Evidence map›Paper›PMID 25001882›Full record

ArticleThe pharmacogenomics journal2015

Functional characterization of 21 CYP2C19 allelic variants for clopidogrel 2-oxidation.

M Takahashi, T Saito, M Ito, C Tsukada, Y Katono, H Hosono, M Maekawa, M Shimada, N Mano, A Oda and 2 more

Abstract read
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In one paragraph

Article in The pharmacogenomics journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.6field-weighted citation impact, top 16% 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

8 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. The influence of temperature on the metabolic activity of CYP2C9, CYP2C19, and CYP3A4 genetic variantsXenobiotica; the fate of foreign compounds in biological systems · 2023
    Article
  3. Article
  4. Article
  5. Article
  6. PharmVar GeneFocus: CYP2C19.Clinical pharmacology and therapeutics · 2021
    Review
  7. Article
  8. CYP2C19BioMed research international · 2017
    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

12 authors at 3 institutions in 1 country.

M TakahashiLaboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
T SaitoLaboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
M ItoLaboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
C TsukadaLaboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
Y KatonoLaboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
H HosonoLaboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
M MaekawaDepartment of Pharmacy, Tohoku University Hospital, Sendai, Japan.
M ShimadaDepartment of Pharmacy, Tohoku University Hospital, Sendai, Japan.
N ManoDepartment of Pharmacy, Tohoku University Hospital, Sendai, Japan.
A OdaInstitute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan.
N HirasawaLaboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
M HiratsukaLaboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
Tohoku University · JPTohoku University Hospital · JPKanazawa University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Genetic variations in cytochrome P450 2C19 (CYP2C19) contribute to interindividual variability in the metabolism of therapeutic agents such as clopidogrel. Polymorphisms in CYP2C19 are associated with large interindividual variations in the therapeutic efficacy of clopidogrel. This study evaluated the in vitro oxidation of clopidogrel by 21 CYP2C19 variants harboring amino acid substitutions. These CYP2C19 variants were heterologously expressed in COS-7 cells, and the kinetic parameters of clopidogrel 2-oxidation were estimated. Among the 21 CYP2C19 variants, 12 (that is, CYP2C19.5A, CYP2C19.5B, CYP2C19.6, CYP2C19.8, CYP2C19.9, CYP2C19.10, CYP2C19.14, CYP2C19.16, CYP2C19.19, CYP2C19.22, CYP2C19.24 and CYP2C19.25) showed no or markedly low activity compared with the wild-type protein CYP2C19.1B. This comprehensive in vitro assessment provided insights into the specific metabolic activities of CYP2C19 proteins encoded by variant alleles, and this may to be valuable when interpreting the results of in vivo studies.

Indexed as

AllelesAnimalsChlorocebus aethiopsClopidogrelCOS CellsCytochrome P-450 CYP2C19Genetic VariationHumansLiverOxidation-ReductionTiclopidineClopidogrelCYP2C19 protein, humanCytochrome P-450 CYP2C19Ticlopidine

Identifiers

PMID25001882
OpenAlexW1999280366

What OpenQuestion holds

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Registered trials

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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.