Abstract
BackgroundThe association between mood disorders in parents and autism spectrum disorder (ASD) risk in offspring has been investigated in several studies, but the evidence is inconclusive. This systematic review and meta-analysis will explore whether an association exists between parental mood disorders and ASD risk in offspring. MethodsA literature search was performed using the electronic databases PubMed, EMBASE, PsycINFO, and Scopus. We also reviewed reference lists from retrieved articles. Meta-analysis was conducted, and combined effect values and their 95% confidence intervals were calculated. Study-specific risk ratios (RRs) were pooled using a random effect model. The risk of publication bias was assessed by funnel plot and Egger's regression asymmetry test. ResultsNine observational studies (two cohort and seven case-control studies) were included for analysis. Our meta-analysis found a greater risk of ASD in children exposed to parental affective, depressive, and bipolar disorders [(RRs 1.65 (95%CI 1.45–1.88); 1.37 (95%CI 1.04–1.81) and 1.87; 95%CI 1.69–2.07) respectively]. We also found increased ASD risk in children of mothers who experienced affective and depressive disorders [(RRs 1.67 (95%CI 1.34–2.09) and 1.62 (95%CI 1.32–1.99) respectively]. We found no increased risk of ASD in children exposed to paternal affective and depressive disorders. Subgroup and sensitivity analysis confirmed the robustness of our main analysis. ConclusionThe evidence from the present study suggests parental affective, depressive and bipolar, as well as maternal affective and depressive disorders increased the risk of ASD in offspring. Exposure to affective and depressive disorders in fathers only was not linked with ASD risk in children.
Published Version
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