Brain scans seek clues to mysterious bone pain
NCT ID NCT04125862
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at why people with Fibrous Dysplasia/McCune-Albright Syndrome feel pain, even when their bones don't show much damage. Researchers used brain scans and pain questionnaires in 37 patients and healthy volunteers. The goal was to understand the root causes of pain, not to test a treatment.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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37 people
The number who actually took part.
- Started
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Jan 2021
- Finished
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Dec 2025
- Lead sponsor
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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.
- Ages
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10 to 45 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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 (FD/MAS patients): * Male and Female subjects * 10-45 years of age * English Speaking ability sufficient to comprehend consent (with parental assistance if minor) * Diagnosis of Fibrous Dysplasia Exclusion Criteria for patients: * Younger than 10 or older than 45 years old * Weight \> 285 lbs (weight limit of the MRI table and \< 36lbs) * Surgery leaving implanted material * Contraindications to MRI scanning and PET scanning (including presence of a cardiac pacemaker or pacemaker wires, metallic particles in the body, vascular clips in the head or previous neurosurgery, prosthetic heart valves, claustrophobia, previous significant research related exposure to ionizing radiation) Exclusion Criteria for healthy controls: Same as for the patients, with the addition of the following: • Use of recreational or illicit drugs History of chronic pain
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Boston Children's Hospital
Boston, Massachusetts, 02115, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.