Evidence map›Paper›PMID 21784354›Full record

ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2011

The effect of TOMM40 poly-T length on gray matter volume and cognition in middle-aged persons with APOE ε3/ε3 genotype.

Sterling C Johnson, Asenath La Rue, Bruce P Hermann, Guofan Xu, Rebecca L Koscik, Erin M Jonaitis, Barbara B Bendlin, Kirk J Hogan, Allen D Roses, Ann M Saunders and 4 more

Open access · greenAbstract read
In one paragraph

Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed, 1 pooled it
6.2field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

90 citing papers in PubMed, 1 synthesis or guideline pooled it, 114 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Fecal short-chain fatty acids vary by sex and amyloid status.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  4. Article
  5. Lifestyle, genetic risk, plasma pTau217, and incident cognitive impairment in WRAP.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. International journal of molecular sciences · 2023
    Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Interaction of amyloid and tau on cortical microstructure in cognitively unimpaired adults.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2022
    Article
  19. Article
  20. Impact of sex andJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
    Article

30 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors at 5 institutions in 1 country.

Sterling C JohnsonWisconsin Alzheimer's Institute, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA. scjohnson@wisc.edu
Asenath La Rue
Bruce P Hermann
Guofan Xu
Rebecca L Koscik
Erin M Jonaitis
Barbara B Bendlin
Kirk J Hogan
Allen D Roses
Ann M Saunders
Michael W Lutz
Sanjay Asthana
Robert C Green
Mark A Sager
University of Wisconsin–Madison · USDiscovery Institute · USBoston Public Schools · USDuke University · USWilliam S. Middleton Memorial Veterans Hospital · US

Funding

Wisconsin Registry for Alzheimer's Prevention: Sex Differences in DNA MethylationR01AG027161 · NIA · UNIVERSITY OF WISCONSIN-MADISON · PI Nathaniel Ark Chin, Sterling C Johnson · 2007 to 2026
$35.6M
INSTITUTIONAL CTSA (UW-MADISON): CLINICAL TRIALSUL1RR025011 · NCRR · UNIVERSITY OF WISCONSIN-MADISON · PI DREZNER, MARC KENNETH · 2007 to 2011
$29.5M
The Longitudinal Course of Neural Function and Amyloid in People At Risk for ADR01AG021155 · NIA · UNIVERSITY OF WISCONSIN-MADISON · PI Sterling C Johnson · 2004 to 2026
$27.0M
WISCONSIN CENTER ON MENTAL RETARDATION: CORE SUPPORTP30HD003352 · NICHD · UNIVERSITY OF WISCONSIN-MADISON · PI MESSING, ALBEE · 1985 to 2015
$25.2M
Wisconsin Alzheimer's Disease Research CenterP50AG033514 · NIA · UNIVERSITY OF WISCONSIN-MADISON · PI CHAPPELL, RICHARD J · 2009 to 2018
$16.2M
Genetic Factors that Impact the Risk of Alzheimer's DiseaseRC1AG035635 · NIA · DUKE UNIVERSITY · PI ROSES, ALLEN D · 2009 to 2010
$820k
NCRR NIH HHS UL1 RR025011NCRR NIH HHS UL1RR025011NIA NIH HHS P50 AG033514NIA NIH HHS R01 AG021155NIA NIH HHS R01 AG027161NIA NIH HHS RC1 AG035635NIA NIH HHS RC1AG035635-01NICHD NIH HHS P30 HD003352
6 · The paper itself

Abstract

objectiveApolipoprotein E (APOE) genotypes are associated with variable risk of developing late-onset Alzheimer's disease (LOAD), with APOE epsilon 4 (APOE ε4) having higher risk. A variable poly-T length polymorphism at rs10524523, within intron 6 of the translocase of the outer mitochondrial membrane (TOMM40) gene, has been shown to influence age of onset in LOAD, with very long (VL) poly-T length associated with earlier disease onset, and short poly-T length associated with later onset. In this study, we tested the hypothesis that brain and cognitive changes suggestive of presymptomatic LOAD may be associated with this TOMM40 polymorphism.

methodsAmong healthy APOE ε3 homozygous adults (N = 117; mean age, 55 years), we compared those who were homozygous for VL/VL (n = 35) TOMM40 poly-T lengths (who were presumably at higher risk) with those homozygous for short (S/S; n = 38) poly-T lengths, as well as those with heterozygous (S/VL; n = 44) poly-T length polymorphisms, on measures of learning and memory and on structural brain imaging.

resultsThe VL/VL group showed lower performance than the S/S TOMM40 group on primacy retrieval from a verbal list learning task, a finding which is also seen in early Alzheimer's disease. A dose-dependent increase in the VL TOMM40 polymorphism (from no VL alleles, to S/VL heterozygous, to VL/VL homozygous) was associated with decreasing gray matter volume in the ventral posterior cingulate and medial ventral precuneus, a region of the brain affected early in LOAD.

conclusionsThese findings among APOE ε3/ε3 late middle-aged adults suggest that a subgroup with VL TOMM40 poly-T lengths may be experiencing incipient LOAD-related cognitive and brain changes.

Indexed as

Age FactorsAlzheimer DiseaseAnalysis of VarianceApolipoprotein E3BrainCognition DisordersFemaleGene FrequencyGenotypeHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleMembrane Transport ProteinsMiddle AgedMitochondrial Precursor Protein Import Complex ProteinsApolipoprotein E3Membrane Transport ProteinsMitochondrial Precursor Protein Import Complex ProteinsPoly TTOMM40 protein, human

Identifiers

PMID21784354
PMCPMC3143375
OpenAlexW2085579734

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.