Adenocarcinoma, overall, showed greater levels of PD-L1 staining with intermediate expression levels ranging from 43.3–49.7% with clones 405.9A11, E1L3N, 22C3, and SP142, and high expression ranging from 62.2–69.3% with clones 28-8 and SP263. This evidence concerns the gene CD274 and adenocarcinoma.