Population- and individual-specific regulatory variation in Sardinia.
Nat Genet
; 49(5): 700-707, 2017 May.
Article
en En
| MEDLINE
| ID: mdl-28394350
ABSTRACT
Genetic studies of complex traits have mainly identified associations with noncoding variants. To further determine the contribution of regulatory variation, we combined whole-genome and transcriptome data for 624 individuals from Sardinia to identify common and rare variants that influence gene expression and splicing. We identified 21,183 expression quantitative trait loci (eQTLs) and 6,768 splicing quantitative trait loci (sQTLs), including 619 new QTLs. We identified high-frequency QTLs and found evidence of selection near genes involved in malarial resistance and increased multiple sclerosis risk, reflecting the epidemiological history of Sardinia. Using family relationships, we identified 809 segregating expression outliers (median z score of 2.97), averaging 13.3 genes per individual. Outlier genes were enriched for proximal rare variants, providing a new approach to study large-effect regulatory variants and their relevance to traits. Our results provide insight into the effects of regulatory variants and their relationship to population history and individual genetic risk.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Variación Genética
/
Perfilación de la Expresión Génica
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Sitios de Carácter Cuantitativo
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Estudio de Asociación del Genoma Completo
Tipo de estudio:
Prognostic_studies
Límite:
Female
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Humans
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Male
País como asunto:
Europa
Idioma:
En
Año:
2017
Tipo del documento:
Article