29 ELEVATE: A Phase 1b/2, Open-Label, Umbrella Study Evaluating Elacestrant in Various Combinations in Patients (pts) With Estrogen Receptor–Positive (ER+), HER2-Negative (HER2–) Locally Advanced or Metastatic Breast Cancer (mBC)ByHope S. Rugo, MD,Aditya Bardia, MD, MPH, FASCO,Erika P. Hamilton, MD,Sara A. Hurvitz, MD,Sara M. Tolaney, MD, MPH,Virginia Kaklamani, MD, DSc,Paula Muñoz Romero,Shannon Matheny,Kathy Puyana Theall,Joyce A. O’ShaughnessyJuly 21st 2024