Considering that tumors that escape immune editing in cancer patients often express molecules that suppress the antitumor immune response, such as PD-L1 (also known as B7-H1), indoleamine 2,3-dioxygenase (IDO) and others, here expression levels of these molecules were correlated with TGF-β expression using Pearson correlation analysis. Here, TGFB1 is linked to cancer.