Regionally Smoothed Meta-Analysis Methods for GWAS Datasets.

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 wi

SUBMITTER: Begum F 

PROVIDER: S-EPMC4724289 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature