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Evaluation of Phenotypic and Genotypic Variations of Drug Metabolising Enzymes and Transporters in Chronic Pain Patients Facing Adverse Drug Reactions or Non-Response to Analgesics: A Retrospective Study

Publié dansJournal of Personalized Medicine, vol. 10, no. 4, 198
Date de publication2020
Résumé

This retrospective study evaluates the link between an adverse drug reaction (ADR) or a non-response to treatment and cytochromes P450 (CYP), P-glycoprotein (P-gp) or catechol-O-methyltransferase (COMT) activity in patients taking analgesic drugs for chronic pain. Patients referred to a pain center for an ADR or a non-response to an analgesic drug between January 2005 and November 2014 were included. The genotype and/or phenotype was obtained for assessment of the CYPs, P-gp or COMT activities. The relation between the event and the result of the genotype and/or phenotype was evaluated using a semi-quantitative scale. Our analysis included 243 individual genotypic and/or phenotypic explorations. Genotypes/phenotypes were mainly assessed because of an ADR (n = 145, 59.7%), and the majority of clinical situations were observed with prodrug opioids (n = 148, 60.9%). The probability of a link between an ADR or a non-response and the genotypic/phenotypic status of the patient was evaluated as intermediate to high in 40% and 28.2% of all cases, respectively. The drugs in which the probability of an association was the strongest were the prodrug opioids, with an intermediate to high link in 45.6% of the cases for occurrence of ADRs and 36.0% of the cases for non-response. This study shows that the genotypic and phenotypic approach is useful to understand ADRs or therapeutic resistance to a usual therapeutic dosage, and can be part of the evaluation of chronic pain patients.

Mots-clés
  • Personalised medicine
  • Cytochrome P450
  • P-glycoprotein
  • COMT
  • Analgesic drugs
  • Adverse drug reaction
Citation (format ISO)
ROLLASON, Victoria et al. Evaluation of Phenotypic and Genotypic Variations of Drug Metabolising Enzymes and Transporters in Chronic Pain Patients Facing Adverse Drug Reactions or Non-Response to Analgesics: A Retrospective Study. In: Journal of Personalized Medicine, 2020, vol. 10, n° 4, p. 198. doi: 10.3390/jpm10040198
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Article (Published version)
Identifiants
ISSN du journal2075-4426
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Informations techniques

Création10.11.2020 14:34:00
Première validation10.11.2020 14:34:00
Heure de mise à jour16.03.2023 00:08:36
Changement de statut16.03.2023 00:08:35
Dernière indexation12.02.2024 12:02:29
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