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Experimental gene therapy hopes to slow rare brain disease in toddlers

NCT ID NCT04998396

Disease control Sponsor: Aspa Therapeutics 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests a gene therapy called BBP-812 in children up to 30 months old with Canavan disease, a rare genetic brain disorder. The treatment uses a harmless virus to deliver a working copy of the ASPA gene, aiming to reduce harmful brain chemicals and improve motor and thinking skills. The main goals are to check safety and measure changes in brain chemistry and development over a year.

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 26 people

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

Started

Sep 2021

Expected to finish

Oct 2032

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

Up to 30 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.

Key Inclusion Criteria: * Maximum age for inclusion is 30 months. * Participant has stable health in the opinion of the investigator and as confirmed by medical history and laboratory studies with no acute or chronic hematologic, renal, liver, immunologic, or neurologic disease (other than Canavan disease). * Participant has biochemical, genetic, and clinical diagnosis of Canavan disease: * Elevated urinary NAA and * Biallelic mutation of the ASPA gene determined at Screening or documented in the participant's medical history. * Active clinical signs of Canavan disease * Participant is up to date on all immunizations per local guidelines Key Exclusion Criteria: * Tests positive for total anti-AAV9 antibodies determined by enzyme-linked immunosorbent assay (ELISA). * Received prior gene therapy or other therapy (including vaccines) involving AAV. * Participant is receiving high-dose therapy with immunosuppressants. * Participant has significantly progressed Canavan disease characterized as: * Presence of continuous/constant decerebrate or decorticate posturing, * Recurrent status epilepticus, or * Recalcitrant seizures that do not respond while on 3 or more anti-epileptic medications

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Conditions

The condition(s) this trial relates to.

Canavan disease Leukoencephalopathies Rare Diseases

As listed by the trial registrant

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

Canavan disease

How to take part

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

  1. The places running it

    3 sites. 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

  • Ann & Robert H. Lurie Children's Hospital of Chicago

    RECRUITING

    Chicago, Illinois, 60611, United States

  • Massachusetts General Hospital (MGH); Center for Rare Neurological Diseases (CRND)

    RECRUITING

    Boston, Massachusetts, 02114, United States

  • UCSF Benioff Children's Hospital Oakland

    RECRUITING

    Oakland, California, 94609, United States

  • Weill Cornell Medicine; Division of Pediatric Neurology

    COMPLETED

    New York, New York, 10065, United States

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