Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT03739840 · ClinicalTrials.gov registry record · Phase 3

A Study to Test the Efficacy and Safety of Padsevonil as Treatment of Focal-onset Seizures in Adult Subjects With Drug-resistant Epilepsy

A Phase 3 study, sponsored by UCB Biopharma SRL.

Terminated
Registry status
Phase 3
Development phase
232
Enrollment target

NCT03739840: Clinical Trial Phase 3 study, sponsored by UCB Biopharma SRL.

NCT03739840 is a Phase 3 study that was terminated before completion, run by UCB Biopharma SRL. The registered enrollment target is 232 participants, below the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target (70% lower). According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT03739840, a Phase 3 study, was terminated before completion, sponsored by UCB Biopharma SRL.

TERMINATED
Registry status
Phase 3
Development phase
232 participants
Enrollment target

Study Summary

The purpose of the study is to evaluate the efficacy, safety and tolerability of the 3 selected dose regimens of padsevonil (PSL) administered concomitantly with up to 3 anti-epileptic drugs (AEDs) compared with placebo for treatment of observable focal-onset seizures in subjects with drug-resistant epilepsy.

Primary Outcome

During the study, participants kept diaries to record daily seizure activity. Seizure frequency refers to 28-day adjusted frequency. Seizure frequency was based on investigator assessment of participants' reports of daily seizure type and frequency. Observable focal-onset seizures refer to Type IA1, IB, and IC (ILAE Classification of Epileptic Seizures, 1981). Based on ANCOVA on change in log-transformed seizure frequency from Baseline, with treatment group as the main factor, Baseline log-trans

Interventions

  • DRUG Placebo
  • DRUG Padsevonil

Trial Details

FieldValue
Enrollment Target 232 participants
Start Date 2019-03-06
Est. Completion 2020-09-28
Phase Phase 3
UCB Biopharma SRL

82 total trials

Why NCT03739840 stopped before completion

NCT03739840 is an interventional study that assigns participants to a tested intervention. The registered 232 participants enrollment target is mid-sized for trials with a published cap, below the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target (70% lower).

The record links to 0 conditions, and to 2 interventions - of which Placebo is the first listed.

NCT03739840 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT03739840 about?

NCT03739840 is a clinical study titled "A Study to Test the Efficacy and Safety of Padsevonil as Treatment of Focal-onset Seizures in Adult Subjects With Drug-resistant Epilepsy". The purpose of the study is to evaluate the efficacy, safety and tolerability of the 3 selected dose regimens of padsevonil (PSL) administered concomitantly with up to 3 anti-epileptic drugs (AEDs) compared with placebo for treatment of observable focal-onset seizures in subjects with drug-resistant...

What is the current status of trial NCT03739840?

This trial is currently terminated. It is a Phase 3 study. The enrollment target is 232 participants. The study started on 2019-03-06. Estimated completion is 2020-09-28.

What interventions are being tested in trial NCT03739840?

The interventions under investigation include: Placebo (DRUG), Padsevonil (DRUG).

Who is sponsoring clinical trial NCT03739840?

This trial is sponsored by UCB Biopharma SRL, which has 82 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT03739840's enrollment target sits among peer trials

232 1298th of 2000 higher than 701 of 2,000 other Phase 3 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 3 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT01356290 · 232 participants · Phase 2

    Antiangiogenic Therapy for Children With Recurrent Medulloblastoma, Ependymoma, ATRT and Rare CNS Tumors

  • NCT04753359 · 232 participants · NA

    Mediterranean Diet and Weight Loss: Targeting the Bile Acid/Gut Microbiome Axis to Reduce Colorectal Cancer

  • NCT04770870 · 232 participants · NA

    Post Approval Study2: Hintermann Series H3 Total Ankle Replacement System

  • NCT05948943 · 232 participants · Phase 2

    Alpelisib in Pediatric and Adult Patients With Lymphatic Malformations Associated With a PIK3CA Mutation.

Similar registry start date

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

  • NCT07125183 · started 2026-12 · Phase 2

    Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma

  • NCT07292298 · started 2026-11 · Phase 2

    Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates

  • NCT04263285 · started 2026-10 · NA

    Treatment of Depression Post-SCI

Source: ClinicalTrials.gov NCT03739840, the US trial registry maintained by the National Library of Medicine. NCT03739840 (mid enrollment · none site footprint · terminated) retrieved and formatted by PlainTrial, see methodology.