ERBB2 and invasive ductal breast carcinoma: The patient was a 38-year-old premenopausal woman with TNBC (26 mm [measured by breast ultrasound] ER negative, PR negative, HER2 IHC 0, invasive ductal carcinoma, grade 3, in the right breast, lymph node-positive, BRCA1 positive, clinical N0).