Evidence map›Paper›PMID 18172690›Full record

ArticleHuman genetics2008

Blue eye color in humans may be caused by a perfectly associated founder mutation in a regulatory element located within the HERC2 gene inhibiting OCA2 expression.

Hans Eiberg, Jesper Troelsen, Mette Nielsen, Annemette Mikkelsen, Jonas Mengel-From, Klaus W Kjaer, Lars Hansen

Abstract read
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In one paragraph

Article in Human genetics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 136 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
136citing papers in PubMed, 4 pooled it
8.6field-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

136 citing papers in PubMed, 4 syntheses or guidelines pooled it, 348 citations in OpenAlex.

  1. Pooled it
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  3. Pooled it
  4. Pooled it
  5. Observational
  6. Article
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  14. Review
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  20. Identification of Polymorphisms in theThe journal of poultry science · 2023
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76 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

7 authors at 1 institution in 1 country.

Hans EibergDepartment of Cellular and Molecular Medicine, Section IV Build. 24.4, Panum Institute, University of Copenhagen, Blegdamsvej 3b, 2200, Copenhagen, Denmark. he@imbg.ku.dk
Jesper Troelsen
Mette Nielsen
Annemette Mikkelsen
Jonas Mengel-From
Klaus W Kjaer
Lars Hansen
University of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The human eye color is a quantitative trait displaying multifactorial inheritance. Several studies have shown that the OCA2 locus is the major contributor to the human eye color variation. By linkage analysis of a large Danish family, we finemapped the blue eye color locus to a 166 Kbp region within the HERC2 gene. By association analyses, we identified two SNPs within this region that were perfectly associated with the blue and brown eye colors: rs12913832 and rs1129038. Of these, rs12913832 is located 21.152 bp upstream from the OCA2 promoter in a highly conserved sequence in intron 86 of HERC2. The brown eye color allele of rs12913832 is highly conserved throughout a number of species. As shown by a Luciferase assays in cell cultures, the element significantly reduces the activity of the OCA2 promoter and electrophoretic mobility shift assays demonstrate that the two alleles bind different subsets of nuclear extracts. One single haplotype, represented by six polymorphic SNPs covering half of the 3' end of the HERC2 gene, was found in 155 blue-eyed individuals from Denmark, and in 5 and 2 blue-eyed individuals from Turkey and Jordan, respectively. Hence, our data suggest a common founder mutation in an OCA2 inhibiting regulatory element as the cause of blue eye color in humans. In addition, an LOD score of Z = 4.21 between hair color and D14S72 was obtained in the large family, indicating that RABGGTA is a candidate gene for hair color.

Indexed as

Founder EffectAdultAllelesCells, CulturedChromosomes, Human, Pair 15DenmarkEye ColorFemaleGene Expression RegulationGenetic LinkageGenotypeGuanine Nucleotide Exchange FactorsHair ColorHaplotypesHumansLod ScoreGuanine Nucleotide Exchange FactorsHERC2 protein, humanLuciferasesMembrane Transport ProteinsOCA2 protein, humanUbiquitin-Protein Ligases

Identifiers

PMID18172690
OpenAlexW2103578460

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.