The adverse event profile of perampanel: meta-analysis of randomized controlled trials
Article first published online: 22 APR 2013
© 2013 The Author(s) European Journal of Neurology © 2013 EFNS
European Journal of Neurology
Volume 20, Issue 8, pages 1204–1211, August 2013
How to Cite
Zaccara, G., Giovannelli, F., Cincotta, M., Verrotti, A. and Grillo, E. (2013), The adverse event profile of perampanel: meta-analysis of randomized controlled trials. European Journal of Neurology, 20: 1204–1211. doi: 10.1111/ene.12170
- Issue published online: 5 JUL 2013
- Article first published online: 22 APR 2013
- Manuscript Accepted: 11 MAR 2013
- Manuscript Received: 20 JAN 2013
- adverse effects;
- antiepileptic drugs;
- side effects
Background and purpose
To identify adverse events (AEs) significantly associated with perampanel treatment in double-blind clinical studies (RCTs). Serious AEs, study withdrawals due to AEs and dose–effect responses of individual AEs were also investigated.
All placebo controlled, double-blind RCTs investigating therapeutic effects of oral perampanel were searched. AEs were assessed for their association with perampanel after exclusion of synonyms, rare AEs and non-assessable AEs. Risk difference (RD) was used to evaluate the association of any AE (99% confidence intervals) and withdrawals or serious AEs (95% confidence intervals) with perampanel.
Nine RCTs (five in pharmacoresistant epilepsy and four in Parkinson's disease) were included in our study. Almost 4000 patients had been recruited, 2627 of whom were randomized to perampanel and treated with drug doses of 0.5 mg/day (n = 68), 1 mg/day (n = 65), 2 mg/day (n = 753), 4 mg/day (n = 1017), 8 mg/day (n = 431) or 12 mg/day (n = 293). Serious AEs were not significantly associated with perampanel treatment. The experimental drug was significantly associated with an increased risk of AE-related study withdrawals at 4 mg/day [RD (95% confidence interval) 0.03 (0.00, 0.06)] and 12 mg/day [RD (95% confidence interval) 0.13 (0.07, 0.18)]. Of 15 identified AEs, five (dizziness, ataxia, somnolence, irritability and weight increase) were found to be significantly associated with perampanel and one (seizure worsening) was significantly associated with placebo.
Vestibulocerebellar AEs (dizziness, ataxia), sedative effects (somnolence), irritability and weight increase were significantly associated with perampanel treatment.