Evidence map›Paper›PMID 18612205›Full record

ArticleHuman heredity2008

LPA and PLG sequence variation and kringle IV-2 copy number in two populations.

Dana C Crawford, Ze Peng, Jan-Fang Cheng, Dario Boffelli, Magdalena Ahearn, Dan Nguyen, Tristan Shaffer, Qian Yi, Robert J Livingston, Mark J Rieder and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Human heredity, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 26% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Lipoprotein(a): a Case for Universal Screening in Youth.Current atherosclerosis reports · 2023
    Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Lipoprotein (a): structure, pathophysiology and clinical implications.Arquivos brasileiros de cardiologia · 2014 · on this map
    Review
  12. Article
  13. Article
  14. 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

11 authors at 4 institutions in 1 country.

Dana C CrawfordDepartment of Molecular Physiology and Biophysics, Center for Human Genetics Research, Vanderbilt University, Nashville, TN 37232, USA. crawford@chgr.mc.vanderbilt.edu
Ze Peng
Jan-Fang Cheng
Dario Boffelli
Magdalena Ahearn
Dan Nguyen
Tristan Shaffer
Qian Yi
Robert J Livingston
Mark J Rieder
Deborah A Nickerson
University of Washington · USJoint Genome Institute · USCenter for Human Genetics · USLawrence Berkeley National Laboratory · US

Funding

UW-FHCRC VARIATION DISCOVERY RESOURCEU01HL066682 · NHLBI · UNIVERSITY OF WASHINGTON · PI NICKERSON, DEBORAH A · 2000 to 2007
$19.1M
COMPARATIVE GENOMIC ANALYSIS OF CARDIOVASCULAR GENE REGUU01HL066728 · NHLBI · UNIVERSITY OF CALIF-LAWRENC BERKELEY LAB · PI CHENG, JAN-FANG · 2000 to 2003
$3.8M
IDENTIFICATION OF SINGLE NUCLEOTIDE POLYMORPHISMS (SNPS) IN DISEASE SUSCEPTIBILIN01ES15478 · NIEHS · PI NICKERSON, DEBORAH A · 2007 to 2007
$286k
NHLBI NIH HHS U01 HL066682NHLBI NIH HHS U01 HL66682NHLBI NIH HHS U01 HL66728NIEHS NIH HHS N01 ES015478NIEHS NIH HHS N01 ES15478
6 · The paper itself

Abstract

BACKGROUND/

aimsLp(a) levels have long been recognized as a potential risk factor for coronary heart disease that is almost completely under genetic control. Much of the genetics impacting Lp(a) levels has been attributed to the highly polymorphic LPA kringle IV-2 copy number variant, and most of the variance in Lp(a) levels in populations of European-descent is inversely correlated with kringle IV copy number. However, less of the variance is explained in African-descent populations for the same structural variation. African-descent populations have, on average, higher levels of Lp(a), suggesting other genetic factors contribute to Lp(a) level variability across populations.

methodsTo identify potential cis-acting factors, we re-sequenced the gene LPA for single nucleotide polymorphism (SNP) discovery in 23 European-Americans and 24 African-Americans. We also re- sequenced the neighboring gene plasminogen (PLG) and genotyped the kringle IV copy number variant in the same reference samples.

resultsThese data are the most comprehensive description of sequence variation in LPA and its relationship with the kringle IV copy number variant. With these data, we demonstrate that only a fraction of LPA sequence diversity has been previously documented. Also, we identify several high frequency SNPs present in the African-American sample but absent in the European-American sample. Finally, we show that SNPs within PLG are not in linkage disequilibrium with SNPs in LPA, and we show that kringle IV copy number variation is not in linkage disequilibrium with either LPA or PLG SNPs.

conclusionsTogether, these data suggest that LPA SNPs could independently contribute to Lp(a) levels in the general population.

Indexed as

Gene DosageGenetic VariationSequence Analysis, DNAAllelesBlack or African AmericanBlack PeopleGene FrequencyHumansKringlesLinkage DisequilibriumLipoprotein(a)Molecular Sequence DataPlasminogenPolymorphism, Single NucleotideWhite PeopleLipoprotein(a)Plasminogen

Identifiers

PMID18612205
PMCPMC2861532
OpenAlexW2072731631

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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.