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Comparative Study
. 2009 Mar;85(3):273-6.
doi: 10.1038/clpt.2008.213. Epub 2008 Nov 12.

Interindividual variation in the pharmacokinetics of Delta9-tetrahydrocannabinol as related to genetic polymorphisms in CYP2C9

C Sachse-Seeboth  1 , J Pfeil, D Sehrt, I Meineke, M Tzvetkov, E Bruns, W Poser, S V Vormfelde, J Brockmöller
Affiliations
Comparative Study

Interindividual variation in the pharmacokinetics of Delta9-tetrahydrocannabinol as related to genetic polymorphisms in CYP2C9

C Sachse-Seeboth et al. Clin Pharmacol Ther. 2009 Mar.

Abstract

The impact of the CYP2C9 polymorphism on the pharmacokinetics of orally administered 9-tetrahydrocannabinol (THC) was studied in 43 healthy volunteers. THC pharmacokinetics did not differ by CYP2C9*2 allele status. However, the median area under the curve of THC was threefold higher and that of 11-nor-9-carboxy-9-tetrahydrocannabinol was 70% lower in CYP2C9*3/*3 homozygotes than in CYP2C9*1/*1 homozygotes. CYP2C9*3 carriers also showed a trend toward increased sedation following administration of THC. Therefore, the CYP2C9*3 variant may influence both the therapeutic and adverse effects of THC.

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