Frontiers in Oncology
Oral selective estrogen receptor degraders and biomarker-driven therapy in ER-positive breast cancer: mechanisms, clinical evidence, and future directions
Breast cancer (BC) remains one of the most prevalent malignancies worldwide, with approximately 70% of cases being estrogen receptor-positive (ER+). Endocrine therapy targeting the estrogen receptor has revolutionized BC treatment, evolving from surgical oophorectomy to selective estrogen receptor modulators (SERMs) and aromatase inhibitors (AIs). Selective estrogen receptor degraders (SERDs) represent the latest advancement in hormonal therapy, offering complete receptor blockade and degradation. This review compr …