A Phase 3 Randomized, Open-label Study to Evaluate the Efficacy and Safety of Petosemtamab Plus Pembrolizumab vs Pembrolizumab in First-line Treatment of Recurrent or Metastatic PD-L1+ Head and Neck Squamous Cell Carcinoma

This is a Phase 3 randomized, open-label study to evaluate the efficacy and safety of petosemtamab plus pembrolizumab vs pembrolizumab in first-line treatment of recurrent or metastatic PD-L1+ HNSCC. HNSCC patients should not have had previous systemic therapy administered in the incurable recurrent or metastatic setting, although previous systemic therapy as part of multimodal treatment for locally advanced disease is allowed if PD was ≥6 months after the last platinum-containing therapy dose. Previous treatments with anti PD-(L)1 or anti-EGFR therapies are not allowed. In the case of cetuxim…