ALAMEDA, Calif.--(BUSINESS WIRE)--Exelixis, Inc. (Nasdaq: EXEL) today announced results from a phase 2, investigator-sponsored trial of cabozantinib (CABOMETYX®) in combination with pembrolizumab in patients with recurrent or metastatic head and neck squamous cell carcinoma (HNSCC). The data will be presented at the 2022 American Society of Clinical Oncology (ASCO) Annual...