Evidence map›Paper›PMID 27157680›Full record

ArticleBiological psychiatry2017

Multimodal Brain Imaging Reveals Structural Differences in Alzheimer's Disease Polygenic Risk Carriers: A Study in Healthy Young Adults.

Sonya F Foley, Katherine E Tansey, Xavier Caseras, Thomas Lancaster, Tobias Bracht, Greg Parker, Jeremy Hall, Julie Williams, David E J Linden

Open access · hybridAbstract read
In one paragraph

Article in Biological psychiatry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 4 pooled it
7.7field-weighted citation impact, top 2% 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

60 citing papers in PubMed, 4 syntheses or guidelines pooled it, 109 citations in OpenAlex.

  1. Pooled it
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  5. Article
  6. Genetic architecture of the limbic white matter microstructure in aging and Alzheimer's Disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
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  8. White Matter Microstructural Alterations Mediate the Association between Polygenic Risk for Alzheimer's Disease and Cognitive Performance in Clinically Asymptomatic Adults.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2026
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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

9 authors at 2 institutions in 1 country.

Sonya F FoleyCardiff University Medical Research Council Centre for Neuropsychiatric Genetics and Genomics, Wales, United Kingdom; Cardiff University Brain Research Imaging Centre, School of Psychology, Wales, United Kingdom; Central Biotechnology Services, TIME Institute, Wales, United Kingdom. Electronic address: foleys2@cardiff.ac.uk.
Katherine E TanseyCardiff University Medical Research Council Centre for Neuropsychiatric Genetics and Genomics, Wales, United Kingdom; Medical Research Council Integrative Epidemiology Unit, School of Social and Community Medicine, Faculty of Medicine & Dentistry, University of Bristol, Bristol, United Kingdom.
Xavier CaserasCardiff University Medical Research Council Centre for Neuropsychiatric Genetics and Genomics, Wales, United Kingdom; Cardiff University Brain Research Imaging Centre, School of Psychology, Wales, United Kingdom.
Thomas LancasterCardiff University Medical Research Council Centre for Neuropsychiatric Genetics and Genomics, Wales, United Kingdom; Cardiff University Brain Research Imaging Centre, School of Psychology, Wales, United Kingdom.
Tobias BrachtCardiff University Brain Research Imaging Centre, School of Psychology, Wales, United Kingdom.
Greg ParkerCardiff University Brain Research Imaging Centre, School of Psychology, Wales, United Kingdom.
Jeremy HallCardiff University Medical Research Council Centre for Neuropsychiatric Genetics and Genomics, Wales, United Kingdom; Neuroscience and Mental Health Research Institute, Wales, United Kingdom.
Julie WilliamsCardiff University Medical Research Council Centre for Neuropsychiatric Genetics and Genomics, Wales, United Kingdom.
David E J LindenCardiff University Medical Research Council Centre for Neuropsychiatric Genetics and Genomics, Wales, United Kingdom; Cardiff University Brain Research Imaging Centre, School of Psychology, Wales, United Kingdom.
Cardiff University · GBMedical Research Council · GB

Funding

Medical Research Council G0300429Medical Research Council G0800509Medical Research Council G0902227Medical Research Council MR/K004360/1Medical Research Council MR/K013041/1Medical Research Council MR/L010305/1Medical Research Council MR/L023784/1Medical Research Council MR/L023784/2Medical Research Council MR/L501517/1Wellcome Trust
6 · The paper itself

Abstract

backgroundRecent genome-wide association studies have identified genetic loci that jointly make a considerable contribution to risk of developing Alzheimer's disease (AD). Because neuropathological features of AD can be present several decades before disease onset, we investigated whether effects of polygenic risk are detectable by neuroimaging in young adults. We hypothesized that higher polygenic risk scores (PRSs) for AD would be associated with reduced volume of the hippocampus and other limbic and paralimbic areas. We further hypothesized that AD PRSs would affect the microstructure of fiber tracts connecting the hippocampus with other brain areas.

methodsWe analyzed the association between AD PRSs and brain imaging parameters using T1-weighted structural (n = 272) and diffusion-weighted scans (n = 197).

resultsWe found a significant association between AD PRSs and left hippocampal volume, with higher risk associated with lower left hippocampal volume (p = .001). This effect remained when the APOE gene was excluded (p = .031), suggesting that the relationship between hippocampal volume and AD is the result of multiple genetic factors and not exclusively variability in the APOE gene. The diffusion tensor imaging analysis revealed that fractional anisotropy of the right cingulum was inversely correlated with AD PRSs (p = .009). We thus show that polygenic effects of AD risk variants on brain structure can already be detected in young adults.

conclusionsThis finding paves the way for further investigation of the effects of AD risk variants and may become useful for efforts to combine genotypic and phenotypic data for risk prediction and to enrich future prevention trials of AD.

Indexed as

Genetic Predisposition to DiseaseMultifactorial InheritanceMultimodal ImagingAdultAlzheimer DiseaseApolipoproteins EDiffusion Tensor ImagingEntorhinal CortexFemaleFornix, BrainGyrus CinguliHippocampusHumansMagnetic Resonance ImagingMaleParahippocampal GyrusApoE protein, humanApolipoproteins EAlzheimer’s diseaseCingulumFornixHippocampusImagingPolygenic risk

Identifiers

PMID27157680
PMCPMC5177726
OpenAlexW2300754229

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.