Validation of a Molecular Signature for Early Detection of Colorectal Cancer

Inclusion Criteria: * Participants between the ages of 50 and 75 (both included) at the time of informed consent signed. They must understand the nature, significance, implications and risks of the clinical trial and must sign the informed consent form. * Participants referred to the gastroenterology service who are going to undertake colonoscopy as a regular procedure for screening setting. * Participants asymptomatic, average risk for CRC. Average risk is defined as those individuals who are age 50 or older with no history of adenoma, colorectal cancer, or inflammatory bowel disease, and with no family history of CRC (first degree relatives). Exclusion Criteria: * Participants between the ages of 50 and 75 (both included) at the time of Informed consent signature. They must understand the nature, significance, implications and risks of the clinical trial and must sign the informed consent form. * Participants who have been diagnosed with CRC. The diagnosis must be subsequently confirmed by biopsy or surgery and pathological anatomy analysis during the study.