A Study for Identification of Immune Determinants for Response to Nivolumab in Recurrent and/or Metastatic Head and Neck Squamous Cell Carcinoma

A study for identification of immune determinants for response to Nivolumab in Recurrent /Metastatic HNSCC(Head and neck squamous cell carcinoma) patients. Recurrent and metastatic head and neck squamous cell carcinoma is incurable and requires aggressive treatment, resulting in functional disability, dismal prognosis, and high mortality rate. Prognosis of Recurrent and metastatic head and neck squamous cell carcinoma is poor, with limited treatment options and survival rates of 6-9 months following standard-of-care (SOC) therapies. Clinical trials have demonstrated promising clinical activity of anti PD-1(programmed death-1) therapy in head and neck squamous cell carcinoma. Currently, nivolumab were approved for head and neck squamous cell carcinoma refractory to platinum-based therapy. However, the response rate of anti PD-1(programmed death-1) therapy is relatively low and durable clinical benefit is limited to the minority of patients. Moreover, the presence of PD-1(programmed death-1) did not clearly predict response and treatment survival outcome, reflecting imperfection of this biomarker. Actually, PD-1(programmed death-1) negativity cannot preclude the therapeutic benefit of PD-1(programmed death-1) blockade, and vice versa. Hence, development of reliable predictive biomarkers is essential for proper patient selection to maximize clinical benefit of PD-1(programmed death-1) blockade in head and neck squamous cell carcinoma patients. Therefore, we need to select patients who are most likely to benefit from anti PD-1(programmed death-1) therapy and identify the better biomarker to predict the response to PD-1(programmed death-1) blockade in head and neck squamous cell carcinoma patients. patients earlier than tumor assessment by imaging scan. In the current study, we aimed to elucidate immune-related biomarkers to predict response with tumor tissue and peripheral blood from Recurrent /Metastatic HNSCC(Head and neck squamous cell carcinoma) patients treated