Evidence map›Paper›PMID 21618059›Full record

ArticleThe AAPS journal2011

Development of a complex parent-metabolite joint population pharmacokinetic model.

Julie Bertrand, Céline M Laffont, France Mentré, Marylore Chenel, Emmanuelle Comets

Abstract read
In one paragraph

Article in The AAPS journal, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
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

23 citing papers in PubMed.

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  15. Population Pharmacokinetic Model for Tramadol and O-desmethyltramadol in Older Patients.European journal of drug metabolism and pharmacokinetics · 2022
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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

5 authors.

Julie BertrandINSERM, UMR, Univ Paris Diderot, Sorbonne Paris Cité, UMR, France. julie.bertrand@inserm.fr
Céline M Laffont
France Mentré
Marylore Chenel
Emmanuelle Comets

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to develop a joint population pharmacokinetic model for an antipsychotic agent in development (S33138) and its active metabolite (S35424) produced by reversible metabolism. Because such a model leads to identifiability problems and numerical difficulties, the model building was performed using the FOCE-I and the Stochastic Approximation Expectation Maximization (SAEM) estimation algorithms in NONMEM and MONOLIX, respectively. Four different structural models were compared based on Bayesian information criteria. Models were first written as ordinary differential equations systems and then in closed form (CF) to facilitate further analyses. The impact of polymorphisms on genes coding for the CYP2C19 and CYP2D6 enzymes, respectively involved in the parent drug and the metabolite elimination were investigated using permutation Wald test. The parent drug and metabolite plasma concentrations of 101 patients were analyzed on two occasions after 4 and 8 weeks of treatment at 1, 3, 6, and 24 h following daily oral administration. All configurations led to a two compartment model with back-transformation of the metabolite into the parent drug and a first-pass effect. The elimination clearance of the metabolite through other processes than back-transformation was decreased by 35% [9-53%] in CYP2D6 poor metabolizer. Permutation tests were performed to ensure the robustness of the analysis, using SAEM and CF. In conclusion, we developed a complex joint pharmacokinetic model adequately predicting the impact of CYP2D6 polymorphisms on the parent drug and its metabolite concentrations through the back-transformation mechanism.

Indexed as

Models, BiologicalPolymorphism, GeneticAcetanilidesAlgorithmsAntipsychotic AgentsAryl Hydrocarbon HydroxylasesBenzopyransChromatography, LiquidClinical Trials, Phase I as TopicClinical Trials, Phase II as TopicComputer SimulationCytochrome P-450 CYP2C19Cytochrome P-450 CYP2D6Dose-Response Relationship, DrugHumansMaleAcetanilidesAntipsychotic AgentsAryl Hydrocarbon HydroxylasesBenzopyransCYP2C19 protein, humanCytochrome P-450 CYP2C19Cytochrome P-450 CYP2D6N-(4-(2-(8-cyano-1,3a,4,9b-tetrahydro(1)benzopyrano(3,4-c)pyrrol-2(3H)-yl)ethyl)phenyl)acetamide

Identifiers

PMID21618059
PMCPMC3160156

What OpenQuestion holds

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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.