Context: - There has been increasing interest in understanding the role of programmed death receptor-1 (PD-1)/programmed death ligand-1 (PD-L1) pathway in cancer biology and its clinical significance in cancer therapy.
Objective: - To discuss the studies of the PD-1/PD-L1 pathway in human papillomavirus-positive head and neck squamous cell carcinoma, focusing on the pathogenesis of cancer, characterization of the tumor microenvironment, and the effect of such studies in laboratory medicine.
Data Sources: - Data sources included peer-reviewed literature and reputable online sources.
Conclusions: - To date, there are few studies of PD-1 and PD-L1 in human papillomavirus-positive head and neck squamous cell carcinoma. There is evidence that the PD-1/PD-L1 pathway has a role in this type of cancer; however, further studies are needed to better characterize the effect of the human papillomavirus and its use as a marker of therapy response.
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