A retrospective study of 500 mg fulvestrant in recurrent or metastatic breast cancer patients pretreated with the third generation of aromatase inhibitors
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 clinical benefits in patients with previous AI treatment.This study aimed to access the efficacy and safety of 500 mg fulvestrant in estrogen receptor(ER) positive postmenopausal patients who had previous AI treatments with locally advanced and metastatic breast cancer.Methods:This study retrospectively analy...