Immunological Landscape of Head and Neck Cancer: Mechanisms of Immune Escape and the Tumor Microenvironment -- Drug Targets and Strategies in the Clinical Development of Immunotherapy for Head and Neck Cancer -- Immunotherapy in Locally Advanced Nasopharyngeal Carcinoma -- Immunotherapy in Recurrent and Metastatic Nasopharyngeal Carcinoma -- Beyond PD-1/PD-L1 Immune Checkpoint Inhibitors: Other Targets and Approaches for Head and Neck Cancer -- Translational and Clinical Approach to Combining Immunotherapy with Radiotherapy in the Treatment of Head and Neck Cancer -- Clinical Application of Immunotherapy in the Perioperative Management of Head and Neck Cancer -- The Role of Immune Checkpoint Inhibitors in the Treatment of Less Common Head and Neck Cancers -- Development of Predictive Biomarkers to Immunotherapy in Head and Neck Cancer. .