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Absence of Pharmacokinetic Interactions between the Bruton's Tyrosine Kinase Inhibitor Fenebrutinib and Methotrexate.
- Source :
-
The Journal of pharmacology and experimental therapeutics [J Pharmacol Exp Ther] 2019 Oct; Vol. 371 (1), pp. 202-207. Date of Electronic Publication: 2019 Aug 01. - Publication Year :
- 2019
-
Abstract
- Fenebrutinib (GDC-0853) is an orally administered small molecule inhibitor of Bruton's tyrosine kinase being investigated for treatment of rheumatoid arthritis in patients with inadequate responses to methotrexate (MTX). This study interrogated the potential for pharmacokinetic drug interactions between fenebrutinib and MTX. Eighteen healthy male subjects were enrolled in the study. They received a single oral dose of MTX (7.5 mg) on day 1 followed by a 13-day washout period. Subsequently, on days 15-20 the participants received 200 mg of fenebrutinib twice daily. On day 21, they received a 7.5 mg dose of MTX and a 200 mg dose of fenebrutinib under fasting conditions. The geometric mean ratios of MTX area under the plasma concentration-time curve (AUC) and C <subscript>max</subscript> on day 21 relative to day 1 (90% confidence interval [CI]) were 0.96 (0.88-1.04) and 1.05 (0.94-1.18), respectively. The geometric mean ratios of fenebrutinib AUC and C <subscript>max</subscript> for day 21 relative to day 20 (90% CI) were 1.03 (0.95-1.11) and 1.02 (0.90-1.15), respectively. The combination treatment was well tolerated, with an adverse event profile similar to that reported in other MTX trials. These results indicate that there is no clinically significant pharmacokinetic interaction between fenebrutinib and MTX.<br /> (Copyright © 2019 The Author(s).)
- Subjects :
- Adult
Agammaglobulinaemia Tyrosine Kinase antagonists & inhibitors
Antirheumatic Agents administration & dosage
Antirheumatic Agents adverse effects
Drug Interactions
Humans
Male
Methotrexate administration & dosage
Methotrexate adverse effects
Middle Aged
Piperazines administration & dosage
Piperazines adverse effects
Protein Kinase Inhibitors administration & dosage
Protein Kinase Inhibitors adverse effects
Pyridones administration & dosage
Pyridones adverse effects
Antirheumatic Agents pharmacokinetics
Methotrexate pharmacokinetics
Piperazines pharmacokinetics
Protein Kinase Inhibitors pharmacokinetics
Pyridones pharmacokinetics
Subjects
Details
- Language :
- English
- ISSN :
- 1521-0103
- Volume :
- 371
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- The Journal of pharmacology and experimental therapeutics
- Publication Type :
- Academic Journal
- Accession number :
- 31371481
- Full Text :
- https://doi.org/10.1124/jpet.119.257089