JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL
RESEARCH SUPPORT, NON-U.S. GOV'T
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A randomized clinical study of Lu AA21004 in the prevention of relapse in patients with major depressive disorder.

The efficacy and tolerability of Lu AA21004 in the prevention of relapse of major depressive disorder (MDD) in patients in remission after acute treatment was evaluated. Patients (n=639) aged 18-75 years with a primary diagnosis of MDD with a current major depressive episode (MDE) ≥4 weeks' duration, at least one prior MDE and a MADRS total score ≥26 received 12-week, open-label Lu AA21004 at 5 or 10mg/day. Patients in remission (MADRS ≤10) at both weeks 10 and 12 were assigned to double-blind treatment with either placebo or Lu AA21004 (fixed dose from Week 8).Patients (n=396) were treated, after random assignment to placebo (n=192) or Lu AA21004 (n=204). The primary analysis of time to relapse (full-analysis set, Cox proportional hazard model) showed a statistically significant difference in favour of Lu AA21004 versus placebo with a hazard ratio of 2.01 (95% confidence interval: 1.26-3.21; p=0.0035). The proportion of patients who relapsed was 13% in the Lu AA21004 group (n=27) and 26% in the placebo group (n=50). The withdrawal rates due to adverse events were 8% (open-label), and 3% (placebo) and 8% (Lu AA21004) (double-blind). Thus, Lu AA21004 was effective in preventing relapse of MDD and was well tolerated as maintenance treatment.

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