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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

NCT00574353 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 23

Last updated 2025-05-09

Study results available
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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.

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.

Conditions

Interventions

RADIATION

Fluorine-18-Labeled Fluoro-Misonidazole Positron Emission

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.

Sponsors & Collaborators

Principal Investigators

  • John Humm, PhD · Memorial Sloan Kettering Cancer Center

Study Design

Allocation
NA
Purpose
SCREENING
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2007-12-11
Primary Completion
2024-07-05
Completion
2024-07-05

Countries

  • United States

Study Locations

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Entities

Diseases
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 NCT00574353 on ClinicalTrials.gov