ERBB2 and triple-negative breast carcinoma: The results also revealed that, at least with current cutoff, the risk score was not a good index to identify the tricky triple-negative breast cancer, which exhibited no statistical difference in ER status by IHC (Figure 5E) between groups, more PR negative patients (Figure 5F, p = 0.02) and less HER2 negative (Figure 5G, p = 5.55 × 10−5) patients in high-risk score groups.