None of the patients had received treatment with PD-1/PD-L1 inhibitors.<h4>Results</h4>PD-1 expression ≥1% in TILs was observed in 83.5% of cases and was associated with pT stage (p=0.02), grade 3 (p=0.004), and adenocarcinoma subtype (p=0.05). Here, CD274 is linked to adenocarcinoma.