A 60-year-old female with no family history of cancer was diagnosed in 2005 with invasive ductal carcinoma of the left breast (cT3N0M0), stage IIB, that was estrogen receptor (ER)-negative, progesterone receptor (PR)-positive and human epidermal growth factor receptor 2 (HER2)-negative. Here, ERBB2 is linked to invasive ductal breast carcinoma.