Prostate Hypoxia FAZA

March 3, 2026 updated by: University Health Network, Toronto

A Feasibility Study of Hypoxia Imaging in Patients With Prostate Cancer Using Positron Emission Tomography (PET) With 18F-Fluoroazomycin Arabinoside (18F-FAZA)

The purpose of this study is to look for low levels of oxygen (hypoxia) in prostate cancer using a special x-ray test called a positron emission tomography (PET)scan. Hypoxia may have an effect on how prostate cancer grows and responds to treatments like radiotherapy and chemotherapy. The use of PET scans to measure hypoxia may be better and simpler than the methods used previously.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

18

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Canada
    • Ontario
      • Toronto, Ontario, Canada, M5G 2M9
        • University Health Network

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age => 18 years
  • Histologic diagnosis of adenocarcinoma of the prostate
  • Bulky intermediate risk, high risk or metastatic prostate cancer

Bulky intermediate risk: cT1-2 with >50% of diagnostic biopsy cores containing cancer and Gleason 6 or 7 and prostate specific antigen (PSA) >10 and ≤20 OR

High risk:

cT1-2 with Gleason score ≥8; or cT1-2 with PSA >20; or cT3 OR N+ and/or M1 disease OR Newly diagnosed hormone-refractory prostate cancer - Intention to treat using radiotherapy +/- concurrent and adjuvant hormonal therapy

  • Intention to treat with radiotherapy, hormonal therapy, other systemic treatment for prostate cancer, or a combination of these according to the Princess Margaret Genitourinary Site policies.
  • Previous or concurrent anti-cancer therapy for the PET FAZA target lesion allowed
  • Ability to provide written informed consent to participate in the study

Exclusion Criteria:

  • Inability to lie supine for more than 60 minutes
  • Patients taking the drug disulfiram (Antabuse)
  • Contraindications for MRI: only applicable in cases where the PET FAZA target lesion is identified as the prostate gland. Patients with target lesions at other anatomic sites will not undergo MR imaging.
  • Patients weighing > 136 kg

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: PET FAZA imaging
PET FAZA imaging of tumor hypoxia in patients with prostate cancer
Other: 18F-Fluoroazomycin Arabinoside (18F-FAZA)
PET scan with the radiolabelled tracer 18F-FAZA

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Number of patients treated with the PET tracer FAZA to image primary tumor hypoxia in patients with prostate cancer prior to treatment with radiotherapy +/- concurrent and adjuvant hormonal therapy
Time Frame: 2 years
2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Health Network, Toronto

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 2012

Primary Completion (Actual)

February 18, 2025

Study Completion (Actual)

February 18, 2025

Study Registration Dates

First Submitted

March 23, 2012

First Submitted That Met QC Criteria

March 28, 2012

First Posted (Estimated)

March 30, 2012

Study Record Updates

Last Update Posted (Actual)

March 6, 2026

Last Update Submitted That Met QC Criteria

March 3, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 11-0953

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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