PLK1 inhibition by onvansertib enhances paclitaxel efficacy and overcomes resistance in HR+/HER2- breast cancer refractory to endocrine therapy and CDK4/6 inhibitors.
Hormone receptor-positive (HR+)/HER2-negative metastatic breast cancer that progresses on CDK4/6 inhibitors (CDK4/6i) and endocrine therapy (ET) faces a major therapeutic challenge, and chemotherapy is frequently used despite its modest clinical benefit. Paclitaxel is commonly used in this setting; however, intrinsic a...