Although many studies indicate the interplay of genetic and environmental factors in the etiology of autism spectrum disorder (ASD), our limited understanding of the underlying mechanisms hampers the development of effective ways of detecting and preventing the disorder. Recent studies support the hypothesis that prenatal androgen exposure contributes to the development of ASD. This would suggest that maternal polycystic ovary syndrome (PCOS), a condition associated with excess androgens, would increase the risk of ASD in the offspring. We conducted a matched case-control study nested within the total population of Sweden (children aged 4-17 who were born in Sweden from 1984 to 2007). The sample consisted of 23 748 ASD cases and 208 796 controls, matched by birth month and year, sex and region of birth. PCOS and ASD were defined from ICD codes through linkage to health-care registers. Maternal PCOS increased the odds of ASD in the offspring by 59%, after adjustment for confounders (odds ratio (OR) 1.59, 95% confidence interval (CI) 1.34-1.88). The odds of offspring ASD were further increased among mothers with both PCOS and obesity, a condition common to PCOS that is related to more severe hyperandrogenemia (OR 2.13, 95% CI 1.46-3.10). Risk estimates did not differ between sexes. In conclusion, children of women with PCOS appear to have a higher risk of developing ASD. This finding awaits confirmation, and exploration of potentially underlying mechanisms, including the role of sex steroids in the etiology of ASD.
Maternal polycystic ovary syndrome and the risk of autism spectrum disorders in the offspring: a population-based nationwide study in Sweden
Creators
K. Kosidou - Stockholm County Council
C. Dalman - Stockholm County Council
L. Widman - Stockholm County Council
S. Arver - Karolinska Institute
B. K. Lee - Drexel University
C. Magnusson - Stockholm County Council
R. M. Gardner - Stockholm Centre of Public Health
Publication Details
Molecular psychiatry, v 21(10), pp 1441-1448
Publisher
Springer Nature
Number of pages
8
Grant note
Swedish Regional agreement on medical training and clinical research
Stiftelsen Sunnerdahls Handikappfond Foundation
2012-2264; 523-2010-1052 / Swedish Research Council; European Commission
2007008 / Stockholm County Council
7618 / Autism Speaks
Swedish Regional agreement on medical training and clinical research (ALF)
2007-2064 / Swedish Council for Working Life and Social Research; Swedish Research Council; Swedish Research Council for Health Working Life & Welfare (Forte)
Resource Type
Journal article
Language
English
Academic Unit
Epidemiology and Biostatistics
Web of Science ID
WOS:000384127000015
Scopus ID
2-s2.0-84949256009
Other Identifier
991019168700204721
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