1. Ovarian Ablation Using Goserelin Improves Survival of Premenopausal Patients with Stage II/III Hormone Receptor-Positive Breast Cancer without Chemotherapy-Induced Amenorrhea
- Author
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Jun-Jie Wang, Huan-Xin Lin, Juan Zhou, Jia-Yuan Sun, Qin Lin, Zhen-Yu He, Feng-Yan Li, and San-Gang Wu
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Oncology ,endocrine system ,Cancer Research ,medicine.medical_specialty ,endocrine system diseases ,Ovarian Ablation ,Stage ii ,Chemotherapy induced amenorrhea ,Breast cancer ,Internal medicine ,medicine ,skin and connective tissue diseases ,Gynecology ,business.industry ,Goserelin ,medicine.disease ,Premenopause ,Hormone receptor ,Ovarian ablation ,Original Article ,Amenorrhea ,Breast neoplasms ,medicine.symptom ,business ,Therapy-induced amenorrhea ,medicine.drug ,Hormone - Abstract
Purpose The purpose of this study was to assess the value of ovarian ablation using goserelin in premenopausal patients with stage II/III hormone receptor-positive breast cancer without chemotherapy-induced amenorrhea (CIA). Materials and Methods We retrospectively reviewed the data of breast patients treated between October 1999 and November 2007 without CIA. The Kaplan-Meier method was used for calculation of the survival rate. Log rank method and Cox regression analysis were used for univariate and multivariate prognostic analysis. Results The median follow-up period was 61 months. Initially, 353 patients remained without CIA after chemotherapy and 98 among those who received goserelin and tamoxifen (TAM). In univariate analysis, goserelin improved locoregional recurrence-free survival (LRFS) (98.9% vs. 94.1%, p=0.041), distant metastasis-free survival (DMFS) (85.4% vs. 71.9%, p=0.006), disease-free survival (DFS) (85.4% vs. 71.6%, p=0.005), and overall survival (OS) (93.5% vs. 83.5%, p=0.010). In multivariate analysis, goserelin treatment was an independent factor influencing DMFS (hazard ratio [HR], 1.603; 95% confidence interval [CI], 1.228 to 2.092; p=0.001), DFS (HR, 1.606; 95% CI, 1.231 to 2.096; p=0.001), and OS (HR, 3.311; 95% CI, 1.416 to 7.742; p=0.006). In addition, treatment with goserelin resulted in significantly improved LRFS (p=0.039), DMFS (p=0.043), DFS (p=0.036), and OS (p=0.010) in patients aged < 40 years. In patients aged ≥ 40 years, goserelin only improved DMFS (p=0.028) and DFS (p=0.027). Conclusion Ovarian ablation with goserelin plus TAM resulted in significantly improved therapeutic efficacy in premenopausal patients with stage II/III hormone receptor-positive breast cancer without CIA.
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