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Lesion Dosimetry With Iodine-124 in Metastatic Thyroid Carcinoma

NCT03647358 · Status: RECRUITING · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2026-04-14

No results posted yet for this study

Summary

The purpose of this study is to evaluate a new diagnostic imaging test, positron emission tomography (PET), with a different radioactive form of iodine called iodine-124. This form is able to accurately measure the amount of radioactive iodine uptake in the cancer. If the new test determines sufficient radioiodine uptake in the cancer, treatment will continue as usual. However, if the new test shows only low radioiodine uptake, a decision may be made that the benefit from radioiodine therapy is insufficient and that another form of therapy is preferred.

Conditions

  • Thyroid Carcinoma
  • Metastatic Thyroid Carcinoma

Interventions

DEVICE

PET/CT Scan

Up to four whole-body PET scans (approximately 24, 48, and 120 hours post 124I oral dose) will be performed on one of the GE Discovery 710 or 690 PET scanners.

DRUG

Iodine-124

Patients will receive 0.9 mg injections of rhTSH on two consecutive days. Twenty-four hours after the last injection of rhTSH each patient will receive approximately 5 mCi (range: 4-7 mCi) of 124I orally as a single dose. (If a holiday is present in the work week, 124I can be administered orally on Day 2, if needed).

Sponsors & Collaborators

Principal Investigators

  • Ravinder Grewal, MD · Memorial Sloan Kettering Cancer Center

Study Design

Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2018-08-21
Primary Completion
2027-08-31
Completion
2027-08-31
FDA Drug
Yes

Countries

  • United States

Study Locations

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Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03647358 on ClinicalTrials.gov