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Iodine I 131 in Treating Patients With Thyroid Cancer

Dose-Response in Radionuclide Therapy of Thyroid Cancer

Status
Terminated
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00416949
Enrollment
9
Registered
2006-12-28
Start date
2006-04-30
Completion date
2009-10-31
Last updated
2018-07-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Head and Neck Cancer

Keywords

anaplastic thyroid cancer, insular thyroid cancer, thyroid gland medullary carcinoma, recurrent thyroid cancer, stage I follicular thyroid cancer, stage I papillary thyroid cancer, stage II follicular thyroid cancer, stage II papillary thyroid cancer, stage III follicular thyroid cancer, stage III papillary thyroid cancer, stage IVA follicular thyroid cancer, stage IVB follicular thyroid cancer, stage IVC follicular thyroid cancer, stage IVA papillary thyroid cancer, stage IVB papillary thyroid cancer, stage IVC papillary thyroid cancer

Brief summary

RATIONALE: Radioactive iodine kills thyroid cancer cells by giving off radiation. PURPOSE: This clinical trial is studying the side effects, best dose, and how well iodine I 131 works in treating patients with thyroid cancer.

Detailed description

OBJECTIVES: * Determine the relationship between estimated absorbed dose of iodine I 131 and tumor response or normal organ toxicity for different dosimetric measures, using data derived from clinical radionuclide therapy studies in patients with thyroid cancer. OUTLINE: Patients receive oral dosimetric iodine I 131 (\^131I) on day 2 and then undergo nuclear medicine imaging at 0.5-4 hours, 24, 48, and 72 hours after dosimetric \^131I. Single-photon emission computed tomography (SPECT)/CT scans are performed at 0.5-4 hours and 24 or 48 hours over the head and neck region, including the salivary glands. Subsequent SPECT/CT scans are performed over the candidate tumor sites. Patients undergo \^131I therapy on day 11. Saliva is collected on days 1 and 2, weeks 2 and 4, and months 3 and 6 to measure saliva flow rate. Blood is collected at baseline and periodically during study to measure FLT3 ligand levels. PROJECTED ACCRUAL: A total of 96 patients will be accrued for this study.

Interventions

Patient-specific 3D-RD dosimetry was applied to the data collected

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 100 Years
Healthy volunteers
No

Inclusion criteria

DISEASE CHARACTERISTICS: * Diagnosis of thyroid cancer * Measurable disease by CT scan or nuclear medicine imaging * Eligible, by standard of care criteria, for iodine I 131 therapy PATIENT CHARACTERISTICS: * Not pregnant or nursing * Negative pregnancy test * Fertile patients must use effective non-barrier method contraception (e.g., combined or progesterone-only oral contraceptive pill, intrauterine device, depot progesterone, or stable relationship with a partner who has had a vasectomy) * No other malignancy within the past 5 years except squamous cell or basal cell carcinoma of the skin * No nonthyroidal conditions known to affect iodine I 131 uptake (e.g., New York Heart Association class III or IV congestive heart failure or renal failure) * No alcoholism or drug abuse within the past 2 years * No severe emotional, behavioral, or psychiatric problems that would preclude study compliance (e.g., severe claustrophobia) PRIOR CONCURRENT THERAPY: * No intravenous water-soluble radiographic contrast within the past 4 weeks * No iodinated contrast agent within the past 3 months * No concurrent drugs that may affect thyroid or renal function (e.g., renal drugs, lithium, amiodarone, other iodine-containing medication, or corticosteroids) * No other concurrent investigational drugs

Design outcomes

Primary

MeasureTime frameDescription
Tumor Absorbed Doseup to 4 yearsTumor absorbed doses (Gy) calculated using patient-specific dosimetry.

Countries

United States

Participant flow

Participants by arm

ArmCount
Patient-specific 3D-RD Dosimetry
Applied a patient-specific dosimetry calculation method to the imaging data collected to calculate tumor absorbed doses, using 3D-RD method.
9
Total9

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyPatients refused to participate5

Baseline characteristics

CharacteristicPatient-specific 3D-RD Dosimetry
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
2 Participants
Age, Categorical
Between 18 and 65 years
7 Participants
Region of Enrollment
United States
9 Participants
Sex: Female, Male
Female
7 Participants
Sex: Female, Male
Male
2 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 3
other
Total, other adverse events
0 / 3
serious
Total, serious adverse events
0 / 3

Outcome results

Primary

Tumor Absorbed Dose

Tumor absorbed doses (Gy) calculated using patient-specific dosimetry.

Time frame: up to 4 years

Population: Was only able to analyze tumor data from 3 patients based on number of tumors that could be reliably imaged for analysis.

ArmMeasureValue (MEAN)Dispersion
Patient-specific 3D-RD DosimetryTumor Absorbed Dose6.6 GyStandard Deviation 4.54

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026