ERBB2 and neoplasm: Tumor subtypes including HER2 + /luminal (OR 3.92; 95% CI 1.71–9.03; p = 0.001), HER2 + /non-luminal (OR 24.1; 95% CI 9.31–62.2; p < 0.001), and TNBC (OR 4.95; 95% CI 2.11–11.6; p < 0.001) were statistically significantly associated with higher likelihood of axillary pCR.