Efficacy of everolimus and letrozole with or without ribociclib in recurrent endometrial cancer: a phase 2 randomized clinical trial - Jeffrey A. How; Shannon N. Westin; Melissa Pham; Barrett Lawson; Minxing Chen; Nidhi Tandon; Ying Yuan; Rugang Zhang; Amir A. Jazaeri; Anil K. Sood; Michaela Onstad Grinsfelder; Kathleen M. Schmeler; et al. (Nature Communications, 2026)