RecruitingPhase 3Drug trialRandomized Phase III Trial Testing Maintenance Olaparib Versus Observation After Adjuvant Chemoradiation for p53abn Endometrial CancerThe RAINBO program is a studies group which proposes personalized treatment of patients suffering from endometrial cancer according to their molecular profile. the RAINBO-RED study allows observation or maintenance treatment with targeted therapy for one year (olaparib). This after standard therapy. The goal is to improve recurrence-free survival of patients treated with Olaparib.