We're building a better ClinicalTrials.gov. Check it out and tell us what you think!
ClinicalTrials.gov Menu

Pilot Study to Determine Radioiodide Accumulation and Dosimetry in Breast Cancers Using 124I PET/CT

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT00725946
Recruitment Status : Terminated
First Posted : July 31, 2008
Last Update Posted : October 11, 2017
Information provided by (Responsible Party):
Irene L. Wapnir, Stanford University

Brief Summary:
This is a pilot imaging study for women whose tumors express NIS [Na+I- symporter, sodium iodide symporter]. Eligibility is limited to the presence of strong (3+) and/or plasma membrane staining in > 20% of cells as determined by immunohistochemical methods. A total of 10 patients will be imaged with 124I PET/CT (serial scans over 24 hour period) to determine radioiodide uptake and distribution in tumor tissue. Thyroid iodide uptake and retention will be blocked beginning one week prior to 124I PET/CT scan with thyroid hormone (T3) and methimazole (impedes organification). Tumor, organ and whole body dosimetry will be calculated in each patient.

Condition or disease Intervention/treatment Phase
Breast Cancer Breast Cancer Early Stage Breast Cancer (Stage 1-3) Breast Cancer Metastatic Breast Cancer Drug: Iodine-124 Radiation: PET/CT with Iodine-124 Early Phase 1

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 7 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: A Pilot Study to Determine Radioiodide Accumulation and Dosimetry in Breast Cancers Using 124I PET/CT
Study Start Date : February 2008
Actual Primary Completion Date : December 2012
Actual Study Completion Date : December 2012

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Breast Cancer
Drug Information available for: Iodine

Arm Intervention/treatment
Experimental: Iodine-124 PET-CT scan Drug: Iodine-124
Radiation: PET/CT with Iodine-124

Primary Outcome Measures :
  1. Radioiodide accumulation [ Time Frame: 2 years ]
    To evaluate radioiodide accumulation in women with immunohistochemically NIS (Na+/I- symporter)-positive breast cancers using 124I PET/CT.

Secondary Outcome Measures :
  1. Dosimetry [ Time Frame: 2 years ]
    To calculate dosimetry in tumor, thyroid and whole body.

Information from the National Library of Medicine

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, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:1. Stage I-IV breast cancer. Patients must have clinical or radiographic evidence of localized or metastatic disease.

2. Criteria for NIS-positivity are defined as: >= 20% of cells with plasma membrane and/or strong intracellular/plasma membrane immunoreactivity 3. Any previous therapy including radiation therapy is allowable. 4. Women 18 years of age or older. 5. Patients must have a life expectancy of at least 3 months 6. Patients with ECOG Performance Status 0-3 will be eligible. 7. If on chemotherapy, thyroid suppression should be initiated no sooner than two weeks after last chemotherapy cycle.

8. Ability to understand and willingness to sign a written informed consent document.

9. Discontinuation of hormonal or biological therapies for the 10 days of the study is preferred but not mandated.

10. Laboratory tests (CBC, comprehensive metabolic panel) must be performed within 120 day prior to study initiation. Exclusion Criteria:1. History of metastatic thyroid cancer 2. Exclude the use of cytotoxic, hormonal or biological agents for one week prior to and during imaging.

3. Pregnant or nursing patients will be excluded from the study as iodide can accumulate in the breast and is transported across the placenta.

4. Inability to tolerate thyroid hormone and/or methimazole pre-imaging treatment.

5. History of thyroid cancer (because patient could have concomitant thyroid cancer metastases and therefore competitively concentrate radioiodides) 6. Psychiatric or addictive disorders that are not adequately controlled and would preclude obtaining informed consent.

7. Patients with heart disease or other significant cardiac risk factors will be excluded from receiving thyroid suppressive therapy so as to avoid precipitating a cardiac arrhythmia.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00725946

Layout table for location information
United States, California
Stanford University School of Medicine
Stanford, California, United States, 94305
Sponsors and Collaborators
Stanford University
Layout table for investigator information
Principal Investigator: Irene L. Wapnir Stanford University
Layout table for additonal information
Responsible Party: Irene L. Wapnir, Associate Professor, Stanford University
ClinicalTrials.gov Identifier: NCT00725946    
Other Study ID Numbers: BRS0001
98583 ( Other Identifier: Stanford University Alternate IRB Approval Number )
SU-03142008-1044 ( Other Identifier: Stanford University )
IRB-11927 ( Other Identifier: Stanford Universtiy )
First Posted: July 31, 2008    Key Record Dates
Last Update Posted: October 11, 2017
Last Verified: October 2017
Additional relevant MeSH terms:
Layout table for MeSH terms
Breast Neoplasms
Neoplasms by Site
Breast Diseases
Skin Diseases
Cadexomer iodine
Anti-Infective Agents, Local
Anti-Infective Agents
Trace Elements
Physiological Effects of Drugs