A Study to Assess the Efficacy and Safety of Enzalutamide With Trastuzumab in Subjects With Human Epidermal Growth Factor Receptor 2 Positive (HER2+), Androgen Receptor Positive (AR+) and Estrogen Receptor Negative (ER-) Metastatic or Locally Advanced Bre

The purpose of this study is to evaluate the efficacy of enzalutamide with trastuzumab in subjects with HER2+ AR+ and ER-/PgR- metastatic or locally advanced breast cancer.