An Open-Label, Randomized, Multicenter Phase 3 Study Investigating the Efficacy and Safety of BGB-43395 Plus Letrozole Versus CDK4/6 Inhibitors (Abemaciclib, Palbociclib, Ribociclib) Plus Letrozole in Patients With Advanced or Metastatic HR+/HER2- Breast Cancer Who Have Not Received Prior Systemic Anticancer Treatment for Advanced or Metastatic Disease
NCT07492641 · NOT YET RECRUITING · Phase 3