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Randomized trial of lacosamide versus fosphenytoin for nonconvulsive seizures.

ABSTRACT: OBJECTIVE:The optimal treatment of nonconvulsive seizures in critically ill patients is uncertain. We evaluated the comparative effectiveness of the antiseizure drugs lacosamide (LCM) and fosphenytoin (fPHT) in this population. METHODS:The TRENdS (Treatment of Recurrent Electrographic Nonconvulsive Seizures) study was a noninferiority, prospective, multicenter, randomized treatment trial of patients diagnosed with nonconvulsive seizures (NCSs) by continuous electroencephalography (cEEG). Treatment was randomized to intravenous (IV) LCM 400mg or IV fPHT 20mg phenytoin equivalents/kg. The primary endpoint was absence of electrographic seizures for 24 hours as determined by 1 blinded EEG reviewer. The frequency with which NCS control was achieved in each arm was compared, and the 90% confidence interval (CI) was determined. Noninferiority of LCM to fPHT was to be concluded if the lower bound of the CI for relative risk was >0.8. RESULTS:Seventy-four subjects were enrolled (37 LCM, 37 fPHT) between August 21, 2012 and December 20, 2013. The mean age was 63.6 years; 38 were women. Seizures were controlled in 19 of 30 (63.3%) subjects in the LCM arm and 16 of 32 (50%) subjects in the fPHT arm. LCM was noninferior to fPHT (p?=?0.02), with a risk ratio of 1.27 (90% CI?=?0.88-1.83). Treatment emergent adverse events (TEAEs) were similar in both arms, occurring in 9 of 35 (25.7%) LCM and 9 of 37 (24.3%) fPHT subjects (p?=?1.0). INTERPRETATION:LCM was noninferior to fPHT in controlling NCS, and TEAEs were comparable. LCM can be considered an alternative to fPHT in the treatment of NCSs detected on cEEG. Ann Neurol 2018;83:1174-1185.

SUBMITTER: Husain AM

PROVIDER: S-EPMC6785201 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Randomized trial of lacosamide versus fosphenytoin for nonconvulsive seizures.

Husain Aatif M AM Lee Jong W JW Kolls Bradley J BJ Hirsch Lawrence J LJ Halford Jonathan J JJ Gupta Puneet K PK Minazad Yafa Y Jones Jennifer M JM LaRoche Suzette M SM Herman Susan T ST Swisher Christa B CB Sinha Saurabh R SR Palade Adriana A Dombrowski Keith E KE Gallentine William B WB Hahn Cecil D CD Gerard Elizabeth E EE Bhapkar Manjushri M Lokhnygina Yuliya Y Westover M Brandon MB

Annals of neurology 20180601 6

<h4>Objective</h4>The optimal treatment of nonconvulsive seizures in critically ill patients is uncertain. We evaluated the comparative effectiveness of the antiseizure drugs lacosamide (LCM) and fosphenytoin (fPHT) in this population.<h4>Methods</h4>The TRENdS (Treatment of Recurrent Electrographic Nonconvulsive Seizures) study was a noninferiority, prospective, multicenter, randomized treatment trial of patients diagnosed with nonconvulsive seizures (NCSs) by continuous electroencephalography ...[more]

PMID: 29733464

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Project description:Background. The relative efficacy and safety of lacosamide as adjunctive therapy compared to other antiepileptic drugs has not been well established. Objective. To determine if lacosamide provides improved efficacy and safety, reduced length of hospital stay and improved quality of life compared with other anti-epileptic therapies for adults with partial-onset seizures. Data Sources. A systematic review of the medical literature using Medline (1946-Week 4, 2012), EMBASE (1980-Week 3, 2012), Cochrane Central Register of Controlled Trials (Issue 1 of 12, January 2012). Additional studies were identified (through to February 7, 2012) by searching bibliographies, the FDA drug approval files, clinical trial registries and major national and international neurology meeting abstracts. No restrictions on publication status or language were applied. Study Selection. Randomized controlled trials of lacosamide in adults with partial-onset seizures were included. Data Extraction. Study selection, extraction and risk of bias assessment were performed independently by two authors. Authors of studies were contacted for missing data. Data Synthesis. All pooled analyses used the random effects model. Results. Three trials (1311 patients) met inclusion criteria. Lacosamide increased the 50% responder rate compared to placebo (RR 1.68 [95% CI 1.36 to 2.08]; I(2) = 0%). Discontinuation due to adverse events was statistically significantly higher in the lacosamide arm (RR3.13 [95% CI 1.94 to 5.06]; I(2) = 0%). Individual adverse events (ataxia, dizziness, fatigue, and nausea) were also significantly higher in the lacosamide group. Limitations. All dosage arms from the included studies were pooled to make a single pair-wise comparison to placebo. Selective reporting of outcomes was found in all of the included RCTs. Conclusions. Lacosamide as adjunctive therapy in patients with partial-onset seizures increases the 50% responder rate but with significantly more adverse events compared to the placebo.

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Randomized trial of lacosamide versus fosphenytoin for nonconvulsive seizures.

Publications

Randomized trial of lacosamide versus fosphenytoin for nonconvulsive seizures.

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