Evidence map›Paper›PMID 20665013›Full record

ArticleEuropean journal of clinical pharmacology2010

Linkage disequilibrium between the CYP2C19*17 allele and wildtype CYP2C8 and CYP2C9 alleles: identification of CYP2C haplotypes in healthy Nordic populations.

Rasmus S Pedersen, Charlotte Brasch-Andersen, Sarah C Sim, Troels K Bergmann, Jónrit Halling, Maria S Petersen, Pál Weihe, Hege Edvardsen, Vessela N Kristensen, Kim Brøsen and 1 more

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Article in European journal of clinical pharmacology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
–field-weighted citation impact
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

41 citing papers in PubMed.

  1. Hydroxylation index of omeprazole in relation to CYP2C19 polymorphism and sex in a healthy Iranian population.Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences · 2014
    Trial
  2. Trial
  3. Serum Concentration Relationships of Candesartan in Migraine Prevention.Basic & clinical pharmacology & toxicology · 2026
    Observational
  4. Review
  5. Major Allele Frequencies inJournal of personalized medicine · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Observational
  10. Review
  11. Article
  12. Genetic Polymorphism of CYP2C19 in Pakistani Population.Iranian journal of pharmaceutical research : IJPR · 2019
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Pharmacogenomics and personalized medicine · 2017
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors.

Rasmus S PedersenInstitute of Public Health, Clinical Pharmacology, University of Southern Denmark, Odense, Denmark. rpedersen@health.sdu.dk
Charlotte Brasch-Andersen
Sarah C Sim
Troels K Bergmann
Jónrit Halling
Maria S Petersen
Pál Weihe
Hege Edvardsen
Vessela N Kristensen
Kim Brøsen
Magnus Ingelman-Sundberg

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo determine the distribution of clinically important CYP2C genotypes and allele frequencies in healthy Nordic populations with special focus on linkage disequilibrium.

methodsA total of 896 healthy subjects from three Nordic populations (Danish, Faroese, and Norwegian) were genotyped for five frequent and clinically important CYP2C allelic variants: the defective CYP2C8*3, CYP2C9*2, CYP2C9*3, and CYP2C19*2 alleles, and the CYP2C19*17 allele that causes rapid drug metabolism. Linkage disequilibrium was evaluated and CYP2C haplotypes were inferred in the entire population.

resultsTen CYP2C haplotypes were inferred, the most frequent of which (49%) was the CYP2C wildtype haplotype carrying CYP2C8*1, CYP2C9*1, and CYP2C19*1. The second most frequent haplotype (19%) is composed of CYP2C19*17, CYP2C8*1, and CYP2C9*1. This predicted haplotype accounts for 99.7% of the CYP2C19*17 alleles found in the 896 subjects.

conclusionCYP2C19*17 is a frequent genetic variant in Nordic populations that exists in strong linkage disequilibrium with wildtype CYP2C8*1 and CYP2C9*1 alleles, which effectively makes it a determinant for a haplotype exhibiting an efficient CYP2C substrate metabolism.

Indexed as

AllelesHaplotypesLinkage DisequilibriumAryl Hydrocarbon HydroxylasesCytochrome P-450 CYP2C19Cytochrome P-450 CYP2C8Cytochrome P-450 CYP2C9DenmarkHumansNorwayAryl Hydrocarbon HydroxylasesCYP2C19 protein, humanCYP2C8 protein, humanCYP2C9 protein, humanCytochrome P-450 CYP2C19Cytochrome P-450 CYP2C8Cytochrome P-450 CYP2C9

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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.