Transethnic genome-wide scan identifies novel Alzheimer's disease loci

Academic Article

Abstract

  • Introduction Genetic loci for Alzheimer's disease (AD) have been identified in whites of European ancestry, but the genetic architecture of AD among other populations is less understood. Methods We conducted a transethnic genome-wide association study (GWAS) for late-onset AD in Stage 1 sample including whites of European Ancestry, African-Americans, Japanese, and Israeli-Arabs assembled by the Alzheimer's Disease Genetics Consortium. Suggestive results from Stage 1 from novel loci were followed up using summarized results in the International Genomics Alzheimer's Project GWAS dataset. Results Genome-wide significant (GWS) associations in single-nucleotide polymorphism (SNP)–based tests (P < 5 × 10−8) were identified for SNPs in PFDN1/HBEGF, USP6NL/ECHDC3, and BZRAP1-AS1 and for the interaction of the (apolipoprotein E) APOE ε4 allele with NFIC SNP. We also obtained GWS evidence (P < 2.7 × 10−6) for gene-based association in the total sample with a novel locus, TPBG (P = 1.8 × 10−6). Discussion Our findings highlight the value of transethnic studies for identifying novel AD susceptibility loci.
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    Digital Object Identifier (doi)

    Author List

  • Jun GR; Chung J; Logue MW; Sherva R; Farrer LA; Mez J; Barber R; Beecham GW; Hamilton-Nelson KL; Kunkle BW
  • Start Page

  • 727
  • End Page

  • 738
  • Volume

  • 13
  • Issue

  • 7