A trial of D-cycloserine to treat stereotypies in older adolescents and young adults with autism spectrum disorder.

Abstract:

OBJECTIVES:Autism spectrum disorders (ASDs) have core impairments in social communication as well as the presence of repetitive, stereotypic behaviors and restricted interests. Older adolescents and young adults are particularly impacted by these deficits. Preclinical data implicate glutamatergic dysfunction in the pathophysiology of ASDs. D-Cycloserine (DCS), a partial glycineB agonist at the N-methyl-D-aspartic acid receptor site, has been shown to improve sociability in mouse models and a small human study. The sensitivity of the obligatory glycineB co-agonist binding site may change with daily administration of DCS as a result of agonist-induced desensitization. The efficacy of a "pulsed" once-weekly administration versus "daily" administration of DCS was compared. METHODS:Males and females, ages 14 to 25 years, with a Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition Text Revision diagnosis of an ASD were enrolled in a double-blind, randomized 10-week trial consisting of 8 weeks of active drug with either weekly or daily administration of 50 mg of DCS followed by a 2-week follow-up visit. RESULTS:For the purposes of this study, no statistical or clinical differences existed between the 2 dosage groups on the Aberrant Behavior Checklist subscale 3, which measures stereotypies/repetitive movements. When combining groups, a statistically significant decrease of 37% was found from baseline to week 8 when study drug was completed using a linear mixed effects model (P = 0.003). CONCLUSIONS:D-Cycloserine was shown to be effective in improving stereotypic symptoms in older adolescents and young adults with ASDs measured by the Aberrant Behavior Checklist subscale 3. In addition, DCS was safe and well tolerated.

journal_name

Clin Neuropharmacol

authors

Urbano M,Okwara L,Manser P,Hartmann K,Herndon A,Deutsch SI

doi

10.1097/WNF.0000000000000033

subject

Has Abstract

pub_date

2014-05-01 00:00:00

pages

69-72

issue

3

eissn

0362-5664

issn

1537-162X

pii

00002826-201405000-00001

journal_volume

37

pub_type

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