Multivariate association test using haplotype trend regression.
Multivariate association test using haplotype trend regression.
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DOI:
10.1111/j.1469-1809.2009.00527.x
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发表时间:
2009-07
影响因子:
1.9
通讯作者:
Deng HW
中科院分区:
文献类型:
--
作者:
Pei YF;Zhang L;Liu J;Deng HW
Genetic association analyses with haplotypes may be more powerful than analyses with single markers, under certain conditions. Furthermore, simultaneously considering multiple correlated traits may make use of additional information that would not be considered when analyzing individual traits. In this study, we propose a haplotype based test of association for multivariate quantitative traits in unrelated samples. Specifically, we extend a population based haplotype trend regression (HTR) approach to multivariate scenarios. We mainly focused on bivariate HTR, and the simulation results showed that the proposed method had correct pre-specified type-I error rates. The power of the proposed method was largely influenced by the size and source of correlation between variables, being greatest when correlation of a specific gene was opposite in sign to the residual correlation.
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