As exhibited in Figure 6(a), we found the association between SLC7A11 expression and infiltration levels of B cells (r = 0.273, p = 1.94e−02), CD8+ T cells (r = −0.007, p = 9.55e−01), CD4+ T cells (r = −0.037, p = 7.55e−01), macrophages (r = 0.106, p = 3.72e−01), neutrophils (r = 0.051, p = 6.69e−01), and DCs (r = 0.206, p = 8.06e−02) in ACC. This evidence concerns the gene CD4 and adrenal cortex carcinoma.