Metastatic Medullary Thyroid Cancer Clinical Trial
Official title:
Pre-Operative Nodal Staging of Thyroid Cancer Using Ultra-Small Superparamagnetic Iron Oxide Magnetic Resonance Imaging (USPIO MRI): Preliminary Study
The purpose of this research study is to see if a specific kind of MRI can identify small
and otherwise undetected abnormal lymph nodes in patients with thyroid cancer who are
undergoing surgery. The MRI is called Ultra-Small Superparamagnetic Iron Oxide Magnetic
Resonance Imaging (USPIO MRI), and uses an experimental contrast agent (ferumoxytol), to try
to identify these lymph nodes. The MRI uses magnetic waves to take images (pictures) of the
body and is commonly used in medical testing.
Ferumoxytol is FDA approved as an iron replacement product for the treatment of iron
deficiency anemia in adult patients with chronic kidney disease.
In this research study, the investigators want to see if Ferumoxytol will help to identify
very small metastases that are not usually seen on standard MRI scans. If the use of USPIO
MRI with the experimental agent ferumoxytol identifies very small metastases in lymph nodes,
your surgeon may decide to remove them. After the surgery, the nodes will be stored and then
analyzed to assess the ability of USPIO MRI and ferumoxytol to detect cancer in very small
metastases in the lymph nodes.
In this research study each participant will have the study MRI (USPIO MRI) before he/she
undergoes surgery. Radiologists (doctors trained to read and understand this test) will
review this study MRI. The imaging results will be compared with the pathology reports from
the tissue removed during your surgery.
Before the research starts (screening):
After signing this consent form, the participant will be asked to undergo some screening
tests or procedures to find out if the participant can be in the research study. These tests
and procedures were done as part of regular care and would have been done even if it turns
out that the participant does not take part in the research study.
- An tumor assessment by CT (Computerized Tomography) scan or thyroid US
(ultrasonography) scans.
- If these tests show that the participant is eligible to participate in the research
study, they will begin the study. If the participant does not meet the eligibility
criteria, they will not be able to participate in this research study.
- Because women who are pregnant or nursing a baby cannot be in this research study, the
participant will have a urine pregnancy test if they are a woman of child bearing
potential. The participant cannot be in this research study if they are pregnant or
breastfeeding.
- The investigator will also ask if the participant is allergic to iron. Because the
study agent contains iron, the participant cannot be in this research study if they
have this allergy.
After the screening procedures confirm that the Participant is eligible to participate in
the research study:
The participant will have one research MRI scan:
On the first day, the participant will receive the contrast agent intravenously. This visit
will take about 30 minutes.
Before injecting the contrast medium, the investigator will clean the skin on the
participant's forearm with alcohol. Then the investigator will insert a small plastic tube
(IV) into a vein in the participant's forearm. The investigator will give the participant
the study agent, ferumoxytol, through the IV line. The dose of ferumoxytol and the rate of
administration will not be more than the dose the FDA has approved when people who have
anemia use this for iron replacement therapy. Before, during and until 30 minutes after the
participant get the ferumoxytol, the investigator will monitor (watch) the participant
closely for any reactions to the infusion. The participant will return to Massachusetts
General Hospital, Boston MA 02114, 48-72 hours for the post contrast MRI. The participant
will not receive Ferumoxytol before this MRI. This study visit will take about 45 minutes.
The participant will lie on a padded table. The table will move into a scanning machine. The
space in the scanning machine is very narrow, just a bit wider than that participant's body.
The participant will need to lie quietly for about 30 minutes while the images are being
taken. If the participant has problems with claustrophobia (fear or discomfort in small or
confined spaces), let the study doctor or a member of the staff know before enrolling in
this study.
During the MRI procedure, the participant will hear loud "banging" noises. This is the sound
the powerful magnets make during the test. The participant will be given earplugs to help
reduce the noise. The participant will also be able to talk to the MRI technologist during
the test and the technologist will be able to talk to the participant. If, during the test,
the participant feels too uncomfortable to continue, let the technologist know, and the test
will be stopped immediately.
If any of the participant's MRIs show unusual results that might be important for your
health, the study doctor will contact the participant's primary surgeon. The participant's
MRIs will be reviewed by a radiologist. They will be read and interpreted and the results
will be communicated to the participant's surgeon before scheduled surgery. The MRI scan may
show abnormal signals in lymph nodes that are outside the area that the surgeon normally
removes and the surgeon may decide to extend the surgery to include this additional area.
During the scheduled surgery, the participant's surgeon will remove the participant's
thyroid and any lymph nodes that s/he believes are involved.
The surgery will be performed within 30 days of the MRIs. The imaging results will then be
compared with the tissue that is removed during the surgery.
The thyroid and involved lymph nodes that were surgically removed will be evaluated by a
pathologist and then stored for future assessment in case the thyroid cancer recurs in the
body. This will allow the investigators to compare the kind of tumor removed at time of
first surgery to the tumor that has recurred.
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Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic
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