Overview
An Open Label Clinical Trial to Evaluate the Efficacy and Safety of PRAX-628 in Adult Patients With Focal Onset or Primary Generalized Tonic-Clonic Seizures
Description
An open label clinical trial to evaluate the efficacy and safety of PRAX-628 in adult patients with focal onset or primary generalized tonic-clonic seizures who can attest to concurrently taking at least 1, but no more than 3 acceptable anti-seizure medications.
Eligibility
Inclusion Criteria:
- A diagnosis of focal onset seizures or idiopathic generalized tonic clonic seizures.
- Evidence by computed tomography (CT) or magnetic resonance imaging (MRI) in the past that has ruled out a progressive cause of epilepsy.
- Participant must have been receiving stable doses of allowable ASMs (a minimum of 1 and a maximum of 3 ASMs).
- Participant and/or caregiver (if applicable) self-reports at least 2 countable focal onset seizures per month for focal onset patients, or 1 countable generalized tonic-clonic seizure per month in the 3 months immediately prior to the Screening/Observation Period for PGTCS patients.
Exclusion Criteria:
- History of pseudo or psychogenic seizures, or cluster seizures only, within the 12-month period preceding study entry where the individual seizures cannot be counted, or an episode of convulsive status epilepticus requiring hospitalization and intubation in the 12 months prior to Screening.
- Planned epilepsy surgery during the course of the clinical trial.
- History of neurosurgery for seizures <1 year prior to enrollment, or radiosurgery <2 years prior to enrollment.
- Schizophrenia and obsessive-compulsive disorder, or other serious mental health disorders.
- Active suicidal plan/intent in the past 6 months, or a history of suicide attempt in the last 2 years, or more than 1 lifetime suicide attempt.
- Participants with a history of malignancy, myeloproliferative or lymphoproliferative disorders within the past 5 years are excluded.
- History of cardiac disease(s)/cardiac conduction disorders/or cardiac structural abnormality(ies).
- Is pregnant or breastfeeding at the time of Screening, or has a positive serum pregnancy test at Screening or is planning to become pregnant during the clinical trial or within 14 days of the last study drug dose.
- Has received any other experimental or investigational drug, device or other therapy within 30 days or 5 half-lives (whichever is longer) prior to Screening, or any prior use of gene therapy.
- Vigabatrin: Use in the last 5 years without stable visual fields tested twice over the 12 months after the last dose of vigabatrin.
- Felbamate: If used as a concomitant ASM, patients must be on felbamate for at least 2 years, with a stable dose for 2 months prior to Screening. If a patient received felbamate in the past, it must have been discontinued 2 months prior to Screening.