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DNA methylation in peripheral tissues and left-handedness

  • BIOS Consortium
  • , Management Team
  • , Cohort collection
  • , Data Generation
  • , Data management and computational infrastructure
  • , Data Analysis Group
  • Vrije Universiteit Amsterdam
  • Amsterdam UMC
  • University of Bristol
  • Avera Institute for Human Genetics
  • University of Queensland
  • Queensland Institute of Medical Research
  • Leiden University
  • Erasmus University Rotterdam
  • VU University Medical Center
  • University of Groningen
  • Maastricht University
  • Utrecht University
  • SURFsara

Research output: Contribution to journalArticlepeer-review

Abstract

Handedness has low heritability and epigenetic mechanisms have been proposed as an etiological mechanism. To examine this hypothesis, we performed an epigenome-wide association study of left-handedness. In a meta-analysis of 3914 adults of whole-blood DNA methylation, we observed that CpG sites located in proximity of handedness-associated genetic variants were more strongly associated with left-handedness than other CpG sites (P = 0.04), but did not identify any differentially methylated positions. In longitudinal analyses of DNA methylation in peripheral blood and buccal cells from children (N = 1737), we observed moderately stable associations across age (correlation range [0.355–0.578]), but inconsistent across tissues (correlation range [− 0.384 to 0.318]). We conclude that DNA methylation in peripheral tissues captures little of the variance in handedness. Future investigations should consider other more targeted sources of tissue, such as the brain.

Original languageEnglish
Article number5606
JournalScientific Reports
Volume12
Issue number1
DOIs
Publication statusPublished - Dec 2022
Externally publishedYes

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