Clinical Research Directory

Inclusion Criteria: * Participant must have a predicted loss of function pathogenic or likely pathogenic SCN1A variant. * Participant must have experienced their first seizure between the ages of 3 and 15 months. * Participant must have a clinical diagnosis of Dravet syndrome or the treating clinician must have a high clinical suspicion of a diagnosis of Dravet syndrome. * Participant is receiving at least one prophylactic antiseizure medication. Exclusion Criteria: * Participant has another genetic mutation or clinical comorbidity which could potentially confound the typical Dravet phenotype. * Participant has a known central nervous system structural and/or vascular abnormality (indicated by an MRI or CT scan of the brain). * Participant has an abnormality that may interfere with CSF distribution and/or has an existing ventriculoperitoneal shunt. * Participant is currently taking or has taken antiseizure medications (ASMs) at a therapeutic dose that are contraindicated in Dravet syndrome, including sodium channel blockers. * Participant has experienced seizure freedom for a period of 4 consecutive weeks within the 6-month period prior to informed consent. * Participant has previously received gene or cell therapy. * Participant is currently enrolled in a clinical trial or receiving an investigational therapy. * Participant has clinically significant underlying liver disease.