This is a Phase 2, Randomized, Double-Blind, Placebo-Controlled, Multicenter Study of Efficacy and Safety of Enzalutamide in Combination With Exemestane in Patients With Advanced Breast Cancer That Is Estrogen or Progesterone Receptor Positive and HER2-Normal.
The purpose of this study is to determine if enzalutamide given in combination with exemestane is safe and effective in patients with advanced breast cancer.