Title

The 1p13.3 LDL (C)-Associated Locus Shows Large Effect Sizes in Young Populations

Authors

Authors

J. M. Devaney; P. D. Thompson; P. S. Visich; W. A. Saltarelli; P. M. Gordon; E. F. Orkunoglu-Suer; H. Gordish-Dressman; B. T. Harmon; M. K. Bradbury; K. Panchapakesan; R. Khianey; M. J. Hubal; P. M. Clarkson; L. S. Pescatello; R. F. Zoeller; N. M. Moyna; T. J. Angelopoulos; W. E. Kraus;E. P. Hoffman

Comments

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Abbreviated Journal Title

Pediatr. Res.

Keywords

GENOME-WIDE ASSOCIATION; CIRCULATING OXIDIZED LDL; LOW-DENSITY-LIPOPROTEIN; METABOLIC SYNDROME; CHOLESTEROL; DISEASE; WOMEN; RISK; ADOLESCENTS; PREDICTION; Pediatrics

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 x 10(x6)] and children [TT: 94.0 +/- 1.3 mg/dL (n = 551) versus CT/CC: 84.7 +/- 1.4 mg/dL (n = 259); p = 4 X 10(x6)]. 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%). (Pediatr Res 69: 538-543, 2011)

Journal Title

Pediatric Research

Volume

69

Issue/Number

6

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

538

Last Page

543

WOS Identifier

WOS:000290831700012

ISSN

0031-3998

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