ERBB2 and triple-negative breast carcinoma: Stratification of survival curves with higher RNB is most pronounced for triple-negative breast cancer (TNBC) with an absolute difference of 64% in 5-year overall survival between ypN0 and ypN3 patients, and lowest for the ER+/HER2− subtype with a 25% absolute difference in 5-year OS between ypN0 and ypN3 patients.