A Phase 3 interventional study of Topiramate; Carbamazepine; Valproate in Epilepsy and Seizures, sponsored by Johnson & Johnson Pharmaceutical Research & Development, L.L.C.. Completed. Open to participants aged 6 Years and older. Per ClinicalTrials.gov, last updated 2011-06-08.
Sponsored by Johnson & Johnson Pharmaceutical Research & Development, L.L.C. · Phase 3, Interventional, and Treatment
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.
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.
1,805 studies on the registry are indexed under Epilepsy; 417 are open to participants now.
This study's enrollment of 865 is above the median of 50 across 1,206 interventional studies indexed under Epilepsy.
Browse Epilepsy studies →Johnson & Johnson Pharmaceutical Research & Development, L.L.C. is the lead sponsor of 458 studies on the registry; none are open to participants now.
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Exclusion Criteria:
Time to first seizure from Day 15 of the study
Time to first seizure from Day 1 of the study; time to exit from the study; proportion of seizure-free patients during the last 6 months of the double-blind period; safety evaluations conducted throughout the study
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This study is completed, as verified in Jan 2011. You cannot join it, but the record below documents what was studied.
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Johnson & Johnson Pharmaceutical Research & Development, L.L.C.