Evidence map›Paper›PMID 21552550›Full record

ArticlePloS one2011

Apolipoprotein E4 frequencies in a Japanese population with Alzheimer's disease and dementia with Lewy bodies.

Seiju Kobayashi, Masaru Tateno, Tae Woo Park, Kumiko Utsumi, Hitoshi Sohma, Yoichi M Ito, Yasuo Kokai, Toshikazu Saito

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

18 citing papers in PubMed, 49 citations in OpenAlex.

  1. Article
  2. Review
  3. Advancements in APOE and dementia research: Highlights from the 2023 AAIC Advancements: APOE conference.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Review
  4. Article
  5. Apolipoprotein E Gene in α-Synucleinopathies: A Narrative Review.International journal of molecular sciences · 2024
    Review
  6. Article
  7. Review
  8. Review
  9. Article
  10. Influence ofPharmacogenomics and personalized medicine · 2019
    Article
  11. Article
  12. MAPT haplotype H1G is associated with increased risk of dementia with Lewy bodies.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2016
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. 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

8 authors at 3 institutions in 1 country.

Seiju KobayashiDepartment of Neuropsychiatry, Sapporo Medical University School of Medicine, Sapporo, Japan. seij@pastel.ocn.ne.jp
Masaru Tateno
Tae Woo Park
Kumiko Utsumi
Hitoshi Sohma
Yoichi M Ito
Yasuo Kokai
Toshikazu Saito
Sapporo Medical University · JPHokkaido University · JPSunagawa City Medical Center · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe apolipoprotein E (APOE) ε4 allele has been reported to be a risk factor for Alzheimer's disease (AD) and dementia with Lewy bodies (DLB). Previous neuropathological studies have demonstrated similar frequencies of the APOE ε4 allele in AD and DLB. However, the few ante-mortem studies on APOE allele frequencies in DLB have shown lower frequencies than post-mortem studies. One reason for this may be inaccuracy of diagnosis. We examined APOE genotypes in subjects with AD, DLB, and a control group using the latest diagnostic criteria and MRI, SPECT, and MIBG myocardial scintigraphy.

methodsThe subjects of this study consisted of 145 patients with probable AD, 50 subjects with probable DLB, and a control group. AD subjects were divided into two groups based on age of onset: early onset AD (EOAD) and late onset AD (LOAD). All subjects had characteristic features on MRI, SPECT, and/or myocardial scintigraphy.

resultsThe rate of APOE4 carrier status was 18.3% and the frequency of the ε4 allele was 9.7% in controls. The rate of APOE4 carrier status and the frequency of the ε4 allele were 47% and 27% for LOAD, 50% and 31% for EOAD, and 42% and 31% for DLB, respectively.

conclusionThe APOE4 genotypes in this study are consistent with previous neuropathological studies suggesting accurate diagnosis of AD and DLB. APOE4 genotypes were similar in AD and DLB, giving further evidence that the ε4 allele is a risk factor for both disorders.

Indexed as

Gene FrequencyAgedAlzheimer DiseaseApolipoprotein E4Asian PeopleCase-Control StudiesFemaleGenotypeHumansJapanLewy Body DiseaseMaleMiddle AgedApolipoprotein E4

Identifiers

PMID21552550
PMCPMC3084234
OpenAlexW1996825174

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.