Phase 2 Epilepsy Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- You have been diagnosed with focal onset seizures (seizures that start in one part of the brain) or a type of generalized seizure called idiopathic generalized tonic-clonic seizures (full-body convulsive seizures with no known structural cause).
- You have had a brain scan (CT or MRI) in the past that ruled out a worsening or progressive cause for your epilepsy.
- You are currently taking between 1 and 3 approved anti-seizure medications at doses that have been stable for some time.
- You (or your caregiver) report having at least 2 countable focal onset seizures per month, or at least 1 countable generalized tonic-clonic seizure per month, in the 3 months before the screening period.
Who may not be able to join:
- You have had seizures in the past 12 months that are psychological or non-epileptic in origin, seizures that only occur in uncountable clusters, or a severe convulsive episode requiring hospitalization and a breathing tube in the past 12 months.
- You are planning to have brain surgery for epilepsy during the trial.
- You have had brain surgery for seizures within the past year, or radiation-based brain treatment within the past 2 years.
- You have schizophrenia, obsessive-compulsive disorder, or another serious mental health condition.
- You have had an active plan or intent to end your life in the past 6 months, a suicide attempt in the past 2 years, or more than one suicide attempt at any point in your life.
- You have been diagnosed with cancer or certain blood/lymph system disorders within the past 5 years.
- You have a history of heart disease, heart rhythm problems, or structural abnormalities of the heart.
- You are currently pregnant, breastfeeding, have a positive pregnancy test at screening, or plan to become pregnant during the trial or within 14 days of taking the last dose of the study drug.
- You have taken part in another clinical drug or device trial within the past 30 days (or longer, depending on the drug), or have ever received gene therapy.
- You have taken a seizure medication called vigabatrin in the last 5 years, unless your vision has been checked and found to be stable on two occasions in the year after stopping it.
- You have taken or are taking a seizure medication called felbamate, unless you meet specific requirements about how long you have been on it and how recently the dose was changed (confirm with trial site).
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Principal Investigator: Medical Director, Praxis Precision Medicines
Phone: 617-300-8460
Australian sites
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
2 site(s) in Australia. Confirm current status and contact details directly with the trial site.
Primary endpoints
To evaluate the efficacy of PRAX-628 on seizure frequency in adults with FOS or PGTCS currently taking ASMs
Can't join this trial?
Data last synced from ClinicalTrials.gov: 28 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.