Can a new PET tracer spot thyroid cancer recurrence more clearly?
NCT ID NCT07753499
First seen Aug 07, 2026 · Last updated Aug 07, 2026
Summary
This trial is evaluating whether a new PET/CT imaging tracer, 68Ga-MY6349, can detect recurrent or metastatic thyroid cancer more effectively than the standard 68Ga-FAPI tracer. Adults with a history of treated thyroid cancer who show signs of possible recurrence will receive both tracers and undergo imaging to compare their diagnostic accuracy. The goal is to see if the new tracer improves detection and helps guide clinical management.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- 68Ga-MY6349, a radioactive tracer for PET/CT imaging
- What this could lead to
- If successful, this could provide a more accurate imaging method to detect recurrent or metastatic thyroid cancer, potentially guiding better treatment decisions.
- What could go wrong
- This is an early-stage diagnostic study, and the new tracer may not prove more accurate than existing methods. There are also risks associated with radiation exposure from PET/CT scans.
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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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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About 120 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Aug 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 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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18 to 90 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Adult patients (aged 18 years or older); * Patients with a history of previously treated thyroid cancer, including DTC and HGFCTC following thyroidectomy with or without 131I therapy, MTC after thyroidectomy, or ATC; either (1) evidence of structural or suspicious lesions on standard of care imaging or (2) biochemical evidence of disease in the absence of structural findings, defined as elevated thyrotropin suppressed thyroglobulin (Tgon ≥1 ng/mL after 131I ablation or ≥5 ng/mL without ablation) with negative anti thyroglobulin antibodies (\<20 IU/mL) for DTC and HGFCTC or elevated calcitonin (\>10 pg/mL) for MTC; * Patients who had scheduled both 68Ga-MY6349 and 68Ga-FAPI PET/CT scans; * Patients who were able to provide informed consent (signed by participant, parent or legal representative) and assent according to the guidelines of the Clinical Research Ethics Committee. * No other anticancer therapy within four weeks prior to PET imaging. Exclusion Criteria: * Pregnant or lactating patients; * Patients with a second primary tumor; * The inability or unwillingness of the research participant, parent, or legal representative to provide written informed consent.
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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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The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361000
RECRUITINGXiamen, Fujian, 361000, China
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Other studies related to the condition(s) this trial covers.
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