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      • Record: found
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      Efficacy and tolerability of perampanel in patients with genetic generalized epilepsy (GGE): A retrospective, single-center study from the United Arab Emirates (UAE)

      case-report
      Author(s): , * ,
      Publication date (Electronic):
      Journal: Epilepsy & Behavior Reports
      Publisher: Elsevier

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          Highlights

          • •

            52.4% achieved seizure freedom at six months from baseline in our cohort of PWE from the UAE.

          • •

            38.1% achieved ≥50% reduction in seizure frequency at six months from baseline.

          • •

            90.5% remained on perampanel treatment beyond the six-month period.

          • •

            33.3% maintained perampanel monotherapy beyond six months.

          • •

            9.5% discontinued perampanel treatment due to treatment-induced adverse events.

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          Adjunctive perampanel for refractory partial-onset seizures: randomized phase III study 304.

          H. Yang, David Squillacote, Dinesh Kataria … (2012)
          To assess efficacy and safety of once-daily 8 or 12 mg perampanel, a noncompetitive α-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid (AMPA) receptor antagonist, when added to concomitant antiepileptic drugs (AEDs) in the treatment of drug-resistant partial-onset seizures. This was a multicenter, double-blind, placebo-controlled trial (ClinicalTrials.gov identifier: NCT00699972). Patients (≥12 years, with ongoing seizures despite 1-3 AEDs) were randomized (1:1:1) to once-daily perampanel 8 mg, 12 mg, or placebo. Following baseline (6 weeks), patients entered a 19-week double-blind phase: 6-week titration (2 mg/week increments to target dose) followed by a 13-week maintenance period. Percent change in seizure frequency was the primary endpoint; 50% responder rate was the primary endpoint for EU registration. Of 388 patients randomized and treated, 387 provided seizure frequency data. Using this intent-to-treat population over the double-blind phase, the median percent change in seizure frequency was -21.0%, -26.3%, and -34.5% for placebo and perampanel 8 and 12 mg, respectively (p = 0.0261 and p = 0.0158 for 8 and 12 mg vs placebo, respectively). Fifty percent responder rates during the maintenance period were 26.4%, 37.6%, and 36.1%, respectively, for placebo, perampanel 8 mg, and perampanel 12 mg; these differences were not statistically significant for 8 mg (p = 0.0760) or 12 mg (p = 0.0914). Sixty-eight (17.5%) patients discontinued, including 40 (10.3%) for adverse events. Most frequent treatment-emergent adverse events were dizziness, somnolence, irritability, headache, fall, and ataxia. This trial demonstrated that once-daily, adjunctive perampanel at doses of 8 or 12 mg improved seizure control in patients with uncontrolled partial-onset seizures. Doses of perampanel 8 and 12 mg were safe, and tolerability was acceptable. This study provides Class I evidence that once-daily 8 and 12 mg doses of adjunctive perampanel are effective in patients with uncontrolled partial-onset seizures.
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            Randomized phase III study 306: adjunctive perampanel for refractory partial-onset seizures.

            V Villanueva, H. Yang, David Squillacote … (2012)
            To evaluate the efficacy and safety of perampanel 2, 4, and 8 mg/day added to 1-3 concomitant antiepileptic drugs (AEDs) in patients with uncontrolled partial-onset seizures. During this double-blind, placebo-controlled trial, patients with persisting seizures on 1-3 AEDs were randomized to perampanel 2, 4, and 8 mg/day or placebo following a 6-week baseline phase. Perampanel was titrated weekly by 2 mg/day and maintained at the dose achieved for 13 weeks. Primary endpoints were median percent change in seizure frequency and 50% responder rate. Analysis of covariance was performed on all treated patients with any seizure data (recorded in daily diaries) in the double-blind phase. A total of 706 patients were randomized and received trial medication; 623 completed the trial. Median percent change in seizure frequency-the primary efficacy endpoint-was -10.7%, -13.6%, -23.3%, and -30.8% for placebo, perampanel 2, 4, and 8 mg/day, respectively. The difference from placebo was statistically significant for perampanel 4 mg/day (p = 0.0026) and 8 mg/day (p < 0.0001). The corresponding 50% responder rates were 17.9%, 20.6%, 28.5%, and 34.9%. The difference from placebo was statistically significant for perampanel 4 mg/day (p = 0.0132) and 8 mg/day (p = 0.0003). An apparent dose response was suggested for dizziness, which was the most frequent treatment-emergent adverse event. This trial demonstrated that adjunctive perampanel effectively reduced seizure frequency and possessed a favorable tolerability profile in patients ≥12 years with partial-onset seizures (with or without secondary generalization), with a minimum effective dose of 4 mg/day. This study provides Class I evidence that 4 and 8 mg/day doses of adjunctive perampanel are effective and tolerated in reducing partial-onset seizures.
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              Evaluation of adjunctive perampanel in patients with refractory partial-onset seizures: results of randomized global phase III study 305.

              H. Yang, David Squillacote, Dinesh Kataria … (2012)
              To assess the efficacy and safety of once-daily doses of perampanel 8 and 12 mg when added to 1-3 concomitantly administered, approved antiepileptic drugs (AEDs) in patients with uncontrolled partial-onset seizures. Study 305 was a multicenter, double-blind, placebo-controlled trial in patients aged 12 years and older with ongoing seizures despite prior therapy with at least two AEDs, and currently receiving 1-3 AEDs. Equal randomization to once-daily oral perampanel 8 or 12 mg, or placebo was performed. Patients entered a 19-week double-blind treatment phase comprising a 6-week titration period, with weekly 2-mg dose increments, followed by a 13-week maintenance period. Primary efficacy end points were the responder rate (proportion of patients who had a ≥50% reduction in seizure frequency during treatment per 28 days relative to baseline), and the percent change in seizure frequency per 28 days relative to pre-perampanel baseline. A secondary end point was percent change in the frequency of complex partial plus secondarily generalized seizures. Adverse events (AEs) were monitored throughout the study. Three hundred eighty-six patients were randomized and treated with study medication. Of these, 321 patients completed the study. The 50% responder rates (intent-to-treat analysis) were 14.7%, 33.3%, and 33.9%, respectively, for placebo, perampanel 8 mg, and perampanel 12 mg, with significant improvements over placebo for both perampanel 8 mg (p = 0.002) and 12 mg (p < 0.001). The median percent change from baseline in seizure frequency per 28 days (intent-to-treat analysis) was -9.7%, -30.5%, and -17.6% for placebo, 8 mg, and 12 mg, respectively, with significant reductions compared with placebo for both 8 mg (p < 0.001) and 12 mg (p = 0.011). For complex partial seizures plus partial seizures that secondarily generalized, the median percent change in frequency was -32.7% (8 mg), -21.9 (12 mg), and -8.1% (placebo), with significant reductions for both 8 mg (p < 0.001) and 12 mg (p = 0.005). The most frequent (occurring in ≥10% of patients in any treatment group) treatment-emergent AEs were dizziness, somnolence, fatigue, and headache, with an apparent dose effect suggested for all except headache. This phase III trial demonstrated that adjunctive treatment with once-daily perampanel at 8 mg and 12 mg was effective in improving seizure control in patients 12 years and older with refractory partial-onset seizures. These study results also demonstrated that once-daily doses of 8 mg and 12 mg were safe and acceptably tolerated in this study. Perampanel demonstrated a favorable risk/benefit ratio in this population. Wiley Periodicals, Inc. © 2012 International League Against Epilepsy.
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                Author and article information

                Contributors
                Seada A. Kassie
                Journal
                Journal ID (nlm-ta): Epilepsy Behav Rep
                Journal ID (iso-abbrev): Epilepsy Behav Rep
                Title: Epilepsy & Behavior Reports
                Publisher: Elsevier
                ISSN (Electronic): 2589-9864
                Publication date PMC-release: 22 July 2019
                Publication date Collection: 2019
                Publication date (Electronic): 22 July 2019
                Volume: 12
                Electronic Location Identifier: 100330
                Affiliations
                Department of Neurology, American Center for Psychiatry & Neurology, United Arab Emirates
                Author notes
                [* ]Corresponding author at: P.O. Box – 108699, Abu Dhabi, United Arab Emirates. research.officer@ 123456americancenteruae.com
                Article
                Publisher ID: S2589-9864(19)30064-4 Publisher ID: 100330
                DOI: 10.1016/j.ebr.2019.100330
                PMC ID: 6737327
                PubMed ID: 31517268
                SO-VID: 03c8b747-af62-4440-958e-4ef41a6b9da2
                Copyright © © 2019 The Authors
                License:

                This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

                History
                Date received : 6 February 2019
                Date revision received : 8 June 2019
                Date accepted : 26 June 2019
                Categories
                Subject: Article

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