This is an interventional, multi-national, multi-site, open-label extension study in patients with mild to moderate AD who completed the 24-week lead-in study 14861A (NCT01955161) or 14862A (NCT02006641).
Patients received 28-weeks of open-label treatment with idalopirdine 60 mg/day (option to reduce to 30 mg/day) as adjunctive treatment to donepezil. Approximately 100 patients, who had completed the initial 28-week period (OLEX), were included in a 24 week open-label treatment period with memantine (OLEX-MEM) that evaluated the safety and tolerability of concomitant memantine therapy in patients who were already on a stable treatment with idalopirdine and donepezil and for whom memantine treatment was clinically indicated.
