Long-term efficacy of add-on stiripentol treatment in children, adolescents, and young adults with refractory epilepsies: A single center prospective observational study.

This study confirms the long-term efficacy of add-on STP treatment in patients with different types of refractory epilepsies, including focal onset epilepsy without bilateral tonic-clonic seizures. Further confirmations based on prospectively designed studies are required to confirm STP efficacy in focal epilepsy.