Recruiting Methotrexate, Erlotinib, and Celecoxib for the Treatment of Recurrent/Metastatic Head and Neck Cancer in a Rural Midwest United States Population NCT06997068 Conditions Carcinoma, Clinical Stage IV HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8, Head and Neck Cancer, +34 more Locations Mayo Clinic in Rochester — Rochester, Minnesota, United States View Trial Details