RecruitingPhase 2Drug trialA Long-term Study of the Safety and Effectiveness of RAP-219 in Adults With Focal Onset SeizuresThis is a clinical research study for an investigational drug called RAP-219 in patients with Refractory Focal Epilepsy. This study is being conducted to determine RAP-219 Long- term safety and open-label antiseizure activity in patients with Refractory Focal Epilepsy.