Study of Intratumoral (IT) Ulevostinag (MK-1454) in Combination With Intravenous (IV) Pembrolizumab (MK-3475) Compared to IV Pembrolizumab Alone as the First Line Treatment of Metastatic or Unresectable, Recurrent Head and Neck Squamous Cell Carcinoma (HNSCC) (MK-1454-002)
CompletedNCT04220866
Merck Sharp & Dohme LLCHead and Neck Squamous Cell Carcinoma (HNSCC)
Start: 2020-03-04End: 2022-09-30Updated: 2025-10-29