1. A comparison of founder-only and all-pedigree-members genotype-expression association by regression analysis
- Author
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Wentian Li, Young Ju Suh, Hye-Soon Lee, and Franak Batliwalla
- Subjects
Genetics ,business.industry ,Regression analysis ,General Medicine ,Quantitative trait locus ,General Biochemistry, Genetics and Molecular Biology ,Generalized linear mixed model ,Correlation ,Proceedings ,Linear regression ,Genotype ,Statistics ,Medicine ,business ,Genotyping ,Genetic association - Abstract
Genotype-expression association analysis using linear regression may produce different test results depending on whether founders only or all pedigreed members are used. This difference is not due to the correlation of samples within a pedigree, because linear mixed models have been applied to account for that correlation. We investigated the possibility that the difference is due to a dependence of expression levels on, among other things, the generation number in the pedigree. Indeed, of the 30 or so studied expression quantitative traits, several of them show significant dependence on the generation number. We propose to use all pedigree members in genotype-expression association analyses whenever the complete genotyping information is available.
- Published
- 2008