Abstract
Efficacy and safety of 2 risperidone doses were evaluated in children and adolescents with autism. Patients (N = 96; 5–17 years), received risperidone (low-dose: 0.125 mg/day [20 to <45 kg], 0.175 mg/day [>45 kg] or high-dose: 1.25 mg/day [20 to <45 kg], 1.75 mg/day [>45 kg]) or placebo. Mean baseline (range 27–29) to endpoint change in Aberrant Behavior Checklist-Irritability (primary endpoint) was significantly greater in the high-dose—(−12.4 [6.5]; p < 0.001), but not low-dose (−7.4 [8.1]; p = 0.164) group, versus placebo (−3.5 [10.7]). Clinical Global Impressions-Severity and Children’s Yale-Brown Obsessive Compulsive Scale scores improved significantly only in the high-dose group, consistent with ABC-I results. Somnolence, sedation and increased appetite occurred more frequently in high-versus low-dose groups. Overall, increased appetite occurred most frequently.
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Acknowledgments
This study was funded by Johnson & Johnson Pharmaceutical Research & Development, LLC. Dr. Ananya Chikramane (SIRO Clinpharm Pvt. Ltd.) provided writing assistance and Dr. Wendy P. Battisti (Janssen Research & Development, LLC) provided additional editorial support for this manuscript. We thank Dr. Joseph Palumbo (Janssen Research & Development, LLC) for his contributions to study design and review of the manuscript, Dr. Vivek Kusamakar, in memoriam, for his significant contributions to the study, and Ms. Andrea Davis (Janssen Research & Development, LLC), the clinical trial manager for the study. The authors also thank the study participants, without whom this study would never have been accomplished and the following investigators for their participation in this study: United States: Attalla, Ashraf, M.D.; Baber, Riaz, M.D.; Bregman, Joel, M.D.; Chueh, Daniel, M.D.; Djukic, Aleksandra, M.D.; Ginsberg, Lawrence, M.D.; Greenhill, Laurence, M.D.; Hagerman, Randi, M.D.; Handal, Nelson, M.D.; Holloway, Willis, M.D.; Kolevzon, Alexander, M.D.; Lerman, Mark, M.D.; Malone, Richard P., M.D.; Marsella, Gregory, M.D.; Melmed, Raun, M.D.; Padilla, Americo, M.D.; Quintana, Humberto, M.D.; Robb, Adelaide S., M.D; Schexnayder, Donald, M.D.; Yadalam, Kashinath, M.D.
Conflict of Interest
Dr. Aman was an investigator for this study and has received research support or been a consultant for Janssen Research & Development, LLC, Bristol-Myers Squibb, Pfizer, Forest Research, and Hoffman La Roche. Drs. Ness, Singh, Hough and Kent and Mr. Karcher are employees of Janssen Research & Development, LLC. Drs. Ning and Kushner were employed by Janssen Research & Development, LLC during the design and conduct of this study. Dr. Ning is currently employed by Purdue Pharma and Dr. Kushner is at CFG Health Systems, L.L.C. All authors met ICMJE criteria and all those who fulfilled those criteria are listed as authors.
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Registration: This phase-4 study is registered at ClinicalTrials.gov (NCT00576732).
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Kent, J.M., Kushner, S., Ning, X. et al. Risperidone Dosing in Children and Adolescents with Autistic Disorder: A Double-Blind, Placebo-Controlled Study. J Autism Dev Disord 43, 1773–1783 (2013). https://doi.org/10.1007/s10803-012-1723-5
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DOI: https://doi.org/10.1007/s10803-012-1723-5