The pathology report showed ductal invasive carcinoma of 5.3 centimeters (pT3), with two out of 40 axillary lymph nodes involved (pN1), absence of oestrogen receptor (ER 0%) and progesterone receptors (PGR 0%), Ki-67 33%, and HER-2/neu expression at 95%. This evidence concerns the gene ERBB2 and invasive ductal breast carcinoma.