Evidence map›Paper›PMID 23236293›Full record

ArticlePLoS genetics2012

The genetic architecture of adaptations to high altitude in Ethiopia.

Gorka Alkorta-Aranburu, Cynthia M Beall, David B Witonsky, Amha Gebremedhin, Jonathan K Pritchard, Anna Di Rienzo

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 121 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
121citing papers in PubMed, 2 pooled it
9.5field-weighted citation impact, top 2% 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

121 citing papers in PubMed, 2 syntheses or guidelines pooled it, 207 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Review
  5. Review
  6. Article
  7. Exploring the genetic footprints of high altitude adapted humans and livestock.Mammalian genome : official journal of the International Mammalian Genome Society · 2025
    Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Advances in Understanding Adaptive Hemoglobin Concentration at High Altitude.American journal of human biology : the official journal of the Human Biology Council · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. FunctionalScience advances · 2024
    Article
  19. Article
  20. Review

61 more citing papers are in PubMed but not listed here.

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

6 authors at 3 institutions in 2 countries.

Gorka Alkorta-AranburuDepartment of Human Genetics, University of Chicago, Chicago, Illinois, United States of America.
Cynthia M Beall
David B Witonsky
Amha Gebremedhin
Jonathan K Pritchard
Anna Di Rienzo
University of Chicago · USAddis Ababa University · ETHoward Hughes Medical Institute · US

Funding

Local Adaptations in HumansR01GM079558 · NIGMS · UNIVERSITY OF CHICAGO · PI DI RIENZO, ANNA · 2007 to 2010
$1.2M
NIGMS NIH HHS GM79558NIGMS NIH HHS GM79558-S1NIGMS NIH HHS R01 GM079558
6 · The paper itself

Abstract

Although hypoxia is a major stress on physiological processes, several human populations have survived for millennia at high altitudes, suggesting that they have adapted to hypoxic conditions. This hypothesis was recently corroborated by studies of Tibetan highlanders, which showed that polymorphisms in candidate genes show signatures of natural selection as well as well-replicated association signals for variation in hemoglobin levels. We extended genomic analysis to two Ethiopian ethnic groups: Amhara and Oromo. For each ethnic group, we sampled low and high altitude residents, thus allowing genetic and phenotypic comparisons across altitudes and across ethnic groups. Genome-wide SNP genotype data were collected in these samples by using Illumina arrays. We find that variants associated with hemoglobin variation among Tibetans or other variants at the same loci do not influence the trait in Ethiopians. However, in the Amhara, SNP rs10803083 is associated with hemoglobin levels at genome-wide levels of significance. No significant genotype association was observed for oxygen saturation levels in either ethnic group. Approaches based on allele frequency divergence did not detect outliers in candidate hypoxia genes, but the most differentiated variants between high- and lowlanders have a clear role in pathogen defense. Interestingly, a significant excess of allele frequency divergence was consistently detected for genes involved in cell cycle control and DNA damage and repair, thus pointing to new pathways for high altitude adaptations. Finally, a comparison of CpG methylation levels between high- and lowlanders found several significant signals at individual genes in the Oromo.

Indexed as

Adaptation, PhysiologicalGenome-Wide Association StudyHypoxiaAcclimatizationAltitudeAltitude SicknessCpG IslandsDNA MethylationEthiopiaEthnicityGene FrequencyHemoglobinsHumansPolymorphism, Single NucleotideSelection, GeneticHemoglobins

Identifiers

PMID23236293
PMCPMC3516565
OpenAlexW2156356576

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.