a biopharmaceutical company. The Company is focused on the development and commercialization of therapies to treat serious diseases for which there are limited treatment options. The Company, in collaboration with Astellas Pharma, Inc. (Astellas), has one commercial product, XTANDI (enzalutamide) capsules (XTANDI). XTANDI has received marketing approval in the United States, Europe and other countries across the world for the treatment of patients with metastatic castration-resistant prostate cancer (mCRPC) and in Japan for the treatment of patients with castration-resistant prostate cancer (CRPC). The Company, in collaboration with Astellas, is also conducting investigational studies of enzalutamide in prostate cancer and in advanced breast cancer. It has developed a small molecule inhibitor of the sterol regulatory element-binding protein, or SREBP, pathway which it refers to as MDV4463.