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. 2024 Dec;20(12):8470-8483.
doi: 10.1002/alz.14283. Epub 2024 Oct 20.

Association of common and rare variants with Alzheimer's disease in more than 13,000 diverse individuals with whole-genome sequencing from the Alzheimer's Disease Sequencing Project

Affiliations

Association of common and rare variants with Alzheimer's disease in more than 13,000 diverse individuals with whole-genome sequencing from the Alzheimer's Disease Sequencing Project

Wan-Ping Lee et al. Alzheimers Dement. 2024 Dec.

Abstract

Introduction: Alzheimer's disease (AD) is a common disorder of the elderly that is both highly heritable and genetically heterogeneous.

Methods: We investigated the association of AD with both common variants and aggregates of rare coding and non-coding variants in 13,371 individuals of diverse ancestry with whole genome sequencing (WGS) data.

Results: Pooled-population analyses of all individuals identified genetic variants at apolipoprotein E (APOE) and BIN1 associated with AD (p < 5 × 10-8). Subgroup-specific analyses identified a haplotype on chromosome 14 including PSEN1 associated with AD in Hispanics, further supported by aggregate testing of rare coding and non-coding variants in the region. Common variants in LINC00320 were observed associated with AD in Black individuals (p = 1.9 × 10-9). Finally, we observed rare non-coding variants in the promoter of TOMM40 distinct of APOE in pooled-population analyses (p = 7.2 × 10-8).

Discussion: We observed that complementary pooled-population and subgroup-specific analyses offered unique insights into the genetic architecture of AD.

Highlights: We determine the association of genetic variants with Alzheimer's disease (AD) using 13,371 individuals of diverse ancestry with whole genome sequencing (WGS) data. We identified genetic variants at apolipoprotein E (APOE), BIN1, PSEN1, and LINC00320 associated with AD. We observed rare non-coding variants in the promoter of TOMM40 distinct of APOE.

Keywords: Alzheimer's disease; genetics; rare genetic variants; whole genome sequencing.

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Conflict of interest statement

The authors declare no conflicts of interest. Author disclosures are available in the supporting information.

Figures

FIGURE 1
FIGURE 1
Study overview. Three types of association analyses in four sets of individuals were performed, pooled samples, non‐Hispanic Whites (NHW), African Americans (AA), and Hispanics (HIS). The pooled samples set included all individuals in the NHW, AA, and HIS sets, plus individuals that were not defined to be in one of those subsets.
FIGURE 2
FIGURE 2
Association of APOE alleles with AD by subgroup. AA, African American; AD, Alzheimer's disease; APOE, apolipoprotein E; CI, confidence interval; HIS, Hispanic; LCL, lower confidence limit; MAF, minor allele frequency; NHW, non‐Hispanic White; OR, odds ratio; PP, pooled population (samples); UCL, upper confidence limit.
FIGURE 3
FIGURE 3
Association of PSEN1 with AD by subgroup, with and without p.G206A (rs63750082) included. We performed aggregated‐based association testing for variants within PSEN1 in the pooled sample as well as in each subgroup. We then removed the p.G206A variant (rs63750082) from the aggregation‐based test. We observed that the odds ratio and p value reduced significantly after excluding rs63750082 in the Hispanic subset but the results remained consistent in the NHW and AA subsets. AA, Black or African American; AD, Alzheimer's disease; CI, confidence interval; cMAC, cumulative minor allele counts across the variants contributing to the analysis; N variant, number of variants contributing to the analysis; NHW, non‐Hispanic White.

Update of

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