Use of Metronomic Chemotherapy in Hormone Receptor‐Positive/HER2‐Negative Metastatic Breast Cancer: A Retrospective Multicenter Study
ABSTRACT Purpose The optimal chemotherapy strategy after progression on cyclin‐dependent kinase 4/6 inhibitors (CDK4/6i) in hormone receptor‐positive/human epidermal growth factor receptor 2‐negative (HR+/HER2−) metastatic breast cancer remains a matter of controversy. This study evaluated the efficacy of metronomic ch...