12 TIP HARMONIA SOLTI-2101/ AFT-58: A Head-to-Head Phase III Study Comparing Ribociclib (RIB) and Palbociclib (PAL) in Patients (pts) With Hormone Receptor– Positive/HER2-Negative/HER2- Enriched (HR+/HER2−/HER2-E) Advanced Breast Cancer (ABC)ByLisa A. Carey, MD,Tomas Pascual,Daniel Stover,Astrid Thuerigen,Charles Perou,Eva Ciruelos,Ana Casas,Patty Spears,Estelle Roux,Faye Su,Hullin Hu,Yen-Shen Lu,Sara M. Tolaney, MD, MPH,Ann H. Partridge, MD, MPH,Guillermo Villacampa,Juan Manuel Ferrero-Cafiero,Aleix PratApril 28th 2023