title: A pilot study of D-cycloserine in subjects with autistic disorder.
abstract: OBJECTIVE
  The authors assessed the effects of D-cycloserine on the core symptom of social impairment in subjects with autism.
  
  
  METHODS
  Following a 2-week, single-blind placebo lead-in phase, drug-free subjects with autistic disorder were administered three different doses of D-cycloserine during each of three 2-week periods. Measures used for subject ratings included the Clinical Global Impression (CGI) scale and Aberrant Behavior Checklist.
  
  
  RESULTS
  Significant improvement was found on the CGI and social withdrawal subscale of the Aberrant Behavior Checklist. d-Cycloserine was well tolerated at most of the doses used in this study.
  
  
  CONCLUSIONS
  In this pilot study, D-cycloserine treatment resulted in significant improvement in social withdrawal. Further controlled studies of D-cycloserine in autism appear warranted.
authors.affiliation: Riley Hospital for Children, Room 4300, 702 Barnhill Drive, Indianapolis, IN 46220, USA.
authors.forename: David J
authors.initials: DJ
authors.lastname: Posey
authors.forename: Deborah L
authors.initials: DL
authors.lastname: Kem
authors.forename: Naomi B
authors.initials: NB
authors.lastname: Swiezy
authors.forename: Thayne L
authors.initials: TL
authors.lastname: Sweeten
authors.forename: Ryan E
authors.initials: RE
authors.lastname: Wiegand
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: McDougle
mesh_terms: D000293:Adolescent; D000328:Adult; D001321:Autistic Disorder / Q000188:drug therapy* / Q000523:psychology; D002648:Child; D002675:Child, Preschool; D003523:Cycloserine / Q000008:administration & dosage / Q000627:therapeutic use*; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D008297:Male; D010865:Pilot Projects; D010919:Placebos; D011446:Prospective Studies; D012920:Social Behavior Disorders / Q000188:drug therapy* / Q000523:psychology; D016896:Treatment Outcome
chemical_list: D010919:Placebos; D003523:Cycloserine