Other supportive data for the diagnostic significance of PDL-1, CTLA-4, PD-1, FOXP3, MIC-B, miR-155, and miR-195in BC patients, univariate regression analysis showed that PDL-1, CTLA-4, PD-1, FOXP3, MIC-B, miR-155, and miR-195expression were significantly associated with BC incidence. Here, CTLA4 is linked to breast cancer.