The basal-like group comprises cancers that lack hormone receptor expression and HER2 expression, thus can be partially included in the TN subgroup, and they are additionally characterized by the expression of genes related to the basal/myoepithelial mammary cell phenotype, such as CK 5/6, laminin, c-KIT, α6 integrin, fatty acid-binding protein 7, P-cadherin, epidermal growth factor receptor (EGFR), and NF-κB [1,3,5]. Here, ERBB2 is linked to cancer.