A Study of the Effectiveness and Safety of Topiramate Monotherapy in Patients With Recently Diagnosed Partial-Onset Seizure

November 12, 2010 updated by: Johnson & Johnson Pharmaceutical Research & Development, L.L.C.

Topiramate (RWJ-17021-000) Monotherapy Clinical Trial in Patients With Recently Diagnosed Partial-Onset Seizures

The purposes of this study are (1) to compare the effectiveness of two doses of topiramate and (2) to assess the safety of topiramate alone in the treatment of pediatric and adult patients with recently diagnosed epilepsy characterized by partial-onset seizures.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Topiramate is approved for treating epilepsy in combination with other epilepsy drugs, but not approved for treating epilepsy as sole treatment or in recently diagnosed epilepsy characterized by partial-onset seizures. This is a randomized, double-blind, parallel-group, multicenter trial to investigate the effectiveness and safety of topiramate in pediatric and adult patients with recently diagnosed epilepsy characterized by partial-onset seizures. There are four phases of this trial: Retrospective Baseline, Open-Treatment, Double-Blind, and Long-Term Extension. During the Retrospective Baseline Phase, eligibilities of the potential patients are evaluated. During the Open-Treatment Phase, patients receive 25 milligrams[mg] daily of topiramate to assess their ability to tolerate the medication. During the Double-Blind Phase, patients are randomized to a high or a low dose of topiramate. Patients continue to receive the study medication until one of the following occurs: (1) treatment fails; (2) 4 months have passed since the last patient was randomized; or (3) the patient withdraws from the study. Unless withdrawn from the study, the patient may enter the Long-Term Extension Phase and receive high dose topiramate (maximum of either 1,600mg daily for patients >= 14 years of age, or 24mg/kilogram[kg] for patients < 14 years of age) until the patient withdraws or the study is stopped by the sponsor. The study hypothesis is that topiramate will be effective and well tolerated in treating pediatric and adult patients with recently diagnosed epilepsy characterized by partial-onset seizures. Open-Treatment: topiramate 25mg daily by mouth for 7days. Double-Blind: low dose (50 mg or 25mg daily, depending on body weight) or high dose (500mg or 200mg daily, depending on body weight) for up to 4 months. Long-Term Extension: high dose (1600mg or 24mg/kg daily, maximum) for various duration.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
451

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

3 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Body weight between 25 kg and 110 kg (approximately 55-240 lb)
  • Diagnosis of epilepsy characterized by unprovoked partial-onset seizures that were diagnosed within the past three years
  • During the three-month Retrospective Baseline Phase, patients must have had at least one seizure, have had an average of no more than two seizures per month, and have had no more than three seizures in any given month. None of the seizures should occur in a cluster pattern
  • During the three-month Retrospective Baseline Phase, patients must receive either no other standard Anti-Epileptic Drug (AED), or be on one AED
  • Patients currently on one AED must be considered inadequately controlled
  • Must have evidence from computed tomography (CT) or magnetic resonance imaging (MRI) of the absence of an arteriovenous malformation or a progressive lesion such as a tumor.

Exclusion Criteria:

  • Patients who do not have epilepsy, such as patients with pseudoseizures or a treatable cause of seizures
  • Patients with benign rolandic epilepsy
  • Patients with progressive or degenerative disorders
  • Patients with a documented history of generalized tonic-clonic status epilepticus during the three month Retrospective Baseline Phase
  • Patients with a significant history (within the past two years) of medical disease that may impair their reliable participation in the trial or necessitate the use of medication not allowed by this protocol
  • Patients who are unable to take their medication either independently or with assistance.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time to exit during the double blind phase (2 partial onset seizures with or without a secondarily generalized component, a secondarily generalized tonic clonic seizure when none existed prior to this phase, or 1 episode of status epilepticus).

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Laboratory, vital signs, electrocardiogram data and adverse events reported during the trial.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Johnson & Johnson Pharmaceutical Research & Development, L.L.C.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 1, 1995

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 1, 2002

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 29, 2005

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 29, 2005

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 3, 2005

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 15, 2010

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 12, 2010

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2010

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • CR002503

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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