Evidence map›Paper›PMID 24046523›Full record

ArticleInternational journal of medical sciences2013

Genotype-phenotype analysis of CYP2C19 in healthy saudi individuals and its potential clinical implication in drug therapy.

Leena H Saeed, Ahmed Y Mayet

Open access · goldAbstract read
In one paragraph

Article in International journal of medical sciences, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
3.9field-weighted citation impact, top 8% 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, 2 syntheses or guidelines pooled it, 40 citations in OpenAlex.

  1. Pooled it
  2. The Effect of CYP2C19 and Nongenetic Factors on Clopidogrel Responsiveness in the MENA Region: A Systematic Review.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
    Pooled it
  3. 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
  4. Genetic variants ofJournal of Taibah University Medical Sciences · 2026
    Article
  5. Article
  6. Review
  7. Prevalence ofPharmacogenomics and personalized medicine · 2025
    Article
  8. Article
  9. From genes to drugs:Frontiers in pharmacology · 2024
    Review
  10. Article
  11. Review
  12. Article
  13. Genetic Polymorphism of CYP2C19 in Pakistani Population.Iranian journal of pharmaceutical research : IJPR · 2019
    Article
  14. Article
  15. Observational
  16. Review
  17. Genotype and allele frequency of CYP2C19*17 in a healthy Iranian population.Medical journal of the Islamic Republic of Iran · 2015
    Article
  18. Practice guidelines for the management ofSaudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association
    Article
  19. Selecting the optimum first-line treatment for H. pylori eradication.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association
    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

2 authors at 1 institution in 1 country.

Leena H Saeed1. King Fahad Medical City, P.O. Box 59046, Riyadh 11525, Kingdom of Saudi Arabia.
Ahmed Y Mayet
King Saud University · SA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

unlabelledCYP2C19 is a cytochrome P450 enzyme, which is involved in the metabolism of some clinically important medications and is encoded by a highly polymorphic gene. There is no available data on the distribution of the CYP2C19 *4 and *17 mutant alleles in the Saudi Arabian population. The aim of the study was to determine different CYP2C19 mutant allele (*2, *4 and *17) frequencies in healthy Saudi subjects and to determine genotype frequencies for these mutations. The CYP2C19 genotypes were then classified into phenotypes.

resultIn 201 adults of Saudi ethnicity, the allele frequencies were CYP2C19*1 (62.9%), *17 (25.7%), *2 (11.2%) and *4 (0.2%). The most prevalent genotype combinations were CYP2C19 *1/*1 (40.3%) and *1/*17 (30.4%). The distribution of CYP2C19 phenotypes was divided into extensive metabolizers (EM) 77.6%, intermediate metabolizers (IM) 14.9%, ultra-rapid metabolizers (UM) 7% and poor metabolizers (PM) 0.4%. This finding has important clinical implications for the use of CYP2C19 metabolized medications in the Saudi population and further studies are needed.

Indexed as

Aryl Hydrocarbon HydroxylasesCytochrome P-450 CYP2C19Cytochrome P-450 Enzyme SystemGenotypeHumansPhenotypePolymorphism, GeneticSaudi ArabiaAryl Hydrocarbon HydroxylasesCYP2C19 protein, humanCytochrome P-450 CYP2C19Cytochrome P-450 Enzyme SystemCYP2C19cytochrome P450genotypephenotypepolymorphism

Identifiers

PMID24046523
PMCPMC3775106
OpenAlexW2035168735

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.