Abstract:Abstract: Objective To assess the efficacy of chemotherapy plus ovarian function suppression therapy (Goserelin) for premenopausal women with hormone-receptor-positive and lymph-node-positive (N1) breast cancer. Methods The data of 167 premenopausal women treated in our hospital from January 2001 to October 2009 for hormone-receptor-positive and lymph-node-positive (1-3) breast cancer were retrospectively reviewed. On the basis of the use of ovarian function suppression (Goserelin) or not, the patients were categorised into two groups. In group A, 55 HR-positive patients received 6 courses of chemotherapy plus 6-month ovarian function suppression followed by 5-year endocrine therapy. In group B, 112 HR-positive patients only received 6 courses of chemotherapy with 5-year endocrine therapy. Results The median follow-up period was 58 months by the end of 2015. In univariate analysis, chemotherapy plus 6-month ovarian function suppression therapy improved 5-year disease-free survival (DFS) and 5-year overall survival (OS). In multivariate analysis, Goserelin treatment, lymphovascular invasion (LVI) and histological grade were the independent factors influencing DFS and OS. Conclusions For the patients ≤45 years with lymph node metastasis (1-3) and HR-positive breast cancer, chemotherapy plus 6-month ovarian function suppression therapy can result in significantly improved therapeutic efficacy. LVI and histological grade are powerful independent adverse prognostic factors and should be considered in decisions about adjuvant treatment in breast cancer patients with the positive hormone receptor and lymph node metastasis.