Colon Cancer Clinical Trial

Atorvastatin Calcium, Oligofructose-Enriched Inulin, or Sulindac in Preventing Cancer in Patients at Increased Risk of Developing Colorectal Neoplasia

Summary

This randomized phase II trial is studying atorvastatin calcium to see how well it works compared to oligofructose-enriched inulin, sulindac, or a placebo in preventing cancer in patients at increased risk of developing colorectal neoplasia. Chemoprevention is the use of certain drugs or substances to keep cancer from forming, growing, or coming back. The use of atorvastatin calcium, oligofructose-enriched inulin, or sulindac may stop cancer from forming in patients at increased risk of colorectal neoplasia. It is not yet known whether atorvastatin calcium, oligofructose-enriched inulin, or sulindac are more effective than a placebo in preventing cancer in patients at increased risk of developing colorectal neoplasia.

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Full Description

PRIMARY OBJECTIVE:

I. Percent change in number of rectal aberrant cryptic foci (ACF) as measured by magnification chromoendoscopy

SECONDARY OBJECTIVES:

I. Screening for possible phase III testing II. Effects on proliferation (Ki67 expression) and apoptosis (caspase-3 expression) as measured by biopsy samples obtained from normal-appearing rectal mucosa at baseline and after completion of study treatment III. Correlation of endoscopic features with histologic characteristics of rectal ACF IV. Observation of the natural history of rectal ACF in patients receiving placebo V. Adverse events VI. Utilization of a biospecimen repository archive

OUTLINE: This is a multicenter, prospective, randomized, partially blinded, placebo-controlled study. Patients are stratified according to history of prior surgical resection of the colon (yes vs no) and number of rectal aberrant cryptic foci (ACF) (5-9 vs >= 10). Patients are randomized to 1 of 4 treatment arms.

ARM I: Patients receive oral atorvastatin calcium once daily.

ARM II: Patients receive oral sulindac twice daily.

ARM III (blinded arm): Patients receive oral oligofructose-enriched inulin (Raftilose Synergy 1) twice daily.

ARM IV (blinded arm): Patients receive an oral placebo twice daily.

In all arms, treatment continues for 6 months in the absence of unacceptable toxicity.

Tissue samples are collected at baseline and at the completion of study treatment. Tissue is examined by immunohistochemistry for proliferation (Ki67) and apoptosis (cleaved caspase-3).

After completion of study treatment, patients are followed at approximately 30 days.

View Eligibility Criteria

Eligibility Criteria

Criteria:

ECOG performance status 0-2
Platelet count >= 100,000/mm^3
Fertile patients must agree to use effective contraception
No history of inflammatory bowel disease (i.e., Crohn's disease or ulcerative colitis)
No invasive malignancy within the past 5 years except nonmelanoma skin cancer or colorectal cancer
No history of endoscopically-confirmed peptic ulcer disease
No history of allergic reactions attributed to compounds of similar chemical or biological composition to the study agents
No history of chronic liver disease or unexplained persistent elevations of serum transaminases
No history of allergic-type reactions, including asthma or urticaria, to aspirin or NSAIDs

No uncontrolled intercurrent illness including, but not limited to, any of the following:

Ongoing or active infection
Symptomatic congestive heart failure
Unstable angina pectoris
Cardiac arrhythmia
Psychiatric illness or social situations that would preclude study compliance
At least 6 weeks since prior oral corticosteroids
Creatinine =< 1.5 times ULN
Creatine phosphokinase =< 1.5 times ULN
Not pregnant or nursing
At least 6 weeks since prior statins

At increased risk for developing sporadic colorectal neoplasia, as defined by 1 of the following:

History of colon cancer (excluding stage IV or Dukes' D tumors)
Must have completed prior adjuvant therapy for colon cancer >= 12 months ago

History of colorectal adenomas, meeting any of the following criteria:

>= 1 cm in diameter
>= 3 in total number
Any component of villous morphology
High-grade dysplasia

At least 5 rectal aberrant cryptic foci (ACF), by magnification chromoendoscopy, meeting both of the following criteria:

At least 5 aggregated crypts in a single grouping (maximum spacing between crypts must be =< 2 times the average crypt diameter)
Crypt diameter >= 1.5 times the diameter of surrounding normal crypts
No history of rectal cancer, familial adenomatous polyposis, or hereditary nonpolyposis colorectal cancer
Negative pregnancy test
At least 6 months since prior and no concurrent regular use* of nonsteroidal anti-inflammatory drugs** (NSAIDs) or statins
Concurrent aspirin at cardioprotective doses (=< 162.5 mg/day or 325 mg every other day) allowed
No prior rectal surgery involving mucosal resection
No prior pelvic radiation therapy
No concurrent regular use* of cyclooxygenase-2 inhibitors
No concurrent anticoagulant drugs (i.e., warfarin, heparin, clopidogrel bisulfate, or extended-release dipyridamole)

No concurrent use of any of the following:

Fibrates (e.g., gemfibrozil or fenofibrate)
Cyclosporine
Erythromycin or macrolide antibiotics
Protease inhibitors
Azole antifungals
Diltiazem
Verapamil

Compounds containing niacin or nicotinic acid

Defined as 7 consecutive days for > 3 weeks OR > 21 days total during study participation
Patients may be eligible for study treatment after discontinuing NSAIDs for 12 weeks, at the discretion of their health care provider
No other concurrent investigational agents
No planned (or likely to require) clinically indicated colonoscopy or flexible sigmoidoscopy during study treatment
Bilirubin =< 1.5 times ULN
Hemoglobin >= lower limit of normal
AST =< 1.5 times upper limit of normal (ULN)
Alkaline phosphatase =< 1.5 times ULN

Study is for people with:

Colon Cancer

Phase:

Phase 2

Estimated Enrollment:

85

Study ID:

NCT00335504

Recruitment Status:

Completed

Sponsor:

National Cancer Institute (NCI)

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There is 1 Location for this study

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Mayo Clinic
Rochester Minnesota, 55905, United States

How clear is this clinincal trial information?

Study is for people with:

Colon Cancer

Phase:

Phase 2

Estimated Enrollment:

85

Study ID:

NCT00335504

Recruitment Status:

Completed

Sponsor:


National Cancer Institute (NCI)

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