APACC Study:Prospective Study on Aspirin Efficacy in Reducing Colorectal Adenoma Recurrence

Study Overview
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Brief Summary
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Experimental and epidemiologic studies have suggested that aspirin intake reduces the risk for colorectal cancer. In the APACC study we randomly assigned 291 patients to daily Aspirin or Placebo for 4 years. However, the available data are not sufficient to serve as the basis for firm recommendations

Detailed Description
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The APACC Study is a prospected, randomized, double-blind, placebo-controlled multicentre clinical trial design to test the efficacy of regular low-dose aspirin administration in reducing the recurrence rate of colorectal adenomatous polyps. The study involved 49 gastroenterology centers from various parts of France. Patients were eligible if they had either at least 3 adenomas irrespective of size, or at least one measuring 6mm in diameter or more histologically confirmed colorectal adenomatous polyp by the local pathologist, and 2 independent pathologists, underwent a complete colonoscopy with polypectomy and were then confirmed free of polyps, were aged between 18 and 75 years at recruitment, and were be able to conform to the protocol during the study period. During a 4-week run-in period before enrolment, all subjects took 300 mg aspirin per day to test tolerance and compliance with the treatment. They were then randomized to either of the following three groups: placebo, aspirin as acetylsalicylate of lysine 160 mg/day or aspirin as acetylsalicylate of lysine 300 mg/day. Information on compliance, tolerance of the treatment and concomitant disease is obtained at regular clinical visits every 4 months. Informations on factors such as smocking habits, previous medical history was recorded at enrollment. The primary outcomes were defined as the proportion of subjects in whom at least one new adenoma was detected, and the adenomatous polyp burden calculated as the sum of the diameters of these adenomas at the follow-up colonoscopy 1 and 4 years after enrollment.

Official Title
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Prospective Study on Aspirin Efficacy in Reducing Colorectal Adenoma Recurrence

Conditions
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Colon Adenomas

Intervention / Treatment
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* Drug: Aspirin


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients are aged between 18 and 75 years At least 3 adenomas irrespective size or at least one measuring 6mm or more All subjects had a clean colon at the study entry Exclusion Criteria: No personal history of colon cancer, no inflammatory bowel disease, no familial adenomatous polyposis, no regular use of aspirin

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Intervention/Treatment |
| --- |
|Drug: Aspirin|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Is daily soluble aspirin associated with a reduction in the risk for recurrent adenomas at 1 and 4 years after starting treatment. |  |  | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Aspirin, Colon cancer, Adenomas, Prevention