Evidence map›Paper›PMID 21606947›Full record

ArticleThe pharmacogenomics journal2012

Sequencing of Lp-PLA2-encoding PLA2G7 gene in 2000 Europeans reveals several rare loss-of-function mutations.

K Song, M R Nelson, J Aponte, E S Manas, S-A Bacanu, X Yuan, X Kong, L Cardon, V E Mooser, J C Whittaker and 1 more

Open access · hybridAbstract read
In one paragraph

Article in The pharmacogenomics journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 10% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Genetic invalidation of Lp-PLAEuropean journal of preventive cardiology · 2017
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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 2 countries.

K SongDepartment of Genetics, GlaxoSmithKline, Upper Merion, PA, USA.
M R Nelson
J Aponte
E S Manas
S-A Bacanu
X Yuan
X Kong
L Cardon
V E Mooser
J C Whittaker
D M Waterworth
GlaxoSmithKline (United States) · USResearch Triangle Park Foundation · USGlaxoSmithKline (United Kingdom) · GBHarlow College · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Elevated plasma levels of lipoprotein-associated phospholipase A(2) (Lp-PLA2) activity have been shown to be associated with increased risk of coronary heart disease and an inhibitor of this enzyme is under development for the treatment of that condition. A Val279Phe null allele in this gene, that may influence patient eligibility for treatment, is relatively common in East Asians but has not been observed in Europeans. We investigated the existence and functional effects of low frequency alleles in a Western European population by re-sequencing the exons of PLA2G7 in 2000 samples. In all, 19 non-synonymous single-nucleotide polymorphisms (nsSNPs) were found, 14 in fewer than four subjects (minor allele frequency <0.1%). Lp-PLA2 activity was significantly lower in rare nsSNP carriers compared with non-carriers (167.8±63.2 vs 204.6±41.8, P=0.01) and seven variants had enzyme activities consistent with a null allele. The cumulative frequency of these null alleles was 0.25%, so <1 in 10,000 Europeans would be expected to be homozygous, and thus not potentially benefit from treatment with an Lp-PLA2 inhibitor.

Indexed as

Mutation1-Alkyl-2-acetylglycerophosphocholine EsteraseAllelesAmino Acid SubstitutionCoronary DiseaseEnzyme InhibitorsGenetics, PopulationHomozygoteHumansPhospholipase A2 InhibitorsPhospholipases A2Polymorphism, Single NucleotideSequence Analysis, DNAWhite People1-Alkyl-2-acetylglycerophosphocholine EsteraseEnzyme InhibitorsPhospholipase A2 InhibitorsPhospholipases A2PLA2G7 protein, human

Identifiers

PMID21606947
PMCPMC3449231
OpenAlexW2019131156

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.