Cited by 45Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchGenetic Associations and Epidemiology

Pooling/bootstrap-based GWAS (pbGWAS) identifies new loci modifying the age of onset in PSEN1 p.Glu280Ala Alzheimer's disease

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Vélez, J I, Chandrasekharappa, S C, Henao, E, Martinez, A F, Harper, U, Jones, M, Solomon, B D, Lopez, L +12 more·2013·Molecular Psychiatry

Abstract

The literature on GWAS (genome-wide association studies) data suggests that very large sample sizes (for example, 50,000 cases and 50,000 controls) may be required to detect significant associations of genomic regions for complex disorders such as Alzheimer's disease (AD). Because of the challenges of obtaining such large cohorts, we describe here a novel sequential strategy that combines pooling of DNA and bootstrapping (pbGWAS) in order to significantly increase the statistical power and exponentially reduce expenses. We applied this method to a very homogeneous sample of patients belonging to a unique and clinically well-characterized multigenerational pedigree with one of the most severe forms of early onset AD, carrying the PSEN1 p.Glu280Ala mutation (often referred to as E280A mutation), which originated as a consequence of a founder effect. In this cohort, we identified novel loci genome-wide significantly associated as modifiers of the age of onset of AD (CD44, rs187116, P=1.29 × 10⁻¹²; NPHP1, rs10173717, P=1.74 × 10⁻¹²; CADPS2, rs3757536, P=1.54 × 10⁻¹⁰; GREM2, rs12129547, P=1.69 × 10⁻¹³, among others) as well as other loci known to be associated with AD. Regions identified by pbGWAS were confirmed by subsequent individual genotyping. The pbGWAS methodology and the genes it targeted could provide important insights in determining the genetic causes of AD and other complex conditions.

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  • A previous genome-wide association study by the authors found that genome-wide intronic variants are significantly associated as modifiers of age of onset in the E280A pedigree.

    “Indeed, a previous analysis by our group using a genome-wide association study approach found that genome-wide intronic variants significantly associated as ADAOO modifiers.10”

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  1. Hartung J. A note on combining dependent tests of significance. Biometrical J 1999; 41: 849--855.
  2. Sham P, Bader JS, Craig I, O'Donovan M, Owen M. DNA Pooling: a tool for large- scale association studies. Nat Rev Genet 2002; 3: 862--871.

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Authors
Vélez, J. I., Chandrasekharappa, S. C., Henao, E., Martinez, A. F., Harper, U., Jones, M., Solomon, B. D., Lopez, L., Garcia, G., Aguirre-Acevedo, D. C., Acosta-Baena, N., Correa, J. C., Lopera-Gómez, C. M., Jaramillo-Elorza, M. C., Rivera, D., Kosik, K. S., Schork, N. J., Swanson, J. M., Lopera, F., & Arcos-Burgos, M.
Affiliations
  • National Institutes of Health (US)
  • Universidad de Antioquia (CO)
  • Universidad Nacional de Colombia (CO)
  • University of California, Santa Barbara (US)
  • Scripps Research Institute (US)
  • Florida International University (US)
Venue
Molecular Psychiatry
Published
2012-06-19
Volume
18
Issue
5
Pages
568-575
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W2015628552
Cited by
44
References
45
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 2 · 2022: 2 · 2021: 6 · 2020: 4 · 2019: 3 · 2018: 4 · 2017: 3 · 2016: 5 · 2015: 3 · 2014: 1 · 2013: 2
FWCI
1.29
Type
journal article
Language
en
Open access
Locations
  • Molecular Psychiatry (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • Florida International University Digital Commons (Florida International University) (submittedVersion, cc-by-nc-sa)
  • eScholarship (California Digital Library) (submittedVersion)
  • ANU Open Research (Australian National University) (submittedVersion)
  • Repositorio Digital - Academia Colombiana de Ciencias Exactas, Fisicas y Naturales (submittedVersion, other-oa)
Funders
  • Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
  • Australian National University
  • Curtin University of Technology
  • Universidad de Antioquia
  • National Institutes of Health
  • National Human Genome Research Institute (ZICHG200346)
  • NHLBI Division of Intramural Research
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
Keywords
Alzheimer's disease, early-onset Alzheimer's disease, PSEN1 E280A mutation, age of onset, genetic modifiers, bootstrapping, CD44, NPHP1, GREM2, founder effect, multigenerational pedigree, statistical power
MeSH terms
Alanine, Alzheimer Disease, Female, Gene Frequency, Genotype, Humans, Male, Mutation, Cohort Studies, Databases, Factual, Age of Onset, Glutamic Acid, Founder Effect, Genetic Predisposition to Disease, Polymorphism, Single Nucleotide, Quantitative Trait Loci, Presenilin-1, Genome-Wide Association Study

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