Randomised Placebo-controlled Venlafaxine-referenced Study of Efficacy and Safety of 5 and 10 mg of Vortioxetine (Lu AA21004) in Acute Treatment of Major Depressive Disorder in Adults

Double-blind, Randomised, Placebo-controlled Study Comparing the Efficacy and Safety of Two Fixed Dosages of a Novel Antidepressant Compound to That of Placebo in Patients With Major Depressive Disorder

The purpose of this Venlafaxine-referenced study is to evaluate the efficacy, safety and tolerability of two fixed doses of Vortioxetine in the acute treatment of Major Depressive Disorder (MDD).

Inclusion Criteria:

• MDE as primary diagnosis according to DSM-IV-TR criteria (classification code 296.xx)
• Current MDE duration of at least 3 months and less than 12 months
• The patient has a MADRS total score >=30

Exclusion Criteria:

• Any current psychiatric disorder other than MDD as defined in the DSM-IV TR
• Any substance disorder within the previous 6 months
• Female patients of childbearing potential who are not using effective contraception
• Use of any psychoactive medication 2 weeks prior to screening and during the study

Other protocol-defined inclusion and exclusion criteria may apply.