Evidence map›Paper›PMID 22607059›Full record

ArticleAnnals of human genetics2012

Molecular and population analysis of natural selection on the human haptoglobin duplication.

Santiago Rodriguez, Dylan M Williams, Philip A I Guthrie, Wendy L McArdle, George Davey Smith, David M Evans, Tom R Gaunt, Ian N M Day

Open access · bronzeAbstract read
In one paragraph

Article in Annals of human genetics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 30% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Relationship between time-varying achieved HbABMJ open diabetes research & care · 2025
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. 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

8 authors at 1 institution in 1 country.

Santiago RodriguezMRC Centre for Causal Analyses in Translational Epidemiology (CAiTE) Bristol Genetic Epidemiology Laboratories (BGEL), School of Social and Community Medicine, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, United Kingdom. santi.rodriguez@bristol.ac.uk
Dylan M Williams
Philip A I Guthrie
Wendy L McArdle
George Davey Smith
David M Evans
Tom R Gaunt
Ian N M Day
University of Bristol · GB

Funding

Medical Research Council 74882Medical Research Council G0600705Medical Research Council G9815508Wellcome Trust 076467Wellcome Trust 092731Wellcome Trust WT083431MA
6 · The paper itself

Abstract

Haptoglobin binds free haemoglobin that prevents oxidative damage produced by haemolysis. There is a copy number variant (CNV) in the haptoglobin gene (HP) consisting of two alleles, Hp1 (no duplication), and Hp2 (1.7kb duplication involving two exons). The spread of the Hp2 allele is believed to have taken place under selective pressures conferred by malaria resistance. However, molecular evidence is lacking and Hp did not emerge in genomewide SNPs surveys for evidence of selection. In Europe, there is geographical constancy of Hp2 frequency, indicative of absence of clinal pressures and that modern day European alleles represent a "snapshot" of their out-of-Africa migrations. In this work we test for signatures of natural selection acting on the Hp CNV in a sample from the UK population (Avon Longitudinal Study of Parents and Children, ALSPAC). We present here heterozygosity decay, pairwise F(ST) values observed between ALSPAC and 301 populations from all five populated continents, extended haplotype homozygosity analyses involving the CNV and 80 SNPs surrounding the CNV ~500kb in each direction, and linkage disequilibrium and pairwise haplotypic analyses involving 160 SNPs on chromosome 16q22.1. Taken together, our results represent the first molecular analysis of natural selection in the Hp CNV genetic region.

Indexed as

DNA Copy Number VariationsPolymorphism, Single NucleotideSelection, GeneticGene DuplicationHaplotypesHaptoglobinsHumansLinkage DisequilibriumUnited KingdomWhite PeopleHaptoglobins

Identifiers

PMID22607059
PMCPMC3963445
OpenAlexW1541982172

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.