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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 PLoS+One
2016 ; 11
(5
): e0154872
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English Wikipedia
Compare and Contrast Meta Analysis (CCMA): A Method for Identification of
Pleiotropic Loci in Genome-Wide Association Studies
#MMPMID27149374
Baurecht H
; Hotze M
; Rodríguez E
; Manz J
; Weidinger S
; Cordell HJ
; Augustin T
; Strauch K
PLoS One
2016[]; 11
(5
): e0154872
PMID27149374
show ga
In recent years, genome-wide association studies (GWAS) have identified many loci
that are shared among common disorders and this has raised interest in
pleiotropy. For performing appropriate analysis, several methods have been
proposed, e.g. conducting a look-up in external sources or exploiting GWAS
results by meta-analysis based methods. We recently proposed the Compare &
Contrast Meta-Analysis (CCMA) approach where significance thresholds were
obtained by simulation. Here we present analytical formulae for the density and
cumulative distribution function of the CCMA test statistic under the null
hypothesis of no pleiotropy and no association, which, conveniently for practical
reasons, turns out to be exponentially distributed. This allows researchers to
apply the CCMA method without having to rely on simulations. Finally, we show
that CCMA demonstrates power to detect disease-specific, agonistic and
antagonistic loci comparable to the frequently used Subset-Based Meta-Analysis
approach, while better controlling the type I error rate.