Intermediate-Size Expanded Access Protocol (EAP) for LP352

This is an intermediate-size expanded access program (EAP) study. The purpose of this EAP is to provide continued access to LP352, an investigational drug product being investigated in participants with DEEs. The EAP study will allow continued treatment with LP352 for eligible participants diagnosed with treatment resistant DEEs who successfully completed an LP352 Clinical Trial (Enrollment by Invitation) or an immediate family member who has the exact same gene mutation resulting in the same DEE epilepsy syndrome phenotype or a patient who previously participated in the lorcaserin EAP.