CD274 and neoplasm: Although TILs PD-L1 expression was not included in this classification [19], we found that within type I tumors (n = 17), nine tumors showed high TILs PD-L1 and eight tumors showed low TILs PD-L1; within type II tumor (n = 34), five tumors showed high TILs PD-L1 and 29 tumors showed low TILs PD-L1.