Phase 3 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:
- People who have been diagnosed with focal onset epilepsy (a type of epilepsy where seizures start in one specific area of the brain), according to a recognised international classification system.
- People who have had a brain scan (CT or MRI) in the past that ruled out a progressive or worsening underlying cause of their epilepsy, in the opinion of the investigating doctor.
- People who have been taking a stable dose of 1 to 3 approved anti-seizure medicines for at least 4 weeks before the screening stage of the trial begins.
- People who have had at least 4 countable focal onset seizures in the 4 weeks before joining the trial, with no more than 21 consecutive seizure-free days during that period.
- People who have kept a seizure diary on at least 80% of days during the observation period before joining the trial.
Who may not be able to join:
- People who, in the 12 months before joining, have had non-epileptic (psychogenic) seizures, seizures that occur in clusters too close together to count individually, a severe prolonged seizure requiring hospitalisation and breathing support (intubation), or seizures caused by illicit drug or alcohol use.
- People whose seizures are caused by an ongoing condition such as an active infection, a tumour, a disease affecting the nervous system's protective covering, a progressive degenerative disease, a worsening metabolic illness, a growing structural brain lesion, or a brain disorder affecting overall function.
- People whose previous brain wave test (EEG) showed a pattern that is not consistent with seizures starting from a single focal area of the brain.
- People who are planning to have epilepsy surgery during the trial period.
- People who have had brain surgery for seizures within the past year, a type of radiation treatment for the brain within the past 2 years, a nerve stimulation device implanted within the past year, or a nerve stimulation device implanted more than a year ago whose settings have not been stable for at least 2 months before the screening stage.
- People who have had active thoughts of suicide or a plan to end their life in the past 6 months, a suicide attempt in the past 2 years, or more than one suicide attempt at any point in their life, as assessed using a standardised questionnaire.
- People who have any significant ongoing illness, disorder, abnormal laboratory results, alcohol or drug dependence, or a recent or ongoing psychiatric, medical, or surgical condition.
- People who have had a cancer, blood cell disorder, or lymph system disorder within the past 3 years.
- People who have a history of or currently have uncontrolled heart conditions, including problems with heart rhythm or heart structure.
- People whose blood test results show certain liver-related values above acceptable levels (specifically, total bilirubin more than 1.5 times the upper limit of normal, or liver enzyme levels ALT or AST more than 3 times the upper limit of normal).
- People who have or have had an HIV infection, or who test positive for HIV antibodies at screening, or who show signs of active hepatitis B or hepatitis C infection based on screening tests.
- People who have taken part in another clinical trial or used an experimental drug, device, or treatment within 30 days or 5 half-lives (whichever is longer) before screening, or who have ever had gene or cell therapy.
- People who have taken the anti-seizure medicine vigabatrin in the past 5 years, unless their visual fields have been tested and shown to be stable on two occasions in the 12 months following their last dose.
- People currently taking felbamate (another anti-seizure medicine) who have not been on it for at least 2 years with a stable dose for at least 2 months before screening; or people who previously took felbamate but stopped less than 2 months before screening.
- People who have had a serious allergic reaction to an anti-seizure medicine, including severe skin reactions (such as Stevens-Johnson syndrome), blood-related reactions, or reactions affecting internal organs.
- People who are pregnant, breastfeeding, have a positive pregnancy test at screening, or are planning to become pregnant during the trial or before the end-of-study visit.
- People who have previously been exposed to the study drug vormatrigine, or who are known to be allergic to any ingredient in the vormatrigine formulation.
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: Praxis Precision Medicines, Praxis Precision Medicines
Phone: 773-939-6858
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
Primary endpoints
To evaluate the efficacy of vormatrigine compared to placebo on focal seizure frequency in adults currently taking 1 to 3 ASMs
Can't join this trial?
Data last synced from ClinicalTrials.gov: 22 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.