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Simulating linkage disequilibrium structures in a human population for SNP association studies.

ABSTRACT: Existing simulation methods usually simulate linkage disequilibrium (LD) structures starting with an initial population that is randomly generated according to specified allele frequencies. These at random based methods might be unstable because the LD level of the initial population is generally extremely low. This study presents a new algorithm, SIMLD, to simulate genome populations with real LD structures. SIMLD begins from an initial population with possibly the highest LD level, and then the LD decays to fit the desired level through processes of mating and recombination over generations. SIMLD can produce case-control samples according to various disease models. Using empirical SNP marker information from three populations of HapMap data, we implement the proposed algorithm and demonstrate a set of experimental results.

SUBMITTER: Yuan X

PROVIDER: S-EPMC4116680 | biostudies-literature | 2011 Jun

REPOSITORIES: biostudies-literature

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Simulating linkage disequilibrium structures in a human population for SNP association studies.

Yuan Xiguo X Zhang Junying J Wang Yue Y

Biochemical genetics 20110114 5-6

Existing simulation methods usually simulate linkage disequilibrium (LD) structures starting with an initial population that is randomly generated according to specified allele frequencies. These at random based methods might be unstable because the LD level of the initial population is generally extremely low. This study presents a new algorithm, SIMLD, to simulate genome populations with real LD structures. SIMLD begins from an initial population with possibly the highest LD level, and then th ...[more]

PMID: 21234669

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