Abemaciclib in Combination With Endocrine Therapy for Patients With Hormone Receptor-Positive, HER2-Negative Metastatic Breast Cancer: A Phase 1b Study oleh Sara M. Tolaney, Muralidhar Beeram, J. Thaddeus Beck, Alison Conlin, E. Claire Dees, Shannon L. Puhalla, Brent N. Rexer, Howard A. Burris, Komal Jhaveri, Komal Jhaveri, Teresa Helsten, Carlos Becerra, Kevin Kalinsky, Kevin Kalinsky, Kathleen N. Moore, Kathleen N. Moore, Allison M. Manuel, Andrew Lithio, Gregory L. Price, Sonya C. Chapman, Lacey M. Litchfield, Matthew P. Goetz, Matthew P. Goetz