ERBB2 and neoplasm: Basal-like/TNBC has a diagnosis rate of 20%, and does not express ER, PR, or HER2 [6,7,8,9,10], but a high expression of genes related to cell proliferation and a high number of mutations can be observed in the genome, such as the breast cancer gene 1 mutation, which is found in 80% of TNBCs.