Long-term safety and efficacy of eslicarbazepine acetate in patients with focal seizures: results of the 1-year ESLIBASE retrospective study.

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Villanueva V, Serratosa JM, Guillamon E, Garces M, Giraldez BG, Toledo M, Salas-Puig J, Lopez Gonzalez FJ, Flores J, Rodriguez-Uranga J, Castillo A, Mauri JA, Camacho JL, Lopez-Gomariz E, Giner P, Torres N, Palau J, Molins A

Long-term safety and efficacy of eslicarbazepine acetate in patients with focal seizures: results of the 1-year ESLIBASE retrospective study.

Epilepsy Res. 2014 Sep;108(7):1243-52. doi: 10.1016/j.eplepsyres.2014.04.014. Epub 2014 May 14.

PubMed ID
24908564 [ View in PubMed
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Abstract

BACKGROUND: Eslicarbazepine acetate (ESL) is a new antiepileptic drug (AED) licensed as adjunctive therapy in adults with partial-onset or focal seizures. OBJECTIVE: To evaluate in a clinical practice setting the long-term efficacy and safety of ESL in patients with focal seizures. METHODS: ESLIBASE was a retrospective study that included all patients with focal seizures who started ESL between January 2010 and July 2012 at 12 hospitals. ESL was prescribed individually according to real-life practice. Efficacy and safety were evaluated over 1 year. Switching from carbamazepine (CBZ) and oxcarbazepine (OXC) was assessed. RESULTS: Three hundred and twenty-seven patients were included; 78% of patients were taking >/=2 other AEDs at baseline. Most (87%) began ESL because of poor seizure control and 13% because of adverse events (AEs) with CBZ or OXC. After 1 year, 237 patients (72.4%) remained on ESL. At 3, 6 and 12 months, the responder rate was 46.3%, 57.9%, and 52.5%, and 21.0%, 28.0%, and 25.3% of patients were seizure free. The responder rate significantly increased when ESL was combined with a non-sodium channel-targeting drug (non-SC drug) (66.7%) versus an SC drug (47.7%; p<0.001). At 12 months, 40.7% of patients had >/=1 AE; AEs led to treatment discontinuation in 16.2%. Dizziness, nausea, and somnolence were the most common AEs. The tolerability profile improved in >50% of the patients who switched from CBZ or OXC to ESL because of AEs. CONCLUSIONS: ESL was well tolerated and effective in a real-world setting over 1 year. Side-effect profile improved when OXC and CBZ recipients were switched to ESL.

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