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Colorectal CancerPhase 1NCT00905918

Vitamin E Supplements in Treating Patients Undergoing Surgery for Colorectal Cancer

A Phase 1 study testing vitamin E and laboratory biomarker analysis in people with Colorectal Cancer, run by Rutgers, The State University of New Jersey at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

RATIONALE: Vitamin E may help prevent the development of cancer. Studying samples of tissue from patients with colorectal cancer who receive Vitamin E before undergoing surgery in the laboratory may help doctors learn more about how Vitamin E changes biomarkers related to colorectal cancer. 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?
vitamin E and laboratory biomarker analysis
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
14 participants
Where
1 siteUnited States
Study dates
Jun 2009to May 2014
Phase
Phase 1
Are there results?
None posted in the registry

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

DISEASE CHARACTERISTICS:

  • Suspected or confirmed colorectal cancer meeting the following criteria:
  • Scheduled for surgery as the initial treatment
  • Referred to the Cancer Institute of New Jersey or the Robert Wood Johnson University Hospital
  • No requirement for urgent surgery (i.e., surgery that cannot wait for 2 weeks)

PATIENT CHARACTERISTICS:

  • Not pregnant or nursing
  • Negative pregnancy test
  • Patients deemed in adequate health to undergo colon resection by their surgeon
  • No uncontrolled diabetes, uncontrolled BP, chronic congestive heart failure, or history of renal insufficiency
  • No personal or family history of bleeding disorders
  • No known history of problems absorbing fats (e.g., Crohn disease, cystic fibrosis)

PRIOR CONCURRENT THERAPY:

  • See Disease Characteristics
  • No prior chemotherapy or radiotherapy for the treatment of this cancer
  • More than 2 weeks since prior NSAIDs or corticosteroids
  • No concurrent colestipol or orlistat
  • No concurrent warfarin or dicumarol
  • No concurrent supplementation of vitamin E
  • A multivitamin containing ≤ 60 IU vitamin E allowed

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Rutgers Cancer Institute of New Jersey

    New Brunswick, New Jersey, 08903

Other trials in United States

About this study

Official title: A Randomized Study to Investigate the Presence of Tocopherol Metabolites in the Colon

RATIONALE: Vitamin E may help prevent the development of cancer. Studying samples of tissue from patients with colorectal cancer who receive Vitamin E before undergoing surgery in the laboratory may help doctors learn more about how Vitamin E changes biomarkers related to colorectal cancer.

PURPOSE: This randomized early phase I trial is studying giving vitamin E supplements to see how it affects biomarkers in patients undergoing surgery for colorectal cancer.

Read the detailed description

OBJECTIVES:

  • Determine the effect of high γ-tocopherol vitamin E mixture supplementation on plasma levels of α-, γ-, and δ-tocopherols, and prostaglandin E_2 in patients planning to undergo surgery for colorectal cancer by comparing the blood samples collected before and after the supplementation in each of the groups and analyzing levels of tocopherols and their metabolites in urine samples.
  • Test the hypothesis that the supplementation reduces oxidative and nitrosative stress by measuring plasma levels of F_2-isoprostane, C-reactive protein, and 3-nitrotyrosine as well as urinary levels of 8-hydroxy-2-deoxyguanosine (8-OHdG).
  • Determine the levels of α-, γ-, and δ-tocopherols in colon tissues and analyze immunohistochemically for cell proliferation, apoptosis, β-catenin localization, RXR expression, cyclooxygenase-2, 8-OHdG, and 3-nitrotyrosine levels in colon cancer tissue slides.

OUTLINE: This is a multicenter study. The first 5 patients receive no supplements (to establish laboratory standards), all other patients are randomized to 1 of 3 treatment arms.

  • Arm I: Patients receive no intervention before undergoing planned surgery.
  • Arm II: Patients receive oral high γ-tocopherol vitamin E mixture supplementation once daily for 1 week before undergoing planned surgery.
  • Arm III: Patients receive oral high γ-tocopherol vitamin E mixture supplementation once daily for 2 weeks before undergoing planned surgery.

Blood and urine samples are collected at baseline and on the day of surgery for tocopherol and biomarker analysis. A sample of colon tissue is removed during standard surgical resection for chemical analysis. Plasma, tumor tissue, and nontumorous tissues are analyzed for levels of F_2-isoprostane, 8-OHdG, 3-nitrotyrosine, and prostaglandin E_2 via enzyme immunoassays and for levels of α-, γ-, and δ-tocopherols via HPLC.

Being tested
vitamin E, laboratory biomarker analysis
Keywords
colon cancer, rectal cancer
Medical subject headings
Colorectal Neoplasms, Colonic Neoplasms, Rectal Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • vitamin EDietary supplement

    Given orally

  • laboratory biomarker analysisOther

    All patients undergo biomarker analyses

Study groups in NCT00905918
Study groupRoleWhat they receive
Arm INo interventionPatients receive no intervention before undergoing planned surgery.
Arm IIExperimentalPatients receive oral high γ-tocopherol vitamin E mixture supplementation once daily for 1 week before undergoing planned surgery.
Receives: Dietary Supplement: vitamin E; Other: laboratory biomarker analysis
Arm IIIExperimentalPatients receive oral high γ-tocopherol vitamin E mixture supplementation once daily for 2 weeks before undergoing planned surgery.
Receives: Dietary Supplement: vitamin E; Other: laboratory biomarker analysis

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Plasma and urine levels of α-, γ-, and δ-tocopherols, and prostaglandin E2

    Measured: 4 years

  2. Plasma levels of F2-isoprostane, C-reactive protein, and 3-nitrotyrosine and urinary levels of 8-hydroxy-2-deoxyguanosine (8-OHdG)

    Measured: 4 years

  3. Presence in colon tissue of α-, γ-, and δ-tocopherols, cell proliferation and apoptosis indicators, β-catenin localization, RXR expression, and cyclooxygenase-2, 8-OHdG, and 3-nitrotyrosine levels

    Measured: 4 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 May 2009 (estimated)
  2. Study startJun 2009
  3. Primary completionJun 2013
  4. Study completionMay 2014

Resources

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 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
14 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00905918
Sponsor's protocol ID
120901
Other IDs
CDR0000642446, 0220090065, P30CA072720
Status last verified
Sep 2014
First submitted
20 May 2009
Last updated
30 Sep 2014
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing vitamin E and laboratory biomarker analysis in people with Colorectal Cancer, run by Rutgers, The State University of New Jersey 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?

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 30 Sep 2014. 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.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Plasma and urine levels of α-, γ-, and δ-tocopherols, and prostaglandin E2 (time frame: 4 years). The study lists 3 primary outcomes in all. 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 30 Sep 2014.

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