Gene index

CYP2C19

HGNC ↗

28 article(s) in the watch · Pharmacogenomics

CYP2C19 is a key drug-metabolising enzyme. Its polymorphism (loss-of-function *2/*3, gain-of-function *17 alleles) modulates the efficacy of clopidogrel, voriconazole, several antidepressants and proton-pump inhibitors (CPIC level A guidelines).

PharmacogenomicsLevel APharmGKB 1A

Drugs involved: clopidogrel, voriconazole, antidepressants (citalopram, escitalopram, sertraline, amitriptyline), proton-pump inhibitors

Recommendation: CPIC level A · RNPGx advised (antidepressants)

Curated publications

10/10

Inflammation-driven variability in drug metabolism: Insights from voriconazole treatment of HSCT recipients

Voriconazole after hematopoietic stem cell transplantation — inflammation-driven phenoconversion

PGx30 June 2026
9/10

Paradoxical myocardial infarction risk with dual antiplatelet therapy in East Asian ischaemic stroke: a nationwide real-world cohort study and pharmacogenomic risk prediction model

Secondary ischemic stroke prevention — dual antiplatelet therapy and *CYP2C19* in East Asian populations

PGx30 June 2026
9/10

Pharmacogenetic phenoconversion modeling of drug-drug-gene interactions on CYP2C19 activity: effects of comedication by genotype on escitalopram concentrations

Escitalopram — modeling of drug-drug-gene interactions on *CYP2C19* activity

PGx30 June 2026
9/10

Sex Differences in Prognostic Implications of CYP2C19 Genotype After Drug-Eluting Stent Implantation.

Acute coronary syndrome on clopidogrel — CYP2C19 genotype prognostic effect differs by sex

PGx13 May 2026
8/10

CRISPR-Based Assay for Point-of-Care Pharmacogenetic CYP2C19 Genotyping

Point-of-care *CYP2C19* genotyping — CRISPR assay

PGx30 June 2026
8/10

High Prevalence of CYP2C19 Rapid and Ultrarapid Metabolism Among Patients With Gastroesophageal Reflux Disease.

Gastroesophageal reflux disease — PPI failure, CYP2C19 rapid/ultrarapid metabolizer prevalence

PGx3 June 2026
8/10

Impact of CYP2C19 and CYP3A4 Inhibitor Use on Clopidogrel Clinical Effectiveness in CYP2C19 Genotyped Patients Undergoing Percutaneous Coronary Intervention.

CYP2C19 phenoconversion under drug inhibitors after percutaneous coronary intervention

PGx20 May 2026
8/10

Genotype-Guided vs Conventional Oral P2Y12 Inhibitors in Acute Coronary Syndrome: A Combined Analysis

Acute coronary syndrome (ACS) — MACE risk under clopidogrel

PGx6 May 2026
7/10

Large-scale analysis demonstrates the influence of CYP2C19 genotype on specific SSRI side effects.

Selective serotonin reuptake inhibitor side effects

PGx11 August 2026
7/10

Exposure to CYP2C19-metabolized drugs following acute stroke: A longitudinal cohort study to inform implementation of CYP2C19 genotype testing.

Ischaemic stroke — exposure to CYP2C19 substrates

PGx28 July 2026
7/10

The association of ABCB1, CYP2C19 and CYP2C9 combined activity with clopidogrel resistance in patients with recurrent ischemic stroke

Clopidogrel resistance — recurrent ischemic stroke

PGx23 June 2026
7/10

Evaluation of a pantoprazole and 4-desmethylpantoprazole-sulfate metabolic ratio as a novel CYP2C19 phenotyping method

CYP2C19 functional phenotyping — validation of pantoprazole/4-desmethylpantoprazole-sulfate metabolic ratio as phenotyping probe

PGx10 June 2026
7/10

Genotype influences antidepressant discontinuation in a pre-emptive pharmacogenetic testing population.

Depression / Anxiety

PGx27 May 2026
7/10

CYP2C19 genotype-guided antiplatelet therapy to prevent thromboembolic events after stent-assisted coil embolization of unruptured intracranial aneurysms: a retrospective cohort study.

Unruptured intracranial aneurysm treated by stent-assisted coil embolization

PGx20 May 2026
7/10

Limited Visibility and Perception of the Clinical Relevance of Clopidogrel Pharmacogenetics in Cardiology Literature.

Under-implementation of clopidogrel pharmacogenetics in cardiology

PGx13 May 2026
7/10

Pharmacogenomic Profiling of Voriconazole Enables Predicting Its Toxicity in Pediatric Leukemia and Hematopoietic Stem Cell Transplant Recipients.

Voriconazole toxicity in pediatric leukemia and HSCT — prediction by CYP2C19 genotype

PGx13 May 2026
7/10

Influence of combined CYP2C19 and CYP2D6 phenotypes on adverse drug reactions in patients with major depressive disorder: a clinical cohort study

Major depressive disorder (MDD) — antidepressant adverse drug reactions

PGx6 May 2026
7/10

Identification and functional characterization of 11 novel CYP2C19 variants in the Chinese Han population

CYP2C19 metabolic variability — new alleles in Chinese Han population

PGx6 May 2026
7/10

Challenges and prospects of CYP2C19 genotype-guided clopidogrel therapy from the perspective of precision medicine

Post-PCI antiplatelet therapy — debate on CYP2C19 genotyping generalization

PGx6 May 2026
6/10

Pharmacogenomic landscape in Thailand: Array-based profiling and EMR-linked medication exposure

Pharmacogenomic implementation in a Thai population

PGx4 August 2026
6/10

Machine Learning With Genetic and Clinical Data to Predict Ischemic Outcomes After PCI.

Dual antiplatelet therapy after percutaneous coronary intervention

PGx14 July 2026
6/10

A primary care pharmacogenetic precision medicine pilot based on specific Māori tribal ethical frameworks and principles

Primary care pharmacogenetics — Māori tribal ethical framework

PGx30 June 2026
6/10

Combinations of single gene predictors with AI-driven polygenic precision therapies in cardiovascular diseases.

Cardiovascular diseases / pharmacogenomics

PGx16 June 2026
6/10

Optimizing P2Y12 Inhibitor Therapy in Post-PCI Patients Through Genotype-Guided Strategies: A Systematic Review and Meta-Analysis.

Post-PCI — CYP2C19 genotype-guided P2Y12 inhibitor therapy optimization

PGx3 June 2026
6/10

Voriconazole therapy and CYP2C19 phenotype: identifying patients who may need alternative antifungal therapy.

Invasive fungal infections — voriconazole

PGx27 May 2026
5/10

Pre-emptive CYP2C19 genotyping and voriconazole exposure in pediatric hematology patients at risk of aspergillosis: an exploratory randomized pilot study with a cost-consequence analysis.

Voriconazole exposure in paediatric haematology

PGx11 August 2026
5/10

CYP2C19 c.681G>A Is not in Complete Linkage Disequilibrium With c.332-23A>G: Implications for Pharmacogenetic Testing

CYP2C19 genotype interpretation

PGx4 August 2026
5/10

Integrating Clinical Evidence with PBPK Modeling to Assess PPI-Clopidogrel-CYP2C19 Interactions in Chinese ACS Patients.

Acute coronary syndrome — PPI-clopidogrel interaction

PGx28 July 2026

Frequently asked questions

Which drugs are affected by CYP2C19 in pharmacogenomics?+

clopidogrel, voriconazole, antidepressants (citalopram, escitalopram, sertraline, amitriptyline), proton-pump inhibitors — CPIC level A · RNPGx advised (antidepressants)

How many Geno'X publications cover the CYP2C19 gene?+

28 publication(s) on CYP2C19 have been selected, summarised and scored by Geno'X on a public grading grid (domains: Pharmacogenomics).