A Phase 2 Neoadjuvant Trial Comparing the Biological Effects of 2 Weeks of Abemaciclib (LY2835219) in Combination with Anastrozole to those of Abemaciclib Monotherapy and Anastrozole Monotherapy and Evaluating the Clinical Activity and Safety of a Subsequent 14 Weeks of Therapy with Abemaciclib in Combination with Anastrozole in Postmenopausal Women with Hormone Receptor Positive, HER2 Negative Breast Cancer

monarcHER – A Phase 2, Randomized, Multicenter, 3-Arm, Open-Label Study to Compare the Efficacy of Abemaciclib plus Trastuzumab with or without Fulvestrant to Standard-of-Care Chemotherapy of Physician’s Choice plus Trastuzumab in Women with HR+, HER2+ Locally Advanced or Metastatic Breast Cancer