About this trial
Multicenter, inter-regional, case-control study with the primary objective of evaluating the discriminative power of the blood biomarker TFPI-1 to separate patients with histologically proven CRC from an asymptomatic control population between 50 and 75 years of age with normal colonoscopy.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Patients with suspected colorectal cancer for which colonoscopy is indicated.
Patients between 50 and 75 years old, asymptomatic from the digestive point of view (for example referred for colonoscopy as part of a pre-operative check-up of an inguinal hernia or 3 months after an episode of complicated sigmoiditis), for whom a follow-up colonoscopy is indicated.
If the post-inclusion colonoscopy is normal, no biopsy will be performed and patients will be assigned to the control group.
If the colonoscopy performed after inclusion is abnormal (presence of at least one mucosal lesion), patients will be assigned to the "colorectal cancer" group or to the "polyps" group depending on the results of the anatomopathological analysis of the lesion(s)
Disqualifiers
All clinical situations outside of CRC that could increase TFPI-1 or 2 blood levels: acute coronary syndrome (unstable angina, acute myocardial infarction), severe sepsis, decompensated cirrhosis, pregnancy, chronic inflammatory bowel disease (Crohn's or ulcerative colitis), colitis or radiation rectitis.
Endoscopic polypectomy without prior histological confirmation.
Emergency (occlusion or peritonitis)
Minor patients.
Trial population
Patients followed up for colonoscopy in the gastroenterology and digestive surgery departments of 5 regional hospitals in northern France
Trial design
Case-control
Prospective
Treatments tested in this trial
Not listed
Trial groups
Trial outcomes
Primary outcomes
Area under the ROC curve (AUC) of the TFPI-1 biomarker
the AUC of the TFPI-1 biomarker to separate the 2 groups (CRC+ and control, i.e., asymptomatic population between 50 and 75 years with normal colonoscopy).
Secondary outcomes
AUC of the TFPI-2 biomarker to separate the 2 groups (CRC+ and control).
AUC of the discriminant score constructed by logistic regression with the 2 blood biomarkers as explanatory variables and the group type (CRC+ and control) as the variable to be explained.
Extension of c-index to the 3-group case proposed by Van Calster B et al.
Sponsors and contacts
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University Hospital, Lille
Lead sponsor
Ministry of Health, France
Collaborator