In contrast, alterations in the known breast cancer biomarkers HER2 (ERBB2) (Fig. 5b), ER (ESR1) (Fig. 5c), and PIK3CA (Fig. 5d) showed no correlation with overall survival in the same invasive breast cancer data set we examined for BRF2 alterations. The gene discussed is BRF2; the disease is breast carcinoma.