A diagnostic tool using gut microbiome for colorectal cancer screening

A Gut Microbiome-based Diagnostic Tool for the Screening of Colorectal Cancer

Observational Catholic University of the Sacred Heart · NCT06738173

This study is testing a new way to screen for colorectal cancer using gut bacteria samples from people aged 50-74 who have already had a positive result on a stool test.

Quick facts

Study typeObservational
Enrollment1202 (estimated)
Ages50 Years to 74 Years
SexAll
SponsorCatholic University of the Sacred Heart Academic / other
Locations1 site (Rome, RM)
Trial IDNCT06738173 on ClinicalTrials.gov

What this trial studies

This observational study aims to develop a gut microbiome-based diagnostic tool to identify colorectal cancer (CRC) and advanced colorectal adenomas. It focuses on patients aged 50-74 who are participating in the national CRC screening program and have tested positive for fecal immunochemical testing (FIT). The study will analyze alterations in the gut microbiome and specific microbial signatures that may indicate the presence of CRC. By identifying non-invasive biomarkers, the study seeks to improve the diagnostic yield and reduce unnecessary colonoscopies.

Who should consider this trial

Good fit: Ideal candidates for this study are individuals aged 50-74 who are part of the national CRC screening program and have a positive FIT result.

Not a fit: Patients who are unfit for colonoscopy or have other oncological conditions or severe gastrointestinal diseases may not benefit from this study.

Why it matters

Potential benefit: If successful, this tool could enhance early detection of colorectal cancer, leading to better patient outcomes and reduced mortality.

How similar studies have performed: While microbiome-based biomarkers for CRC screening are being explored, this specific approach is novel and has not been extensively tested in clinical practice.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients participating in the national CRC screening program (50-74 years old)
* Positivity to the FIT;
* Ability to provide written informed consent and to be compliant with the study procedures.

Exclusion Criteria:

* Patients unfit for colonoscopy;
* Other oncological conditions;
* Concomitant severe comorbidities or gastrointestinal (GI) organic diseases (e.g. diverticular disease, inflammatory bowel disease);
* Antibiotics, proton pump inhibitors or probiotics within 4 weeks prior to enrollment.

Where this trial is running

Rome, RM

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Colorectal Cancermicrobiome testingmicrobiomecolorectal cancer screeningcolorectal cancer
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.