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Front Genet. 2018 Oct 09;9:420. doi: 10.3389/fgene.2018.00420. eCollection 2018.

Whole-Genome Linkage Scan Combined With Exome Sequencing Identifies Novel Candidate Genes for Carotid Intima-Media Thickness.

Frontiers in genetics

Dina Vojinovic, Maryam Kavousi, Mohsen Ghanbari, Rutger W W Brouwer, Jeroen G J van Rooij, Mirjam C G N van den Hout, Robert Kraaij, Wilfred F J van Ijcken, Andre G Uitterlinden, Cornelia M van Duijn, Najaf Amin

Affiliations

  1. Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, Netherlands.
  2. Department of Genetics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
  3. Department of Cell Biology, Center for Biomics, Erasmus MC University Medical Center, Rotterdam, Netherlands.
  4. Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, Netherlands.
  5. Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom.

PMID: 30356672 PMCID: PMC6189289 DOI: 10.3389/fgene.2018.00420

Abstract

Carotid intima-media thickness (cIMT) is an established heritable marker for subclinical atherosclerosis. In this study, we aim to identify rare variants with large effects driving differences in cIMT by performing genome-wide linkage analysis of individuals in the extremes of cIMT trait distribution (>90th percentile) in a large family-based study from a genetically isolated population in the Netherlands. Linked regions were subsequently explored by fine-mapping using exome sequencing. We observed significant evidence of linkage on chromosomes 2p16.3 [rs1017418, heterogeneity LOD (HLOD) = 3.35], 19q13.43 (rs3499, HLOD = 9.09), 20p13 (rs1434789, HLOD = 4.10), and 21q22.12 (rs2834949, HLOD = 3.59). Fine-mapping using exome sequencing data identified a non-coding variant (rs62165235) in

Keywords: atherosclerosis; exome sequencing; genetics; intima-media thickness; linkage

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