NCT05783921 2023-07-28A Clinical Trial of TQB2618 Injection Combined With Penpulimab Injection and Chemotherapy Versus Penpulimab Injection Combined With Chemotherapy in First-line Treatment of Relapsed/Metastatic Head and Neck Squamous Cell CarcinomaChia Tai Tianqing Pharmaceutical Group Co., Ltd.Phase 1/2 Unknown60 enrolled