An observational study in Thyroid Cancer, Thyroid and Refractory Thyroid Cancer, sponsored by Memorial Sloan Kettering Cancer Center. Recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-04-27.
Sponsored by Memorial Sloan Kettering Cancer Center · Observational
The purpose of this study to learn more about the use of redifferentiating medications as a standard treatment for radioactive iodine/RAI-refractory thyroid cancer. This study is a registry study.
785 studies on the registry are indexed under Thyroid Neoplasms; 204 are open to participants now.
This study's planned enrollment of 100 is below the median of 178 across 241 observational studies indexed under Thyroid Neoplasms.
Browse Thyroid Neoplasms studies →Memorial Sloan Kettering Cancer Center is the lead sponsor of 1,964 studies on the registry; 327 are open to participants now.
Of its 135 completed or terminated interventional studies of FDA-regulated products, 71 (53%) have results posted.
Counted across the registry records on this site, refreshed daily.
All patients eligible to receive a redifferentiating agent in the adjuvant setting or in the treatment of structural metastatic disease not enrolled in a clinical trial will be approached for recruitment. All eligible patients will enroll in the study and will be followed indefinitely after enrollment.
Inclusion Criteria:
Inclusion Criteria:
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
Relapsed and refractory
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Other: Surveillance Visit
Follow-up visits will be carried out at intervals per usual clinical practice. Tolerance of medication and adverse events will be recorded in every visit.
Adverse events will be collected in every visit
The primary objective of this protocol is to prospectively collect data on patients with radio-iodine refractory thyroid cancer or patients unlikely to respond to radioactive iodine prior, during and after initiation of redifferentiating agents used as part of routine clinical care with or without radioactive iodine treatment.
Time frame: 2 years
Plan to share: Yes — Memorial Sloan Kettering Cancer Center supports the international committee of medical journal editors (ICMJE) and the ethical obligation of responsible sharing of data from clinical trials. The protocol summary, a statistical summary, and informed consent form will be made available on clinicaltrials.gov when required as a condition of Federal awards, other agreements supporting the research and/or as otherwise required. Requests for deidentified individual participant data can be made beginning 12 months after publication and for up to 36 months post publication. Deidentified individual participant data reported in the manuscript will be shared under the terms of a Data Use Agreement and may only be used for approved proposals. Requests may be made to: crdatashare@mskcc.org.
Started Feb 2023 (actual). Primary completion is estimated for Feb 2028, 60 months after the start.
Of 103 non-industry observational studies under Thyroid Neoplasms, half reached primary completion within 71 months of starting (the median), counting those still running; a quarter within 24 and three quarters within 311. This study's planned 60 months is below that.
Counting every sponsor, half of 112 studies reached it within 63 months; a quarter within 26 and three quarters within 311.
How these figures are worked out, and which studies are left out of them.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Memorial Sloan Kettering Cancer Center →