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Molecular Autism
Published in: Molecular Autism 1/2010

Open Access 01-12-2010 | Research

Paternal age increases the risk for autism in an Iranian population sample

Authors: Roksana Sasanfar, Stephen A Haddad, Ala Tolouei, Majid Ghadami, Dongmei Yu, Susan L Santangelo

Published in: Molecular Autism | Issue 1/2010

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Abstract

Background

Autism is a neurodevelopmental disorder which is known to have a strong genetic component and is most likely oligogenic. However, the necessary role of environmental factors has been well documented. Prior research suggests that parental characteristics, such as age and level of education, may be associated with a risk of autism. Parental age has been shown to be associated with many disorders, such as schizophrenia, childhood cancer and fetal death. However, results from studies of parental age and autism are inconsistent.

Methods

In the present study, we investigated the association of autism with parental age in 179 autism cases and 1611 matched cohort children from Iran. Each case was matched with nine cohort controls on parental education, sex, order of birth, consanguineous marriage, urbanism and province of residence. The Cox regression model was used to carry out conditional logistic regression on the matched data.

Results

There was a significant association between higher paternal age, but not maternal age, and an increasing risk of autism. An analysis of the combined effect of parental age and education also revealed that parents with higher education had an increased risk of having autistic children, with a dose-response effect of parental age.

Conclusions

This study, which is the first epidemiological study of autism in Iran, provides evidence of the association of paternal age and risk of autism.
Appendix
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Metadata
Title
Paternal age increases the risk for autism in an Iranian population sample
Authors
Roksana Sasanfar
Stephen A Haddad
Ala Tolouei
Majid Ghadami
Dongmei Yu
Susan L Santangelo
Publication date
01-12-2010
Publisher
BioMed Central
Published in
Molecular Autism / Issue 1/2010
Electronic ISSN: 2040-2392
DOI
https://doi.org/10.1186/2040-2392-1-2

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