Journal of Psychiatry Spectrum (Jan 2025)

Comparative Efficacy of Antipsychotic Medication for Stereotypic Behavior in Autism Spectrum Disorder: A Systematic Review and Meta-analysis

  • Shivanand Kattimani,
  • Sandhiya Selvarajan,
  • Natarajan Varadharajan,
  • Prabhavaty Gopalakrishnan

DOI
https://doi.org/10.4103/jopsys.jopsys_22_24
Journal volume & issue
Vol. 4, no. 1
pp. 30 – 39

Abstract

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Background: Stereotypic movements in autism form core symptoms under the rubric of repetitive and restricted patterns of behavior. Aim: The systematic review was aimed to find which antipsychotic has better efficacy in treating stereotypic behavior in autism spectrum disorder. Methods: We searched for journal publications in the English from PubMed and Cochrane databases (CENTRAL), January 1992–June 2024, for randomized controlled trials that compared antipsychotics with a placebo of at least 6 weeks’ trial, with the outcome measure being a change in stereotypy score. Quality assessment of the included studies in the meta-analysis was done using Cochrane risk of bias tool version 2. We followed PRISMA guidelines for systematic review. The mean difference in change of stereotypy symptoms score was calculated between antipsychotic and placebo participants along with 95% confidence interval (CI) using the random-effects model. Results: 146 studies were screened, and 25 studies were deemed eligible to retrieve full-length articles for review. A total of nine studies were included in the systematic review that had used aripiprazole, risperidone, or lurasidone as an antipsychotic. Six studies (n = 726) that had all data on mean difference in stereotypy scores on the Aberrant Behavior Checklist (ABC)-Stereotypy subscale and four studies (n = 554) that reported stereotypy scores using Children’s Yale-Brown Obsessive Compulsive Scale (CY-BOCS)-Compulsions subscale were included in the meta-analysis. Antipsychotics showed a significant reduction in ABC-Stereotypy scores (−1.84 [−2.84, −0.85; 95% CI], Z = 3.83, P < 0.001) with moderate heterogeneity between the studies (I2 = 53%). Whereas, antipsychotics did not show significant improvement in compulsions as measured on CY-BOCS (−0.87 [−1.89, 0.16; 95% CI], Z = 1.65, P = 0.10). Conclusion: Stereotypy in autism is difficult to measure, and no uniform measure exists. Trials are limited to short duration and limited to few antipsychotics. Among antipsychotics, risperidone has robust efficacy in reducing stereotypic behaviors.

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