Based on the apparent efficacy and favorable safety profile of previous PD-1 and cetuximab combination therapy, Penpulimab (PD-1 antibody) combined with cetuximab in the first-line treatment of patients with recurrent/metastatic SCCHN are used to assess the efficacy and safety of the regimen. Among them, Penpulimab (PD-1 antibody) is approved for adult patients with relapsed or refractory classical Hodgkin's lymphoma who have received at least second-line systemic chemotherapy in China. Cetuximab is approved in China for first-line treatment of recurrent/metastatic SCCHN in combination with chemotherapeutic drugs platinum and fluorouracil.~This study plans to enroll 48 patients with untreated recurrent/metastatic squamous cell carcinoma of the head and neck who will receive Penpulimab injection combined with cetuximab. Cetuximab 500 mg/m2 without PD-1 drugs for 14 days prior to Cycle 1. Cetuximab Injection 500 mg/m2 and Penpulimab Injection 200 mg are intravenously infused on Day 1 (D1) of Cycle 1, with 2 weeks (14 days) as a cycle. Penpulimab will be administered for no more than 96 weeks (48 cycles), and cetuximab will be administered until disease progression, unacceptable toxicity, or withdrawal decision by the subject.
This trial is a multicenter, prospective, single-arm exploratory clinical study to evaluate the efficacy and safety of Penpulimab injection combined with cetuximab in the first-line treatment of recurrent/metastatic squamous cell carcinoma of the head and neck