Long-term response to zonisamide in patients with West syndrome
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Updated: Oct 1, 2026

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy
Published on: September 20, 2024
1Division of Pediatric Neurology, Osaka Medical Center and Research Institute for Maternal and Child Health, Murodo-cho, Izumi, Japan. yasuzuki@mch.pref.osaka.jp
Abstract:
The long-term effectiveness of zonisamide (ZNS) was evaluated in 11 patients with West syndrome (7 symptomatic) who had cessation of spasms with ZNS monotherapy. During the follow-up period (24 to 79 months, mean = 53 months), this response was maintained in 7 patients (3 symptomatic, relapse rate = 36%), including 2 children in whom ZNS was successfully discontinued. No serious adverse reactions were noted. ZNS may be both effective and well tolerated for the treatment of West syndrome.
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