Thyroid Hormone Replacement After Radio Iodine: Value and Efficacy (NCT06647602) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
Thyroid Hormone Replacement After Radio Iodine: Value and Efficacy
Netherlands40 participantsStarted 2026-09-01
Plain-language summary
This study will be a multicentre prospective cohort study on TH-substitution after thyroid hormone withdrawal preceding radioiodine treatment.
Who can participate
Age range
18 Years – 75 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Histologically confirmed DTC (papillary thyroid carcinoma, follicular thyroid carcinoma, oncocytic thyroid carcinoma)
* Classified as high-risk DTC according to the ATA guidelines or, patients for whom the risk of a recurrence is estimated to be higher based on clinical features (assessed by their treating physician).
* Prepared for RAI-therapy with TH-withdrawal
* Patients must be fit to adhere to the study protocol
* Patients must be able to read and understand the Dutch language
Exclusion Criteria:
* Pregnancy
* Patients with comorbidities, such as severe heart failure, (poorly controlled) atrial fibrillation, of which the treating physician decides that L-T3 is unsuitable.
* Conditions or drugs interfering with thyroid hormone uptake:
* Patients with a history of atrophic gastritis
* Patients using proton-pomp inhibitors
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
TSH after two weeks of TH substitution
Timeframe: Before and after 2 weeks of TH-substitution