Cited by 67Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchGenetic Associations and Epidemiology

Evidence for parent of origin effect in late-onset Alzheimer disease

Bassett, Susan Spear, Avramopoulos, Dimitrios, Fallin, Daniele·2002·American Journal of Medical Genetics

Abstract

Evidence for a parent of origin effect in Alzheimer disease was obtained from a sample of 148 sibships on which affection status of the parents was sought using family history interviews. The parent study recruited families with two or more affected sibs for late onset AD utilizing rigorous diagnostic criteria. In 74 families, there was evidence of an affected parent, 49 maternal and 25 paternal. Genome scan data were analyzed for the sample as a whole and for the maternal and paternal families separately, using Genehunter-ASM. Seven regions with Z(lr) scores >or=2 were identified, four in maternal families (chr. 10,12,19,20) and three in paternal families (chr. 1,7,13). With the exception of the chromosome 10 finding, analysis by parent of origin greatly increased evidence of linkage in areas showing no linkage in the overall analyses. For example, a chr. 12 region reached a LOD = 2.29 among maternal families whereas the same region showed a LOD = 0.3 when all families were analyzed together. The strongest findings among maternal families (chr. 10 and 12) were followed up with fine mapping that resulted in an increase in maximum LOD scores from 2.7-3.2 on chr. 10, and 2.29-2.42 on chr. 12. These analyses highlight the importance of parent of origin effects in late-onset AD families and identify several genomic regions that may include genes linked to late-onset AD specific to disease transmission from the mother and require further investigation.

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Crossref · 10.1002/ajmg.10648

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  • Both mothers and fathers contribute to their offspring's AD risk, but mothers contribute more because mtDNA is maternally inherited.

    “In this respect, both mothers and fathers contribute to their offspring's AD risk, but because mitochondrial DNA (mtDNA) is maternally inherited mothers contribute more.”

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Authors
Bassett, S. S., Avramopoulos, D., & Fallin, D.
Affiliations
Johns Hopkins University (US)
Corresponding author
Bassett, Susan Spear
Venue
American Journal of Medical Genetics
Publisher
Wiley
Published
2002-08-08
Volume
114
Issue
6
Pages
679-686
ISSN
  • 0148-7299 (ISSN-L)
  • 1096-8628
OpenAlex
W1968087197
Cited by
66
References
47
Citations by year
2024: 2 · 2023: 1 · 2019: 2 · 2018: 1 · 2017: 3 · 2015: 4 · 2014: 2 · 2013: 7 · 2012: 3
FWCI
1.80
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Medical Genetics (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Johns Hopkins University
  • National Institute of Mental Health (U01MH046290, MH46290)
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
late-onset Alzheimer's disease, parent-of-origin effects, sibships, family history (medicine), genome scan, genetic linkage, maternal family, chromosome 10, chromosome 12, fine mapping
MeSH terms
Alzheimer Disease, Chromosome Mapping, Fathers, Female, Genotype, Humans, Genetic Linkage, Lod Score, Male, Mothers, Models, Statistical, Age of Onset, Genomic Imprinting, Microsatellite Repeats

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