Imputation of Rare Variants in Next-Generation Association Studies
Open Access
- 1 January 2012
- journal article
- Published by S. Karger AG in Human Heredity
- Vol. 74 (3-4) , 196-204
Abstract
The role of rare variants has become a focus in the search for association with complex traits. Imputation is a powerful and cost-efficient tool to access variants that have not been directly typed, but there are several challenges when imputing rare variants, most notably reference panel selection. Extensions to rare variant association tests to incorporate genotype uncertainty from imputation are discussed, as well as the use of imputed low-frequency and rare variants in the study of population isolates.Keywords
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