Evidence map›Paper›PMID 18751689›Full record

ArticleEuropean journal of clinical pharmacology2009

Optimal dose regimens of esomeprazole for gastric acid suppression with minimal influence of the CYP2C19 polymorphism.

Horng-Yuan Lou, Chun-Chao Chang, Ming-Thau Sheu, Ying-Chen Chen, Hsiu-O Ho

Abstract readControlled Clinical Trial
PubMed Publisher
In one paragraph

Article in European journal of clinical pharmacology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 13% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. World journal of clinical cases · 2024
    Article
  6. High-dose dual therapyTherapeutic advances in gastroenterology · 2023
    Article
  7. Review
  8. Article
  9. Biology · 2021
    Article
  10. Influence ofFrontiers in pharmacology · 2021
    Review
  11. Proton pump inhibitors: from CYP2C19 pharmacogenetics to precision medicine.Expert opinion on drug metabolism & toxicology · 2018
    Review
  12. Effect of CYP2C19 Gene Polymorphisms on Proton Pump Inhibitor, Amoxicillin, and Levofloxacin Triple Therapy for Eradication of Helicobacter Pylori.Medical science monitor : international medical journal of experimental and clinical research · 2017
    Article
  13. Article
  14. Review
  15. Review
  16. Review
  17. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Horng-Yuan LouDivision of Gastroenterology, Department of Internal Medicine, Taipei Medical University and Hospital, Taipei, Taiwan.
Chun-Chao Chang
Ming-Thau Sheu
Ying-Chen Chen
Hsiu-O Ho
Taipei Medical University · TWTaipei Medical University Hospital · TWHsing Wu University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIn this pilot study, we attempted to determine the optimal dosage regimens of esomeprazole for treatment of GERD with minimal influence of the CYP2C19 polymorphism through a study of the pharmacokinetics and pharmacodynamics of esomeprazole given at 3 different dosage regimens with the same total daily dose.

methodsEach of the 3 genotypes of CYP2C19, homozygous extensive metabolizers (homEMs), heterozygous EMS (hetEMs), and poor metabolizers (PMs) were recruited in this clinical trial. Subjects were given a placebo followed by the administration of esomeprazole, at a dose of 40 mg once daily (40QD), 20 mg twice daily (20TD), or 10 mg 4 times daily (10Q4D) for 7 days. Twenty-four-hour and nocturnal intragastric pH and plasma esomeprazole concentrations were all determined on day 7.

resultsThe pharmacokinetic parameters and dynamic characteristics differed among the 3 CYP2C19 genotype groups. With esomeprazole 40QD, gastric acid suppression was insufficient to achieve a therapeutic effect, while 20TD and 10Q4D were found to be effective in controlling both daytime and nocturnal gastric acidity for all 3 genotype groups.

conclusionsIt was confirmed that intragastric pH values and plasma esomeprazole concentrations potentially depended on the CYP2C19 genotype status for treatment with esomeprazole. Dosage regimens of divided doses of 20TD or 10Q4D esomeprazole yielded improved antisecretory effects with a minimal influence of CYP2C19 polymorphisms.

Indexed as

Polymorphism, GeneticAdultAryl Hydrocarbon HydroxylasesCytochrome P-450 CYP2C19Down-RegulationDrug Administration ScheduleEsomeprazoleGastric AcidGastric Acidity DeterminationGastroesophageal RefluxGene FrequencyHeterozygoteHomozygoteHumansPhenotypePilot ProjectsAryl Hydrocarbon HydroxylasesCYP2C19 protein, humanCytochrome P-450 CYP2C19EsomeprazoleProton Pump Inhibitors

Identifiers

PMID18751689
OpenAlexW2089634709

What OpenQuestion holds

Textmetadata
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.