Quantifying the contribution of Neanderthal introgression to the heritability of complex traits.

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ID: 268980
2021
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Abstract
Eurasians have ~2% Neanderthal ancestry, but we lack a comprehensive understanding of the genome-wide influence of Neanderthal introgression on modern human diseases and traits. Here, we quantify the contribution of introgressed alleles to the heritability of more than 400 diverse traits. We show that genomic regions in which detectable Neanderthal ancestry remains are depleted of heritability for all traits considered, except those related to skin and hair. Introgressed variants themselves are also depleted for contributions to the heritability of most traits. However, introgressed variants shared across multiple Neanderthal populations are enriched for heritability and have consistent directions of effect on several traits with potential relevance to human adaptation to non-African environments, including hair and skin traits, autoimmunity, chronotype, bone density, lung capacity, and menopause age. Integrating our results, we propose a model in which selection against introgressed functional variation was the dominant trend (especially for cognitive traits); however, for a few traits, introgressed variants provided beneficial variation via uni-directional (e.g., lightening skin color) or bi-directional (e.g., modulating immune response) effects.
Reference Key
mcarthur2021quantifyingnature Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors McArthur, Evonne;Rinker, David C;Capra, John A;
Journal Nature communications
Year 2021
DOI
10.1038/s41467-021-24582-y
URL
Keywords
oxidative stress insomnia 8-hydroxy-2’-deoxyguanosine perimenopause postmenopause

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