Exelixis is a biopharmaceutical firm that discovers, develops, and commercializes treatments for cancer. Its lead molecule cabozantinib is indicated for the treatment of patients with metastatic medullary thyroid cancer (as Cometriq) and advanced renal cell carcinoma, or kidney cancer, and hepatocellular carcinoma, or liver cancer (as Cabometyx). Exelixis and partner Roche have also brought Cotellic to market for the treatment of melanoma.