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Study: SSRI use during pregnancy associated with autism and developmental delays in boys
Date:4/15/2014

In a study of nearly 1,000 mother-child pairs, researchers from the Bloomberg School of Public health found that prenatal exposure to selective serotonin reuptake inhibitors (SSRIs), a frequently prescribed treatment for depression, anxiety and other disorders, was associated with autism spectrum disorder (ASD) and developmental delays (DD) in boys. The study, published in the online edition of Pediatrics, analyzed data from large samples of ASD and DD cases, and population-based controls, where a uniform protocol was implemented to confirm ASD and DD diagnoses by trained clinicians using validated standardized instruments.

The study included 966 mother-child pairs from the Childhood Autism Risks from Genetics and the Environment (CHARGE) Study, a population-based case-control study based at the University of California at Davis' MIND Institute. The researchers broke the data into three groups: Those diagnosed with autism spectrum disorder (ASD), those with developmental delays (DD) and those with typical development (TD). The children ranged in ages two to five. A majority of the children were boys 82.5% in the ASD group were boys, 65.6% in the DD group were boys and 85.6% in the TD were boys. " While the study included girls, the substantially stronger effect in boys alone suggests possible gender difference in the effect of prenatal SSRI exposure.

"We found prenatal SSRI exposure was nearly 3 times as likely in boys with ASD relative to typical development, with the greatest risk when exposure took place during the first trimester," said Li-Ching Lee, Ph.D., Sc.M., psychiatric epidemiologist in the Bloomberg School's Department of Epidemiology. "SSRI was also elevated among boys with DD, with the strongest exposure effect in the third trimester."

The data analysis was completed by Rebecca Harrington, Ph.D., M.P.H, in conjunction with her doctoral dissertation at the Bloomberg School. Dr. Lee was one of her advisors.

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Contact: Susan Sperry
ssperry1@jhu.edu
410-955-6919
Johns Hopkins University Bloomberg School of Public Health
Source:Eurekalert

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