Pervasive Developmental Disorders (PDDs) are serious developmental conditions affecting 6 per 1000 school-age children. We propose a multisite study in which 120 children with PDDs accompanied by highly irritable behavior will be randomly assigned to risperidone only (N=40) or risperidone plus a structured behavior therapy program (N=80) and compared on adaptive and behavioral outcomes after 16 weeks. After an additional eight weeks of stabilization (6 months total), children who show a positive response to the combination of risperidone and behavior therapy (estimated samples size of 60) will be randomized to continued treatment with risperidone or gradual discontinuation. The goal of the discontinuation phase is to examine whether the addition of behavior therapy permits discontinuation of risperidone without relapse. PDD can be a profound disability across social, emotional, and academic domains. Thus, there is a pressing need for new treatments in PDD that are safe and effective. In a previous RUPP Autism Network study, we showed that risperidone was safe and effective for children and adolescents with autism accompanied by tantrums, aggression, and/or self-injury. We also showed that the behavioral symptoms rapidly returned in a high percentage of these pediatric patients when the medication was withdrawn in a placebo-controlled discontinuation study. The present study will extend these findings and will test whether risperidone plus behavior therapy will enhance adaptive functioning in children with PDDs and protect against relapse. Side effects and therapeutic response will be carefully monitored. Subjects will be genotyped in order to evaluate the relationship of specific serotonin receptor genotypes and treatment response. The proposed study will be conducted by a multisite network that has already shown the capacity to collaborate in the design and conduct of clinical trials in the PDD population. Furthermore, this five-site network has established reliability on several measures relevant to the multi-site clinical trials in children with PDD. O.S.U. also plans two pilot studies: (a) a randomized clinical trial in 60 children with PDDs and severe ADHD behavior and (b) a study of ziprasidone in 30 children and adolescents with PDDs and highly irritable behaviors.

Agency
National Institute of Health (NIH)
Institute
National Institute of Mental Health (NIMH)
Type
Cooperative Clinical Research--Cooperative Agreements (U10)
Project #
5U10MH066768-04
Application #
6945665
Study Section
Special Emphasis Panel (ZMH1-CRB-J (03))
Program Officer
James, Regina Smith
Project Start
2002-09-01
Project End
2007-07-31
Budget Start
2005-08-01
Budget End
2006-07-31
Support Year
4
Fiscal Year
2005
Total Cost
$485,117
Indirect Cost
Name
Ohio State University
Department
Psychiatry
Type
Schools of Medicine
DUNS #
832127323
City
Columbus
State
OH
Country
United States
Zip Code
43210
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