VIGABATRIN IN CHILDHOOD EPILEPSY - COMPARABLE EFFICACY FOR GENERALIZED AND PARTIAL SEIZURES

Thirty-one patients, aged 12.6 +/- 5.6 years, with refractory seizures for 8 +/- 4.3 years, were treated with adjunctive vigabatrin. Twenty- four percent had a >50% reduction in seizure frequency (95% one-sided confidence interval). Generalized myoclonic, atonic, and tonic clonic and partial, with and without secondary generalization, seizures were ail reduced at a mean dose of 70 +/- 38 mg/kg/day. Comparison of vigab atrin therapy duration, for partial and generalized seizure groups, ut ilizing Kaplan-Meier methodology showed similar survival times. Vigaba trin therapy was ineffective in the four children with tuberous sclero sis. Transient somnolence, ataxia and dizziness were the most frequent side effects. A severe aggressive agitation occurred in three patient s, and necessitated discontinuation of vigabatrin in one patient. Viga batrin was as effective in generalized as in partial seizures in this study. Clinical utility may be limited by unacceptable behavioral side effects in some patients.