An Open-Label Extension Study to Evaluate the Safety and Tolerability of RWJ 333369 as Adjunctive Therapy in Patients 16 Years and Older With Partial Onset Seizures.

June 10, 2013 updated by: SK Life Science, Inc.

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Multicenter Study to Evaluate the Efficacy, Safety, and Tolerability of RWJ 333369 as Adjunctive Therapy in Subjects With Partial Onset Seizures Followed by an Open-Label Extension Study: Open-Label Extension Period

The purpose of this open-label extension study is to demonstrate that RWJ-333369 is safe as long-term add-on treatment of partial onset seizures.

Study Overview

Detailed Description

333369EPY3004 is the open-label extension study that follows the double-blind studies 333369EPY3001 and 333369EPY3002 (NCT00425282 and NCT00433667, respectively). In an open label study such as 333369EPY3004, both the physician and the patient know the name of the assigned study medication. In a double blind study such as 333369EPY3001 and 333369EPY3002, neither the physician nor the patient knows the name of the assigned study medication. Patients who complete the double-blind treatment phase of studies 333369EPY3001 and 333369EPY3002 will be eligible to enter the open-label extension study 333369EPY3004 during which patients will transition through a blinded period to an open-label period with carisbamate (also referred to as RWJ-333369). There will be a blinded transition during which patients will take blinded study medication; after this, patients will then take unblinded, open-label study medication. No patients will receive placebo during the open-label extension. Safety assessments include the monitoring of the frequency, severity, and timing of adverse events, clinical laboratory test results, 12-lead electrocardiogram (ECG) recordings, vital signs measurements, physical and neurologic examinations, the Physician Withdrawal Checklist for symptoms of withdrawal for those patients who taper and/or discontinue study drug, and pregnancy tests for females of childbearing potential. Seizure counts will be obtained at every visit. A Quality of Life in Epilepsy questionnaire will be administered during the study. There is no statistical testing hypothesis for this study. Detailed Description update,5 Oct 2009. The Sponsor in conjunction with the DSMB agreed to amend the protocol to withdraw patients who develop signs of a drug hypersensitivity reaction. Open-label treatment with carisbamate 400 mg/day (up to a maximum of 1200mg/day) given in 2 equally divided doses BID for up to 1 year; study drug should be swallowed whole and not be chewed, divided, crushed, or dissolved.

Study Type

Interventional

Enrollment (Actual)

991

Phase

  • 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

Ages Eligible for Study

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

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • In order to enter the open label extension, the patient must have completed either Study 333369EPY3001 or Study 333369EPY3002.

Exclusion Criteria:

  • Generalized epilepsy
  • Currently experiencing seizures that cannot be counted accurately
  • Unstable medical disease, such as a recent heart attack or uncontrolled diabetes
  • Major psychiatric illness
  • Recent drug or alcohol abuse
  • Unable to swallow pills

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: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 001
carisbamate Open-Label Extension: 400 mg/day (up to a maximum of 1200mg/day) given in 2 equally divided doses for up to 1 year (or until carisbamate is available by prescription or the sponsor terminates the study).
Open-Label Extension: 400 mg/day (up to a maximum of 1200mg/day) given in 2 equally divided doses for up to 1 year (or until carisbamate is available by prescription or the sponsor terminates the study).

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Worsening of seizures, including rates of status epilepticus.
Time Frame: Up to approximately 48 months
Up to approximately 48 months

Secondary Outcome Measures

Outcome Measure
Time Frame
Quality of Life in Epilepsy-31-Problems (QOLIE-31-P)
Time Frame: month 6
month 6

Collaborators and Investigators

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

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

February 1, 2007

Primary Completion (Actual)

October 1, 2010

Study Completion (Actual)

October 1, 2010

Study Registration Dates

First Submitted

October 6, 2009

First Submitted That Met QC Criteria

October 7, 2009

First Posted (Estimate)

October 8, 2009

Study Record Updates

Last Update Posted (Estimate)

June 18, 2013

Last Update Submitted That Met QC Criteria

June 10, 2013

Last Verified

June 1, 2013

More Information

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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