Could a new PET scan pinpoint the cause of Cushing's syndrome?
NCT ID NCT07350707
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests a new type of PET scan using a tracer called 68Ga-Pentixafor to help doctors tell apart the two main types of Cushing's syndrome (ACTH-dependent vs. ACTH-independent) and find the source of the problem. Researchers will enroll 160 adults with suspected or confirmed Cushing's syndrome. If it works, this scan could make diagnosis more accurate and reduce the need for multiple tests.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- 68Ga-Pentixafor (a radioactive tracer for PET scans)
- What this could lead to
- If successful, this imaging method could help doctors more accurately diagnose the type of Cushing's syndrome and locate hard-to-find tumors, leading to better treatment decisions.
- What could go wrong
- This is an early-phase study (Phase 1/2) with only 160 participants. The new scan may not prove more accurate than existing methods, and results may not apply to all patients.
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.
- Phase
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Phase 1/2
Runs two stages together: safety and dose first, then whether the treatment works.
- Participants
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About 160 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2023
- Expected to finish
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Feb 2027
An estimate. End dates often move.
- 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 80 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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: * Clinical suspicion or confirmed diagnosis of Cushing's syndrome, based on clinical features (e.g., central obesity, moon face, muscle weakness) and/or abnormal cortisol-related biochemical tests. * Able and willing to undergo PET/CT imaging with both 68Ga-Pentixafor and, when applicable, 68Ga-DOTATATE. * Willing to provide informed consent for participation in the study. Exclusion Criteria: * Prior administration of therapeutic or investigational radiopharmaceuticals within 5 physical half-lives before study imaging. Pregnancy or breastfeeding. * History of allergic reaction to gallium-based tracers or related compounds. * Clinically unstable condition or severe organ dysfunction that, in the investigator's opinion, would interfere with PET/CT imaging or study participation. * Inability to complete both 68Ga-Pentixafor and, when applicable, 68Ga-DOTATATE PET/CT imaging due to clinical or logistical reasons.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Peking Union Medical College Hospital
RECRUITINGBeijing, Beijing Municipality, 100730, China
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- Adrenal gland size may predict steroid needs after Cushing's surgery
- 600-Patient study seeks answers for mysterious adrenal gland disorders
- New PET tracer aims to reveal hidden Hormone-Making tumors
- Scientists uncover genetic secrets behind rare hormone disorders