Adjuvant toripalimab or combined with S-1 in recurrent, previously irradiated head and neck squamous cell carcinoma treated with salvage surgery: A phase II clinical trial (The RePASS study).

6039Background: The predominant pattern of failure for Head and Neck Squamous Cell Carcinoma (HNSCC) is locoregional disease. Salvage surgery remains the standard of care for operable disease. Re-i...