MedicalResearch.com Interview with:
Prof. Dr. med. Hermann Brenner
Clinical Epidemiology and Aging Research
German Cancer Research Center
Foundation under Public Law
MedicalResearch.com: What is the background for this study?
Response: Colorectal cancer is the third most common cancer globally, accounting for almost 900.000 deaths every year. Most of these deaths could be prevented by screening colonoscopy with early detection and removal of precursors of the cancer. However, capacities and use of screening colonoscopy are limited in most parts of the world, and low-cost but reliable noninvasive screening tests are important alternative primary screening tests.
The currently best established noninvasive tests are fecal immunochemical tests for hemoglobin (FITs) which are offered for colorectal cancer screening in an increasing number of countries. Although FITs detect the majority of colorectal cancers they detect approximately one out of four advanced adenomas only, the precursors of most colorectal cancers.
We hypothesized that this proportion could be increased by taking a single pill of aspirin two days prior to collecting the stool sample for FIT, because the well-established antithrombotic effects of aspirin might favor detecting occult bleeding from colorectal cancer or its precursors.