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Scientists peek inside Brain's fuel gauge in rare sugar disorder

NCT ID NCT05085704

Knowledge-focused Sponsor: Weill Medical College of Cornell University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 aims to develop a better way to measure how the brain uses sugar (glucose) for energy. Researchers will use advanced MRI-like scans at 3 or 7 Tesla strength in 20 healthy volunteers and people with Glut1 deficiency, a rare condition that affects brain fuel. Participants receive a safe, labeled sugar infusion during scanning. No treatment is tested; the goal is to improve understanding of brain metabolism.

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.

Participants

About 20 people

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

Started

May 2022

Expected to finish

Aug 2029

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.

Who is studied

Adolescents and adults with Glut1 Deficiency; Normal, healthy adolescents and adults.

Ages

16 to 80 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: 1. Subjects will be adolescents or adults, age 16-80 years in good general health (evidenced by normal vital signs and no acute signs or symptoms of illness) or with previously (not for this study) documented G1D (genetically confirmed). 2. Ages 16 to 80 3. Persons with dental fillings, dental crowns, and short (max.4 cm) dental retainer wires can be included. Exclusion Criteria: 1. People or patients with uncontrolled seizure disorder, defined as grand mal (not absence) seizure in the preceding 3 months. 2. Pregnant females will be excluded. A serum or urine pregnancy test will be administered to all females of child bearing potential within 24 hours of administration of the tracer and MRI scan. The pregnancy test will be communicated in person by the study PI. Positive results in subjects 17 years old or younger will be disclosed to parent/guardian only. 3. Subjects with typical implanted orthopedic metal in bone may be considered for inclusion in a 7T scan providing the implant is not within the volume of the radio frequency coil. The PI and the AIRC Medical Director will discuss each case and determine eligibility. 4. Persons with ICD, pacemakers, neurostimulators and other such devices will be excluded. 5. Persons with claustrophobia are excluded. 6. Persons with questionable ferrous implants, bullets, BB's, and shrapnel will be excluded. 7. Subjects who are not fluent in English will be excluded because immediate cooperation and the ability to respond to instructions from the investigators are necessary. 8. People following a ketogenic diet

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Conditions

The condition(s) this trial relates to.

encephalopathy due to GLUT1 deficiency epilepsy glucose metabolism disease glucose transport disorder GLUT1 deficiency syndrome Glycogen Storage Disease Id

As listed by the trial registrant

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

Epilepsy Glucose metabolism disorders Glucose transport defect Glucose transporter protein type 1 deficiency syndrome Glucose transporter type 1 deficiency syndrome GLUT1 deficiency syndrome 1 GLUT1 deficiency syndrome 1, autosomal recessive

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

  • UT Southwestern Medical Center

    TERMINATED

    Dallas, Texas, 75390, United States

  • Weill Cornell Medicine

    RECRUITING

    New York, New York, 10065, United States

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