Kaplan-Meier survival analysis according to the expression of NGF and HO1. A. Overall survival (OS) and relapse-free survival (RFS) in 145 breast carcinoma (BRCA) patients. B. OS and RFS in 129 BRCA patients who received adjuvant chemotherapy. C. OS and RFS in 121 BRCA patients who received post-operative endocrine therapy.