Clinical Trial: 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.

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

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

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.

Detailed Summary: 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 di
Sponsor: SK Life Science

Current Primary Outcome: Worsening of seizures, including rates of status epilepticus. [ Time Frame: Up to approximately 48 months ]

Original Primary Outcome: Determine the long-term safety and tolerability of RWJ 333369 as adjunctive treatment of partial onset seizures. Safety evaluation will include worsening of seizures, including rates of status epilepticus. [ Time Frame: 1-48 months ]

Current Secondary Outcome: Quality of Life in Epilepsy-31-Problems (QOLIE-31-P) [ Time Frame: month 6 ]

Original Secondary Outcome: Same as current

Information By: SK Life Science

Dates:
Date Received: October 6, 2009
Date Started: February 2007
Date Completion:
Last Updated: June 10, 2013
Last Verified: June 2013