Cited by 69Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsMitochondrial Function and Pathology

Longitudinal modeling of cognitive aging and the TOMM40 effect

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Caselli, Richard J., Dueck, Amylou C., Huentelman, Matthew J., Lutz, Michael W., Saunders, Ann M., Reiman, Eric M., Roses, Allen D.·2012·Alzheimer's & Dementia

Abstract

BACKGROUND: TOMM40 (translocase of the outer mitochondrial membrane pore subunit) is in linkage disequilibrium with apolipoprotein E (APOE). APOE e4 is linked to long (L; 21-29 T residues) poly-T variants within intron 6 of TOMM40, whereas APOE e3 can be associated with either a short (S; <21 T residues) or very long (VL; >29 T residues) variant. To assess the possible contribution of TOMM40 to Alzheimer's disease onset, we compared the effects of TOMM40 and APOE genotype on preclinical longitudinal memory decline. METHODS: An APOE e4-enriched cohort of 639 cognitively normal individuals aged 21 to 97 years with known TOMM40 genotype underwent longitudinal neuropsychological testing every 2 years. We estimated the longitudinal effect of age on memory using statistical models that simultaneously modeled cross-sectional and longitudinal effects of age on the Auditory Verbal Learning Test Long-Term Memory score by APOE, TOMM40, and the interaction between the two. RESULTS: There were significant effects overall for both TOMM40 (linear effect, P = .04; quadratic effect, P = .03) and APOE (linear effect, P = .06; quadratic effect, P = .008), with no significant interaction (P = .63). In a piecewise model, there was a significant TOMM40 effect before age 60 years (P = .009), characterized by flattened test-retest improvement (VL/VL subgroup only) but no significant APOE effect, and a significant APOE effect after age 60 years (P = .006), characterized by accelerated memory decline (e4 carriers) but no significant TOMM40 effect. CONCLUSION: Both TOMM40 and APOE significantly influence age-related memory performance, but they appear to do so independently of each other.

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Authors
Caselli, R. J., Dueck, A. C., Huentelman, M. J., Lutz, M. W., Saunders, A. M., Reiman, E. M., & Roses, A. D.
Affiliations
  • Mayo Clinic in Arizona (US)
  • Translational Genomics Research Institute (US)
  • Duke University (US)
Corresponding author
Caselli, Richard J.
Venue
Alzheimer's & Dementia
Publisher
Wiley
Published
2012-11
Volume
8
Issue
6
Pages
490-495
ISSN
  • 1552-5260 (ISSN-L)
  • 1552-5279
OpenAlex
W2011563517
Cited by
69
References
26
Citations by year
2026: 2 · 2025: 1 · 2024: 3 · 2023: 4 · 2022: 4 · 2021: 4 · 2020: 1 · 2019: 3 · 2018: 5 · 2017: 13 · 2016: 6 · 2015: 4 · 2014: 10 · 2013: 8 · 2012: 1
FWCI
5.17
Type
journal article
Language
en
Open access
Locations
  • Alzheimer s & Dementia (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
Duke University (P30AG19610, R01AG6031581)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
TOMM40, apolipoprotein E
MeSH terms
Mitochondrial Precursor Protein Import Complex Proteins, Adult, Aged, Aged, 80 and over, Aging, Alzheimer Disease, Apolipoproteins E, Female, Genotype, Humans, Male, Middle Aged, Neuropsychological Tests, Genetic Predisposition to Disease, Membrane Transport Proteins, Young Adult

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