ERBB2 and neoplasm: pCR was not significantly associated with age (≥ 50yo vs < 50yo (p = 0.20), race (p = 0.87) or ethnicity (p = 1.0), T-stage (p = 0.09), N stage (p = 0.31), and Nottingham grade (p = 0.09), but was significantly associated with tumor subtype (p < 0.001), with ER−/HER2+ (56.5%) having the highest pCR rate, followed by triple negative (31.0%), ER+/HER2+ (23.0%) and ER+/HER2− (8.5%).