Epigenome-wide association study of loneliness in a sample of U.S. middle-aged twins

Autor: Christopher R. Beam, Kelly M. Bakulski, Ebrahim Zandi, Eric Turkheimer, Morgan Lynch, Alaina I. Gold, Thalida Em Arpawong, Sophie A. Bell, Alyssa C. Kam, Jonathan Becker, Deborah Winders Davis
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Epigenetics, Vol 19, Iss 1 (2024)
Druh dokumentu: article
ISSN: 15592294
1559-2308
1559-2294
DOI: 10.1080/15592294.2024.2427999
Popis: Loneliness is a complex human trait that is highly polygenic and found to affect gene expression related to inflammatory and immunological functioning. To date, no epigenome-wide association studies of loneliness have tested whether differentially methylated sites are annotated to genes associated with inflammatory and immunological processes. Using 281 individual adult twins’ DNA methylation data from the Louisville Twin Study, we performed an epigenome-wide analysis of loneliness to address this gap in the literature. In the discovery analysis, 169 twins were used to prioritize probes and test associations with DNA methylation age acceleration, and 56 independent monozygotic (MZ) twin pairs (112 individuals) were used in a within-family replication analysis. Among the 837,274 sites analyzed, no probe sites were statistically significant at the genome-wide level (p
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