ERBB2 and neoplasm: Age, race, marital status, tumor differentiated grade, histology, TMN stage, surgery, radiotherapy, chemotherapy, duration to begin treatment, HR status, and HER2 status, which were selected by the Fine and Gray method, were enrolled in nomogram model 1 to predict the 5-year, 8-year, and 10-year survival probability of MBC patients (Figure 3A).