ERBB2 and breast carcinoma: The annual hazard function for BCSS showed that there were significantly different trends in the HoR (+)/HER2 (-) and HoR (+)/HER2 (+) subtypes between young Chinese and White patients.<h4>Conclusions</h4>There are disparities in prognosis and annualized hazard function between young Chinese and White females with breast cancer in different molecular subtypes.