CD274 and neoplasm: CC-PD-L1 and IC-PD-L1-positivity did not depend on pT (Fisher's exact test) (p=0.748 and p=0.158), presence of lymph node metastases (p=0.640 and p=0.656), tumor differentiation grade G1/G2,3 (p=1 and p=0.815), (Mann-Whitney U test) age (p=0.523 and p=0.072) and depth of invasion (p=0.361 and 0.502) respectively (Table 2).