Title

The 1P13.3 Ldl (C)-Associated Locus Shows Large Effect Sizes In Young Populations

Abstract

Genome-wide association studies (GWASs) have identified polymorphic loci associated with coronary artery disease (CAD) risk factors (i.e. serum lipids) in adult populations (42-69 y). We hypothesized that younger populations would show a greater relative genetic component due to fewer confounding variables. We examined the influence of 20 GWAS loci associated with serum lipids and insulin metabolism, in a university student cohort (n = 548; mean age = 24 y), and replicated statistically associated results in a second study cohort of primary school students (n = 810, mean age = 11.5 y). Nineteen loci showed no relationship with studied risk factors in young adults. However, the ancestral allele of the rs646776 (SORT1) locus was strongly associated with increased LDL (C) in young adults [TT: 97.6 ± 1.0 mg/dL (n = 345) versus CT/CC: 87.3 ± 1.0 mg/dL (n = 203); p = 3 × 10] and children [TT: 94.0 ± 1.3 mg/dL (n = 551) versus CT/CC: 84.7 ± 1.4 mg/dL (n = 259); p = 4 × 10]. This locus is responsible for 3.6% of population variance in young adults and 2.5% of population variance in children. The effect size of the SORT1 locus is considerably higher in young populations (2.5-4.1%) compared with older subjects (1%). Copyright © 2011 International Pediatric Research Foundation, Inc.

Publication Date

6-1-2011

Publication Title

Pediatric Research

Volume

69

Issue

6

Number of Pages

538-543

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1203/PDR.0b013e3182139227

Socpus ID

79955809851 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/79955809851

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