In a univariate analysis, the odds of achieving pCR were 14 times higher in the ER-negative arm compared with the ER-positive group (p = 0.004). This was confirmed by the multivariate analysis: ER status (OR: 0.01, 95% CI: 0.00–0.16; p = 0.005)....Our study confirmed that the TCbH-P regimen is safe and relatively effective in the neoadjuvant treatment of patients with HER2-positive breast cancer.