A Randomized, Double-Blind, Placebo-Controlled Trial of Vilazodone in Children and Adolescents with Major Depressive Disorder with Twenty-Six-Week Open-Label Follow-Up

Robert L. Findling, Emily McCusker, Jeffrey R. Strawn

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To evaluate the efficacy and long-term safety of vilazodone in children and adolescent outpatients with major depressive disorder (MDD). Methods: Children and adolescents aged 7-17 years of age with MDD were randomized 2:2:1 to 8 weeks of double-blind placebo, vilazodone 15 or 30 mg/day or fluoxetine 20 mg/day, respectively. The primary and secondary efficacy outcomes, respectively, were change from baseline to week 8 in Children's Depression Rating Scale-Revised (CDRS-R) score total score and Clinical Global Impressions-Severity (CGI-S) score analyzed using a mixed model for repeated measurement approach. Patients who completed the 8-week randomized controlled trial (RCT), as well as new (de novo) patients, could participate in a 26-week, vilazodone-only, open-label extension (OLE) study. Results: The RCT enrolled 473 patients (60% female) with an average age of 13 years. Change in CDRS-R and CGI-S scores from baseline to week 8 did not differ between patients who received vilazodone and those randomized to placebo. The least-squares mean change from baseline in CDRS-R scores was similar for vilazodone and placebo (-20.7 vs.-20.3, p = 0.77; least-squares mean difference [LSMD] =-0.40). For fluoxetine, the LSMD versus placebo was-2.3 (p = 0.14). The OLE enrolled 330 patients (60% female) with an average age of 13-14 years. Overall, no new safety concerns were identified compared to what is known in adults. Conclusions: Similar improvements in depressive symptoms were observed in all arms. This study does not support the efficacy of vilazodone 15 or 30 mg/day for pediatric patients with MDD. No new or unexpected safety concerns were detected during the RCT or OLE studies.

Original languageEnglish (US)
Pages (from-to)355-365
Number of pages11
JournalJournal of child and adolescent psychopharmacology
Volume30
Issue number6
DOIs
StatePublished - Jul 2020

Keywords

  • adolescents
  • children
  • clinical trial
  • major depressive disorder
  • treatment efficacy
  • vilazodone

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Psychiatry and Mental health
  • Pharmacology (medical)

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