Evidence map›Paper›PMID 35456645›Full record

ArticlePharmaceutics2022

Population Pharmacokinetics of Valproic Acid in Pediatric and Adult Caucasian Patients.

Paulo Teixeira-da-Silva, Jonás Samuel Pérez-Blanco, Dolores Santos-Buelga, María José Otero, María José García

Abstract read
In one paragraph

Article in Pharmaceutics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

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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.

Paulo Teixeira-da-SilvaPharmaceutical Sciences Department, Universidad de Salamanca, 37007 Salamanca, Spain.ORCID 0000-0003-4677-4784
Jonás Samuel Pérez-BlancoPharmaceutical Sciences Department, Universidad de Salamanca, 37007 Salamanca, Spain.ORCID 0000-0002-1232-1763
Dolores Santos-BuelgaPharmaceutical Sciences Department, Universidad de Salamanca, 37007 Salamanca, Spain.ORCID 0000-0002-8236-6537
María José OteroInstitute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain.ORCID 0000-0001-6468-8842
María José GarcíaPharmaceutical Sciences Department, Universidad de Salamanca, 37007 Salamanca, Spain.ORCID 0000-0003-2760-7083

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

(1) Background: The aim of this study was to explore the valproic acid (VPA) pharmacokinetic characteristics in a large population of pediatric and adult Caucasian patients and to establish a robust population pharmacokinetic (PopPK) model. (2) Methods: A total of 2527 serum VPA samples collected from 1204 patients included in a therapeutic drug monitoring program were retrospectively analyzed. Patients were randomly assigned to either a model development group or an external evaluation group. PopPK analysis was performed on 1751 samples from 776 patients with NONMEM using a nonlinear mixed-effect modelling approach. The influence of demographic, anthropometric, treatment and comedication variables on the apparent clearance (CL/F) of VPA was studied. The bootstrap method was used to evaluate the final model internally. External evaluation was carried out using 776 VPA serum samples from 368 patients. (3) Results: A one-compartment model with first-order absorption and elimination successfully described the data. The final model included total body weight, age and comedication with phenytoin, phenobarbital and carbamazepine with a significant impact on VPA elimination. Internal and external evaluations demonstrated the good predictability of the model. (4) Conclusions: A PopPK model of VPA in Caucasian patients was successfully established, which will be helpful for model-informed precision dosing approaches in clinical patient care.

Indexed as

drug interactionsepilepsyNONMEMpopulation pharmacokineticstherapeutic drug monitoringvalproic acid

Identifiers

PMID35456645
PMCPMC9031051

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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.