Evidence map›Paper›PMID 25503589›Full record

ArticleClinical pharmacokinetics2015

Pharmacokinetics of clobazam and N-desmethylclobazam in children with dravet syndrome receiving concomitant stiripentol and valproic Acid.

Vincent Jullien, Stéphanie Chhun, Elisabeth Rey, Olivier Dulac, Michel Tod, Catherine Chiron, Gérard Pons

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Article in Clinical pharmacokinetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 12% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Review
  6. Observational
  7. Article
  8. Pharmacotherapy for Dravet Syndrome.Paediatric drugs · 2016
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 1 country.

Vincent JullienInserm U1129, Paris, France, vincent.jullien@egp.aphp.fr.
Stéphanie Chhun
Elisabeth Rey
Olivier Dulac
Michel Tod
Catherine Chiron
Gérard Pons
CEA Paris-Saclay · FRDélégation Paris 5 · FRHôpital Européen · FRUniversité Claude Bernard Lyon 1 · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimThe aim of this study was to describe the pharmacokinetics of clobazam and its active metabolite N-desmethylclobazam (N-CLB) in children with Dravet syndrome receiving the stiripentol/valproic acid/clobazam combination therapy of reference and to determine the concentrations of clobazam and N-CLB obtained in this population for the usual 0.2 mg/kg twice-daily dose.

methodsThirty-five children with epilepsy were included in a prospective population pharmacokinetic study (using NONMEM(®) software). Four blood samples were drawn per patient. Area under the plasma concentration-time curve (AUC) and trough concentration (C trough) values for clobazam and N-CLB were simulated for 12,000 theoretical children weighing between 10 and 60 kg.

resultsThe pharmacokinetics of clobazam were described by a one-compartment model with first-order absorption, and elimination, formation and elimination of N-CLB were also first-order processes. The apparent total clearance (CL/F) and distribution volume (V CLB/F) of clobazam and the elimination rate constant of N-CLB (Kem) were related to body weight by allometric equations. Mean population estimates (% inter-individual variability) were 1.23 L/h (29%) for CL/F, 39.1 L (18%) for V CLB/F and 0.0706 h(-1) (26%) for Kem. The AUC values for clobazam and N-CLB were found to increase by 100% when bodyweight increased from 10 to 60 kg, and the simulated C trough values were higher than the currently accepted target values (0.03-0.3 mg/L for clobazam and 0.3-3 mg/L for N-CLB).

conclusionThis is the first simultaneous pharmacokinetic model for clobazam and N-CLB in epileptic children. Indicative values for the routine therapeutic drug monitoring of clobazam in children with Dravet syndrome treated by stiripentol are provided. The possible consequences of the weight-related changes on clobazam and N-CLB exposures should be further evaluated.

Indexed as

AnticonvulsantsBenzodiazepinesBody WeightChildChild, PreschoolClobazamDioxolanesDrug InteractionsDrug Therapy, CombinationEpilepsies, MyoclonicFemaleHumansMaleProspective StudiesRandomized Controlled Trials as TopicValproic AcidAnticonvulsantsBenzodiazepinesClobazamDioxolanesN-desmethylclobazamstiripentolValproic Acid

Identifiers

PMID25503589
OpenAlexW1968443815

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.