Blood test may spare 85% of early colon cancer patients from unnecessary surgery

NCT ID NCT06040632

First seen Apr 30, 2026 · Last updated May 15, 2026 · Updated 7 times

Summary

This study looks at 67 people in Denmark who had early-stage colorectal cancer removed during a colonoscopy or minor surgery. Doctors often recommend more surgery because of certain risk factors, but only about 15% of patients actually have leftover cancer. The researchers are testing a blood test that looks for tumor DNA (ctDNA) to see if it can accurately identify who truly needs additional surgery. If the test works, many patients could avoid unnecessary operations.

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Contacts and locations

Locations

  • Aalborg University Hospital

    Aalborg, North Denmark, 9000, Denmark

  • Aarhus University Hospital

    Aarhus, Central Jutland, 8000, Denmark

  • Bispebjerg Hospital

    Copenhagen, Capital Region of Denmark, 2400, Denmark

  • Gødstrup Hospital

    Herning, Central Jutland, 7400, Denmark

  • Herlev Hospital

    Herlev, Capital Region of Denmark, 2730, Denmark

  • Odense University Hospital

    Odense, The Region of Southern Denmark, 5000, Denmark

  • Regional Hospital Horsens

    Horsens, Central Jutland, 8700, Denmark

  • Regional Hospital Randers

    Randers, Central Jutland, 8930, Denmark

  • Regional Hospital Viborg

    Viborg, Central Jutland, 8800, Denmark

Conditions

Explore the condition pages connected to this study.