An Observational Study of Clinical Treatments for Patients With Oropharyngeal Carcinoma

Inclusion Criteria: * Oropharyngeal cancer: Base of Tongue/Tonsil/Posterior Pharyngeal Wall/Soft Palate; * T1, T2, T3, and T4 stage. * Age 18 - 90. * Male or female. * Good compliance. * No other severe related diseases that may impact the treatment (such as other tumors, severe heart, lung and central nervous system diseases, etc.). * Negative pregnancy test (for female patients with fertility). * Male patients with fertility and female patients with fertility and pregnancy risk must agree to use contraceptive methods throughout the study period, and continued until at least 6 months after the last dose of cisplatin. Female patients do not have fertility. Female patients with postmenopausal status. Exclusion Criteria: * Patients who have previously been diagnosed with immunodeficiency or known human immunodeficiency virus (HIV) or acquired immunodeficiency syndrome (AIDS)-related diseases. * Patients with a known history of active tuberculosis (TB). * Pregnant women or lactating women. * The doctors believes that it is inappropriate for patients to participate in the trial: having, for example, severe acute or chronic medical conditions (including immune colitis, inflammatory bowel disease, non-infectious pneumonia, pulmonary fibrosis) or mental illness (including recent time \[within the past year\] or active suicidal ideation or behavior).