Evidence map›Paper›PMID 23111421›Full record

ArticlePharmacogenetics and genomics2013

The functional G143E variant of carboxylesterase 1 is associated with increased clopidogrel active metabolite levels and greater clopidogrel response.

Joshua P Lewis, Richard B Horenstein, Kathleen Ryan, Jeffrey R O'Connell, Quince Gibson, Braxton D Mitchell, Keith Tanner, Sumbul Chai, Kevin P Bliden, Udaya S Tantry and 6 more

Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in Pharmacogenetics and genomics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00799396 (Pharmacogenomics of Anti-Platelet Interventions), which is not on this map. Cited by 87 papers.

0numbers the graph read from it
0cells of the map it votes in
87citing papers in PubMed
8.0field-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.

NCT00799396 phase4completednot on this map

Pharmacogenomics of Anti-Platelet Interventions (The PAPI Study)

TypeinterventionalSponsorUniversity of Maryland, BaltimoreRan2006 to 2012Enrolled682ConditionsPlatelet Aggregation Inhibitors, Coronary Heart DiseaseArmsClopidogrel, Aspirin
3 · Its place in the literature

Who cites it

87 citing papers in PubMed, 154 citations in OpenAlex.

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  8. Recent research progress on the mechanisms of clopidogrel resistance.European journal of clinical pharmacology · 2026
    Review
  9. Article
  10. Article
  11. Article
  12. Observational
  13. Article
  14. Increased Plasma Concentrations of 6-oxo-Methylphenidate inMedicinal chemistry research : an international journal for rapid communications on design and mechanisms of action of biologically active agents · 2025
    Article
  15. An in vitro evaluation of common botanical extracts on carboxylesterase 1 catalytic activity.Drug metabolism and disposition: the biological fate of chemicals · 2025
    Article
  16. Review
  17. Article
  18. Article
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  20. Regulation of Human Hydrolases and Its Implications in Pharmacokinetics and Pharmacodynamics.Drug metabolism and disposition: the biological fate of chemicals · 2024
    Review

27 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

16 authors at 5 institutions in 2 countries.

Joshua P LewisDivision of Endocrinology, Diabetes and Nutrition, and Program for Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
Richard B Horenstein
Kathleen Ryan
Jeffrey R O'Connell
Quince Gibson
Braxton D Mitchell
Keith Tanner
Sumbul Chai
Kevin P Bliden
Udaya S Tantry
Cody J Peer
William D Figg
Shawn D Spencer
Michael A Pacanowski
Paul A Gurbel
Alan R Shuldiner
University of Maryland, Baltimore · USSinai Hospital · USCancer Institute (WIA) · INScience Applications International Corporation (United States) · USUnited States Food and Drug Administration · US

Funding

Zonulin Antibodies in Intestinal Permeabilitiy in IDDMM01RR016500 · NCRR · UNIVERSITY OF MARYLAND BALTIMORE · PI OSWALD, LYNN M · 2002 to 2009
$20.2M
Sample Processing and Analytical Methods Development for New Anticancer AgentsZICSC006536 · NCI · DIVISION OF CLINICAL SCIENCES - NCI · PI FIGG, WILLIAM DOUGLAS · 2009 to 2025
$18.1M
Research BaseP30DK072488 · NIDDK · UNIVERSITY OF MARYLAND BALTIMORE · PI MITCHELL, BRAXTON D, TAYLOR, SIMEON I. · 2005 to 2019
$17.3M
Using Clinical Pharmacology Principles to Develop New Anticancer TherapiesZICSC006537 · NCI · DIVISION OF CLINICAL SCIENCES - NCI · PI FIGG, WILLIAM DOUGLAS · 2009 to 2025
$14.4M
Clinical PharmacogeneticsZIABC010627 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI FIGG, WILLIAM DOUGLAS · 2009 to 2025
$13.9M
Pharmacogenomics of Anti-platlet Intervention-2 (PAPI-2) StudyU01HL105198 · NHLBI · UNIVERSITY OF MARYLAND BALTIMORE · PI SHULDINER, ALAN R. · 2010 to 2014
$13.6M
Pharmacogenomics of CVD risk ReductionU01GM074518 · NIGMS · UNIVERSITY OF MARYLAND BALTIMORE · PI SHULDINER, ALAN R. · 2005 to 2009
$7.3M
Aspirin Pharmacogenomics: Role of PEAR1 in Personalized Anti-Platelet TherapyK23GM102678 · NIGMS · UNIVERSITY OF MARYLAND BALTIMORE · PI LEWIS, JOSHUA PATRICK · 2012 to 2016
$806k
NCRR NIH HHS M01 RR016500NCRR NIH HHS M01 RR 16500NHLBI NIH HHS U01 HL105198NIDDK NIH HHS P30 DK072488NIGMS NIH HHS K23 GM102678NIGMS NIH HHS U01 GM074518NIGMS NIH HHS U01 GM074518-05S1
6 · The paper itself

Abstract

introductionCarboxylesterase 1 (CES1) is the primary enzyme responsible for converting clopidogrel into biologically inactive carboxylic acid metabolites.

methodsWe genotyped a functional variant in CES1, G143E, in participants of the Pharmacogenomics of Anti-Platelet Intervention (PAPI) study (n=566) and in 350 patients with coronary heart disease treated with clopidogrel, and carried out an association analysis of bioactive metabolite levels, on-clopidogrel ADP-stimulated platelet aggregation, and cardiovascular outcomes.

resultsThe levels of clopidogrel active metabolite were significantly greater in CES1 143E-allele carriers (P=0.001). Consistent with these findings, individuals who carried the CES1 143E-allele showed a better clopidogrel response as measured by ADP-stimulated platelet aggregation in both participants of the PAPI study (P=0.003) and clopidogrel-treated coronary heart disease patients (P=0.03). No association was found between this single nucleotide polymorphism and baseline measures of platelet aggregation in either cohort.

conclusionTaken together, these findings suggest, for the first time, that genetic variation in CES1 may be an important determinant of the efficacy of clopidogrel.

Indexed as

PharmacogeneticsCarboxylic Ester HydrolasesClopidogrelCoronary Artery DiseaseDNAFemaleGenotypeHeterozygoteHumansMaleMiddle AgedPlatelet AggregationPlatelet Aggregation InhibitorsPolymerase Chain ReactionPolymorphism, GeneticPrognosisCarboxylic Ester HydrolasesCES1 protein, humanClopidogrelDNAPlatelet Aggregation InhibitorsTiclopidine

Identifiers

PMID23111421
PMCPMC3682407
OpenAlexW2110202376

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Registered trials

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.