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CompletedNCT04627285Updated Aug 28, 2025Results posted

A Study to Test the Long-term Use of Oral Lacosamide in Pediatric Study Participants Who Completed NCT01964560 (EP0034) or NCT00938912 (SP848) and Received Lacosamide Treatment

A Phase 3 interventional study of Lacosamide in Epilepsy, sponsored by UCB Biopharma SRL. Completed at 15 sites in 6 countries. Open to participants aged 2 Years to 5 Years. Per ClinicalTrials.gov, last updated 2025-08-28.

Sponsored by UCB Biopharma SRL · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
48
Allocation
Not applicable
Ages
2 Years to 5 Years
Sex
All
01

Study summary

The purpose of the study is to assess the long-term use of lacosamide oral solution dosed at 2 mg/kg/day to 12 mg/kg/day when administered to pediatric study participants with epilepsy who have completed NCT01964560 (EP0034) or NCT00938912 (SP848).

02

Conditions studied

  • Epilepsy

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Keywords

  • Lacosamide
  • Vimpat
  • Epilepsy
  • Pediatric
03

In context

Epilepsy

1,805 studies on the registry are indexed under Epilepsy; 417 are open to participants now.

This study's enrollment of 48 is close to the median of 50 across 1,206 interventional studies indexed under Epilepsy.

Browse Epilepsy studies →

Lead sponsor

UCB Biopharma SRL is the lead sponsor of 128 studies on the registry; 19 are open to participants now.

Of its 69 completed or terminated interventional studies of FDA-regulated products, 48 (70%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
2 Years to 5 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Participant is male or female, aged \<6 years at the time of signing the Informed Consent Form (ICF)
  • Participant has completed participation in NCT01964560 (EP0034) or NCT00938912 (SP848)
  • Participant is expected to benefit from participation, in the opinion of the Investigator

Exclusion criteria

Exclusion Criteria:

  • Participant has any medical or psychiatric condition that, in the opinion of the Investigator, could jeopardize or would compromise the study participant's ability to participate in this study
  • Participant has a known hypersensitivity to any components of the study medication or comparative drugs as stated in this protocol
  • Participant is receiving any investigational drugs or using any experimental devices in addition to lacosamide (LCM)
  • Participant meets a mandatory withdrawal criterion (ie, MUST withdraw criterion) for NCT01964560 (EP0034) or NCT00938912 (SP848), or is experiencing an ongoing serious adverse event (SAE)
  • Sensitivity to any of the study interventions, or components thereof, or drug or other allergy that, in the opinion of the Investigator or Medical Monitor, contraindicates participation in the study
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
48 participants (actual)

Study arms

  • Experimental
    Lacosamide

    Subjects in this arm will receive various single doses of lacosamide

    Drug: Lacosamide

Interventions

  • DrugLacosamide

    * Pharmaceutical form: Oral-solution * Route of administration: Oral use Subjects will receive lacosamide in a pre-specified sequence during the Treatment Period.

06

What researchers measure

Primary outcomes

  1. Percentage of Participants With Treatment Emergent Adverse Events (TEAEs)

    An Adverse Event (AE) is any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment. An AE could therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. Treatment-emergent AEs were defined as those events which started on or after the date of first dose of LCM in EP0151, or events for which severity worsened on or after the date of first dose of LCM in EP0151. Adverse events which occurred within 30 days after final dose of LCM in EP0151 were considered treatment-emergent.

    Time frame: From visit 1 (Week 0) to the end of study visit (up to Week 214.42)

  2. Percentage of Participants Who Withdrew From Study Due to TEAEs

    An AE is any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment. An AE could therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. Treatment-emergent AEs were defined as those events which started on or after the date of first dose of LCM in EP0151, or events for which severity worsened on or after the date of first dose of LCM in EP0151. Adverse events which occurred within 30 days after final dose of LCM in EP0151 were considered treatment-emergent.

    Time frame: From visit 1 (Week 0) to the end of study visit (up to Week 214.42)

  3. Percentage of Participants Who Withdrew From Study Due to Serious Adverse Event (SAEs)

    A SAE is defined as results in death, is life-threatening, requires in patient hospitalization or prolongation of existing hospitalization, results in persistent disability/incapacity, is a congenital anomaly or birth defect, other important medical events which based on medical or scientific judgement may jeopardize the patients, or may require medical or surgical intervention to prevent any of the above. Only participants who discontinued the study due to SAEs are reported.

    Time frame: From visit 1 (Week 0) to the end of study visit (up to Week 214.42)

  4. Modal Daily Dose During the Study

    The modal daily LCM dose in milligram per kilogram (mg/kg/day) is defined as the daily Lacosamide dose the participant received for the longest duration in EP0151.

    Time frame: From visit 1 (Week 0) to the end of study visit (up to Week 214.42)

  5. Maximum Daily Dose During the Study

    Maximum daily dose is defined as the highest total daily dose a participant received in EP0151.

    Time frame: From visit 1 (Week 0) to the end of study visit (up to Week 214.42)

07

Results

Posted Aug 28, 2025

Participant flow

The study started to enroll participants in December 2020 and concluded in February 2025.

Participant flow — Overall Study
MilestoneLacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 Years
Started1929
Completed1225
Not completed74
Withdrew: Adverse event02
Withdrew: Lost to follow-up10
Withdrew: Withdrawal by subject11
Withdrew: Sponsor decision50
Withdrew: Participant left country; aunt informed the site01

Outcome measures

PrimaryPercentage of Participants With Treatment Emergent Adverse Events (TEAEs)

An Adverse Event (AE) is any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment. An AE could therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. Treatment-emergent AEs were defined as those events which started on or after the date of first dose of LCM in EP0151, or events for which severity worsened on or after the date of first dose of LCM in EP0151. Adverse events which occurred within 30 days after final dose of LCM in EP0151 were considered treatment-emergent.

Time frame:
From visit 1 (Week 0) to the end of study visit (up to Week 214.42)
Reported as:
Number · percentage of participants
Percentage of Participants With Treatment Emergent Adverse Events (TEAEs)
percentage of participantsLacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 Years
Percentage of Participants With Treatment Emergent Adverse Events (TEAEs)42.137.9
PrimaryPercentage of Participants Who Withdrew From Study Due to TEAEs

An AE is any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment. An AE could therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. Treatment-emergent AEs were defined as those events which started on or after the date of first dose of LCM in EP0151, or events for which severity worsened on or after the date of first dose of LCM in EP0151. Adverse events which occurred within 30 days after final dose of LCM in EP0151 were considered treatment-emergent.

Time frame:
From visit 1 (Week 0) to the end of study visit (up to Week 214.42)
Reported as:
Number · percentage of participants
Percentage of Participants Who Withdrew From Study Due to TEAEs
percentage of participantsLacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 Years
Percentage of Participants Who Withdrew From Study Due to TEAEs0.06.9
PrimaryPercentage of Participants Who Withdrew From Study Due to Serious Adverse Event (SAEs)

A SAE is defined as results in death, is life-threatening, requires in patient hospitalization or prolongation of existing hospitalization, results in persistent disability/incapacity, is a congenital anomaly or birth defect, other important medical events which based on medical or scientific judgement may jeopardize the patients, or may require medical or surgical intervention to prevent any of the above. Only participants who discontinued the study due to SAEs are reported.

Time frame:
From visit 1 (Week 0) to the end of study visit (up to Week 214.42)
Reported as:
Number · percentage of participants
Percentage of Participants Who Withdrew From Study Due to Serious Adverse Event (SAEs)
percentage of participantsLacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 Years
Percentage of Participants Who Withdrew From Study Due to Serious Adverse Event (SAEs)0.06.9
PrimaryModal Daily Dose During the Study

The modal daily LCM dose in milligram per kilogram (mg/kg/day) is defined as the daily Lacosamide dose the participant received for the longest duration in EP0151.

Time frame:
From visit 1 (Week 0) to the end of study visit (up to Week 214.42)
Reported as:
Mean · mg/kg/day
Modal Daily Dose During the Study
mg/kg/dayLacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 Years
Modal Daily Dose During the Study9.5 ± 2.410.0 ± 2.6
PrimaryMaximum Daily Dose During the Study

Maximum daily dose is defined as the highest total daily dose a participant received in EP0151.

Time frame:
From visit 1 (Week 0) to the end of study visit (up to Week 214.42)
Reported as:
Mean · mg/kg/day
Maximum Daily Dose During the Study
mg/kg/dayLacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 Years
Maximum Daily Dose During the Study9.5 ± 2.410.1 ± 2.6

Adverse events

Collected over From visit 1 (Week 0) to the end of study visit (up to Week 214.42). Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Lacosamide: >=2 to <4 Years0/19 (0%)2/19 (10.5%)5/19 (26.3%)
Lacosamide: >=4 to <6 Years2/29 (6.9%)5/29 (17.2%)4/29 (13.8%)
Most frequent serious events
Showing 10 of 13
Most frequent serious events
EventLacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 Years
BronchopneumoniaInfections and infestations1/190/29
PneumoniaInfections and infestations1/190/29
Septic shockInfections and infestations1/190/29
EpilepsyNervous system disorders1/190/29
Cardiac failure acuteCardiac disorders0/191/29
Developmental hip dysplasiaCongenital, familial and genetic disorders0/191/29
Device malfunctionGeneral disorders0/191/29
Sudden deathGeneral disorders0/191/29
Pneumonia necrotisingInfections and infestations0/191/29
Rhinovirus infectionInfections and infestations0/191/29
Most frequent other events
Most frequent other events
EventLacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 Years
Upper respiratory tract infectionInfections and infestations5/194/29

Baseline characteristics

The SS consisted of all study participants who signed an informed consent form (ICF) and took at least 1 dose of study medication in this study.

Age, Continuous
Age, Continuous(years)Lacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 YearsTotal
Mean2.888 ± 0.5185.180 ± 0.6424.273 ± 1.277
Age, Customized
Age, Customized(Participants)Lacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 YearsTotal
Greater than or equal to (>=) 24 months to less than (<) 12 years192948
Sex: Female, Male
Sex: Female, Male(Participants)Lacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 YearsTotal
Female6915
Male132033
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Lacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 YearsTotal
Race — Asian112
Race — White182846
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Lacosamide: >=2 to <4 YearsLacosamide: >=4 to <6 YearsTotal
Ethnicity — Hispanic or Latino033
Ethnicity — Not Hispanic or Latino192645
08

Study locations

15 sites
  • Ep0151 620
    Tbilisi, Georgia
  • Ep0151 621
    Tbilisi, Georgia
  • Ep0151 622
    Tbilisi, Georgia
  • Ep0151 361
    Budapest, Hungary
  • Ep0151 362
    Budapest, Hungary
  • Ep0151 650
    Chisinau, Moldova
  • Ep0151 581
    Bucharest, Romania
  • Ep0151 582
    Iași, Romania
  • Ep0151 577
    Timișoara, Romania
  • Ep0151 224
    Taipei, Taiwan
  • Ep0151 602
    Dnipro, Ukraine
  • Ep0151 609
    Dnipropetrovsk, Ukraine
  • Ep0151 606
    Kiev, Ukraine
  • Ep0151 682
    Uzhhorod, Ukraine
  • Ep0151 603
    Vinnytsia, Ukraine
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References and documents

Study documents

  • Study protocol · Oct 12, 2023
  • Statistical analysis plan · Dec 8, 2020

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: Yes — Data from this trial may be requested by qualified researchers six months after product approval in the US and/or Europe, or global development is discontinued, and 18 months after trial completion. Investigators may request access to anonymized individual patient-level data and redacted trial documents which may include: analysis-ready datasets, study protocol, annotated case report form, statistical analysis plan, dataset specifications, and clinical study report. Prior to use of the data, proposals need to be approved by an independent review panel at www.Vivli.org and a signed data sharing agreement will need to be executed. All documents are available in English only, for a prespecified time, typically 12 months, on a password protected portal. This plan may change if the risk of re-identifying trial participants is determined to be too high after the trial is completed; in this case and to protect participants, individual patient-level data would not be made available.

Supporting information: Study protocol, Sap, Csr

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 28, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04627285
Lead sponsor
UCB Biopharma SRL
Responsible party
Sponsor
First posted
Nov 13, 2020
Start date
Dec 28, 2020
Primary completion
Feb 12, 2025
Completion
Feb 12, 2025
Results posted
Aug 28, 2025
Last update
Aug 28, 2025

Study contacts

UCB Cares
study director · 001 844 599 2273 (UCB)

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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