Fig. 5: Survival outcome according to pCR status in primary HER2-negative patients.

RFI (a) and OS (b) according to pCR status in primary HER2-negative patients. Log-rank P value for non-pCR-HER2-0 VS. non-pCR-HER2-low patients: RFI, P = 0.004; OS, P = 0.532. Log-rank P value for pCR-HER2-0 VS. pCR-HER2-low patients: RFI, P = 0.919; OS, P = 0.864. RFI recurrence free interval, OS overall survival, pCR pathological complete response, HER2 human epidermal growth factor receptor-2.