Cannabis-based products for pediatric epilepsy: An updated systematic review

Cannabis-based products for pediatric epilepsy: An updated systematic review

Elliott J; DeJean D; Clifford T; Coyle D; Potter B K; Skidmore B; Alexander C; Repetski A E; Shukla V; McCoy B; Wells G A

Seizure

2019

Cannabidiol; Efficacy; Living systematic review; Paediatric drug-resistant epilepsy; Safety; Seizure

PURPOSE: To provide an up-to-date summary of the benefits and harms of cannabis-based products for epilepsy in children. METHODS: We updated our earlier systematic review, by searching for studies published up to May 2019. We included randomized controlled trials (RCTs) and non-randomized studies (NRS) involving cannabis-based products administered to children with epilepsy. Outcomes were seizure freedom, seizure frequency, quality of life, sleep, status epilepticus, death, gastrointestinal adverse events, and emergency room visits. RESULTS: Thirty-five studies, including four RCTs, have assessed the benefits and harms of cannabis-based products in pediatric epilepsy (12 since April 2018). All involved cannabis-based products as adjunctive treatment, and most involved cannabidiol. In the RCTs, there was no statistically significant difference between cannabidiol and placebo for seizure freedom (relative risk 6.77, 95 % confidence interval [CI] 0.36-128.38), quality of life (mean difference [MD] 0.6, 95 %CI -2.6 to 3.9), or sleep disruption (MD -0.3, 95 %CI -0.8 to 0.2). Data from both RCTs and NRS suggest that cannabidiol reduces seizure frequency and increases treatment response; however, there is an increased risk of gastrointestinal adverse events. CONCLUSION: Newly available evidence supports earlier findings that cannabidiol probably reduces the frequency of seizures among children with drug-resistant epilepsy. PROSPERO: CRD42018084755.

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