Evidence map›Paper›PMID 21244673›Full record

ArticleBMC medical genetics2011

Testing the thrifty gene hypothesis: the Gly482Ser variant in PPARGC1A is associated with BMI in Tongans.

Sean Myles, Rod A Lea, Jun Ohashi, Geoff K Chambers, Joerg G Weiss, Emilie Hardouin, Johannes Engelken, Donia P Macartney-Coxson, David A Eccles, Izumi Naka and 4 more

Open access · goldAbstract read
In one paragraph

Article in BMC medical genetics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 3 pooled it
5.2field-weighted citation impact, top 5% 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

24 citing papers in PubMed, 3 syntheses or guidelines pooled it, 60 citations in OpenAlex.

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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

14 authors at 9 institutions in 6 countries.

Sean MylesInstitute for Genomic Diversity, Cornell University, Ithaca, NY, USA. smm367@cornell.edu
Rod A Lea
Jun Ohashi
Geoff K Chambers
Joerg G Weiss
Emilie Hardouin
Johannes Engelken
Donia P Macartney-Coxson
David A Eccles
Izumi Naka
Ryosuke Kimura
Tsukasa Inaoka
Yasuhiro Matsumura
Mark Stoneking
Max Planck Institute for Evolutionary Anthropology · DENew Zealand Institute for Public Health and Forensic Science · NZUniversity of Tsukuba · JPVictoria University of Wellington · NZAcadia University · CACornell University · USKiryu University · JPSaga University · JPUniversity of the Ryukyus · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundthe thrifty gene hypothesis posits that, in populations that experienced periods of feast and famine, natural selection favoured individuals carrying thrifty alleles that promote the storage of fat and energy. Polynesians likely experienced long periods of cold stress and starvation during their settlement of the Pacific and today have high rates of obesity and type 2 diabetes (T2DM), possibly due to past positive selection for thrifty alleles. Alternatively, T2DM risk alleles may simply have drifted to high frequency in Polynesians. To identify thrifty alleles in Polynesians, we previously examined evidence of positive selection on T2DM-associated SNPs and identified a T2DM risk allele at unusually high frequency in Polynesians. We suggested that the risk allele of the Gly482Ser variant in the PPARGC1A gene was driven to high frequency in Polynesians by positive selection and therefore possibly represented a thrifty allele in the Pacific.

methodshere we examine whether PPARGC1A is a thrifty gene in Pacific populations by testing for an association between Gly482Ser genotypes and BMI in two Pacific populations (Maori and Tongans) and by evaluating the frequency of the risk allele of the Gly482Ser variant in a sample of worldwide populations.

resultswe find that the Gly482Ser variant is associated with BMI in Tongans but not in Maori. In a sample of 58 populations worldwide, we also show that the 482Ser risk allele reaches its highest frequency in the Pacific.

conclusionthe association between Gly482Ser genotypes and BMI in Tongans together with the worldwide frequency distribution of the Gly482Ser risk allele suggests that PPARGC1A remains a candidate thrifty gene in Pacific populations.

Indexed as

Body Mass IndexAdultAgedCohort StudiesDiabetes Mellitus, Type 2FemaleGene FrequencyGenetic Association StudiesGenetic Predisposition to DiseaseHeat-Shock ProteinsHumansMaleMiddle AgedPeroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alphaTongaTranscription FactorsHeat-Shock ProteinsPeroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alphaPPARGC1A protein, humanTranscription Factors

Identifiers

PMID21244673
PMCPMC3025936
OpenAlexW2092791760

What OpenQuestion holds

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Registered trials

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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.