ERBB2 and triple-negative breast carcinoma: After grouping 91 genes on 10 signaling pathways, we found that the DNA repair pathway for the triple-negative breast cancer (TNBC) subgroup, the RTK/RAS/MAPK and cell cycle pathways for the HR–/HER2+ subgroup, the DNA repair, RTK/RAS/MAPK, and NOTCH pathways for the HR+/HER2– subgroup, and the DNA repair, epigenome, and diverse pathways for the HR+/HER2+ subgroup were all significantly differently altered between IBC and non-IBC.