17th Yanzhao Breast Cancer Forum | Professor Shusen Wang: From MECCA to SYSUCC-020—Endocrine Therapy Plus Metronomic Chemotherapy Opens a New Chapter in HR-Positive/HER2-Negative Breast Cancer Treatment
Hormone receptor-positive, HER2-negative (HR+/HER2−) breast cancer is the most common molecular subtype of breast cancer. For decades, the combination of endocrine therapy and chemotherapy was considered a therapeutic “forbidden zone” because of its theoretical basis and early clinical evidence. With the emergence of novel endocrine agents, chemotherapeutic drugs, antibody–drug conjugates (ADCs), and evolving treatment strategies, this traditional view is gradually being challenged. In recent years, metronomic chemotherapy has emerged as a promising approach to combining chemotherapy with endocrine therapy because of its distinctive antiangiogenic and immunomodulatory mechanisms and favorable safety profile. The MECCA and SYSUCC-020 studies have provided important evidence supporting this strategy in the first-line setting and among patients previously treated with CDK4/6 inhibitors, respectively.









