TY - JOUR UR - https://doi.org/10.7287/peerj.preprints.545v1 DO - 10.7287/peerj.preprints.545v1 TI - Ancestry-informative markers for African Americans based on the Affymetrix Pan-African genotyping array AU - Zhang,Xu AU - Mu,Wenbo AU - Liu,Cong AU - Zhang,Wei DA - 2014/10/18 PY - 2014 KW - admixture mapping KW - single nucleotide polymorphism KW - Pan-African array KW - ancestry-informative marker KW - African American AB - Genetic admixture has been utilized as a tool for identifying loci associated with complex traits and diseases in recently admixed populations such as African Americans. In particular, admixture mapping is an efficient approach to identifying genetic basis for those complex diseases with substantial racial or ethnic disparities. Though current advances in admixture mapping algorithms may utilize the entire panel of SNPs, providing ancestry-informative markers (AIMs) that can differentiate parental populations and estimate ancestry proportions in an admixed population may particularly benefit admixture mapping in studies of limited samples, help identify unsuitable individuals (e.g., through genotyping the most informative ancestry markers) before starting large genome-wide association studies (GWAS), or guide larger scale targeted deep re-sequencing for determining specific disease-causing variants. Defining panels of AIMs based on commercial, high-throughput genotyping platforms will facilitate the utilization of these platforms for simultaneous admixture mapping of complex traits and diseases, in addition to conventional GWAS. Here, we describe AIMs detected based on the Shannon Information Content (SIC) or Fst for African Americans with genome-wide coverage that were selected from ~2.3 million single nucleotide polymorphisms (SNPs) covered by the Affymetrix Axiom Pan-African array, a newly developed genotyping platform optimized for individuals of African ancestry. VL - 2 SP - e545v1 T2 - PeerJ PrePrints JO - PeerJ PrePrints J2 - PeerJ PrePrints SN - 2167-9843 ER -