ArticleClinical drug investigation2022
Evaluation of the Effect of Uridine Diphosphate-Glucuronosyltransferases (UGT) Inhibition by Valproic Acid on Vixotrigine Pharmacokinetics in Healthy Volunteers.
Article in Clinical drug investigation, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03385525 (A Phase 1, Open-label, Fixed-sequence Study to Evaluate the Effect of UGT Inhibition by Valproic Acid on the Pharmacokinetics of BIIB074 in Healthy Subjects), which is not on this map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Phase 1, Open-label, Fixed-sequence Study to Evaluate the Effect of UGT Inhibition by Valproic Acid on the Pharmacokinetics of BIIB074 in Healthy Subjects
Who cites it
2 citing papers in PubMed, 3 citations in OpenAlex.
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Corrections and comments
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Authors and funding
5 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
objectiveVixotrigine is a voltage-dependent and use-dependent sodium channel blocker in development for the treatment of neuropathic pain. Metabolism of vixotrigine is primarily through glucuronidation, resulting in the major M13 metabolite. Two additional major metabolites formed are M14 and M16. This study was designed to evaluate the effects of a uridine diphosphate-glucuronosyltransferase inhibitor, valproic acid, on vixotrigine pharmacokinetics.
methodsThis open-label, fixed-sequence, phase I study enrolled 30 healthy volunteers who received a single dose of vixotrigine 150 mg on day 1 and day 16 following an 8-h fast. On days 8-22, volunteers received valproic acid 500 mg three times daily. A mixed-effects model was used to analyze the effect of valproic acid on the natural log-transformed pharmacokinetic parameters of vixotrigine and its metabolites including maximum concentration and area under the concentration-time curve from time zero to infinity.
resultsVixotrigine systemic exposure (area under the concentration-time curve from time zero to infinity) was increased by approximately 70% following the addition of valproic acid with a negligible effect on maximum concentration. Valproic acid administration also impacted vixotrigine metabolites: M13 exposure decreased by approximately 50% and M13 maximum concentration decreased by approximately 70%; increased exposure was noted for the M14 (approximately 100%) and M16 (approximately 70%) metabolites.
conclusionsValproic acid, a uridine diphosphate-glucuronosyltransferase inhibitor, significantly increased vixotrigine systemic exposure. CLINICAL
trial registrationClinicalTrials.gov Identifier: NCT03385525.
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