In 43 of the 74 cases (58.1%) PD-L1 expression was identified, including 1 case (1.4%, 1/74) with tumor PD-L1+, 25 cases (33.8%, 25/74) with TIL PD-L1+, and 17 cases (23.0%, 17/74) with tumor and TIL co-expression of PD-L1, respectively. Here, CD274 is linked to neoplasm.