The expression levels of PIGC were significantly and positively correlated with the infiltrating levels of B cells (r = 0.339, p < 0.001), CD8+ T cells (r = 0.194, p < 0.001), CD4+ T cells (r = 0.397, p < 0.001), macrophages (r = 0.426, p < 0.001), neutrophils (r = 0.309, p < 0.001) and DCs (r = 0.326, p < 0.001) in HCC (Figure 8). Here, CD4 is linked to hepatocellular carcinoma.