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.

Sponsor

SK Life Science, Inc. (Industry)

Overall Status

Completed

CT.gov ID

NCT00991757

Collaborator

(none)

991

Enrollment

Arm

Duration (Months)

Study Details

Study Description

Brief Summary

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.

Condition or Disease	Intervention/Treatment	Phase
Epilepsy Complex Partial Seizures Epilepsy, Complex Partial Epilepsies, Partial	Drug: carisbamate	Phase 3

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 Design

Study Type:

Interventional

Actual Enrollment :

991 participants

Allocation:

Non-Randomized

Intervention Model:

Single Group Assignment

Masking:

None (Open Label)

Primary Purpose:

Treatment

Official Title:

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

Study Start Date :

Feb 1, 2007

Actual Primary Completion Date :

Oct 1, 2010

Actual Study Completion Date :

Oct 1, 2010

Arms and Interventions

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).	Drug: 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).

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).

Drug: 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).

Outcome Measures

Primary Outcome Measures

Worsening of seizures, including rates of status epilepticus. [Up to approximately 48 months]

Secondary Outcome Measures

Quality of Life in Epilepsy-31-Problems (QOLIE-31-P) [month 6]

Eligibility Criteria

Criteria

Ages Eligible for Study:

16 Years and Older

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

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

Contacts and Locations

Locations

No locations specified.

Sponsors and Collaborators

SK Life Science, Inc.

Investigators

Study Director: Johnson & Johnson Pharmaceutical Research & Development, L.L. C. Clinical Trial, Johnson & Johnson Pharmaceutical Research & Development, L.L.C.