Evidence map›Paper›PMID 22503634›Full record

ArticleAmerican journal of human genetics2012

Genetic adaptation of fatty-acid metabolism: a human-specific haplotype increasing the biosynthesis of long-chain omega-3 and omega-6 fatty acids.

Adam Ameur, Stefan Enroth, Asa Johansson, Ghazal Zaboli, Wilmar Igl, Anna C V Johansson, Manuel A Rivas, Mark J Daly, Gerd Schmitz, Andrew A Hicks and 10 more

Open access · bronzeAbstract read
In one paragraph

Article in American journal of human genetics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 123 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
123citing papers in PubMed, 4 pooled it
6.3field-weighted citation impact, top 3% 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

123 citing papers in PubMed, 4 syntheses or guidelines pooled it, 267 citations in OpenAlex.

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  12. Polyunsaturated fatty acid metabolism in the retinal pigment epithelium and its association with outer retinal disease.Mammalian genome : official journal of the International Mammalian Genome Society · 2026
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63 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

20 authors at 10 institutions in 7 countries.

Adam AmeurDepartment of Immunology, Genetics and Pathology, SciLifeLab Uppsala, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden.
Stefan Enroth
Asa Johansson
Ghazal Zaboli
Wilmar Igl
Anna C V Johansson
Manuel A Rivas
Mark J Daly
Gerd Schmitz
Andrew A Hicks
Thomas Meitinger
Lars Feuk
Cornelia van Duijn
Ben Oostra
Peter P Pramstaller
Igor Rudan
Alan F Wright
James F Wilson
Harry Campbell
Ulf Gyllensten
Science for Life Laboratory · SEErasmus MC · NLEurac Research · ITMassachusetts General Hospital · USUniversity of Edinburgh · GBUppsala University · SEHelmholtz Zentrum München · DEMRC Institute of Genetics and Molecular Medicine · GBUniversity Hospital Regensburg · DEUniversity of Split · HR

Funding

Chief Scientist Office CZB/4/710Medical Research Council MC_PC_U127561128Medical Research Council MC_U127561128
6 · The paper itself

Abstract

Omega-3 and omega-6 long-chain polyunsaturated fatty acids (LC-PUFAs) are essential for the development and function of the human brain. They can be obtained directly from food, e.g., fish, or synthesized from precursor molecules found in vegetable oils. To determine the importance of genetic variability to fatty-acid biosynthesis, we studied FADS1 and FADS2, which encode rate-limiting enzymes for fatty-acid conversion. We performed genome-wide genotyping (n = 5,652 individuals) and targeted resequencing (n = 960 individuals) of the FADS region in five European population cohorts. We also analyzed available genomic data from human populations, archaic hominins, and more distant primates. Our results show that present-day humans have two common FADS haplotypes-defined by 28 closely linked SNPs across 38.9 kb-that differ dramatically in their ability to generate LC-PUFAs. No independent effects on FADS activity were seen for rare SNPs detected by targeted resequencing. The more efficient, evolutionarily derived haplotype appeared after the lineage split leading to modern humans and Neanderthals and shows evidence of positive selection. This human-specific haplotype increases the efficiency of synthesizing essential long-chain fatty acids from precursors and thereby might have provided an advantage in environments with limited access to dietary LC-PUFAs. In the modern world, this haplotype has been associated with lifestyle-related diseases, such as coronary artery disease.

Indexed as

HaplotypesAdaptation, PhysiologicalAmino Acid SequenceAnimalsCroatiaCross-Sectional StudiesDelta-5 Fatty Acid DesaturaseDietFatty Acid DesaturasesFatty Acids, Omega-3Fatty Acids, Omega-6HumansItalyLife StyleMolecular Sequence DataMultigene FamilyDelta-5 Fatty Acid DesaturaseFADS1 protein, humanFADS2 protein, humanFatty Acid DesaturasesFatty Acids, Omega-3Fatty Acids, Omega-6

Identifiers

PMID22503634
PMCPMC3376635
OpenAlexW2089555306

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.