Meredith M. Regan, ScD, on Early Breast Cancer: Updated Results From the TEXT and SOFT Trials
2021 San Antonio Breast Cancer Symposium
Meredith M. Regan, ScD, of Dana-Farber Cancer Institute, discusses findings that point to the potential benefits of using adjuvant exemestane plus ovarian function suppression (OFS) to treat premenopausal women with hormone receptor–positive early breast cancer. This conclusion came after 13 years of median follow-up on the TEXT and SOFT trials, during which this regimen was compared with tamoxifen and OFS (Abstract GS2-05).
Lisa A. Carey, MD, of the University of North Carolina at Chapel Hill and the Lineberger Comprehensive Cancer Center, discusses findings from a pooled analysis of the MONALEESA-2, -3, and -7 trials. Among the findings was a consistent overall survival benefit with ribociclib plus endocrine therapy for patients with luminal A, luminal B, and HER2E breast cancer subtypes. Patients with the basal-like subtype did not derive a benefit from ribociclib, but the sample size was small (Abstract GS1-04).
Sara A. Hurvitz, MD, of the University of California, Los Angeles Jonsson Comprehensive Cancer Center, discusses phase III findings from the DESTINY-Breast03 trial, which compared ado-trastuzumab deruxtecan (T-DXd) with standard-of-care trastuzumab emtansine (T-DM1) in patients with HER2-positive metastatic breast cancer. T-DXd showed superior progression-free survival across subgroups of patients previously treated with trastuzumab and a taxane, including those with brain metastases (Abstract GS3-01).
Elizabeth A. Mittendorf, MD, PhD, of Dana-Farber Brigham and Women’s Cancer Center, discusses the progress made in recent years treating patients with triple-negative breast cancer (TNBC), including approval of the immunotherapy agents pembrolizumab and sacituzumab govitecan-hziy, a new standard of care in the preoperative setting for early-stage disease, as well as a better understanding of the biology of TNBC and its heterogeneity.
Ann H. Partridge, MD, MPH, of Dana-Farber Cancer Institute, discusses what she considers to be the most notable presentations at the 2021 San Antonio Breast Cancer Symposium. They include the focus on early-stage disease, especially in the TEXT/SOFT, RxPonder, and KEYNOTE-522 trials, as well as abstracts from the Early Breast Cancer Trialists’ Collaborative Group; and new data and novel therapeutics in the advanced setting.
Michael Gnant, MD, of the Medical University of Vienna, discusses phase III findings from the PALLAS study, which showed that adding 2 years of palbociclib to ongoing adjuvant endocrine therapy did not improve survival for patients with stage II to III hormone receptor–positive, HER2-negative early breast cancer. Dr. Gnant also talks about whether any correlative studies hint at patient subgroups that this regimen may benefit (Abstract GS1-07) .