Briggs, Deborah E; Lee, Caroline M; Spiegel, Katharyn; French, Jacqueline A
"Reduction of secondarily generalized tonic-clonic (SGTC) seizures with pregabalin"
Epilepsy research 2008 Nov; 82(1):86-92
- PURPOSE: To determine whether pregabalin reduces SGTC seizures in clinically refractory epilepsy. METHODS: DESIGN: Post hoc analysis performed on pooled data from three double-blind, placebo-controlled trials of similar design. Participants: Patients with partial seizures who failed > or =2 antiepileptic drugs at maximally tolerated doses. This analysis excluded those who did not have an SGTC seizure during baseline or treatment periods. OUTCOME MEASURE: Absolute and conditional reduction analyses examined change from baseline in SGTC seizure rates. The absolute reduction analysis used response ratio (RRatio) to compare reduction in seizure-frequency from baseline (B) during a 12-week treatment (T) period [RRatio=((T-B)/(T+B))x100]. The conditional analysis examined proportional risk of having SGTC seizure if a partial seizure had occurred. RESULTS: Of 1052 intent-to-treat patients, 409 were included. Sixteen were seizure-free during treatment and not included in the conditional analysis. A significant reduction in absolute SGTC seizures from baseline was observed in patients receiving pregabalin 600 mg/day (treatment RRatio, -33 versus placebo, -3.7; P=0.0005). A lower dose of pregabalin (300mg/day), administered in one study, demonstrated a trend (nonsignificant) toward reduced SGTC seizures (treatment, -24.7 versus placebo, -10.0; P=0.2493). CONCLUSION: As adjunctive therapy, pregabalin 600 mg/day is effective in reducing the absolute frequency of SGTC seizures in patients with refractory partial epilepsy, but not secondary generalization
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