To evaluate the effect of idalopirdine (120 and 360 mg) on cardiac repolarisation in healthy men.

Inclusion Criteria:

• Body weight at least 50 kg and Body Mass index >18.5 and < 30 kg/m2
• Good general health ascertained by a detailed medical history, laboratory tests and physical examination
• Use of contraception.

Exclusion Criteria:

• The subject has evidence of cardiac conduction abnormalities as calculated by the ECG equipment and evaluated by the investigator, at the Screening Visit or at the Baseline visit
• The subject has a history of long QT syndrome, history of cardiac arrhythmia, or history of cardiac disease (eg, coronary artery disease, valvular disease, etc.).

Other protocol defined inclusion and exclusion criteria do apply