Abstract:
BACKGROUND:Epilepsy is a common neurologic disorder, affecting approximately 50 million people worldwide; nearly a third of these people have epilepsy that is not well controlled by a single antiepileptic drug (AED) and they usually require treatment with a combination of two or more AEDs. In recent years, many newer AEDs have been investigated as add-on therapy for focal epilepsy; losigamone is one of these drugs and is the focus of this systematic review. This is an update of a Cochrane Review first published in 2012 and updated in 2018. OBJECTIVES:To investigate the efficacy and tolerability of losigamone when used as an add-on therapy for focal epilepsy. SEARCH METHODS:For the latest update on 20 August 2019, we searched the Cochrane Register of Studies (CRS Web) and MEDLINE. CRS Web includes randomized or quasi-randomized, controlled studies from the Specialized Registers of Cochrane Review Groups including Cochrane Epilepsy, CENTRAL, PubMed, Embase, ClinicalTrials.gov, and the World Health Organization International Clinical Trials Registry Platform (ICTRP). Previously we searched trials registers and contacted the manufacturer of losigamone and authors of included studies for additional information. We did not impose any language restrictions. SELECTION CRITERIA:Randomized controlled, add-on studies comparing losigamone with placebo for focal epilepsy. DATA COLLECTION AND ANALYSIS:Two review authors independently assessed study quality and extracted data. The primary outcomes were 50% or greater reduction in seizure frequency and seizure freedom; the secondary outcomes were treatment withdrawal and adverse events. Results are presented as risk ratios (RRs) with 95% confidence intervals (CIs) or 99% CIs (for the individual listed adverse events to make an allowance for multiple testing). MAIN RESULTS:Two studies involving a total of 467 participants, aged over 18 years, were eligible for inclusion. Both studies assessed losigamone 1200 mg/day or 1500 mg/day as an add-on therapy for focal epilepsy. We assessed one study as being of good methodological quality while the other was of uncertain quality. For the efficacy outcomes, results showed that participants taking losigamone were significantly more likely to achieve a 50% or greater reduction in seizure frequency (RR 1.76, 95% CI 1.14 to 2.72; 2 studies, 467 participants; moderate-quality evidence), but associated with a significant increase of treatment withdrawal when compared with those taking placebo (RR 2.16, 95% CI 1.28 to 3.67; 2 studies, 467 participants; moderate-quality evidence). For the tolerability outcomes, results indicated that the proportion of participants who experienced adverse events in the losigamone group was higher than in the placebo group (RR 1.34, 95% CI 1.00 to 1.80; 2 studies, 467 participants; moderate-quality evidence). Dizziness was the only adverse event significantly reported in relation to losigamone (RR 3.82, 99% CI 1.69 to 8.64; 2 studies; 467 participants; moderate-quality evidence). Neither study reported the proportion of participants achieving seizure freedom. A subgroup analysis according to different doses of losigamone showed that a higher dose of losigamone (1500 mg/day) was associated with a greater reduction in seizure frequency than lower doses, but was also associated with more dropouts due to adverse events. AUTHORS' CONCLUSIONS:The results of this review showed that losigamone did reduce seizure frequency but was associated with more treatment withdrawals when used as an add-on therapy for people with focal epilepsy. However, the included studies were of short-term duration and uncertain quality. Future well-designed randomized, double-blind, placebo-controlled studies with a longer-term duration are needed. We did not find any new studies since the last version of this review. We judged the overall quality of the evidence for the outcomes assessed as moderate.
journal_name
Cochrane Database Syst Revjournal_title
The Cochrane database of systematic reviewsauthors
Chen H,He H,Xiao Y,Luo M,Luo H,Wang Jdoi
10.1002/14651858.CD009324.pub5subject
Has Abstractpub_date
2019-12-11 00:00:00pages
CD009324issn
1469-493Xjournal_volume
12pub_type
杂志文章,meta分析abstract:BACKGROUND:Recurrent respiratory papillomatosis is a condition characterised by benign papillomatous (wart-like) growths in the upper airway. It can affect both adults and children causing airway-obstruction and voice change. Treatment usually involves repeated surgical debulking of the papillomata, and several agents ...
journal_title:The Cochrane database of systematic reviews
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doi:10.1002/14651858.CD005053.pub2
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doi:10.1002/14651858.CD006781.pub2
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doi:10.1002/14651858.CD001007.pub2
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doi:10.1002/14651858.CD002308
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pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD009957.pub2
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