Evidence map›Paper›PMID 30521541›Full record

ArticlePloS one2018

The impact of a fine-scale population stratification on rare variant association test results.

Elodie Persyn, Richard Redon, Lise Bellanger, Christian Dina

Abstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
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

23 citing papers in PubMed.

  1. BeyondFrontiers in genetics · 2026
    Review
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  5. Appraisal of the causal effect ofmedRxiv : the preprint server for health sciences · 2024
    Article
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  7. Article
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  11. Review
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  19. The genetic history of France.European journal of human genetics : EJHG · 2020
    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

4 authors.

Elodie PersynINSERM, CNRS, UNIV Nantes, l'institut du thorax, Nantes, France.ORCID 0000-0001-9104-1972
Richard RedonINSERM, CNRS, UNIV Nantes, l'institut du thorax, Nantes, France.
Lise BellangerLaboratoire de Mathématiques Jean Leray, Nantes, France.
Christian DinaINSERM, CNRS, UNIV Nantes, l'institut du thorax, Nantes, France.ORCID 0000-0002-7722-7348

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Population stratification is a well-known confounding factor in both common and rare variant association analyses. Rare variants tend to be more geographically clustered than common variants, because of their more recent origin. However, it is not yet clear if population stratification at a very fine scale (neighboring administrative regions within a country) would lead to statistical bias in rare variant analyses. As the inclusion of convenience controls from external studies is indeed a common procedure, in order to increase the power to detect genetic associations, this problem is important. We studied through simulation the impact of a fine scale population structure on different rare variant association strategies, assessing type I error and power. We showed that principal component analysis (PCA) based methods of adjustment for population stratification adequately corrected type I error inflation at the largest geographical scales, but not at finest scales. We also showed in our simulations that adding controls obviously increased power, but at a considerably lower level when controls were drawn from another population.

Indexed as

Genetic VariationBiasComputer SimulationGene FrequencyGenetic Association StudiesGenetic Predisposition to DiseaseGenetics, PopulationHuman MigrationHumansModels, GeneticPolymorphism, Single NucleotidePopulation GroupsPrincipal Component Analysis

Identifiers

PMID30521541
PMCPMC6283567

What Socratic holds

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LicenceCC BY
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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 Socratic graph.