PD-L1 expression on the tumor cell membrane was negative in 82 patients (57%), positive in 63 patients (43%) and technically not evaluable (NE) in 15 patients, while PD-L2 was negative in 126 patients (89%), positive in 15 (11%) patients and NE in 18 patients. The gene discussed is PDCD1LG2; the disease is neoplasm.