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Quantile-Specific Penetrance of Genes Affecting Lipoproteins, Adiposity and Height

Journal Article · · PLoS ONE
 [1]
  1. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); DOE/OSTI
Quantile-dependent penetrance is proposed to occur when the phenotypic expression of a SNP depends upon the population percentile of the phenotype. To illustrate the phenomenon, quantiles of height, body mass index (BMI), and plasma lipids and lipoproteins were compared to genetic risk scores (GRS) derived from single nucleotide polymorphisms (SNP)s having established genome-wide significance: 180 SNPs for height, 32 for BMI, 37 for low-density lipoprotein (LDL)- cholesterol, 47 for high-density lipoprotein (HDL)-cholesterol, 52 for total cholesterol, and 31 for triglycerides in 1930 subjects. Both phenotypes and GRSs were adjusted for sex, age, study, and smoking status. Quantile regression showed that the slope of the genotype-phenotype relationships increased with the percentile of BMI (P = 0.002), LDL-cholesterol (P = 3x10-8 ), HDL-cholesterol (P = 5x10-6), total cholesterol (P = 2.5x10-6), and triglyceride distribution (P = 7.5x10-6), but not height (P = 0.09). Compared to a GRS’s phenotypic effect at the 10th population percentile, its effect at the 90th percentile was 4.2-fold greater for BMI, 4.9-fold greater for LDL-cholesterol, 1.9-fold greater for HDL-cholesterol, 3.1-fold greater for total cholesterol, and 3.3-fold greater for triglycerides. Moreover, the effect of the rs1558902 (FTO) risk allele was 6.7-fold greater at the 90th than the 10th percentile of the BMI distribution, and that of the rs3764261 (CETP) risk allele was 2.4-fold greater at the 90th than the 10th percentile of the HDL-cholesterol distribution. Conceptually, it maybe useful to distinguish environmental effects on the phenotype that in turn alters a gene’s phenotypic expression (quantile-dependent penetrance) from environmental effects affecting the gene’s phenotypic expression directly (gene-environment interaction).
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
National Heart, Lung, and Blood Institute; USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1627489
Journal Information:
PLoS ONE, Journal Name: PLoS ONE Journal Issue: 1 Vol. 7; ISSN 1932-6203
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English

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Quantile-dependent expressivity of postprandial lipemia journal February 2020
Application of quantile regression to recent genetic and -omic studies journal April 2014
Quantile-Specific Heritability may Account for Gene–Environment Interactions Involving Coffee Consumption journal January 2020
FTO genotype is associated with phenotypic variability of body mass index journal September 2012
Quantile regression analysis reveals widespread evidence for gene-environment or gene-gene interactions in myopia development journal May 2019
The importance of gene–environment interactions in human obesity journal August 2016
Non-uniform genetic effect sizes of variants associated with refractive error suggests gene-gene or gene-environment interactions are pervasive posted_content January 2018
Established and emerging strategies to crack the genetic code of obesity: Strategies to identify obesity genes journal October 2018
Prediction of Blood Lipid Phenotypes Using Obesity-Related Genetic Polymorphisms and Lifestyle Data in Subjects with Excessive Body Weight journal November 2018
Genome-wide meta-analysis identifies 11 new loci for anthropometric traits and provides insights into genetic architecture text January 2013

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