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China Oncology ; (12): 777-783, 2016.
Article in Chinese | WPRIM | ID: wpr-501606


Background and purpose:The third generation of aromatase inhibitors (AI) in postmenopausal hormone receptor-positive patients is the routine treatments in endocrine therapy. The 500 mg fulvestrant showed clini-cal beneifts in patients with previous AI treatment. This study aimed to access the effcacy and safety of 500 mg fulves-trant in estrogen receptor (ER) positive postmenopausal patients who had previous AI treatments with locally advanced and metastatic breast cancer.Methods:This study retrospectively analyzed the clinical data from 188 post-AI ER positive and (or) progesterone receptor (PR)-positive locally advanced and metastatic breast cancer patients treated with 500 mg fulvestrant in Fudan University Shanghai Cancer Center from Jul. 2011 to Dec. 2015. Primary end point was progression-free survival (PFS). Secondary end points were objective response rate (ORR), clinical beneift rate (CBR) and safety proifle.Results:After the median follow-up of 11.3 months, median PFS was 5.9 months (95%CI: 4.2-7.5), CBR was 40.0% and ORR was 3.4%. COX proportional hazards regression analysis indicated that PFS was correlated with the number of metastatic sites (HR=1.92, 95% CI: 1.2-2.9,P =0.002) and previous lines of chemotherapy (HR=1.52, 95%CI:1.0-2.1,P=0.022). Six patients stopped the treatment for intolerable adverse events.Conclusion:The treatment of 500 mg fulvestrant has a favorable effcacy and safety in treatment of post-AI ER positive postmenopausal patientswith metastatic breast cancer.