ALAMEDA, Calif.--(BUSINESS WIRE)--Exelixis, Inc. (Nasdaq: EXEL) today announced results from the final analysis of the second primary endpoint of overall survival (OS) from the phase 3 COSMIC-312 trial, which evaluated cabozantinib (CABOMETYX®) in combination with atezolizumab versus sorafenib in patients with previously untreated advanced hepatocellular carcinoma (HCC). The final analysis...