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Onapristone, a progesterone receptor antagonist, as first-line therapy in primary breast cancer

First-line TherapyProgesterone Receptor AntagonistBreast OncologyMedicinePharmacologyGynecologyPrimary Breast CancerBreast CancerPharmacotherapyAnti-cancer AgentCancer TreatmentOncologyCancer ResearchEndocrine-related Cancer