Phase 1/2 Study of Amcenestrant (SAR439859) Single Agent and in Combination With Other Anti-cancer Therapies in Postmenopausal Women With Estrogen Receptor Positive Advanced Breast Cancer

Summary

Primary Objectives: Dose Escalation: * To assess the incidence rate of dose-limiting toxicity (DLT) and to determine the maximum tolerated dose (MTD) as well as the recommended dose (RD) of amcenestrant administered as monotherapy and in combination with palbociclib * To assess the incidence rate of DLT and determine the RD of everolimus or abemaciclib in combination with the selected amcenestrant dose for the combination therapy Safety Run-In: \- To confirm the RD of amcenestrant in combination with alpelisib Dose Expansion: * Antitumor activity using objective response rate (ORR) * Overall safety profile of amcenestrant administered in combination with palbociclib, alpelisib, everolimus, and abemaciclib Secondary Objectives: * Overall safety profile of amcenestrant monotherapy and in combination * Pharmacokinetic (PK) profile of amcenestrant administered as monotherapy or in combination and PK profile of palbociclib, alpelisib, everolimus and abemaciclib * Antitumor activity using ORR, the clinical benefit rate (CBR) and progression free survival (PFS) * Time to first tumor response * Residual ER availability with positron emission tomography (PET) scan \[(18)F\] fluoroestradiol (18F-FES) uptake with increasing doses of amcenestrant * Food effect on PK of amcenestrant * Potential induction/inhibition effect of amcenestrant on cytochrome P450 (CYP) 3A using 4b-OH cholesterol

Timeline

Start

2017-09-20

Primary completion

2024-11-08

Completion

2024-11-08

Publications

• Bardia A, Chandarlapaty S, Linden HM, Ulaner GA, Gosselin A, Cartot-Cotton S, Cohen P, Doroumian S, Paux G, Celanovic M, Pelekanou V, Ming JE, Ternes N, Bouaboula M, Lee JS, Bauchet AL, Campone M. AMEERA-1 phase 1/2 study of amcenestrant, SAR439859, in postmenopausal women with ER-positive/HER2-negative advanced breast cancer. Nat Commun. 2022 Jul 15;13(1):4116. doi: 10.1038/s41467-022-31668-8.

Drugs

Indications