Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

Lesion Dosimetry With 124-Iodine in Metastatic Thyroid Carcinoma

This study is ongoing, but not recruiting participants.
Gustave Roussy, Cancer Campus, Grand Paris
Information provided by (Responsible Party):
Memorial Sloan Kettering Cancer Center Identifier:
First received: May 6, 2008
Last updated: March 8, 2017
Last verified: March 2017

One of the most effective treatments for metastases from thyroid cancer is a form of radioactive iodine known as 131-I. For more than 50 years, 131-I has been used to find and destroy thyroid cancer cells that have spread to other parts of the body. In many cases this treatment destroys the metastatic cells. However, in some patients it does not appear to work completely. This study is designed to use a slightly different form of radioactive iodine (called 124-I) which can precisely predict the amount of radiation that each metastatic lesion will receive.

124-I was developed at Memorial Sloan-Kettering in the 1950s and has been used here and at many other medical centers around the world for diagnostic studies. It has been found to be very safe and effective at finding metastatic lesions. The high resolution of newer PET scanners now allows us to carefully determine how much radiation each metastatic lesion will receive. If 124-I can accurately predict which patients will not respond to 131-I treatments we can then avoid exposing those patients to unnecessary radiation. For the rest of the patients we can custom tailor the 131-I dose to destroy the metastatic lesions.

Condition Intervention Phase
Thyroid Cancer
Radiation: 131 I-iodine (131-I), 124 I-iodine (124-I)
Phase 1

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: No masking
Primary Purpose: Treatment
Official Title: Lesion Dosimetry With 124-Iodine in Metastatic Thyroid Carcinoma

Resource links provided by NLM:

Further study details as provided by Memorial Sloan Kettering Cancer Center:

Primary Outcome Measures:
  • To estimate the relationship between the radiation dose and response to radiation at one year for metastatic lesions arising from differentiated thyroid carcinoma, following a single therapeutic administration of 131-Iodine. [ Time Frame: conclusion of the study ]

Secondary Outcome Measures:
  • To determine the diagnostic sensitivity of the 124-Iodine whole body scan based on the 131-Iodine post-therapy scan (the "gold-standard"). [ Time Frame: conclusion of the study ]

Enrollment: 20
Study Start Date: March 2005
Estimated Study Completion Date: March 2018
Estimated Primary Completion Date: March 2018 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
131 I-iodine (131-I), 124 I-iodine (124-I)
Radiation: 131 I-iodine (131-I), 124 I-iodine (124-I)
Those who have demonstrated metastases which concentrate radioiodine will undergo routine testing to determine the MTA for blood and lung tissue. This will be performed with 124-I instead of 131-I. If the diagnostic scans (done with 123-I) show that the metastatic lesions concentrate radioiodine, the patient will be treated with 131-I based on standard of care discussions at a tumor board meeting. One week following the 131-I therapy, a whole body scan will be obtained and compared with the 124-I diagnostic scan. One year later, another extent of disease workup will be performed which will include 124-I dosimetry and scanning.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Adult thyroid carcinoma patients who have had a total thyroidectomy, histology confirmed by an MSKCC attending pathologist, and radioiodine remnant ablation.
  • Adult thyroid carcinoma patients who have previously demonstrated radioiodine-avid metastases and are about to undergo Thyrogen-assisted dosimetry at MSKCC.
  • The patient and physician are planning to administer 131-I for therapy if persistent radioiodine-avid metastases are present.
  • Men and women of all races, ethnicities, and religious backgrounds are eligible.
  • All subjects must have measurable disease, documented within the previous six months by ultrasonography (US), MRI, or non-contrast CT scanning.

Exclusion Criteria:

  • Thyroid cancer patients who do not have metastases.
  • Thyroid cancer patients who have not demonstrated that their metastases concentrate radioiodine.
  • Patients who are under therapy for other active cancers.
  • Anaplastic or Medullary thyroid carcinoma.
  • Age less than 18 years.
  • Patient who have received a therapeutic dose of radioiodine within the preceding nine months will not be eligible.
  • Patients who plan to withdraw from thyroid hormone prior to dosimetry.
  • Patients who are pregnant.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00673010

United States, New York
Memorial Sloan Kettering Cancer Center
New York, New York, United States, 10065
Sponsors and Collaborators
Memorial Sloan Kettering Cancer Center
Gustave Roussy, Cancer Campus, Grand Paris
Principal Investigator: Ravinder Grewal, MD Memorial Sloan Kettering Cancer Center
  More Information

Additional Information:
Responsible Party: Memorial Sloan Kettering Cancer Center Identifier: NCT00673010     History of Changes
Other Study ID Numbers: 04-116
Study First Received: May 6, 2008
Last Updated: March 8, 2017

Keywords provided by Memorial Sloan Kettering Cancer Center:

Additional relevant MeSH terms:
Thyroid Diseases
Thyroid Neoplasms
Endocrine System Diseases
Endocrine Gland Neoplasms
Neoplasms by Site
Head and Neck Neoplasms
Cadexomer iodine
Anti-Infective Agents, Local
Anti-Infective Agents
Trace Elements
Growth Substances
Physiological Effects of Drugs processed this record on May 25, 2017