reported that a basal group of breast cancer patients categorized by expression of genes associated with myoepithelial cells, KRT5 (keratin 5), KRT17 (keratin 17), CNN1 (calponin 1), CAV1 (caveolin), and LAMB1 (laminin), is most aggressive with a poor DFS and OS 14. This evidence concerns the gene KRT5 and breast carcinoma.