Green light during surgery may spare patients from lifetime of pills
NCT ID NCT04785443
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether using a special dye (indocyanine green) during total thyroidectomy helps surgeons see and protect the parathyroid glands, reducing the risk of permanent hypoparathyroidism. About 242 adults scheduled for total thyroid removal will be randomly assigned to receive the dye or standard care. The main goal is to see if fewer patients develop dangerously low calcium levels within 48 hours after surgery, which could prevent the need for lifelong medication.
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 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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About 242 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2021
- Expected to finish
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Jun 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 years and older
- 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: * Patient having to undergo a total thyroidectomy * Signed consent * Patient beneficiary of a social security regimen Exclusion Criteria: * Minor patient under 18 years old * Major patient protected by law or unable to give informed consent * Pregnant or breastfeeding woman * Thyroidectomy totalization * History of thyroid or parathyroid surgery * Participation refusal * Known allergy to ICG * Woman of child-bearing age not using adequate method of contraception
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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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CHRU de Brest
RECRUITINGBrest, 29609, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Pregnancy hormone hCG may hold clues to bone and gland health
- Thyroid surgery under the microscope: what 3,000 real operations reveal
- Can a pill tame thyroid eye disease?
- Smartphone app could ease neck pain after thyroid surgery
- Could a smartphone app speed up recovery after thyroid surgery?