Abstract:
:Genome-wide association studies are proven tools for finding disease genes, but it is often necessary to combine many cohorts into a meta-analysis to detect statistically significant genetic effects. Often the component studies are performed by different investigators on different populations, using different chips with minimal SNPs overlap. In some cases, raw data are not available for imputation so that only the genotyped single nucleotide polymorphisms (SNPs) results can be used in meta-analysis. Even when SNP sets are comparable, different cohorts may have peak association signals at different SNPs within the same gene due to population differences in linkage disequilibrium or environmental interactions. We hypothesize that the power to detect statistical signals in these situations will improve by using a method that simultaneously meta-analyzes and smooths the signal over nearby markers. In this study, we propose regionally smoothed meta-analysis methods and compare their performance on real and simulated data.
journal_name
Genet Epidemioljournal_title
Genetic epidemiologyauthors
Begum F,Sharker MH,Sherman SL,Tseng GC,Feingold Edoi
10.1002/gepi.21949subject
Has Abstractpub_date
2016-02-01 00:00:00pages
154-60issue
2eissn
0741-0395issn
1098-2272journal_volume
40pub_type
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