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. 2023 Apr 4;55(4):1210–1221. doi: 10.4143/crt.2022.1633

Fig. 4.

Fig. 4

Human epidermal growth factor receptor 2 (HER2) status and disease-free survival analysis after neoadjuvant chemotherapy (NACT). (A) Distribution of HER2-positive according to hormone receptor (HR) and HER2 status before NACT. (B) The impact on disease-free survival events rate of HER2 gain and targeted therapy. (C) Kaplan-Meier survival analysis for disease-free survival according to HER2 status after NACT (HER2-positve 87.9% vs. HER2-negative maintained 79.5%; p=0.048). (D) Kaplan-Meier survival analysis for disease-free survival according to targeted therapy in HER2-positive patients after NACT.