Evidence map›Paper›PMID 25328845›Full record

ArticleBrain and behavior2014

Validation of a polygenic risk score for dementia in black and white individuals.

Jessica R Marden, Stefan Walter, Eric J Tchetgen Tchetgen, Ichiro Kawachi, M Maria Glymour

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Brain and behavior, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04426539 (New IDEAS), which is not on this map. Cited by 42 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 2 pooled it
3.1field-weighted citation impact, top 9% 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.

NCT04426539 completednot on this mapstarted 2020, after this paper: background citation

New IDEAS: Imaging Dementia-Evidence for Amyloid Scanning Study - A Study to Improve Precision in Amyloid PET Coverage and Patient Care

Typeobservational_patient_registrySponsorAmerican College of RadiologyRan2020 to 2024Enrolled6,061ConditionsAlzheimer's Disease, Dementia, Mild Cognitive Impairment
3 · Its place in the literature

Who cites it

42 citing papers in PubMed, 2 syntheses or guidelines pooled it, 83 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

5 authors at 2 institutions in 1 country.

Jessica R MardenDepartment of Social and Behavioral Sciences, Harvard School of Public Health 677 Huntington Ave, Boston, Massachusetts, 02115.
Stefan WalterDepartment of Social and Behavioral Sciences, Harvard School of Public Health 677 Huntington Ave, Boston, Massachusetts, 02115 ; Department of Epidemiology and Biostatistics, University of California at San Francisco San Francisco, California.
Eric J Tchetgen TchetgenDepartment of Biostatistics, Harvard School of Public Health 677 Huntington Ave, Boston, Massachusetts, 02115 ; Department of Epidemiology, Harvard School of Public Health 677 Huntington Ave, Boston, Massachusetts, 02115.
Ichiro KawachiDepartment of Social and Behavioral Sciences, Harvard School of Public Health 677 Huntington Ave, Boston, Massachusetts, 02115.
M Maria GlymourDepartment of Social and Behavioral Sciences, Harvard School of Public Health 677 Huntington Ave, Boston, Massachusetts, 02115 ; Department of Epidemiology and Biostatistics, University of California at San Francisco San Francisco, California.
Harvard University · USUniversity of California, San Francisco · US

Funding

Training in Neurostatistics and NeuroepidemiologyT32NS048005 · NINDS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI ONNELA, JUKKA-PEKKA · 2004 to 2018
$3.2M
Identification and Inference for Longitudinal Causal Mediation Analysis in HIVR01AI104459 · NIAID · HARVARD SCHOOL OF PUBLIC HEALTH · PI SHPITSER, ILYA, VANDERWEELE, TYLER · 2013 to 2017
$2.0M
Semiparametric Methods for Gene-environment InteractionR01ES020337 · NIEHS · HARVARD SCHOOL OF PUBLIC HEALTH · PI TCHETGEN TCHETGEN, ERIC JOEL · 2012 to 2015
$1.4M
NIAID NIH HHS R01 AI104459NIA NIH HHS AG03438501NIEHS NIH HHS R01 ES020337NINDS NIH HHS T32 NS048005
6 · The paper itself

Abstract

objectiveTo determine whether a polygenic risk score for Alzheimer's disease (AD) predicts dementia probability and memory functioning in non-Hispanic black (NHB) and non-Hispanic white (NHW) participants from a sample not used in previous genome-wide association studies.

methodsNon-Hispanic white and NHB Health and Retirement Study (HRS) participants provided genetic information and either a composite memory score (n = 10,401) or a dementia probability score (n = 7690). Dementia probability score was estimated for participants' age 65+ from 2006 to 2010, while memory score was available for participants age 50+. We calculated AD genetic risk scores (AD-GRS) based on 10 polymorphisms confirmed to predict AD, weighting alleles by beta coefficients reported in AlzGene meta-analyses. We used pooled logistic regression to estimate the association of the AD-GRS with dementia probability and generalized linear models to estimate its effect on memory score.

resultsEach 0.10 unit change in the AD-GRS was associated with larger relative effects on dementia among NHW aged 65+ (OR = 2.22; 95% CI: 1.79, 2.74; P < 0.001) than NHB (OR=1.33; 95% CI: 1.00, 1.77; P = 0.047), although additive effect estimates were similar. Each 0.10 unit change in the AD-GRS was associated with a -0.07 (95% CI: -0.09, -0.05; P < 0.001) SD difference in memory score among NHW aged 50+, but no significant differences among NHB (β = -0.01; 95% CI: -0.04, 0.01; P = 0.546). [Correction added on 29 July 2014, after first online publication: confidence intervalshave been amended.] The estimated effect of the GRS was significantly smaller among NHB than NHW (P < 0.05) for both outcomes.

conclusionThis analysis provides evidence for differential relative effects of the GRS on dementia probability and memory score among NHW and NHB in a new, national data set.

Indexed as

AgedAged, 80 and overBlack or African AmericanDementiaFemaleHumansMaleMiddle AgedMultifactorial InheritancePolymorphism, GeneticReproducibility of ResultsRisk AssessmentRisk FactorsSurveys and QuestionnairesUnited StatesWhite PeopleDementiageneticsrace

Identifiers

PMID25328845
PMCPMC4107377
OpenAlexW2028466261

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.