Blood test for early detection of colorectal cancer

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

Not applicable Interventional Erasmus Medical Center · NCT06989814

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.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment50 (estimated)
Ages18 Years and up
SexAll
SponsorErasmus Medical Center Academic / other
Locations2 sites (Leiden, South Holland and 1 other locations)
Trial IDNCT06989814 on ClinicalTrials.gov

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.

Who should consider this trial

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.

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.

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 performed: 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.

Eligibility criteria

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 this trial is running

Leiden, South Holland and 1 other locations

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 NeoplasmsColorectal Neoplasms MalignantColorectal Neoplasms, Hereditary NonpolyposisHereditary Nonpolyposis Colon CancerLiquid BiopsyColorectal cancerEarly detectionPrevention
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.