ERBB2 and breast carcinoma: At the San Antonio Breast Cancer Symposium (SABCS, 2014), a recent study in the EORTC10085/TBCRC/BIG/NABCG program showed that 93% of 1822 MBC cases had high ER expression, 35% had high PR expression, and 9% had positive human epidermal growth factor receptor-2 (HER2) expression [8].