A unified framework for association analysis with multiple related phenotypes.
A unified framework for association analysis with multiple related phenotypes.
复制标题
与多种相关表型的关联分析的统一框架。
DOI:
10.1371/journal.pone.0065245
复制
发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Stephens M
中科院分区:
文献类型:
--
作者:
Stephens M
We consider the problem of assessing associations between multiple related outcome variables, and a single explanatory variable of interest. This problem arises in many settings, including genetic association studies, where the explanatory variable is genotype at a genetic variant. We outline a framework for conducting this type of analysis, based on Bayesian model comparison and model averaging for multivariate regressions. This framework unifies several common approaches to this problem, and includes both standard univariate and standard multivariate association tests as special cases. The framework also unifies the problems of testing for associations and explaining associations – that is, identifying which outcome variables are associated with genotype. This provides an alternative to the usual, but conceptually unsatisfying, approach of resorting to univariate tests when explaining and interpreting significant multivariate findings. The method is computationally tractable genome-wide for modest numbers of phenotypes (e.g. 5–10), and can be applied to summary data, without access to raw genotype and phenotype data. We illustrate the methods on both simulated examples, and to a genome-wide association study of blood lipid traits where we identify 18 potential novel genetic associations that were not identified by univariate analyses of the same data.
登录
查看更多内容
影响因子:
1.8
作者:
Finegold, Michael;Drton, Mathias
通讯作者:
Drton, Mathias
影响因子:
4.5
作者:
Engelhardt BE;Stephens M
通讯作者:
Stephens M
DOI:
10.1093/bioinformatics/btn653
发表时间:
2009-03-01
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Chelala C;Khan A;Lemoine NR
通讯作者:
Lemoine NR
影响因子:
4.5
作者:
Hoggart, Clive J.;Whittaker, John C.;De Iorio, Maria;Balding, David J.
通讯作者:
Balding, David J.
DOI:
10.1093/bioinformatics/btp218
发表时间:
2009-06-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Kim S;Sohn KA;Xing EP
通讯作者:
Xing EP