Genome-wide genetic heterogeneity discovery with categorical covariates.
Genome-wide genetic heterogeneity discovery with categorical covariates.
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DOI:
10.1093/bioinformatics/btx071
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发表时间:
2017-06-15
期刊:
影响因子:
--
通讯作者:
Borgwardt K
中科院分区:
文献类型:
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作者:
Llinares-López F;Papaxanthos L;Bodenham D;Roqueiro D;COPDGene Investigators;Borgwardt K
Genetic heterogeneity is the phenomenon that distinct genetic variants may give rise to the same phenotype. The recently introduced algorithm Fast Automatic Interval Search (FAIS) enables the genome-wide search of candidate regions for genetic heterogeneity in the form of any contiguous sequence of variants, and achieves high computational efficiency and statistical power. Although FAIS can test all possible genomic regions for association with a phenotype, a key limitation is its inability to correct for confounders such as gender or population structure, which may lead to numerous false-positive associations. We propose FastCMH, a method that overcomes this problem by properly accounting for categorical confounders, while still retaining statistical power and computational efficiency. Experiments comparing FastCMH with FAIS and multiple kinds of burden tests on simulated data, as well as on human and Arabidopsis samples, demonstrate that FastCMH can drastically reduce genomic inflation and discover associations that are missed by standard burden tests. An R package fastcmh is available on CRAN and the source code can be found at: https://www.bsse.ethz.ch/mlcb/research/bioinformatics-and-computational-biology/fastcmh.html Supplementary data are available at Bioinformatics online.
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影响因子:
1.6
作者:
Pearson, Karl
通讯作者:
Pearson, Karl
影响因子:
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作者:
Fisher, RA
通讯作者:
Fisher, RA
影响因子:
3.7
作者:
Schmid K;Yang Z
通讯作者:
Yang Z
DOI:
10.1093/bioinformatics/btv263
发表时间:
2015-06-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Llinares-López F;Grimm DG;Bodenham DA;Gieraths U;Sugiyama M;Rowan B;Borgwardt K
通讯作者:
Borgwardt K
影响因子:
30.8
作者:
通讯作者:
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