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New hope for babies with severe epilepsy: fenfluramine safety trial launches

NCT ID NCT06598449

Disease control Sponsor: University of Colorado, Denver Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study is testing the safety of fenfluramine, a drug already approved for children 2 and older with Dravet syndrome, in younger children aged 12 to 23 months. Dravet syndrome is a severe genetic epilepsy that starts in the first year of life. The study will enroll 5 children and monitor them for side effects, aiming to provide early access to a potentially helpful treatment.

What this could mean

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

Active substance
fenfluramine (oral solution)
What this could lead to
If successful, this could provide a safe treatment option for young children with Dravet syndrome, potentially reducing seizures and improving quality of life.
What could go wrong
This is a very small study (only 5 participants) focused on safety, not effectiveness. Fenfluramine may cause side effects, and results may not apply to all children.

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 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 5 people

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

Started

Oct 2024

Expected to finish

Jul 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

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

Ages

12 to 24 months

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: Treating physicians must submit a clinical statement of potential benefit, which includes patient's gender, age, diagnosis, genetic pathogenic variant, co-morbidities, seizure history, prior and current therapies, response to prior therapies and reason for request. Echocardiogram (ECHO) results must also be submitted to the lead site prior to final approval. Patients must be between 12 and 23 months old to be eligible. Additional inclusion criteria: 1. SCN1A with a known or presumed pathogenic variant or VUS with a history of prolonged seizure or a clinical diagnosis of Dravet syndrome. 2. Failure of at least one anti-seizure medication that is not a sodium channel blocker (lamotrigine, oxcarbazepine, carbamazepine, eslicarbazepine) Exclusion Criteria: 1. Patients with mild or greater mitral valve regurgitation and/or trace or greater aortic valve regurgitation will not be eligible for participation. The clinical statement can be submitted first for initial, conditional approval and then ECHO results can be submitted at a later date for final approval. 2. Patients with failure to thrive will not be eligible for participation as fenfluramine can suppress appetite and has a risk for weight loss. Failure to thrive will be evaluated on the following criteria: 1. Weight less than the 2nd percentile. 2. Lack of weight gain that crosses two or more of the major percentile lines and is not congruent with length.

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Conditions

The condition(s) this trial relates to.

Dravet syndrome Epilepsies, Myoclonic

As listed by the trial registrant

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

Children under 2 years Dravet syndrome (DS)

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Children's Hospital Colorado

    RECRUITING

    Aurora, Colorado, 80045, United States

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