Aspirin in Treating Patients With Colorectal Cancer That Has Been Surgically Removed

This study has been completed.
National Cancer Institute (NCI)
Eastern Cooperative Oncology Group
North Central Cancer Treatment Group
Information provided by (Responsible Party):
Alliance for Clinical Trials in Oncology Identifier:
First received: November 1, 1999
Last updated: September 27, 2013
Last verified: September 2013

RATIONALE: Chemoprevention therapy is the use of certain drugs to try to prevent the development or recurrence of cancer. The use of aspirin may be an effective way to prevent the recurrence of polyps in colorectal cancer.

PURPOSE: Randomized phase III trial to study the effectiveness of aspirin in treating patients who have stage I, stage II, or stage III colorectal cancer that has been surgically removed.

Condition Intervention Phase
Colorectal Cancer
Drug: acetylsalicylic acid
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Double Blind (Subject, Caregiver, Investigator)
Primary Purpose: Prevention

Resource links provided by NLM:

Further study details as provided by Alliance for Clinical Trials in Oncology:

Enrollment: 719
Study Start Date: May 1993
Study Completion Date: January 2006
Primary Completion Date: March 2003 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Aspirin
325 mg/day PO
Drug: acetylsalicylic acid
Placebo Comparator: Placebo Drug: acetylsalicylic acid

Detailed Description:

OBJECTIVES: I. Determine whether aspirin administered at a dose of 325 mg/day will decrease the number and size of new adenomas in patients with Dukes' A/B1/B2/C colorectal cancer who have undergone curative surgical resection. II. Assess whether this dose of aspirin will increase disease-free survival in these patients.

OUTLINE: Randomized, double-blind study. Arm I: Chemoprevention. Enteric-coated Aspirin, ASA, NSC-27223. Arm II: Control. Placebo, PLCB.

PROJECTED ACCRUAL: Approximately 900 patients will be randomized over 4 years.


Ages Eligible for Study:   30 Years to 74 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

DISEASE CHARACTERISTICS: Histologically documented colorectal cancer that has been curatively resected, including: Dukes' A/B1 (T1-2, N0, M0) Dukes' B2/C (T3, N0, M0 and any T, N1, M0) disease-free more than 5 years post-resection Colonoscopy to the cecum (or small bowel anastomosis) with removal of all polyps required within 4 months of entry Preparation must be adequate to visualize mucosa and discern the presence of no further polyps No familial polyposis (more than 100 polyps at time of resection) No history of inflammatory bowel disease including ulcerative colitis or Crohn's disease

PATIENT CHARACTERISTICS: Age: 30 to under 75 Performance status: Physician's assessment of good general health required Life expectancy: At least 5 years Hematopoietic: Not specified Hepatic: Not specified Renal: Not specified Cardiovascular: No NYHA class III/IV status No history of angina No history of MI No history of stroke or TIAs No peripheral vascular disease No bleeding diathesis including hemorrhagic stroke No prophylactic aspirin for cardiovascular disease Other: No documented peptic ulcer disease within past 15 years No aspirin sensitivity including: Aspirin-induced asthma Bronchial hyper-reactivity Urticaria Angioedema No requirement for sodium warfarin or other anticoagulant No frequent (greater than 36 times/year) NSAID use within the past 5 years No recurrent arthritis or other musculoskeletal problems No narcotic or alcohol dependency (unless there has been at least a 6-month period of abstinence) No prior or concurrent malignancy within 5 years (including metastases) except nonmelanomatous skin cancer No pregnant or nursing women Effective contraception required of fertile women

PRIOR CONCURRENT THERAPY: No concurrent enrollment in a colon cancer treatment trial or other chemoprevention trial Biologic therapy: At least 6 months since immunosuppressive therapy (i.e., azathioprine, methotrexate, cyclosporine) Chemotherapy: Prior chemotherapy allowed for patients with Dukes' B2/C colorectal cancer No concurrent chemotherapy Endocrine therapy: Prior non-immunosuppressive steroid treatment allowed Radiotherapy: Prior radiotherapy allowed for patients with Dukes' B2/C colorectal cancer No concurrent radiotherapy Surgery: Curative resection required

  Contacts and Locations
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Please refer to this study by its identifier: NCT00002527

  Show 42 Study Locations
Sponsors and Collaborators
Alliance for Clinical Trials in Oncology
National Cancer Institute (NCI)
Eastern Cooperative Oncology Group
North Central Cancer Treatment Group
Study Chair: Robert S. Sandler, MD, MPH UNC Lineberger Comprehensive Cancer Center
Study Chair: Daniel D. Karp, MD Beth Israel Deaconess Medical Center
Study Chair: Charles L. Loprinzi, MD Mayo Clinic
  More Information

Responsible Party: Alliance for Clinical Trials in Oncology Identifier: NCT00002527     History of Changes
Other Study ID Numbers: CDR0000078380  CLB-9270  E-C9270  NCCTG-949251  NCI-P93-0048 
Study First Received: November 1, 1999
Last Updated: September 27, 2013
Health Authority: United States: Food and Drug Administration

Keywords provided by Alliance for Clinical Trials in Oncology:
colon cancer
rectal cancer

Additional relevant MeSH terms:
Colorectal Neoplasms
Colonic Diseases
Digestive System Diseases
Digestive System Neoplasms
Gastrointestinal Diseases
Gastrointestinal Neoplasms
Intestinal Diseases
Intestinal Neoplasms
Neoplasms by Site
Rectal Diseases
Analgesics, Non-Narcotic
Anti-Inflammatory Agents
Anti-Inflammatory Agents, Non-Steroidal
Antirheumatic Agents
Cardiovascular Agents
Central Nervous System Agents
Cyclooxygenase Inhibitors
Enzyme Inhibitors
Fibrin Modulating Agents
Fibrinolytic Agents
Hematologic Agents
Molecular Mechanisms of Pharmacological Action
Peripheral Nervous System Agents
Pharmacologic Actions
Physiological Effects of Drugs
Platelet Aggregation Inhibitors processed this record on May 02, 2016