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  • Title: Effectiveness and tolerability of adjunctive brivaracetam in patients with focal seizures: Second interim analysis of 6-month data from a prospective observational study in Europe.
    Author: Steinhoff BJ, Christensen J, Doherty CP, Majoie M, De Backer M, Hellot S, Leunikava I, Leach JP.
    Journal: Epilepsy Res; 2020 Sep; 165():106329. PubMed ID: 32623096.
    Abstract:
    Brivaracetam (BRV) is indicated for adjunctive treatment of focal (partial-onset) seizures with or without secondary generalisation in patients 4 years of age and older in the European Union (EU). An ongoing 12-month, prospective, non-interventional post-marketing study (EP0077; NCT02687711) is collecting real-world information on patients receiving treatment with adjunctive BRV in Europe. In this study, BRV is prescribed according to routine clinical practice and the EU Summary of Product Characteristics. This second interim analysis assessed effectiveness, tolerability and health-related quality of life outcomes for up to 6 months of treatment. At the cut-off date (13 April 2018), 266 patients from five countries had attended Visit 1, 24.1 % (64/266) had completed the study, 37.6 % (100/266) were ongoing, and 38.3 % (102/266) had discontinued. In total, 261 patients had at least one dose of BRV and were included in the analyses. Patients had a mean time since epilepsy diagnosis of 23.2 years, a mean of eight lifetime AEDs (sum of AEDs discontinued prior to study entry and concomitant at study entry), and a median of five focal seizures per 28 days during the 3-month retrospective Baseline. 66.3 % of patients initiated BRV at a dose within the recommended starting range (50-100 mg/day) and 87.1 % of patients received BRV modal doses within the recommended dose range (50-200 mg/day) during the study. Retention rates were 79.1 % (N = 239) at 3 months and 62.1 % (N = 211) at 6 months. The 50 % responder rates for focal seizures were 46.8 % (N = 139) at 3 months and 53.6 % (N = 97) at 6 months. The proportions of patients who were seizure-free were 10.7 % (21/196) and 7.5 % (15/199) at 3 and 6 months of treatment, respectively. Median percent reductions in focal seizure frequency per 28 days from Baseline to 3 and 6 months were 34.6 % (N = 139) and 53.3 % (N = 97), respectively. Overall, 44.2 % of patients had an improvement and 15.4 % had a worsening in Patient Weighted Quality of Life in Epilepsy Inventory-Form 31 total score from Baseline to 6 months (N = 52). At least one treatment-emergent adverse event (TEAE) was reported in 51.0 % (133/261) of patients, and 34.5 % (90/261) of patients had drug-related TEAEs. The most common drug-related TEAEs (≥5% of patients) were drug ineffective (7.7 %), seizure (6.5 %), and fatigue (6.1 %). In this 6-month interim analysis, BRV showed effectiveness when used in clinical practice in five European countries. BRV was well tolerated, and no new safety signals were observed.
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