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Recruiting NCT05085704

Brain Metabolism Observed at 3 Tesla or 7 Tesla in Health and Metabolic Disease

— Observational Glut1 Deficiency Syndrome 1 Glucose Metabolism Disorders Epilepsy Glut1 Deficiency Syndrome 1, Autosomal Recessive

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: Magnetic resonance imaging.
Who it may be relevant to
Registry conditions: Glut1 Deficiency Syndrome 1, Glucose Metabolism Disorders, Epilepsy, Glut1 Deficiency Syndrome 1, Autosomal Recessive. Basic parameters: 16 years — 80 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
United States
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

Unsure about the terms? Read our patient guide →

Overview

The goal is to develop methodology to monitor flux in the citric acid cycle in brain via 13C nuclear magnetic resonance (NMR) spectroscopy at 7 Tesla or 3 Tesla.

Detailed description

The goal is to establish a protocol to 13C-label (from 13C-glucose) several physiological molecules: glucose, lactate, pyruvate and derived compounds. All of these molecules can undergo oxidation in the citric acid cycle. The intent is to study the 13C labeling pattern of these molecules in control and G1D subjects to determine if downstream products (such as 13C bicarbonate or 13C glutamate) due to oxidation in the mitochondria can be detected in brain or in blood by NMR analysis. While inside the instrument, the subjects may also undergo a 7T MR or 3T MR exam to correlate spectroscopy with brain structure.

Interventions

  • Device Magnetic resonance imaging
    Medical imaging technique used in radiology to form pictures of the anatomy.

Primary outcome measures

  • Select metabolite abundance measured at 7Tfield strength [Time frame: Day 1, immediately after 13 C labeled isotope infusion]
  • Select metabolite abundance measured at 3T field strength [Time frame: Day 1, immediately after 13 C labeled isotope infusion]

Eligibility criteria

Inclusion criteria

  • 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).
  • Ages 16 to 80
  • Persons with dental fillings, dental crowns, and short (max.4 cm) dental retainer wires can be included.

Exclusion criteria

  • People or patients with uncontrolled seizure disorder, defined as grand mal (not absence) seizure in the preceding 3 months.
  • 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.
  • 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.
  • Persons with ICD, pacemakers, neurostimulators and other such devices will be excluded.
  • Persons with claustrophobia are excluded.
  • Persons with questionable ferrous implants, bullets, BB's, and shrapnel will be excluded.
  • 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.
  • People following a ketogenic diet

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: Yes

Study design

Observational model
Cohort

Study locations

United States · 2 centers
  • Weill Cornell Medicine — New York
  • UT Southwestern Medical Center — Dallas

Identifiers

NCT: NCT05085704 · 24-08027788 · RM1NS133593

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗