Evidence map›Paper›PMID 15145993›Full record

ArticleJournal of neurology, neurosurgery, and psychiatry2004

Risk and protective effects of the APOE gene towards Alzheimer's disease in the Kungsholmen project: variation by age and sex.

C Qiu, M Kivipelto, H Agüero-Torres, B Winblad, L Fratiglioni

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of neurology, neurosurgery, and psychiatry, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 2 pooled it
20.1field-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

37 citing papers in PubMed, 2 syntheses or guidelines pooled it, 111 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Article
  4. Racial and ethnic differences in plasma biomarker eligibility for a preclinical Alzheimer's disease trial.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
  5. Review
  6. Article
  7. Article
  8. Observational
  9. Article
  10. Incidence of dementia after age 90 in a multiracial cohort.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2019
    Article
  11. Article
  12. Article
  13. Age stratification corrects bias in estimated hazard ofAlzheimer's & dementia (New York, N. Y.) · 2018
    Article
  14. Article
  15. Article
  16. Article
  17. Age, APOE and sex: Triad of risk of Alzheimer's disease.The Journal of steroid biochemistry and molecular biology · 2016
    Review
  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 1 institution in 1 country.

C QiuAgeing Research Centre, Division of Geriatric Epidemiology and Medicine, Department of Neurotec, Karolinska Institutet and the Stockholm Gerontology Research Centre, Stockholm, Sweden. chengxuan.qui@neurotec.ki.se
M Kivipelto
H Agüero-Torres
B Winblad
L Fratiglioni
Karolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe risk effect of APOE epsilon 4 allele for Alzheimer's disease is acknowledged, whereas the putative protective effect of epsilon 2 allele remains in debate.

objectivesTo investigate whether those inconsistent findings may be attributable to differences in age and sex composition of the study populations.

methodsA community dementia free cohort (n = 985) aged > or =75 years was followed up to detect Alzheimer's disease cases (DSM-III-R criteria). Data were analysed using Cox models with adjustment for major potential confounders.

resultsOver a median 5.6 year follow up, Alzheimer's disease was diagnosed in 206 subjects. Compared with APOE epsilon 3/epsilon 3 genotype, the relative risk (RR) of Alzheimer's disease was 1.4 (95% confidence interval (CI), 1.0 to 2.0; p = 0.03) for heterozygous epsilon 4 allele and 3.1 (95% CI, 1.6 to 5.9) for homozygous epsilon 4 allele. The association between epsilon 4 allele and Alzheimer's disease risk was stronger in men than in women (RR related to the interaction term epsilon 4 allele by sex, 0.4; 95% CI, 0.2 to 0.9). The epsilon 4 allele accounted for one third of Alzheimer's disease cases among men, but only one tenth among women. The epsilon 2 allele was related to a reduced Alzheimer's disease risk mainly in people aged <85 years (RR, 0.4; 95% CI, 0.2 to 0.8). The RR of Alzheimer's disease related to the interaction term of epsilon 2 allele by age was 2.4 (95% CI, 1.0 to 6.0; p = 0.06).

conclusionsThe APOE genotype specific effects on Alzheimer's disease vary by age and sex, in which the epsilon 4 allele has a stronger risk effect in men, and the epsilon 2 allele confers a protective effect only in younger-old people.

Indexed as

AgedAged, 80 and overAge FactorsAlzheimer DiseaseApolipoprotein E2Apolipoproteins ECohort StudiesFemaleFollow-Up StudiesGenetic Predisposition to DiseaseGenetic TestingGenetic VariationGenotypeHumansMaleProportional Hazards ModelsApolipoprotein E2Apolipoproteins E

Identifiers

PMID15145993
PMCPMC1739059
OpenAlexW2005010859

What OpenQuestion holds

Textmetadata
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.