Differential prognostic value of PD-L1 expression in oropharyngeal squamous cell carcinoma based on HPV status.
OBJECTIVE To investigate the correlation between PD-L1 expression and HPV status in oropharyngeal squamous cell carcinoma (OPSCC) and evaluate their prognostic implications. METHODS We retrospectively analyzed 131 OPSCC patients treated at the Affiliated Hospital of Qingdao University. PD-L1 and p16 expression were e...