Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Blood test for early detection of colorectal cancer

Official title: Smart Measurement of Circulating Tumor DNA: a Tumor-agnostic Computational Tool to Improve Colorectal Cancer Care

Run by Erasmus Medical Center · NCT06989814 · Data updated 2026-11-12

This study is testing a new blood test to see if it can find colorectal cancer early in people with Lynch Syndrome, who are at higher risk for this disease.

More Colorectal Neoplasms trials

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment50 (estimated)
SponsorErasmus Medical Center
Academic / other
Locations2 sites (Leiden, South Holland and 1 other locations)
StatusRecruiting
StartedMay 16, 2025
Main results expectedOctober 1, 2026
Study endsFebruary 1, 2027
Registry record updatedAugust 11, 2025
Trial IDNCT06989814 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults aged 18 and older who are confirmed Lynch Syndrome carriers or have a microsatellite instability high tumor and have not yet received treatment for their cancer.

Probably not a fit

Patients who are under 18, unwilling to undergo blood sampling, or have already received treatment for their tumors will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to develop a blood test that can detect colorectal cancer at early stages, particularly in individuals with Lynch Syndrome, who are at higher risk for developing this type of cancer. Participants will provide an additional blood sample that will be analyzed for circulating tumor DNA (ctDNA) to identify molecular characteristics indicative of newly arising tumors. The study seeks to optimize the detection of ctDNA without prior tumor information, addressing the limitations of current surveillance methods. By improving early detection, the study hopes to enhance cancer prevention strategies for at-risk populations.

Why it matters

Potential benefit: If successful, this blood test could significantly improve early detection and prevention of colorectal cancer in high-risk individuals.

How similar studies have gone: Other studies have shown promise in using ctDNA for cancer detection, but this approach is novel in the context of Lynch Syndrome and colorectal cancer.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

(suspect) Lynch Syndrome carriers who:

* Have proven Lynch Syndrome (MMR-gene or EPCAM mutation), or have a proven microsatellite instability high (MSI-H)tumor;
* Are at least 18 years old; Have been diagnosed with any form of cancer at the time of inclusion, but have had no treatment yet;
* Have granted informed consent to participate in this study.

Exclusion Criteria:

(suspect) Lynch Syndrome carriers who:

* Are unwilling to undergo extra blood sampling;
* Are under the age of 18;
* Have no newly diagnosed tumors at time of inclusion;
* Have been treated for their tumor at time of inclusion;
* Are not able to read or understand Dutch language or are mentally not capable.

Where it's running

  • Erasmus MC
    Rotterdam, South Holland, Netherlands
    Recruiting
  • Leiden University Medical Center
    Leiden, South Holland, Netherlands
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.