The Prevalence of Potential Drug-Drug-Gene Interactions: A Descriptive Study Using Swiss Claims Data

Nina L Wittwer,1,2 Christoph R Meier,1– 3 Carola A Huber,4 Julie D Moser,1 Henriette E Meyer zu Schwabedissen,5 Samuel S Allemann,6,* Cornelia Schneider1,2,* 1Basel Pharmacoepidemiology Unit, Division of Clinical Pharmacy and Epidemiology, Department of Pharmaceutical Science...

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Main Authors: Wittwer NL, Meier CR, Huber CA, Moser JD, Meyer zu Schwabedissen HE, Allemann SS, Schneider C
Format: Article
Language:English
Published: Dove Medical Press 2025-08-01
Series:Pharmacogenomics and Personalized Medicine
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Online Access:https://www.dovepress.com/the-prevalence-of-potential-drug-drug-gene-interactions-a-descriptive--peer-reviewed-fulltext-article-PGPM
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author Wittwer NL
Meier CR
Huber CA
Moser JD
Meyer zu Schwabedissen HE
Allemann SS
Schneider C
author_facet Wittwer NL
Meier CR
Huber CA
Moser JD
Meyer zu Schwabedissen HE
Allemann SS
Schneider C
author_sort Wittwer NL
collection DOAJ
description Nina L Wittwer,1,2 Christoph R Meier,1– 3 Carola A Huber,4 Julie D Moser,1 Henriette E Meyer zu Schwabedissen,5 Samuel S Allemann,6,* Cornelia Schneider1,2,* 1Basel Pharmacoepidemiology Unit, Division of Clinical Pharmacy and Epidemiology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland; 2Hospital Pharmacy, University Hospital Basel, Basel, Switzerland; 3Boston Collaborative Drug Surveillance Program, Lexington, MA, USA; 4Department of Health Sciences, Helsana Group, Zürich, Switzerland; 5Biopharmacy, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland; 6Pharmaceutical Care, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland*These authors contributed equally to this workCorrespondence: Samuel S Allemann, Pharmaceutical Care Research Group, University of Basel Department of Pharmaceutical Sciences Klingelbergstrasse 504056 Basel, Switzerland, Email s.allemann@unibas.chPurpose: We aimed to determine the prevalence of interactions between PGx drugs metabolized by CYP2C9, CYP2C19, and CYP2D6 and drugs that act as inhibitors or inducers of those enzymes in the Swiss population.Patients and Methods: We defined concomitant use of PGx drugs and inhibitors/inducers as instances where a claim of a PGx drug and a claim of an inducer or inhibitor concerning the same enzyme were made within a specified temporal window, either ± 5 days or ± 30 days. We assessed concomitant drug use between 2017 and 2021, using claims data from a Swiss insurance company (Helsana).Results: Out of 894,748 individuals continuously insured, between 17.4% (± 5-days window) and 24.8% (± 30-days window) were exposed to potentially interacting drug pairs, with 1.5% to 2.2% being exposed to potentially strong interacting drug pairs. Individuals exposed to potentially interacting drugs were more frequently female, older and took a greater number of drugs than the general population. The majority of potential interactions were associated with CYP2D6 or CYP2C19.Conclusion: In light of the high prevalence of the simultaneous use of PGx drugs with inhibitor and inducer drugs, it is imperative to consider non-genetic factors, such as drug-induced phenoconversions, when interpreting PGx test results.Keywords: drug-drug interaction, drug-drug-gene interaction, phenoconversion
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spelling doaj-art-3f936ca2f5c14481a22a78c13bf9143f2025-08-24T17:31:58ZengDove Medical PressPharmacogenomics and Personalized Medicine1178-70662025-08-01Volume 18Issue 1197208106100The Prevalence of Potential Drug-Drug-Gene Interactions: A Descriptive Study Using Swiss Claims DataWittwer NLMeier CR0Huber CA1Moser JDMeyer zu Schwabedissen HE2Allemann SS3Schneider C4Department of Pharmaceutical SciencesDepartment of Health SciencesDepartment of Pharmaceutical SciencesDepartment of Pharmaceutical SciencesDepartment of Pharmaceutical SciencesNina L Wittwer,1,2 Christoph R Meier,1– 3 Carola A Huber,4 Julie D Moser,1 Henriette E Meyer zu Schwabedissen,5 Samuel S Allemann,6,* Cornelia Schneider1,2,* 1Basel Pharmacoepidemiology Unit, Division of Clinical Pharmacy and Epidemiology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland; 2Hospital Pharmacy, University Hospital Basel, Basel, Switzerland; 3Boston Collaborative Drug Surveillance Program, Lexington, MA, USA; 4Department of Health Sciences, Helsana Group, Zürich, Switzerland; 5Biopharmacy, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland; 6Pharmaceutical Care, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland*These authors contributed equally to this workCorrespondence: Samuel S Allemann, Pharmaceutical Care Research Group, University of Basel Department of Pharmaceutical Sciences Klingelbergstrasse 504056 Basel, Switzerland, Email s.allemann@unibas.chPurpose: We aimed to determine the prevalence of interactions between PGx drugs metabolized by CYP2C9, CYP2C19, and CYP2D6 and drugs that act as inhibitors or inducers of those enzymes in the Swiss population.Patients and Methods: We defined concomitant use of PGx drugs and inhibitors/inducers as instances where a claim of a PGx drug and a claim of an inducer or inhibitor concerning the same enzyme were made within a specified temporal window, either ± 5 days or ± 30 days. We assessed concomitant drug use between 2017 and 2021, using claims data from a Swiss insurance company (Helsana).Results: Out of 894,748 individuals continuously insured, between 17.4% (± 5-days window) and 24.8% (± 30-days window) were exposed to potentially interacting drug pairs, with 1.5% to 2.2% being exposed to potentially strong interacting drug pairs. Individuals exposed to potentially interacting drugs were more frequently female, older and took a greater number of drugs than the general population. The majority of potential interactions were associated with CYP2D6 or CYP2C19.Conclusion: In light of the high prevalence of the simultaneous use of PGx drugs with inhibitor and inducer drugs, it is imperative to consider non-genetic factors, such as drug-induced phenoconversions, when interpreting PGx test results.Keywords: drug-drug interaction, drug-drug-gene interaction, phenoconversionhttps://www.dovepress.com/the-prevalence-of-potential-drug-drug-gene-interactions-a-descriptive--peer-reviewed-fulltext-article-PGPMDrug-Drug InteractionDrug-Drug-Gene InteractionPhenoconversion
spellingShingle Wittwer NL
Meier CR
Huber CA
Moser JD
Meyer zu Schwabedissen HE
Allemann SS
Schneider C
The Prevalence of Potential Drug-Drug-Gene Interactions: A Descriptive Study Using Swiss Claims Data
Pharmacogenomics and Personalized Medicine
Drug-Drug Interaction
Drug-Drug-Gene Interaction
Phenoconversion
title The Prevalence of Potential Drug-Drug-Gene Interactions: A Descriptive Study Using Swiss Claims Data
title_full The Prevalence of Potential Drug-Drug-Gene Interactions: A Descriptive Study Using Swiss Claims Data
title_fullStr The Prevalence of Potential Drug-Drug-Gene Interactions: A Descriptive Study Using Swiss Claims Data
title_full_unstemmed The Prevalence of Potential Drug-Drug-Gene Interactions: A Descriptive Study Using Swiss Claims Data
title_short The Prevalence of Potential Drug-Drug-Gene Interactions: A Descriptive Study Using Swiss Claims Data
title_sort prevalence of potential drug drug gene interactions a descriptive study using swiss claims data
topic Drug-Drug Interaction
Drug-Drug-Gene Interaction
Phenoconversion
url https://www.dovepress.com/the-prevalence-of-potential-drug-drug-gene-interactions-a-descriptive--peer-reviewed-fulltext-article-PGPM
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