Characterization of Rectal Cancer Hypoxia Using pO2 Histography and Immunohistochemistry for Hypoxia-Related Proteins

October 10, 2012 updated by: Memorial Sloan Kettering Cancer Center
The purpose of this study is to see if the cells in rectal cancer are oxygen-starved, or hypoxic. We know that as cancers grow bigger, parts of them are cut off from the oxygen supply and they become hypoxic, basically, lacking oxygen. Research has shown that cells that are oxygen-starved respond differently to treatment such as chemotherapy and radiation when compared to cells that are oxygen rich.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

30

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

  • United States
    • New York
      • New York, New York, United States, 10065
        • Memorial Sloan Kettering Cancer Center

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 to 89 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Biopsy proven adenocarcinoma of the rectum. If a biopsy was taken at an outside hospital, the slides and diagnosis will be reviewed and confirmed by a pathologist at MSKCC.
  • Mid to distal rectal tumors not requiring pre-op radiation or chemotherapy
  • Age ≥ 18
  • Age < 90
  • Karnofsky performance status ≥ 60
  • Ability to understand and the willingness to sign a written informed consent document.

Exclusion Criteria:

  • Current pregnancy
  • Uncontrolled intercurrent illness that would limit compliance with study requirements.

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: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: pO2 measurements
In patients meeting eligibility requirements outlined below, comparisons will be made between direct pO2 measurements using a tissue hypoximeter and IHC-assessed expression of hypoxia related proteins (HIF-1α, VEGF, CA IX and GLUT-1) in both normal and tumor tissue.
Procedure: Eppendorf hypoximeter
Patients consented to the protocol will proceed to their surgery date without any change in the standard preoperative period. After arriving in the operating room, the patient will undergo intravenous general anesthesia (or spinal/epidural anesthesia) by the anesthesiologist and will receive 40% oxygen. At this time, the principal investigator (along with the assistance of the operating surgeon and a member of the Department of Medical Physics) will use the Eppendorf hypoximeter to gather pO2 measurements. We anticipate that this will add no more than fifteen minutes to the planned procedure. Once the measurements are collected, the anesthesia will be adjusted as appropriate for the surgery and the procedure will continue as usual.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Measure pO2 in rectal cancers
Time Frame: 2 years
Measure pO2 in rectal cancers
2 years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Correlate immunohistochemical analysis of endogenous markers of hypoxia
Time Frame: 2 years
with direct tumor hypoximetry in tumor and normal tissue.
2 years

Collaborators and Investigators

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

Sponsor

Memorial Sloan Kettering Cancer Center

Investigators

  • Principal Investigator: José Guillem, MD, Memorial Sloan Kettering Cancer Center

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

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

August 1, 2010

Primary Completion (Actual)

October 1, 2012

Study Completion (Actual)

October 1, 2012

Study Registration Dates

First Submitted

August 25, 2010

First Submitted That Met QC Criteria

August 25, 2010

First Posted (Estimate)

August 27, 2010

Study Record Updates

Last Update Posted (Estimate)

October 11, 2012

Last Update Submitted That Met QC Criteria

October 10, 2012

Last Verified

October 1, 2012

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 10-121

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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