Detection of sharing by descent, long-range phasing and haplotype imputation. Kong, A., Masson, G., Frigge, M., L., Gylfason, A., Zusmanovich, P., Thorleifsson, G., Olason, P., I., Ingason, A., Steinberg, S., Rafnar, T., Sulem, P., Mouy, M., Jonsson, F., Thorsteinsdottir, U., Gudbjartsson, D., F., Stefansson, H., & Stefansson, K. Nat Genet, 40(9):1068-1075, 2008. Paper Website abstract bibtex Uncertainty about the phase of strings of SNPs creates complications in genetic analysis, although methods have been developed for phasing population-based samples. However, these methods can only phase a small number of SNPs effectively and become unreliable when applied to SNPs spanning many linkage disequilibrium (LD) blocks. Here we show how to phase more than 1,000 SNPs simultaneously for a large fraction of the 35,528 Icelanders genotyped by Illumina chips. Moreover, haplotypes that are identical by descent (IBD) between close and distant relatives, for example, those separated by ten meioses or more, can often be reliably detected. This method is particularly powerful in studies of the inheritance of recurrent mutations and fine-scale recombinations in large sample sets. A further extension of the method allows us to impute long haplotypes for individuals who are not genotyped.
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title = {Detection of sharing by descent, long-range phasing and haplotype imputation},
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abstract = {Uncertainty about the phase of strings of SNPs creates complications in genetic analysis, although methods have been developed for phasing population-based samples. However, these methods can only phase a small number of SNPs effectively and become unreliable when applied to SNPs spanning many linkage disequilibrium (LD) blocks. Here we show how to phase more than 1,000 SNPs simultaneously for a large fraction of the 35,528 Icelanders genotyped by Illumina chips. Moreover, haplotypes that are identical by descent (IBD) between close and distant relatives, for example, those separated by ten meioses or more, can often be reliably detected. This method is particularly powerful in studies of the inheritance of recurrent mutations and fine-scale recombinations in large sample sets. A further extension of the method allows us to impute long haplotypes for individuals who are not genotyped.},
bibtype = {article},
author = {Kong, A and Masson, G and Frigge, M L and Gylfason, A and Zusmanovich, P and Thorleifsson, G and Olason, P I and Ingason, A and Steinberg, S and Rafnar, T and Sulem, P and Mouy, M and Jonsson, F and Thorsteinsdottir, U and Gudbjartsson, D F and Stefansson, H and Stefansson, K},
journal = {Nat Genet},
number = {9}
}
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