Experts discuss the necessity of ESR1 mutation testing when considering treatment with elacestrant in patients with estrogen receptor–positive (ER+)/HER2-negative (HER2–) metastatic breast cancer and discuss unmet needs in this patient population. They also describe options for mutation and resistance marker testing to guide treatment selection.
Erica L. Mayer, MD, MPH, discusses the role of elacestrant in the breast cancer treatment landscape and provides clinical insights on its safety profile.
Experts discuss how they determine whether a patient with metastatic breast cancer is a candidate for treatment with elacestrant based on FDA approved indication, NCCN guidelines, and the results of ESR1 mutation and resistance marker testing. Participants also discuss how they determine treatment failure or resistance.
Drs Mayer and Kalinsky provide insights and offer their impressions of the PADA-1 trial, focusing on ESR1 mutation monitoring with circulating tumor DNA (ctDNA).