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  • Title: A randomized, double-blind, duloxetine-referenced study comparing efficacy and tolerability of 2 fixed doses of vortioxetine in the acute treatment of adults with MDD.
    Author: Mahableshwarkar AR, Jacobsen PL, Chen Y, Serenko M, Trivedi MH.
    Journal: Psychopharmacology (Berl); 2015 Jun; 232(12):2061-70. PubMed ID: 25575488.
    Abstract:
    RATIONALE: Vortioxetine has reduced depressive symptoms in adults with major depressive disorder (MDD) in multiple clinical trials. OBJECTIVES: The aim of this study is to evaluate the efficacy, safety, and tolerability of vortioxetine 15 and 20 mg vs placebo in adults with MDD. METHODS: Patients were randomized 1:1:1:1 to vortioxetine 15 mg, vortioxetine 20 mg, duloxetine 60 mg (active reference), or placebo. The primary efficacy endpoint was mean change in Montgomery-Åsberg Depression Rating Scale (MADRS) total score at week 8 (MMRM). Safety/tolerability assessments included physical examinations, vital signs, laboratory evaluations, electrocardiograms, adverse events (AEs), Columbia-Suicide Severity Rating Scale, Arizona Sexual Experiences Scale, and Discontinuation-Emergent Signs and Symptoms checklist. RESULTS: Six hundred and fourteen patients were randomized. Mean changes in MADRS scores were -12.83 (±0.834), -14.30 (±0.890), -15.57 (±0.880), and -16.90 (±0.884) for placebo, vortioxetine 15 mg (P = .224), vortioxetine 20 mg (P = .023), and duloxetine 60 mg (P < .001) (P vs placebo), respectively. AEs reported by ≥5 % of vortioxetine patients included nausea, headache, diarrhea, dizziness, dry mouth, constipation, vomiting, insomnia, fatigue, and upper respiratory infection. Treatment-emergent sexual dysfunction, suicidal ideation or behavior, and discontinuation symptoms were not significantly different between vortioxetine and placebo. CONCLUSIONS: Vortioxetine 20 mg significantly reduced MADRS total scores after 8 weeks of treatment. Both vortioxetine doses were well tolerated. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov identifier NCT01153009; www.clinicaltrials.gov/ .
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