Evidence map›Paper›PMID 24260406›Full record

ArticlePloS one2013

Alzheimer's disease susceptibility genes APOE and TOMM40, and hippocampal volumes in the Lothian birth cohort 1936.

Donald M Lyall, Natalie A Royle, Sarah E Harris, Mark E Bastin, Susana Muñoz Maniega, Catherine Murray, Michael W Lutz, Ann M Saunders, Allen D Roses, Maria C del Valdés Hernández and 4 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

19 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
  2. Associations and interactions betweenBrain communications · 2025
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. APOE in the normal brain.Neurobiology of disease · 2020
    Review
  9. Article
  10. Article
  11. The effects of the TOMM40 poly-T alleles on Alzheimer's disease phenotypes.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2018
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
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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 6 institutions in 2 countries.

Donald M LyallCentre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom ; Brain Research Imaging Centre, Division of Neuroimaging Sciences, University of Edinburgh, Edinburgh, United Kingdom ; Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom ; Medical Genetics Section, Centre for Genomics and Experimental Medicine and MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom.
Natalie A Royle
Sarah E Harris
Mark E Bastin
Susana Muñoz Maniega
Catherine Murray
Michael W Lutz
Ann M Saunders
Allen D Roses
Maria C del Valdés Hernández
John M Starr
David J Porteous
Joanna M Wardlaw
Ian J Deary
University of Edinburgh · GBMRC Institute of Genetics and Molecular Medicine · GBAlzheimer Scotland · GBDuke Medical Center · USDuke University · USDuke University Hospital · US

Funding

Biotechnology and Biological Sciences Research CouncilMedical Research Council G0100266Medical Research Council G0700704Medical Research Council G1001245Medical Research Council MR/K026992/1Wellcome Trust
6 · The paper itself

Abstract

The APOE ε and TOMM40 rs10524523 ('523') variable length poly-T repeat gene loci have been significantly and independently associated with Alzheimer's disease (AD) related phenotypes such as age of clinical onset. Hippocampal atrophy has been significantly associated with memory impairment, a characteristic of AD. The current study aimed to test for independent effects of APOE ε and TOMM40 '523' genotypes on hippocampal volumes as assessed by brain structural MRI in a relatively large sample of community-dwelling older adults. As part of a longitudinal study of cognitive ageing, participants in the Lothian Birth Cohort 1936 underwent genotyping for APOE ε2/ε3/ε4 status and TOMM40 '523' poly-T repeat length, and detailed structural brain MRI at a mean age of 72.7 years (standard deviation = 0.7, N range = 624 to 636). No significant effects of APOE ε or TOMM40 523 genotype were found on hippocampal volumes when analysed raw, or when adjusted for either intracranial or total brain tissue volumes. In summary, in a large community-dwelling sample of older adults, we found no effects of APOE ε or TOMM40 523 genotypes on hippocampal volumes. This is discrepant with some previous reports of significant association between APOE and left/right hippocampal volumes, and instead echoes other reports that found no association. Previous significant findings may partly reflect type 1 error. Future studies should carefully consider: 1) their specific techniques in adjusting for brain size; 2) assessing more detailed sub-divisions of the hippocampal formation; and 3) testing whether significant APOE-hippocampal associations are independent of generalised brain atrophy.

Indexed as

Genetic Predisposition to DiseaseAgedAlzheimer DiseaseApolipoproteins EFemaleGene FrequencyGenotypeHippocampusHumansMagnetic Resonance ImagingMaleMembrane Transport ProteinsMitochondrial Precursor Protein Import Complex ProteinsOrgan SizeApolipoproteins EMembrane Transport ProteinsMitochondrial Precursor Protein Import Complex ProteinsTOMM40 protein, human

Identifiers

PMID24260406
PMCPMC3829876
OpenAlexW2150421036

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Registered trials

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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.