Aiming to estimate the distribution of immune infiltrating cells in the TME of BC in various LMI groups, the CIBERSORT algorithm was performed to disclose that CD8+ T cells, gamma delta T cells, resting NK cells, resting dendritic cells, and neutrophils were notably enriched in TME of the low-LMI group while macrophages M0 and M2 were markedly strengthened in the high-LMI group (Figure 6D). The gene discussed is CD8A; the disease is breast cancer.