Colorectal CancerNCT00574353
Study Using Fluorine-18-Labeled Fluoro-Misonidazole Positron Emission Tomography to Detect Hypoxia in Locally Advanced (T3-T4 and./or N1)Primary Rectal Cancer Patients
A study testing Fluorine-18-Labeled Fluoro-Misonidazole Positron Emission in people with Colorectal Cancer, run by Memorial Sloan Kettering Cancer Center at 1 site in United States.
Trial summary
When used with a different radioactive tracer called FMISO, a PET scan can find areas of low oxygen in the tumor. We think that having areas of low oxygen is a reason why some tumors are hard to treat with radiation. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Colorectal Cancer
- What is being tested?
- Fluorine-18-Labeled Fluoro-Misonidazole Positron Emission
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 23 participants
- Where
- 1 siteUnited States
- Study dates
- 11 Dec 2007to 5 Jul 2024
- Phase
- Interventional
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Able to provide written informed consent
- Histologically confirmed diagnosis of Stage 2 or Stage 3 rectal carcinoma requiring preoperative radiation, chemotherapy or both, per treating physician
- 18 years of age or older
- Karnofsky performance status ≥ or = to 70
Who cannot join
- Women who are pregnant (confirmed by serum b-HCG in women of reproductive age) or breast feeding
Trial locations and contacts
1 site in 1 country.
United States1 site
Memorial Sloan Kettering Cancer Center
New York, New York, 10065
About this study
Official title: A Feasibility Study Using Fluorine-18-Labeled Fluoro-Misonidazole Positron Emission Tomography to Detect Hypoxia in Locally Advanced (T3-T4 and./or N1)Primary Rectal Cancer Patients
When used with a different radioactive tracer called FMISO, a PET scan can find areas of low oxygen in the tumor. We think that having areas of low oxygen is a reason why some tumors are hard to treat with radiation.
In a past study, FMISO PET scans were performed in 6 patients with rectal cancer that could not be operated on and that had spread to other areas. In this group of patients, FMISO PET scans were able to find the low oxygen areas in their tumors. But this study included only a few patients. In the present study, we want to use FMISO PET scans in patients who have tumors that can be operated on. This group of patients will have radiation, chemotherapy or both before they have their surgery. We want to see if FMISO PET can find low oxygen areas in this distinct group of patients.
Read the detailed description
Hypoxia is a characteristic feature of malignant solid tumors associated with poor prognosis and resistance to chemotherapy and radiation. It has also been shown (6) that the presence of hypoxia may reduce long-term survival post surgery. Hypoxia renders tumor cells up to three times more resistant to ionizing radiation than aerobic cells. The presence of hypoxic regions within tumors may be one factor leading to local failure after treatment with standard pre-operative radiotherapy doses. If these regions could be identified and verified using a non-invasive imaging technique prior to surgery, they could be specifically targeted using sophisticated planning techniques such as intensity modulated radiation therapy (IMRT) to deliver higher doses ionizing radiation with preoperative radiotherapy. Future studies using IMRT to "dose paint" areas of hypoxia within tumors will build upon the results of this feasibility study. Ultimately, by the delivery of differential dose of radiation to the tumor, in combination with surgery, the local control rates of rectal cancer patients may further be improved.
- Conditions
- Colorectal Cancer
- Being tested
- Fluorine-18-Labeled Fluoro-Misonidazole Positron Emission
- Keywords
- colorectal cancer, 07-151
- Medical subject headings
- Colorectal Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Fluorine-18-Labeled Fluoro-Misonidazole Positron EmissionRadiation
You will be scanned 2 to 3 times on the same day, but you will only be administered one dose of the FMISO tracer. The first scan will last about 30 minutes. Then you will have 1 to 3 hours to wait before you are scanned again. Some patients will undergo a second scan approximately one-and-a-half hours after the start of the first scan. This scan will last about 10 minutes. The final scan will occur between 2-4 hours after the start of the first scan. This final scan will also last about 10 minutes. During the PET scan, you may have a separate i.v. line put into your other arm so that we can take 2 to 3 blood samples. These samples will be less than half a teaspoon each. We are taking these blood samples to see how quickly FMISO leaves your blood stream. The first sample will be taken between 2 and 40 minutes after the FMISO is injected. The other two blood samples will be taken with each subsequent scan.
| Study group | Role | What they receive |
|---|---|---|
| 1 | Experimental | FMISO PET study. Receives: Radiation: Fluorine-18-Labeled Fluoro-Misonidazole Positron Emission |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants Successfully Scanned Using F-FMISO-PET Imaging
The uptake kinetics of [18F]-Fluoromisonidazole activity in the colorectal lesion was entered into a compartmental model to determine the rate constants of uptake (k1) and irreversible binding (k3) in the lesion on the PET scan at different times post injection. Also the tumor to background ratio was determine. A plot of k3 and TNB was plotted. This will help determine the Feasibility of a Non-invasive Method of Detecting Hypoxia, Using F-FMISO-PET Imaging in Colorectal Cancer Patients.
Measured: Post injection between 0-30 min, and again at the nominal times of 90 min and 180 min
Secondary outcomes (1)
Number of Participants Who Had Blood Samples Collected
Blood sample was taken in order to determine the blood pharmacokinetics of [18F]-Fluoromisonidazole in these participants.
Measured: Up to 180 minutes post injection
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Dec 2007 (estimated)
- Study start11 Dec 2007
- Primary completion5 Jul 2024
- Study completion5 Jul 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Colorectal CancerStudies of the same condition, open and under way.
- More trials run by Memorial Sloan Kettering Cancer CenterThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Screening
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 23 participants (actual)
Sponsor and investigators
- Lead sponsor
- Memorial Sloan Kettering Cancer Center
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- John Humm, PhD, Principal investigator, Memorial Sloan Kettering Cancer Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00574353
- Sponsor's protocol ID
- 07-151
- Status last verified
- Jul 2024
- First submitted
- 13 Dec 2007
- Last updated
- 9 May 2025
- Results posted
- Yes, on ClinicalTrials.gov
Study at a glance
From the registry record, last updated by the sponsor on 9 May 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Feasibility Study Using Fluorine-18-Labeled Fluoro-Misonidazole Positron Emission Tomography to Detect Hypoxia in Locally Advanced (T3-T4 and./or N1)Primary Rectal Cancer Patients
- ClinicalTrials.gov ID
- NCT00574353
- Acronym / sponsor ID
- 07-151
- Conditions
- Colorectal Cancer
- Keywords
- colorectal cancer, 07-151
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 23 participants (actual)
- Lead sponsor
- Memorial Sloan Kettering Cancer CenterUniversity, hospital or other
- Study start
- 11 Dec 2007 (actual)
- Primary completion
- 5 Jul 2024 (actual)
- Study completion
- 5 Jul 2024 (actual)
- First posted
- 17 Dec 2007 (estimated)
- Results
- Posted 9 May 2025
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
When used with a different radioactive tracer called FMISO, a PET scan can find areas of low oxygen in the tumor. We think that having areas of low oxygen is a reason why some tumors are hard to treat with radiation.
In a past study, FMISO PET scans were performed in 6 patients with rectal cancer that could not be operated on and that had spread to other areas. In this group of patients, FMISO PET scans were able to find the low oxygen areas in their tumors. But this study included only a few patients. In the present study, we want to use FMISO PET scans in patients who have tumors that can be operated on. This group of patients will have radiation, chemotherapy or both before they have their surgery. We want to see if FMISO PET can find low oxygen areas in this distinct group of patients.
Detailed description
Hypoxia is a characteristic feature of malignant solid tumors associated with poor prognosis and resistance to chemotherapy and radiation. It has also been shown (6) that the presence of hypoxia may reduce long-term survival post surgery. Hypoxia renders tumor cells up to three times more resistant to ionizing radiation than aerobic cells. The presence of hypoxic regions within tumors may be one factor leading to local failure after treatment with standard pre-operative radiotherapy doses. If these regions could be identified and verified using a non-invasive imaging technique prior to surgery, they could be specifically targeted using sophisticated planning techniques such as intensity modulated radiation therapy (IMRT) to deliver higher doses ionizing radiation with preoperative radiotherapy. Future studies using IMRT to "dose paint" areas of hypoxia within tumors will build upon the results of this feasibility study. Ultimately, by the delivery of differential dose of radiation to the tumor, in combination with surgery, the local control rates of rectal cancer patients may further be improved.
Study design
- Primary purpose
- Screening
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| 1 | Experimental | Radiation: Fluorine-18-Labeled Fluoro-Misonidazole Positron EmissionFMISO PET study. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- Able to provide written informed consent
- Histologically confirmed diagnosis of Stage 2 or Stage 3 rectal carcinoma requiring preoperative radiation, chemotherapy or both, per treating physician
- 18 years of age or older
- Karnofsky performance status ≥ or = to 70
Key exclusion criteria (1 listed)
- Women who are pregnant (confirmed by serum b-HCG in women of reproductive age) or breast feeding
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Fluorine-18-Labeled Fluoro-Misonidazole Positron EmissionYou will be scanned 2 to 3 times on the same day, but you will only be administered one dose of the FMISO tracer. The first scan will last about 30 minutes. Then you will have 1 to 3 hours to wait before you are scanned again. Some patients will undergo a second scan approximately one-and-a-half hours after the start of the first scan. This scan will last about 10 minutes. The final scan will occur between 2-4 hours after the start of the first scan. This final scan will also last about 10 minutes. During the PET scan, you may have a separate i.v. line put into your other arm so that we can take 2 to 3 blood samples. These samples will be less than half a teaspoon each. We are taking these blood samples to see how quickly FMISO leaves your blood stream. The first sample will be taken between 2 and 40 minutes after the FMISO is injected. The other two blood samples will be taken with each subsequent scan. | Radiation | 1 |
Primary outcome
Number of Participants Successfully Scanned Using F-FMISO-PET Imaging
Time frame: Post injection between 0-30 min, and again at the nominal times of 90 min and 180 min
The uptake kinetics of [18F]-Fluoromisonidazole activity in the colorectal lesion was entered into a compartmental model to determine the rate constants of uptake (k1) and irreversible binding (k3) in the lesion on the PET scan at different times post injection. Also the tumor to background ratio was determine. A plot of k3 and TNB was plotted. This will help determine the Feasibility of a Non-invasive Method of Detecting Hypoxia, Using F-FMISO-PET Imaging in Colorectal Cancer Patients.
1 secondary outcome
Number of Participants Who Had Blood Samples Collected
Time frame: Up to 180 minutes post injection
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 May 2025.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Memorial Sloan Kettering Cancer CenterLink provided by the sponsor.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
John Humm, PhD principal investigator
Memorial Sloan Kettering Cancer Center
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Fluorine-18-Labeled Fluoro-Misonidazole Positron Emission in people with Colorectal Cancer, run by Memorial Sloan Kettering Cancer Center at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 9 May 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Yes. Results are posted in the registry (first posted 9 May 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Participants Successfully Scanned Using F-FMISO-PET Imaging (time frame: Post injection between 0-30 min, and again at the nominal times of 90 min and 180 min). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 May 2025; AzTrials last refreshed its copy on 1 Nov 2026.