en
Scientific article
English

Pharmacogenetic study on risperidone long-acting injection: influence of cytochrome P450 2D6 and pregnane X receptor on risperidone exposure and drug-induced side-effects

Published inJournal of clinical psychopharmacology, vol. 33, no. 3, p. 289-298
Publication date2013
Abstract

Risperidone is metabolized by polymorphic enzymes, and a large variability in plasma concentration and therapeutic response is observed. Risperidone long-acting injection (RLAI) avoids the first-pass effect, and little is known about the influence of gene polymorphisms involved in its pharmacokinetics. The influence on plasma concentrations of risperidone (RIS), its metabolite 9-hydroxy-risperidone, and on adverse effects were investigated for polymorphisms of cytochrome P450 2D6 (CYP2D6) (*3, *4, *5, *6), CYP3A (CYP3A4*1B, CYP3A4 rs4646437, CYP3A5*3, CYP3A7*1C), ABCB1 (1236C>T, 2677G>T, 3435C>T), NR1/2 coding for pregnane X receptor (rs1523130, rs2472677, rs7643645), and for CYP3A activity measured by a phenotyping test. Forty-two patients with at least 4 consecutive unchanged doses of RLAI were included in a multicenter cross-sectional study. A 55% lower dose-adjusted plasma levels of RIS were observed for CYP2D6 ultrarapid metabolizers (n = 5) as compared with CYP2D6 intermediate metabolizers (P < 0.007). NR1/2 polymorphism (rs7643645A>G) influenced RIS exposure with a 2.8-fold lower active moiety (P = 0.031) in GG compared with the AA genotype. This was confirmed in a second independent cohort (n = 16). Furthermore, high-density lipoprotein cholesterol was positively correlated with CYP3A activity (P = 0.01), and the NR1/2 (rs2472677) polymorphism was associated with different adverse effects including prolactin plasma levels adjusted for age and sex. In conclusion, our results confirmed the influence of CYP2D6 genotype on plasma levels of RIS. This is the first report on the influence of NR1/2 polymorphisms on RLAI exposure and on drug-induced adverse effects. These results should be validated in larger cohorts.

Keywords
  • Adolescent
  • Adult
  • Antipsychotic Agents/administration & dosage/adverse effects/pharmacokinetics
  • Cohort Studies
  • Cross-Sectional Studies
  • Cytochrome P-450 CYP2D6/genetics
  • Dose-Response Relationship, Drug
  • Female
  • Genotype
  • Humans
  • Injections
  • Male
  • Middle Aged
  • Pharmacogenetics
  • Polymorphism, Single Nucleotide
  • Receptors, Steroid/genetics
  • Risperidone/administration & dosage/adverse effects/pharmacokinetics
  • Young Adult
Citation (ISO format)
CHOONG, Eva et al. Pharmacogenetic study on risperidone long-acting injection: influence of cytochrome P450 2D6 and pregnane X receptor on risperidone exposure and drug-induced side-effects. In: Journal of clinical psychopharmacology, 2013, vol. 33, n° 3, p. 289–298. doi: 10.1097/JCP.0b013e31828f62cd
Main files (1)
Article (Published version)
accessLevelRestricted
Identifiers
ISSN of the journal0271-0749
557views
0downloads

Technical informations

Creation2014/12/10 11:57:00
First validation2014/12/10 11:57:00
Update time2023/03/14 22:25:05
Status update2023/03/14 22:25:05
Last indexation2024/01/16 15:05:49
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack