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In the past few years genome-wide association (GWA) studies have uncovered a large number of convincingly replicated associations for many complex human diseases. Genotype imputation has been used widely in the analysis of GWA studies to boost power, fine-map associations and facilitate the combination of results across studies using meta-analysis. This Review describes the details of several different statistical methods for imputing genotypes, illustrates and discusses the factors that influence imputation performance, and reviews methods that can be used to assess imputation performance and test association at imputed SNPs.

Original publication

DOI

10.1038/nrg2796

Type

Journal article

Journal

Nat Rev Genet

Publication Date

07/2010

Volume

11

Pages

499 - 511

Keywords

Biostatistics, Genome-Wide Association Study, Genotype, Models, Genetic, Polymorphism, Single Nucleotide