Genome-wide scan on plasma triglyceride and HDL cholesterol levels
Author Information
Author(s): Lin Jing-Ping, Laura Almasy, Christopher I Amos, Joan E Bailey-Wilson, Rita M Cantor, Cashell E Jaquish, Maria Martinez, Rosalind J Neuman, Jane M Olson, Lyle J Palmer, Stephen S Rich, M Anne Spence, Jean W MacCluer
Primary Institution: National Heart, Lung and Blood Institute, National Institutes of Health
Hypothesis
Can incorporating correlated traits as covariates improve the detection of genes influencing triglyceride and HDL cholesterol levels?
Conclusion
There is strong evidence for a QTL on chromosome 6 near marker GATA184A08 influencing the variation of HDL cholesterol and triglycerides in the Framingham population.
Supporting Evidence
- The study found a significant genetic correlation between triglyceride and HDL cholesterol levels.
- Bivariate linkage analysis improved the power to detect shared genes for correlated traits.
- Chromosomal regions were identified that may harbor genes influencing triglyceride and HDL cholesterol levels.
Takeaway
Scientists looked at genes that might affect fat levels in the blood and found a specific area on chromosome 6 that seems to control both triglycerides and HDL cholesterol.
Methodology
Univariate and bivariate genome scans were performed on triglyceride and HDL cholesterol levels using data from the Framingham Heart Study.
Limitations
The study did not include all potential covariates, such as body mass index, which may affect the results.
Participant Demographics
The study included 1702 genotyped individuals from 330 extended Framingham families, with ages ranging from 5 to 70 years.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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