NCT00855738

Brief Summary

Assessment of the efficacy under daily clinical conditions of the new antiepileptic drugs (AEDs) gabapentin, lamotrigine, levetiracetam, oxcarbazepine, pregabalin, tiagabine and topiramate, used as first-choice combination therapy (bitherapy) in patients with focal epilepsy.

Trial Health

100
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
111

participants targeted

Target at P50-P75 for phase_4

Timeline
Completed

Started May 2007

Typical duration for phase_4

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 1, 2007

Completed
1.8 years until next milestone

First Submitted

Initial submission to the registry

March 3, 2009

Completed
1 day until next milestone

First Posted

Study publicly available on registry

March 4, 2009

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2009

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

June 1, 2009

Completed
1.1 years until next milestone

Results Posted

Study results publicly available

July 23, 2010

Completed
Last Updated

January 25, 2021

Status Verified

November 1, 2010

Enrollment Period

2.1 years

First QC Date

March 3, 2009

Results QC Date

June 23, 2010

Last Update Submit

January 21, 2021

Conditions

Keywords

epilepsy antiepileptic biotherapy

Outcome Measures

Primary Outcomes (1)

  • Percent of Participants Classified as Responders

    Responder = decrease in number of seizures by \>=50 percent (%) during the last 3 months of treatment before discontinuation (assessed at Month 3 and Month 6) versus the number of seizures that occurred during the 3 months before the baseline visit (baseline).

    Baseline, Month 3, Month 6 (last 3 months of treatment)

Secondary Outcomes (21)

  • Percent of Participants With Reduction in Number of Seizures >=25% and >=75% During the Last 3 Months of Treatment

    Baseline, Month 3, Month 6 (last 3 months of treatment)

  • Percent of Seizure-free Participants During the Last 3 Months Before Discontinuation

    Baseline, Month 3, Month 6 (last 3 months of treatment)

  • Percent Change From Baseline in the Median Number of Seizures During the Last 3 Months of Treatment

    Baseline, Month 3, Month 6 (last 3 months of treatment)

  • Percent of Days Without Crisis During the Study

    Baseline through Month 6 (or end of treatment)

  • Time to First Seizure

    Baseline to Month 6 (or end of treatment)

  • +16 more secondary outcomes

Study Arms (1)

1.0

OTHER
Drug: Gabapentin, Lamotrigine, Levetiracetam, Pregabalin, Oxcarbacepine, Tiagabine, Topiramate, Zonisamide

Interventions

* Gabapentin: up to 3.600 mg/d * Lamotrigine: up to 400 mg/d * Levetiracetam: up to 3.000 mg/d * Pregabalin: up to 600 mg/d * Oxcarbazepine: up to 2.400 mg/d * Tiagabine: up to 30 mg/d * Topiramate: up to 400 mg/d * Zonisamide: up to 500 mg/d

Also known as: Neurontin, Lamictal, Lyrica, Keppra, Topamax, Gabatril, Episen, Zonegran
1.0

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Aged 18 years or older.
  • Diagnosis of focal epilepsy.
  • Previous failure of one or more AEDs used in monotherapy.
  • Background treatment with an antiepileptic drug.
  • The investigator has considered that the patient must start treatment with some of the seven new AEDs in combination therapy: lamotrigine, levetiracetam, gabapentin, oxcarbazepine, pregabalin, tiagabine and/or topiramate.
  • History of seizures in the patient in the past 3 months.
  • The patient or legal guardian must be able to understand the characteristics of the study and fill in the seizure diaries.
  • Written informed consent.

You may not qualify if:

  • Inability to comply with the study requirements.
  • Diagnosis of generalized epilepsy or inability to establish if focal or generalized.
  • Presence of serious or uncontrolled systemic disease, serious psychiatric disease or progressive neurological disease.
  • History of alcoholism, drug addiction, or abuse of medicines in the past two years.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Related Links

MeSH Terms

Conditions

Epilepsies, Partial

Interventions

GabapentinLamotrigineLevetiracetamPregabalinTiagabineTopiramateZonisamide

Condition Hierarchy (Ancestors)

EpilepsyBrain DiseasesCentral Nervous System DiseasesNervous System Diseases

Intervention Hierarchy (Ancestors)

AminesOrganic Chemicalsgamma-Aminobutyric AcidAminobutyratesButyratesAcids, AcyclicCarboxylic AcidsCyclohexanecarboxylic AcidsAcids, CarbocyclicCyclohexanesCycloparaffinsHydrocarbons, AlicyclicHydrocarbons, CyclicHydrocarbonsAmino AcidsAmino Acids, Peptides, and ProteinsTriazinesHeterocyclic Compounds, 1-RingHeterocyclic CompoundsAcetamidesAmidesAcetatesPyrrolidinonesPyrrolidinesNipecotic AcidsAcids, HeterocyclicPiperidinesFructoseHexosesMonosaccharidesSugarsCarbohydratesKetosesSulfonamidesSulfonesSulfur CompoundsIsoxazolesAzoles

Limitations and Caveats

This study was cancelled with 111 patients enrolled due to lack of recruitment, and inability to analyze the study by treatment groups. Seizures were analyzed by 3 month data instead of 2 month data as originally planned.

Results Point of Contact

Title
Pfizer ClinicalTrials.gov Call Center
Organization
Pfizer, Inc.

Study Officials

  • Pfizer CT.gov Call Center

    Pfizer

    STUDY DIRECTOR

Publication Agreements

PI is Sponsor Employee
No
Restriction Type
OTHER
Restrictive Agreement
Yes

Study Design

Study Type
interventional
Phase
phase 4
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 3, 2009

First Posted

March 4, 2009

Study Start

May 1, 2007

Primary Completion

June 1, 2009

Study Completion

June 1, 2009

Last Updated

January 25, 2021

Results First Posted

July 23, 2010

Record last verified: 2010-11