The Association of ERBB2-Low Expression With the Efficacy of Cyclin-Dependent Kinase 4/6 Inhibitor in Hormone Receptor–Positive, ERBB2-Negative Metastatic Breast Cancer

JOURNAL ARTICLE published 5 November 2021 in JAMA Network Open

Authors: Kelvin K. H. Bao | Leone Sutanto | Shirley S. W. Tse | Ka Man Cheung | Jeffrey C. H. Chan