Relationship between CYP2C19 genotypes and proton pump inhibitorsʹs pharmacokinetics and pharmacodynamics: review
Abstract
The purpose of this review is to provide clinicians with information and a concise interpretation of the results of pharmacogenetic testing for the cytochrome P450 2C19 (CYP2C19) genotype when choosing a proton pump inhibitor (PPI) dosage. PPIs are widely used for the treatment and prevention of common gastrointestinal diseases, including gastroesophageal reflux disease, gastric and duodenal ulcers, erosive esophagitis, and other hypersecretory conditions. Most PPIs are metabolized predominantly by cytochrome P450 2C19 (CYP2C19) to form inactive metabolites, and the CYP2C19 genotype determines the action of PPIs, their efficacy and possible side effects. In clinical practice, a gastroenterologist or therapist is faced with problems of insufficient effectiveness or the development of adverse reactions when prescribing PPIs. Thus, consideration of CYP2C19 genotype appears to be necessary to determine the optimal PPI dosing regimen. The above served as a reason for generalizing in the presented review of literature data on the prescription of PPIs depending on the CYP2C19 genotype.
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