Mitchell Dowsett, PhD, of the Royal Marsden Hospital discusses the EndoPredict test, which has improved performance compared with the widely used Oncotype Dx test (Abstract S3-01).
Sherene Loi, MD, of Peter MacCallum Cancer Centre, discusses a pooled individual patient data analysis of stromal tumor-infiltrating lymphocytes in primary triple-negative breast cancer treated with anthracycline-based chemotherapy (Abstract S1-03).
Clifford A. Hudis, MD, of Memorial Sloan Kettering Cancer Center, and Julia R. White, MD, of Ohio State University Comprehensive Cancer Center, discuss a meta-analysis on efficacy and safety of hypofractionated radiotherapy for the treatment of early-stage breast cancer (Abstract P3-12-15).
Andrew Seidman, MD, of Memorial Sloan Kettering Cancer Center, and Erica L. Mayer, MD, MPH, of the Dana-Farber Cancer Institute, discuss this phase 3 trial of palbociclib with adjuvant endocrine therapy vs endocrine therapy alone for HR-positive/HER2-negative early breast cancer. (Abstract OT1-03-21)
Sarat Chandarlapaty, MD, PhD, of the Memorial Sloan Kettering Cancer Center, discusses results from this study that showed patients with ER-positive metastatic breast cancer who had a D538G and/or a Y537S mutation in the ESR1 gene had significantly worse median overall survival (Abstract S2-07).
Patricia A. Ganz, MD, of the University of California at Los Angeles, discusses this clinical trial of anastrozole vs tamoxifen in postmenopausal women with ductal carcinoma in situ undergoing lumpectomy plus radiotherapy (Abstract S6-04).
