As shown in Figure 7B, the risk scores of BRCA patients displayed negative correlations with the infiltration of B cells, CD4+ T cells, CD8+ T cells, neutrophils, and dendritic cells in BRCA tissues, while the risk scores of BRCA patients displayed positive correlations with the infiltration of macrophages (p < 0.05). The gene discussed is CD8A; the disease is invasive breast carcinoma.