The stromal cells in BC include M1 and M2 macrophages, N1 and N2 neutrophils, cancer‐associated fibroblasts (CAFs), CD8+ T lymphocytes, regulatory T lymphocytes (Tregs), B lymphocytes, plasma cells, mature and immature dendritic cells, myeloid‐derived suppressor cells (MDSCs), mesenchymal stem cells, endothelial and lymph endothelial cells, and adipocytes.44 This evidence concerns the gene CD8A and cancer.