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A Genome-Wide Association Study Identifies rs2000999 as a Strong Genetic Determinant of Circulating Haptoglobin Levels

Overview of attention for article published in PLOS ONE, March 2012
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Title
A Genome-Wide Association Study Identifies rs2000999 as a Strong Genetic Determinant of Circulating Haptoglobin Levels
Published in
PLOS ONE, March 2012
DOI 10.1371/journal.pone.0032327
Pubmed ID
Authors

Philippe Froguel, Ndeye Coumba Ndiaye, Amélie Bonnefond, Nabila Bouatia-Naji, Aurélie Dechaume, Gérard Siest, Bernard Herbeth, Mario Falchi, Leonardo Bottolo, Rosa-Maria Guéant-Rodriguez, Cécile Lecoeur, Michel R. Langlois, Yann Labrune, Aimo Ruokonen, Said El Shamieh, Maria G. Stathopoulou, Anita Morandi, Claudio Maffeis, David Meyre, Joris R. Delanghe, Peter Jacobson, Lars Sjöström, Lena M. S. Carlsson, Andrew Walley, Paul Elliott, Marjo-Riita Jarvelin, George V. Dedoussis, Sophie Visvikis-Siest

Abstract

Haptoglobin is an acute phase inflammatory marker. Its main function is to bind hemoglobin released from erythrocytes to aid its elimination, and thereby haptoglobin prevents the generation of reactive oxygen species in the blood. Haptoglobin levels have been repeatedly associated with a variety of inflammation-linked infectious and non-infectious diseases, including malaria, tuberculosis, human immunodeficiency virus, hepatitis C, diabetes, carotid atherosclerosis, and acute myocardial infarction. However, a comprehensive genetic assessment of the inter-individual variability of circulating haptoglobin levels has not been conducted so far.We used a genome-wide association study initially conducted in 631 French children followed by a replication in three additional European sample sets and we identified a common single nucleotide polymorphism (SNP), rs2000999 located in the Haptoglobin gene (HP) as a strong genetic predictor of circulating Haptoglobin levels (P(overall) = 8.1 × 10(-59)), explaining 45.4% of its genetic variability (11.8% of Hp global variance). The functional relevance of rs2000999 was further demonstrated by its specific association with HP mRNA levels (β = 0.23 ± 0.08, P = 0.007). Finally, SNP rs2000999 was associated with decreased total and low-density lipoprotein cholesterol in 8,789 European children (P(total cholesterol) = 0.002 and P(LDL) = 0.0008).Given the central position of haptoglobin in many inflammation-related metabolic pathways, the relevance of rs2000999 genotyping when evaluating haptoglobin concentration should be further investigated in order to improve its diagnostic/therapeutic and/or prevention impact.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 73 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 1 1%
Spain 1 1%
Qatar 1 1%
Unknown 70 96%

Demographic breakdown

Readers by professional status Count As %
Researcher 12 16%
Student > Master 9 12%
Student > Ph. D. Student 8 11%
Professor > Associate Professor 8 11%
Student > Bachelor 6 8%
Other 16 22%
Unknown 14 19%
Readers by discipline Count As %
Medicine and Dentistry 24 33%
Biochemistry, Genetics and Molecular Biology 13 18%
Agricultural and Biological Sciences 10 14%
Immunology and Microbiology 3 4%
Mathematics 2 3%
Other 6 8%
Unknown 15 21%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 March 2012.
All research outputs
#14,143,189
of 22,663,150 outputs
Outputs from PLOS ONE
#115,535
of 193,502 outputs
Outputs of similar age
#92,650
of 156,326 outputs
Outputs of similar age from PLOS ONE
#1,871
of 3,524 outputs
Altmetric has tracked 22,663,150 research outputs across all sources so far. This one is in the 35th percentile – i.e., 35% of other outputs scored the same or lower than it.
So far Altmetric has tracked 193,502 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 15.0. This one is in the 36th percentile – i.e., 36% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 156,326 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 38th percentile – i.e., 38% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 3,524 others from the same source and published within six weeks on either side of this one. This one is in the 42nd percentile – i.e., 42% of its contemporaries scored the same or lower than it.