CD8A and breast cancer: A Spearman correlation analysis of TISIDB revealed that IMMT expression negatively correlated with most tumor-infiltrating lymphocytes in BC (Fig. 6A), such as effector memory CD8 T cells (Tem_CD8) (Fig. 6B), CD56bright killer cells (Fig. 6C), natural killer (NK) cells (Fig. 6D), and natural killer T (NKT) cells (Fig. 6E).