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Pharmacokinetics and Optimal Dosing of Levetiracetam in Critically Ill Patients Undergoing Continuous Renal Replacement Therapy (LEVCRRT)

31 octobre 2026 mis à jour par: Supanat Khueankaew, PharmD, Chulalongkorn University

Levetiracetam may be removed during continuous renal replacement therapy (CRRT), potentially affecting drug concentrations and seizure control. The optimal dosing regimen for critically ill patients receiving CRRT remains unclear. This observational study will investigate the pharmacokinetics of levetiracetam in critically ill adult patients receiving CRRT. Blood, CRRT effluent, and urine samples will be collected throughout one dosing interval to measure levetiracetam concentrations. The data will be used to develop a population pharmacokinetic model and perform pharmacokinetic/pharmacodynamic modeling and Monte Carlo simulations to evaluate dosing regimens and estimate the probability of achieving predefined drug concentration or exposure targets. The findings may help identify an appropriate levetiracetam dosing regimen for critically ill patients receiving CRRT.

Aperçu de l'étude

Statut

Pas encore de recrutement

Les conditions

Intervention / Traitement

Type d'étude

Observationnel

Inscription (Estimé)

15

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Lieux d'étude

    • Bangkok
      • Pathum Wan, Bangkok, Thaïlande, 10330
        • King Chulalongkorn Memorial Hospital
        • Contact:
        • Contact:
          • Weerachai Chaijamorn, BSc(Pharm), BCP, FACP, BCPS
          • Numéro de téléphone: +6622188403
          • E-mail: weerachai.c@chula.ac.th

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans et plus (Adulte, Adulte plus âgé)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

Méthode d'échantillonnage

Échantillon non probabiliste

Population étudiée

Critically ill adult patients aged 18 years or older admitted to ICUs who receive levetiracetam during CRRT. Eligible patients must have received CRRT for at least 24 hours and meet the study's inclusion and exclusion criteria.

La description

Inclusion Criteria:

  • Adults aged 18 years or older.
  • Patients admitted to any ICUs.
  • Patients receiving CRRT for at least 24 hours.
  • Hemodynamically stable patients, defined as having a SBP of at least 90 mmHg or a MAP of at least 60 mmHg, with the norepinephrine dose remaining stable or increasing by no more than 0.1 mcg/kg/min during the preceding 6 hours.
  • Patients receiving intravenous or oral levetiracetam while receiving CRRT.
  • Patients admitted to any ICUs.
  • Patients receiving CRRT for at least 24 hours.

Exclusion Criteria:

  • Pregnant patients
  • Patients who are breastfeeding.
  • Patients with a known hypersensitivity to levetiracetam or who develop a hypersensitivity reaction requiring discontinuation of levetiracetam during the study.
  • Patients with cirrhosis classified as Child-Pugh-Turcotte class C.
  • Patients receiving extracorporeal membrane oxygenation (ECMO).
  • Patients who, or whose legally authorized representatives, do not provide informed consent for study participation.
  • Patients with an expected survival of less than 24 hours, as assessed by the attending physician.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Modèles d'observation: CASE_ONLY
  • Perspectives temporelles: PROSPECTIVE

Cohortes et interventions

Groupe / Cohorte
Intervention / Traitement
Critically Ill Adult Patients Receiving Levetiracetam During CRRT

Critically ill adult patients aged 18 years or older admitted to ICUs who receive levetiracetam during CRRT. Eligible participants must have received CRRT for at least 24 hours and meet the study's inclusion and exclusion criteria.

Levetiracetam administered as part of routine clinical care to critically ill adult patients receiving CRRT. The dose, dosing interval, and route of administration are determined by the treating physician. CRRT is prescribed and managed by the treating clinical team (nephrologist) as part of routine clinical care. The investigators do not assign or modify levetiracetam treatment or CRRT prescriptions for research purposes. Levetiracetam concentrations are measured in blood, CRRT effluent, and urine samples collected at protocol-specified time points to characterize its pharmacokinetic profile during CRRT.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Probability of target attainment for simulated levetiracetam dosing regimens
Délai: At completion of population pharmacokinetic model development and Monte Carlo simulations (approximately 23 months after study start).

Monte Carlo simulations based on the developed population pharmacokinetic model will be used to estimate the probability of target attainment (PTA) for each simulated levetiracetam dosing regimen. Target attainment will be evaluated according to the prespecified therapeutic concentration and AUC target criteria in the study protocol. Results will be reported as the probability or percentage of simulated patients achieving the target for each dosing regimen.

At completion of population pharmacokinetic model development and Monte Carlo simulations (approximately 23 months after study start).

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Levetiracetam plasma exposure based on the area under the concentration-time curve (AUC)
Délai: From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.

Levetiracetam AUC will be estimated using noncompartmental analysis of concentration-time data collected over a single dosing interval. Simultaneous samples will be collected from the pre-filter, post-filter, and effluent ports before dosing and at 7 prespecified time points after intravenous or oral administration.

From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.
Volume of distribution of levetiracetam
Délai: From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.

The volume of distribution of levetiracetam will be estimated using noncompartmental pharmacokinetic analysis based on the administered dose, elimination rate constant, and AUC.

From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.
Total clearance of levetiracetam
Délai: From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.

Total clearance of levetiracetam will be estimated using noncompartmental pharmacokinetic analysis based on the administered dose and AUC.

From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.
Levetiracetam sieving and saturation coefficients during continuous renal replacement therapy (CRRT)
Délai: From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.

The sieving coefficient (SC) and saturation coefficient (SA) of levetiracetam will be determined using pre-filter, post-filter, and effluent concentrations to evaluate drug transfer across the CRRT filter under different CRRT modalities, including continuous venovenous hemofiltration (CVVH), continuous venovenous hemodialysis (CVVHD), and continuous venovenous hemodiafiltration (CVVHDF).

From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.
Levetiracetam clearance by CRRT
Délai: From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.

Levetiracetam clearance by CRRT will be calculated based on pre-filter, post-filter, and effluent concentrations, together with replacement or dialysate flow rates according to the CRRT modality and dilution method, including CVVH, CVVHD, and CVVHDF.

From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.
Renal clearance of levetiracetam
Délai: From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.

Renal clearance of levetiracetam will be calculated based on urinary levetiracetam concentrations, urine volume, and plasma levetiracetam concentrations.

From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.
Non-renal clearance of levetiracetam
Délai: From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.

Non-renal clearance of levetiracetam will be estimated from total systemic drug clearance after accounting for renal and CRRT clearance.

From predose (0 hours) to pre-next dose (e.g., 12 hours) after initiation of levetiracetam administration.
Population typical value of levetiracetam clearance
Délai: Following completion of pharmacokinetic data collection and population pharmacokinetic analysis (approximately 23 months after study start).

The typical population value of levetiracetam clearance will be estimated using nonlinear mixed-effects modeling based on pre-filter and post-filter plasma concentration data collected from critically ill patients receiving CRRT.

Following completion of pharmacokinetic data collection and population pharmacokinetic analysis (approximately 23 months after study start).
Population typical value of levetiracetam volume of distribution
Délai: Following completion of pharmacokinetic data collection and population pharmacokinetic analysis (approximately 23 months after study start).

The typical population value of levetiracetam volume of distribution will be estimated using nonlinear mixed-effects modeling based on pre-filter and post-filter plasma concentration data collected from critically ill patients receiving CRRT.

Following completion of pharmacokinetic data collection and population pharmacokinetic analysis (approximately 23 months after study start).
Population typical value of CRRT-mediated levetiracetam clearance
Délai: Following completion of pharmacokinetic data collection and population pharmacokinetic analysis (approximately 23 months after study start).

The typical population value of CRRT-mediated levetiracetam clearance will be estimated using levetiracetam concentrations in plasma and effluent fluid, together with effluent flow rate, in critically ill patients receiving CRRT.

Following completion of pharmacokinetic data collection and population pharmacokinetic analysis (approximately 23 months after study start).

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Collaborateurs

Les enquêteurs

  • Directeur d'études: Weerachai Chaijamorn, BSc (Pharm), BCP, FACP, BCPS, Associate Professor, Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand

Publications et liens utiles

La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.

Publications générales

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

30 octobre 2026

Achèvement primaire (Estimé)

30 septembre 2027

Achèvement de l'étude (Estimé)

30 juin 2028

Dates d'inscription aux études

Première soumission

14 octobre 2026

Première soumission répondant aux critères de contrôle qualité

31 octobre 2026

Première publication (Réel)

5 novembre 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

5 novembre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

31 octobre 2026

Dernière vérification

1 octobre 2026

Plus d'information

Termes liés à cette étude

Autres numéros d'identification d'étude

  • 0551/2026

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

NON

Description du régime IPD

The study team does not currently plan to share IPD with other researchers due to concerns regarding patient confidentiality, participant privacy, and the potential risk of re-identification. Access to study data will be restricted to researchers in the Pharmacometrics for Health Sciences Research Group, Faculty of Pharmaceutical Sciences, Chulalongkorn University, and individuals authorized in writing by the researchers. Any future proposal to share IPD will be reviewed for consistency with the informed consent, ethics committee requirements, institutional policies, and applicable laws.

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .