CD8A and adrenal cortex carcinoma: Lastly, the composite mRNA expression signature suppressed in CS‐ACCs was positively associated with CD8+ T cell (r = 0.35), Treg cell (r = 0.36) and M2 macrophage (r = 0.49) infiltration and negatively associated with DCa (r = −0.39) in the ACC TME, suggesting a link between the prognostic DEIG signature expression and prognostic TIIC profiles.