A Phase II Trial of Onapristone and Fulvestrant for Patients With ER+ and HER2- Metastatic Breast Cancer. - Kamaraju S; Fowler AM; Tarima S; Chaudhary LN; Burkard ME; Giever T; Cheng YC; Parkes A; Lange CA; Pipp-Dahm M; Hegeman R; Siddiqui N; et al. (Clinical breast cancer, 2025)