As monotherapy, imlunestrant demonstrated an 11.4-month numeric improvement in median OS versus endocrine therapy in patients with ESR1-mutated disease In all patients, the imlunestrant plus abemaciclib combination achieved a median PFS of 10.9 months, demonstrated a favorable OS trend, and extended time to chemotherapy by more than a year These data were published simultaneously in Annals of Oncology and will be presented today at the 2025 San Antonio Breast Cancer Symposium INDIANAPOLIS, Dec. 12, 2025 /PR ...