Analyzing direct and indirect genetic effects on early neurodevelopmental traits – a commentary on Hegemann et al.

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Main Authors: Yalan Li, Tianjiao Liu, Xin Li
Format: Artículo Open Access
Published: Wiley 2025
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author Yalan Li
Tianjiao Liu
Xin Li
author_facet Yalan Li
Tianjiao Liu
Xin Li
Yalan Li
Tianjiao Liu
Xin Li
collection Wiley Open Access
contents Analyzing direct and indirect genetic effects on early neurodevelopmental traits – a commentary on Hegemann et al. Yalan Li Tianjiao Liu Xin Li Journal of Child Psychology and Psychiatry The study by Hegemann et al. advances understanding of the genetic architecture underlying early neurodevelopmental traits by distinguishing direct and indirect genetic effects using Trio‐GCTA and polygenic score models. Findings reveal that indirect genetic effects are particularly pronounced for hyperactivity and restricted and repetitive behaviors, while direct effects dominate in language and motor development. Notably, associations between parental cognitive and educational attainment polygenic scores and child outcomes suggest potential protective genetic influences. However, several methodological considerations may affect interpretation. Excluding closely related individuals could limit the detection of extended familial effects, and reliance on polygenic scores derived from predominantly European GWAS may constrain generalizability. Furthermore, current PGS explain only a portion of trait heritability, possibly underrepresenting true genetic contributions. Future studies incorporating extended family structures, diverse populations, and alternative methods to model gene–environment interplay are essential for refining insights into early neurodevelopmental processes. 10.1111/jcpp.70070 http://onlinelibrary.wiley.com/termsAndConditions#vor
doi_str_mv 10.1111/jcpp.70070
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id wiley_oa_10_1111_jcpp_70070
institution Wiley Open Access
license_str_mv http://onlinelibrary.wiley.com/termsAndConditions#vor
publishDate 2025
publisher Wiley
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spellingShingle Analyzing direct and indirect genetic effects on early neurodevelopmental traits – a commentary on Hegemann et al.
Yalan Li
Tianjiao Liu
Xin Li
Journal of Child Psychology and Psychiatry
Analyzing direct and indirect genetic effects on early neurodevelopmental traits – a commentary on Hegemann et al. Yalan Li Tianjiao Liu Xin Li Journal of Child Psychology and Psychiatry The study by Hegemann et al. advances understanding of the genetic architecture underlying early neurodevelopmental traits by distinguishing direct and indirect genetic effects using Trio‐GCTA and polygenic score models. Findings reveal that indirect genetic effects are particularly pronounced for hyperactivity and restricted and repetitive behaviors, while direct effects dominate in language and motor development. Notably, associations between parental cognitive and educational attainment polygenic scores and child outcomes suggest potential protective genetic influences. However, several methodological considerations may affect interpretation. Excluding closely related individuals could limit the detection of extended familial effects, and reliance on polygenic scores derived from predominantly European GWAS may constrain generalizability. Furthermore, current PGS explain only a portion of trait heritability, possibly underrepresenting true genetic contributions. Future studies incorporating extended family structures, diverse populations, and alternative methods to model gene–environment interplay are essential for refining insights into early neurodevelopmental processes. 10.1111/jcpp.70070 http://onlinelibrary.wiley.com/termsAndConditions#vor
title Analyzing direct and indirect genetic effects on early neurodevelopmental traits – a commentary on Hegemann et al.
topic Journal of Child Psychology and Psychiatry
url https://acamh.onlinelibrary.wiley.com/doi/10.1111/jcpp.70070