Monarcher: A Randomized Phase 2 Study of Abemaciclib Plus Trastuzumab with or without Fulvestrant Versus Trastuzumab Plus Standard-of-Care Chemotherapy in Women with HR , HER2 Advanced Breast Cancer

Johannes Ettl, Sara Tolaney, Andrew Wardley, Stefania Zambelli, John F Hilton, Francesco Ricci, Seock-Ah Im, Sung-Bae Kim, Stephen Johnston, Arlene Chan, Shom Goel, Kristen Catron, Zhengyu Yang, Corona Gainford, Fabrice Andre