ERBB2 and breast cancer: The area under the curve (AUC) of the prognostic risk model were 0.778 and 0.762 for luminal BC, 0.823 and 0.897 for HER2+ BC, 0.927 and 0.966 for TNBC at 3-years and 5-years, respectively (Figure 5F, Figure 6F and Figure 7F).