Hormone Receptor Positive endometrIal Carcinoma Treated by Dual mTORC1/mTORC2 Inhibitor and Anastrozole (VICTORIA)

The investigators hypothesize that the dual inhibition of mTORC1/mTORC2 by AZD2014 combined with inhibition of aromatase enzyme by anastrozole will act synergistically and may be an interesting therapeutic option for endometrial cancer with a manageable toxicity profile. The investigators proposal is to conduct a multicenter, 2-step, randomized, Phase I/II trial to evaluate the safety and efficacy of a combination treatment associating anastrozole to AZD2014 in advanced endometrial cancer patients. The study is divided in 2 steps : * A safety run-in phase aiming to evaluate the safety of the proposed combination AZD2014 + anastrozole (Arm A) versus anastrozole alone (Arm B). No dose escalation is scheduled (doses are based on maximum tolerated dose (MTD) defined for AZD2014 and the summary of product characteristics (SPC) of anastrozole). However, dose de-escalation for AZD2014 will be applied in case of toxicity. * A two-stage randomized Phase II part aiming to evaluate the clinical benefit of the AZD2014 + anastrozole (Arm A) combination therapy versus anastrozole (Arm B).