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MinorEligibility criteria expanded, about 19 words
MinorRe-verified, no change to tracked fieldsv33
MinorStart date changed from estimate of Aug 23, 2026 to Aug 14, 2026v32
MinorStart date: Aug 20, 2026 to Aug 23, 2026v31
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MinorStart date: Jul 14, 2026 to Jul 15, 2026v4
MinorStart date: Jul 13, 2026 to Jul 14, 2026v3
MinorStart date: Jul 12, 2026 to Jul 13, 2026v2
MinorStudy First Submitted
Stopped: an ongoing trial was terminated, suspended or withdrawn.
Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
Minor: routine progress and housekeeping, such as sites added or enrollment closed.
Background:
Researchers have developed a new radioactive tracer (11C-ARMI). A tracer is a drug that attaches itself to other chemicals in the body and lights up so that the chemicals can be seen in imaging scans. The new tracer may be able to help them with many diseases, such as Alzheimer s disease and Parkinson s disease. Researchers want to test the new tracer in healthy people.
Objective:
To test a new tracer (11C-ARMI) during imaging scans of the brain and body in healthy people.
Eligibility:
Healthy people aged 18 years and older. They must have been screened under protocols 01-M-0254 or 17M0181.
Design:
All participants will have a positron emission tomography (PET)/computed tomography (CT) scan. Before the scan, they will have blood and urine tests and a test of their heart function. The tracer will be given through a tube attached to a needle inserted into a vein in the arm. They will lie on a padded bed that fits inside a doughnut-shaped machine; the machine uses x-rays to create images of the inside of the body.
Some participants will have a PET/CT scan of their whole body. They will need only 1 visit.
Some participants will have a PET/CT scan of only their brain. They will have up to 2 visits. On the second visit, they will have a magnetic resonance imaging (MRI) scan of the brain. For the MRI, they will lie on a table that slides into a cylinder. The MRI uses magnetic fields to create images of the inside of the body.
Participants will receive a follow-up call to check on their well-being after their PET/CT scans.