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Sponsored by: |
Johnson & Johnson Pharmaceutical Research & Development, L.L.C. |
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Information provided by: | Johnson & Johnson Pharmaceutical Research & Development, L.L.C. |
ClinicalTrials.gov Identifier: | NCT00236717 |
The purpose of this study is to compare the effectiveness and safety of topiramate to standard antiepileptic drugs in children and adults with newly diagnosed epilepsy.
Condition | Intervention | Phase |
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Epilepsy Seizures |
Drug: topiramate |
Phase III |
Study Type: | Interventional |
Study Design: | Treatment, Randomized, Double-Blind, Active Control, Parallel Assignment, Safety/Efficacy Study |
Official Title: | TOPAMAX (Topiramate) Monotherapy Comparison Trial to Standard Monotherapy in the Treatment of Newly Diagnosed Epilepsy (RWJ-17021-000); Phase IIIB |
Estimated Enrollment: | 600 |
Study Start Date: | August 1997 |
Estimated Study Completion Date: | November 2000 |
Topiramate is a drug that is currently widely used for the treatment of seizures in adults and pediatric patients (2 to 16 years of age). This is a randomized, double-blind, parallel-group study to evaluate the effectiveness and safety of two dosages of topiramate (100 or 200mg per day) compared with standard antiepileptic drugs (carbamazepine or valproate) in patients with newly diagnosed epilepsy. The study is composed of three phases: baseline (up to 7 days), double-blind treatment, and a blinded extension. The double-blind phase is divided into two periods: titration, in which the dose of drug is gradually increased (approximately 35 days), and stabilization (of variable duration, with regular scheduled visits up to 92 days and then every 3 months thereafter). The dose of study drug remains constant during the stabilization period. In the blinded extension, patients completing the double blind phase are given the opportunity to take the other study medication in a blinded fashion (patient unaware of identity of the drug). This phase continues until the patient leaves the study or the data base for the double blind phase is finalized. The primary assessment of effectiveness is the time to first seizure from Day 15 of the study. Safety assessments include the frequency of adverse events during the study, results of clinical laboratory tests (hematology and biochemistry), measurements of vital signs and body weight, and physical examination findings. The study hypothesis is that the 200mg dose of topiramate is superior to the 100mg dose in delaying the time to first seizure and is well-tolerated.
Oral topiramate (25milligram [mg] or 50mg capsules or tablets),starting at 25mg/day (Week 1),increasing to 100mg or 200mg/day (Week 5).Increasing carbamazepine to 600mg/day or valproate to 1250mg/day (Week 5).Maximum dosages continue for a variable time and then taper over 4 weeks to starting dose.
Ages Eligible for Study: | 6 Years and older |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
Exclusion Criteria:
Study Director: | Johnson & Johnson Pharmaceutical Research and Development, L.L.C. Clinical Trial | Johnson & Johnson Pharmaceutical Research & Development, L.L.C. |
Study ID Numbers: | CR005461 |
Study First Received: | October 7, 2005 |
Last Updated: | May 11, 2007 |
ClinicalTrials.gov Identifier: | NCT00236717 |
Health Authority: | United States: Food and Drug Administration |
Seizures Topiramate Epilepsy Antiepileptic Prophylaxis |
Signs and Symptoms Epilepsy Seizures Topiramate |
Neurologic Manifestations Central Nervous System Diseases Brain Diseases |
Anti-Obesity Agents Therapeutic Uses Physiological Effects of Drugs Nervous System Diseases Protective Agents |
Neuroprotective Agents Central Nervous System Agents Pharmacologic Actions Anticonvulsants |