Blood test could spare colon cancer patients from unnecessary chemo
NCT ID NCT06111105
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether a simple blood test can find tiny bits of cancer DNA left after surgery for stage III colorectal cancer. The goal is to see if this test can help doctors decide who really needs extra chemotherapy and who can skip it. About 590 people will give blood samples at different times to compare different test methods. The study does not offer a new treatment but aims to improve how we personalize cancer care.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 590 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2023
- Expected to finish
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Jul 2031
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Colorectal cancer stage III: patient with stage III colorectal cancer treated with curative-intent surgery and adjuvant chemotherapy Colorectal cancer liver metastasis: patient with colorectal cancer liver metastasis
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Colorectal cancer stage III Inclusion Criteria: * Colorectal cancer, UICC stage III * Has received curative-intent resection and is a candidate for adjuvant chemotherapy * Patient able to understand and sign written informed consent Exclusion Criteria: * Hereditary colorectal cancer linked to familial colonic polyposis or Lynch syndrome * Inflammatory bowel disease (Crohn's disease or ulcerative colitis) * Verified distant metastases * Not treated with adjuvant chemotherapy despite indication (incomplete treatment not included) * Treated with neoadjuvant chemo-radiation therapy * No tissue sample available for the project, or tumor content in the tissue sample is \<20% * Synchronous colorectal and non-colorectal cancer diagnosed per operative (except skin cancer other than melanoma) * Other cancers (excluding colorectal cancer or skin cancer other than melanoma) within 3 years from eligibility screening * Patients who are unlikely to comply with the protocol (e.g. uncooperative attitude), inability to return for subsequent visits) and/or otherwise considered by the Investigator to be unlikely to complete the study Colorectal cancer liver metastasis Inclusion Criteria: * Colorectal cancer liver metastasis * Planned for curative-intent treatment * Performance status 0-1 Exclusion Criteria: * Liver cirrhosis * Extrahepatic metastases * Other cancer within the last 5 years * Intervention not performed with curative intent * No tissue available from CRLM or primary tumor
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
15 sites in 5 countries. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Aalborg University Hospital
RECRUITINGAalborg, North Denmark, 9000, Denmark
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Aarhus University Hospital
RECRUITINGAarhus, Central Jutland, 8000, Denmark
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Abteilung für Onkologie, Medizinische Universität Graz
RECRUITINGGraz, Styria, 8010, Austria
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Bispebjerg Hospital
RECRUITINGCopenhagen, Capital Region of Denmark, 2400, Denmark
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Department of General-, Visceral- and Thoracic Surgery, University Medical Center Hamburg-Eppendorf
RECRUITINGHamburg, Free and Hanseatic City of Hamburg, 20246, Germany
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Gødstrup Hospital
RECRUITINGHerning, Central Jutland, 7400, Denmark
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Herlev Hospital
NOT_YET_RECRUITINGHerlev, Capital Region of Denmark, 2730, Denmark
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Karolinska University Hospital
RECRUITINGHuddinge, Stockholm County, 14183, Sweden
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LCCRH (Laboratoire Cellules Circulantes Rares Humaines) - CHU de Montpellier
RECRUITINGMontpellier, 34295, France
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Odense University Hospital
RECRUITINGOdense, The Region of Southern Denmark, 5000, Denmark
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Ordenskrankenhaus Graz Mitte
RECRUITINGGraz, Styria, 8010, Austria
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Regional Hospital Horsens
RECRUITINGHorsens, Central Jutland, 8700, Denmark
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Regional Hospital Randers
RECRUITINGRanders, Central Jutland, 8930, Denmark
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Regional Hospital Viborg
RECRUITINGViborg, Central Jutland, 8800, Denmark
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Universitätsklinikum Hamburg-Eppendorf
RECRUITINGHamburg, Free and Hanseatic City of Hamburg, 20246, Germany
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can targeted liver chemo turn inoperable tumors into operable ones?
- DNA 'Crystal Ball' may spot return of colorectal cancer
- New PET scan tracer could sharpen detection of liver spread in colorectal cancer
- Glowing dye could help surgeons spot hidden cancer during colorectal surgery
- New blood test could spot colon cancer before it spreads
- Blood test hunts hidden cancer after surgery