CD274 and adenocarcinoma: Sixty (96.8%) patients had adenocarcinoma and two (3.2%) had squamous cell carcinoma; the expression of PD-L1 was <1% in eight (13.1%) patients, between 1 and 49% in 35 (57.4%), and ≥50% in 18 (29.5%); and the PD-L1 status was missing in one patient.