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This article is part of the supplement: Genetic Analysis Workshop 17: Unraveling Human Exome Data

Open Access Proceedings

Genome-wide association analysis of GAW17 data using an empirical Bayes variable selection

Vitara Pungpapong, Libo Wang, Yanzhu Lin, Dabao Zhang and Min Zhang*

Author Affiliations

Department of Statistics, Purdue University, West Lafayette, IN 47907, USA

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BMC Proceedings 2011, 5(Suppl 9):S5  doi:10.1186/1753-6561-5-S9-S5

Published: 29 November 2011

Abstract

Next-generation sequencing technologies enable us to explore rare functional variants. However, most current statistical techniques are too underpowered to capture signals of rare variants in genome-wide association studies. We propose a supervised coalescing of single-nucleotide polymorphisms to obtain gene-based markers that can stably reveal possible genetic effects related to rare alleles. We use a newly developed empirical Bayes variable selection algorithm to identify associations between studied traits and genetic markers. Using our novel method, we analyzed the three continuous phenotypes in the GAW17 data set across 200 replicates, with intriguing results.