Evidence map›Paper›PMID 35169705›Full record

ArticleBrain communications2022

Measuring heritable contributions to Alzheimer's disease: polygenic risk score analysis with twins.

Ida K Karlsson, Valentina Escott-Price, Margaret Gatz, John Hardy, Nancy L Pedersen, Maryam Shoai, Chandra A Reynolds

Open access · goldAbstract read
In one paragraph

Article in Brain communications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 2 pooled it
9.7field-weighted citation impact, top 1% 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

65 citing papers in PubMed, 2 syntheses or guidelines pooled it, 93 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. Cross-ancestry polygenic risk scores enhance Alzheimer's disease risk prediction in multiethnic cohorts.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  7. The Interplay of Genes and Environment Across Multiple Studies (IGEMS) Consortium After Fifteen Years.Twin research and human genetics : the official journal of the International Society for Twin Studies · 2026
    Article
  8. Article
  9. Article
  10. Review
  11. Unravelling the genetic architecture of cerebral small vessel disease in the context of stroke.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2026
    Review
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Dissecting Alzheimer's disease heritability across populations.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  18. Article
  19. Genetic risk in Alzheimer's disease.NPJ systems biology and applications · 2026
    Review
  20. Review

5 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

7 authors at 5 institutions in 5 countries.

Ida K KarlssonDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Valentina Escott-PriceUK Dementia Research Institute at Cardiff, Institute of Psychological Medicine and Clinical Neurosciences, Cardiff University, Cardiff, UK.ORCID https://orcid.org/0000-0003-1784-5483
Margaret GatzDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.ORCID https://orcid.org/0000-0002-1071-9970
John HardyDepartment of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, Queen Square, London WC1N 3BG, UK.
Nancy L PedersenDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Maryam ShoaiDepartment of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, Queen Square, London WC1N 3BG, UK.
Chandra A ReynoldsDepartment of Psychology, University of California-Riverside, Riverside, CA, USA.ORCID https://orcid.org/0000-0001-6502-7173
UK Dementia Research Institute · GBUniversity of Southern California · USHong Kong University of Science and Technology · HKKarolinska Institutet · SEUniversity of California, Riverside · US

Funding

Sex differences in the relationship between APOE and AD: Role of sexual differentiationRF1AG058068 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI GATZ, MARGARET, LADU, MARY JO · 2017 to 2017
$3.8M
Clarifying risk and protective factors for dementia with the Interplay of Genes and Environment in Multiple Studies (IGEMS) consortiumR01AG060470 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI GATZ, MARGARET, PEDERSEN, NANCY L · 2018 to 2022
$3.6M
DEMENTIA IN TWINSR01AG008724 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI GATZ, MARGARET · 1990 to 2002
$1.4M
Cholesterol metabolism pathway: Cognitive change and Alzheimer's disease riskR01AG028555 · NIA · UNIVERSITY OF CALIFORNIA RIVERSIDE · PI REYNOLDS, CHANDRA A · 2007 to 2010
$1.1M
COGNITIVE DECLINE AND THE ROLE OF SPICIFIC GENESR01AG017561 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI REYNOLDS, CHANDRA A · 1999 to 2000
$96k
Medical Research Council G0701075Medical Research Council G0801418Medical Research Council G0901254Medical Research Council G1001253Medical Research Council MR/J004758/1Medical Research Council MR/K01417X/1Medical Research Council MR/L010305/1Medical Research Council MR/L023784/2Medical Research Council MR/L501542/1Medical Research Council MR/P005748/1Medical Research Council MR/T033371/1Medical Research Council MR/T04604X/1NIA NIH HHS R01 AG008724NIA NIH HHS R01 AG017561NIA NIH HHS R01 AG028555NIA NIH HHS R01 AG060470NIA NIH HHS RF1 AG058068Parkinson's UK G-0907Parkinson's UK G-1307
6 · The paper itself

Abstract

The heritability of Alzheimer's disease estimated from twin studies is greater than the heritability derived from genome-based studies, for reasons that remain unclear. We apply both approaches to the same twin sample, considering both Alzheimer's disease polygenic risk scores and heritability from twin models, to provide insight into the role of measured genetic variants and to quantify uncaptured genetic risk. A population-based heritability and polygenic association study of Alzheimer's disease was conducted between 1986 and 2016 and is the first study to incorporate polygenic risk scores into biometrical twin models of Alzheimer's disease. The sample included 1586 twins drawn from the Swedish Twin Registry which were nested within 1137 twin pairs (449 complete pairs and 688 incomplete pairs) with clinically based diagnoses and registry follow-up (

Indexed as

Alzheimer’s diseaseAPOEheritabilitypolygenic risk scores (PRSs)twins

Identifiers

PMID35169705
PMCPMC8833403
OpenAlexW4206038508

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.