Figure 2. Multivariate regression analysis for axillary pNNR.
NAC = neoadjuvant chemotherapy; pNNR = pathologically node negative rate; P = paclitaxel; Crb = carboplatin; H = Trastuzumab (Herceptin). In multivariate analysis, trastuzumab added and ER-poor status showed higher pNNR in HER2-positive breast cancer.