MSLN was positively correlated with immunosuppressive genes in ovarian cancer, such as LGALS9, CD276, TMIGD2, CD200, TNFRSF14 (Figure 7C), and human leukocyte antigen (HLA)-related families including HLA-DRA, HLA-DRB1, HLA-DPA1, HLA-DMA, HLA-E, etc. (Figure 7D; Supplementary Table 11). This evidence concerns the gene HLA-DRB1 and ovarian cancer.