26 Subgroup Analysis of Patients With No Prior Chemotherapy in EMERALD: A Phase 3 Trial Evaluating Elacestrant, an Oral Selective Estrogen Receptor Degrader (SERD), Vs Investigator’s Choice of Endocrine Monotherapy for ER+/HER2– Advanced/ Metastatic Breast Cancer (mBC)ByVirginia Kaklamani, MD, DSc,Aditya Bardia, MD, MPH, FASCO,Phillippe Aftimos,Javier Cortes,Patrick Neven, MD, PhD,Alberto J. Montero, MD, MBA, CPHQ,Joo Hyuk Sohn,Giulia Tonini,Krzysztof J. Grzegorzewski,François-Clément BidardApril 27th 2023