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Can a new drug tame severe childhood epilepsy?

NCT ID NCT05737784

Disease control Sponsor: Praxis Precision Medicines Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 03, 2026 · Last updated Aug 04, 2026 · Updated 1 time

Summary

This trial is testing an experimental drug called PRAX-222 in children aged 2 to 18 who have a rare, severe form of epilepsy caused by changes in the SCN2A gene. The goal is to see if the drug is safe and can reduce how often seizures happen. Participants will receive either PRAX-222 or a placebo, and their seizure frequency will be tracked over time.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
PRAX-222
What this could lead to
If successful, this could lead to a targeted treatment that reduces seizures in children with a rare, severe form of epilepsy caused by SCN2A gene changes.
What could go wrong
This is an early-stage trial, so the drug may not work as hoped or may cause side effects. The results may not apply to all children with SCN2A-related epilepsy.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

About 60 people

The number the study aims to enrol. It can still change while the study runs.

Started

Apr 2023

Expected to finish

Feb 2028

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

2 to 18 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Has onset of seizures prior to 3 months of age. * Has a minimum weight of at least 10 kg at screening. * Has a documented SCN2A variant through genetic testing obtained via a laboratory accredited per Clinical Laboratory Improvement Amendments (CLIA) or College of American Pathologists (CAP) or equivalent. * Additional inclusion criteria apply and will be assessed by the study team Exclusion Criteria: * Has any clinically significant or known pathogenic genetic variant other than in the SCN2A gene, or a genetic variant that may explain or contribute to the participant's epilepsy and/or developmental disorder. * Is taking more than 2 sodium channel blocking anti-seizure medications * Additional exclusion criteria apply and will be assessed by the study team

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Conditions

The condition(s) this trial relates to.

developmental and epileptic encephalopathy, 11 epilepsy

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Epilepsy SCN2A-dee

Contacts and locations

Locations

  • Hospital de Clinicas de Porto Alegre

    Porto Alegre, Rio Grande do Sul, 90035-003, Brazil

  • Le Bonheur Childrens Hospital

    Memphis, Tennessee, 38103, United States

  • Praxis Research Site

    São Paulo, 05403-010, Brazil

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