Among 396 patients, 101 (25.5%), 89 (22.5%), 60 (15.7%), 33 (8.3%), and 14 (3.5%) had positive IHC staining of PD-L1 in ≥1%, ≥5%, ≥10%, ≥25%, and ≥50% of tumour cells, respectively. This evidence concerns the gene CD274 and neoplasm.