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Efficacy and safety of eslicarbazepine acetate versus controlled-release carbamazepine monotherapy in newly diagnosed epilepsy: A phase III double-blind, randomized, parallel-group, multicenter study.

Journal article
Authors Eugen Trinka
Elinor Ben-Menachem
Pedro A Kowacs
Christian Elger
Birgit Keller
Kurt Löffler
José Francisco Rocha
Patrício Soares-da-Silva
Published in Epilepsia
Volume 59
Issue 2
Pages 479-491
ISSN 1528-1167
Publication year 2018
Published at Institute of Neuroscience and Physiology
Pages 479-491
Language en
Links dx.doi.org/10.1111/epi.13993
www.ncbi.nlm.nih.gov/entrez/query.f...
Subject categories Clinical Medicine, Neurology

Abstract

We assessed the efficacy and safety of once-daily eslicarbazepine acetate in comparison with twice-daily (BID) controlled-release carbamazepine (carbamazepine-CR) monotherapy in newly diagnosed focal epilepsy patients.This randomized, double-blind, noninferiority trial (NCT01162460) utilized a stepwise design with 3 dose levels. Patients who remained seizure-free for the 26-week evaluation period (level A: eslicarbazepine acetate 800 mg/carbamazepine-CR 200 mg BID) entered a 6-month maintenance period. If a seizure occurred during the evaluation period, patients were titrated to the next target level (level B: eslicarbazepine acetate 1200 mg/carbamazepine-CR 400 mg BID, level C: eslicarbazepine acetate 1600 mg/carbamazepine-CR 600 mg BID) and the evaluation period began again. The primary endpoint was the proportion of seizure-free patients for 6 months after stabilization in the per protocol set. The predefined noninferiority criteria were -12% absolute and -20% relative difference between treatment groups.Eight hundred fifteen patients were randomly assigned; 785 (388 in the eslicarbazepine acetate group and 397 in the carbamazepine-CR group) were included in the per protocol set, and 813 (401 in the eslicarbazepine acetate group and 412 in the carbamazepine-CR group) were included in the full analysis set for the primary analysis. Overall, 71.1% of eslicarbazepine acetate-treated patients and 75.6% of carbamazepine-CR-treated patients were seizure-free for ≥6 months at the last evaluated dose (average risk difference = -4.28%, 95% confidence interval [CI] = -10.30 to 1.74; relative risk difference = -5.87%, 95% CI = -13.50 to 2.44) in the per protocol set. Rates of treatment-emergent adverse events were similar between groups for patients in the safety set. Noninferiority was also demonstrated in the full analysis set, as 70.8% of patients with eslicarbazepine acetate and 74.0% with carbamazepine-CR were seizure-free at the last evaluated dose (average risk difference = -3.07, 95% CI = -9.04 to 2.89).Treatment with eslicarbazepine acetate was noninferior to BID carbamazepine-CR. With its once-daily formulation, eslicarbazepine acetate provides a useful option for first-line monotherapy for adults with newly diagnosed epilepsy and focal onset seizures.

Page Manager: Webmaster|Last update: 9/11/2012
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