Recently, virus‐specific TRM cells (CD103+CD69+) for influenza A virus (IAV), Epstein–Barr virus (EBV), and/or cytomegalovirus (CMV) were reported to populate the mouse and human GBM microenvironments, and hepatitis B virus (HBV)‐specific CD8+ TRM cells in HCC tissues can be reactivated by viral peptides.102, 121. Here, CD8A is linked to hepatocellular carcinoma.