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Minor5 versionsRe-verified since Sep 19, 2025, no change to tracked fieldsv44-v48
MinorEligibility criteria expanded, about 15 wordsv43
Minor2 versionsRe-verified since Sep 4, 2025, no change to tracked fieldsv41-v42
MinorStart date changed from estimate of Jun 26, 2025 to Jun 18, 2025v40
MinorStart date: Jun 24, 2025 to Jun 26, 2025v39
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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Stopped: an ongoing trial was terminated, suspended or withdrawn.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:
SARS-CoV-2 is the virus that causes COVID-19. Some people who recover from COVID-19 have long-term symptoms that affect the brain. These include headaches; loss of taste and smell; sleep problems; thinking problems; depression; and anxiety. Researchers want to know if a tracer (a substance that is injected into a person s body before an imaging scan) can help identify inflammation in people with these brain disorders.
Objective:
To see if a radioactive tracer (\[11C\]PS13) can highlight brain inflammation in those who had COVID-19 but still have symptoms that affect the brain.
Eligibility:
Adults aged 18 to 70 years with post COVID-19 brain disorders who are enrolled in protocol 000089 or 000711. Healthy volunteers are also needed.
Design:
Participants will have up to 5 clinic visits.
Participants will be screened. They will have blood tests and a test of their heart function.
They will have imaging scans:
Magnetic resonance imaging (MRI): They will lie on a table that slides into a metal tube. Pictures will be taken of the brain.
Positron emission tomography (PET): A needle attached to a thin tube will be inserted into a vein in the arm. The tracer will be injected through the tube. Another needle attached to a thin tube will be inserted into the wrist or inside of the elbow of the other arm to draw blood. They will lie still on a bed while a machine captures images of their brain. The scan will last about 2 hours.
Study involvement is 11 to 14 weeks....