Evidence map›Paper›PMID 29991368›Full record

ArticleInternational psychogeriatrics2019

Environmental factors influencing the link between APOE ε4 and Alzheimer's disease (AD) risk.

Keith Fluegge

Open access · diamondAbstract readLetterComment
PubMed Publisher
In one paragraph

Article in International psychogeriatrics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.5field-weighted citation impact, top 35% 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

6 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Down syndrome in Africa: Challenges, opportunities, and future directions.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  3. Article
  4. Article
  5. Dementia in Africa: Current evidence, knowledge gaps, and future directions.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2022
    Review
  6. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Keith FlueggeInstitute of Health and Environmental Research,Cleveland,Ohio,USA.ORCID 0000-0003-3866-9781
Cleveland Research (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

While APOE ε4 allele is considered a genetic risk factor for Alzheimer's disease (AD), no relation existed between APOE ε4 and AD in the Yoruba in Nigeria among cohorts included in early prevalence waves. The authors' explanation that other disease susceptibilities may provoke earlier mortality is inconsistent with the Yoruba having a lower incidence of disease risk factors. Cohort enrichment in 2001 has altered the authors' conclusions; Yorba participants homozygous, and not heterozygous, for the ε4 allele had significantly increased risk for AD (HR = 2.95, p = 0.0002) (Hendrie et al., 2014). This is a critical revelation, yet it is not clear why such a temporal relationship exists between risk genotypes and AD among the Yoruba. This letter proposes an explanation.

Indexed as

Cognitive DysfunctionAllelesAlzheimer DiseaseApolipoprotein E4Black or African AmericanHumansNigeriaRisk FactorsApolipoprotein E4

Identifiers

PMID29991368
OpenAlexW2862313811

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.