Transethnic genome-wide scan identifies novel Alzheimer's disease loci
- PMID: 28183528
- PMCID: PMC5496797
- DOI: 10.1016/j.jalz.2016.12.012
Transethnic genome-wide scan identifies novel Alzheimer's disease loci
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.
Keywords: APOE interaction; Alzheimer's disease; Genome-wide association; Transethnic.
Copyright © 2017 The Authors. Published by Elsevier Inc. All rights reserved.
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