A Multicenter, Open-label, Randomized Phase 2 Study Evaluating Continuous Weekly Dosing of Ficerafusp Alfa (BCA101) in Combination With Pembrolizumab Versus an Alternative Ficerafusp Alfa Dosing Regimen for First-Line Treatment of Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma | Arctuva