Blood test hunts hidden cancer after surgery

NCT ID NCT04813627

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked for leftover cancer DNA in the blood of over 2,000 people who had surgery for stage II or III colorectal cancer. Participants did not receive any new treatment—they just gave blood samples over about 21 months. The goal was to find patients who might be eligible for a future vaccine study.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

colorectal cancer colorectal carcinoma colorectal neoplasm

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • AZ Groeninge

    Kortrijk, 8500, Belgium

  • Agaplesion Markus Krankenhaus

    Frankfurt am Main, 60431, Germany

  • Algemeen Ziekenhuis (AZ) Glorieux

    Ronse, 9600, Belgium

  • Algemeen Ziekenhuis Sint-Lucas

    Bruges, 8310, Belgium

  • Asklepios Klinik Altona

    Hamburg, 22763, Germany

  • Asklepios Klinik St. Georg

    Hamburg, 20099, Germany

  • Asklepios Klinik Weissenfels

    Weißenfels, 06667, Germany

  • Asklepios Kliniken Nord

    Hamburg, 22417, Germany

  • Asklepios MVZ Elmshorn

    Elmshorn, 25335, Germany

  • Cancer Care Specialists Of Central Illinois Sc (Ccsci) - Cancer Care Center Of Decatur

    Decatur, Illinois, 62526, United States

  • Cancer Center Donauwoerth and Dachau

    Donauwörth, 86609, Germany

  • Centre Hospitalier Regional, CHR

    Verviers, 4800, Belgium

  • Centres Hospitaliers Jolimont

    La Louvière, 7100, Belgium

  • Centro Oncologico Galicia

    A Coruña, 15009, Spain

  • Centrum fuer Haematologie und Onkologie Bethanien

    Frankfurt am Main, 60389, Germany

  • Charité Campus Mitte (CCM) - Universitätsmedizin Berlin

    Berlin, 10117, Germany

  • Clinique Saint-Pierre d'ottignies (CSPO)

    Ottignies, 1340, Belgium

  • Clinique et Maternite Sainte-Elisabeth (CMSE)

    Namur, 5000, Belgium

  • Complejo Hospitalario Universitario A Coruna

    A Coruña, 15006, Spain

  • Complejo Hospitalario Universitario De Santiago De Compostela

    Santiago de Compostela, 15706, Spain

  • Complejo Hospitalario de Navarra

    Pamplona, 31008, Spain

  • Complejo Hospitalario de Orense

    Ourense, 32005, Spain

  • Corporacio Sanitaria Universitaria Parc Tauli

    Sabadell, 08208, Spain

  • Forschungszentrum Ruhr

    Witten, 58455, Germany

  • Gemeinschaftspraxis Dr. med. B. Heinrich, Prof. M. Bangerter MD

    Augsburg, 86150, Germany

  • Haematologisch-Onkologische Praxis Eppendorf HOPE

    Hamburg, 20249, Germany

  • Helios Dr. Horst Schmidt Kliniken (HSK)

    Wiesbaden, 65199, Germany

  • Hospital De Sant Joan Despi Moises Broggi

    Barcelona, 08970, Spain

  • Hospital General De Granollers

    Granollers, 08402, Spain

  • Hospital Sant Joan de Deu-Fundacio Althaia

    Manresa, 08243, Spain

  • Hospital Universitari Germans Trias - ICO Badalona

    Badalona, 08916, Spain

  • Hospital Universitari Sant Joan de Reus

    Reus, 43204, Spain

  • Hospital Universitari Vall d'Hebron

    Barcelona, 08035, Spain

  • Hospital Universitario Miguel Servet

    Zaragoza, 50009, Spain

  • Hospital Universitario Mutua de Terrassa

    Terrassa, 08222, Spain

  • Hospital de la Santa Creu i Sant Pau

    Barcelona, 08041, Spain

  • IOR- Instituto Quiron Dexeus

    Barcelona, 08028, Spain

  • Imelda Ziekenhuis

    Bonheiden, 2820, Belgium

  • Internistische Schwerpunktpraxis Hamatologie und Onkologie

    Mainz, 55122, Germany

  • John Muir Clinical Research Center

    Concord, California, 94520, United States

  • Klinikum der Johann Wolfgang Goethe-Universitaet Frankfurt

    Frankfurt am Main, 60590, Germany

  • Klinikum der Universität München, Medizinische Klinik und Poliklinik III

    München, 81377, Germany

  • Krankenhaus Nordwest GmbH - Institut Fuer Klinisch-Onkologische Forschung

    Frankfurt am Main, 60488, Germany

  • Marin Cancer Care

    Greenbrae, California, 94904, United States

  • Medizinische Hochschule Hannover

    Hanover, 30625, Germany

  • Medizinische Klinik III, Universitätsklinikum Bonn

    Bonn, 53127, Germany

  • Northwest Cancer Specialists

    Vancouver, Washington, 98684, United States

  • Oncology Hematology Care Clinical Trials, LLC

    Cincinnati, Ohio, 45245, United States

  • Orchard Healthcare Research Inc.

    Skokie, Illinois, 60077, United States

  • Prosper Hospital

    Recklinghausen, 45659, Germany

  • Ridley-Tree Cancer Center

    California City, California, 93105, United States

  • Rockwood Cancer Treatment Center

    Spokane, Washington, 99204, United States

  • Rocky Mountain Cancer Centers - Denver Midtown

    Denver, Colorado, 80218, United States

  • SLK-Kliniken Heilbronn GmbH

    Heilbronn, 74078, Germany

  • St. Johannes Hospital

    Dortmund, 44137, Germany

  • Staedtisches Klinikum Muenchen GmbH, Klinikum Neuperlach

    München, 81737, Germany

  • Staedtisches Krankenhaus Kiel gGmbH

    Kiel, 24116, Germany

  • Studiengesellschaft BSF

    Halle, 06108, Germany

  • Texas Oncology - Austin

    Austin, Texas, 78705, United States

  • Texas Oncology - Baylor Charles A. Sammons Cancer Center

    Dallas, Texas, 75246, United States

  • Texas Oncology - Northeast Texas

    Tyler, Texas, 75702, United States

  • Texas Oncology - San Antonio Medical Center

    San Antonio, Texas, 78229, United States

  • The Oncology Institute of Hope

    Los Angeles, California, 90033, United States

  • USOR - New York Oncology Hematology, P.C.

    Albany, New York, 12206, United States

  • USOR - Willamette Valley Cancer Institute and Research Center

    Eugene, Oregon, 97401, United States

  • Universitaetsklinikum St. Josef-Hospital Bochum

    Bochum, 44791, Germany

  • Universitaetsklinikum Ulm

    Ulm, 89081, Germany

  • Universitaetsmedizin Rostock

    Rostock, 18057, Germany

  • Universitair Ziekenhuis Brussel (UZ-VUB - Academisch Ziekenhuis)

    Jette, 1090, Belgium

  • Universitaire Ziekenhuizen Leuven - Campus Gasthuisberg

    Leuven, 3000, Belgium

  • VZW Algemeen Ziekenhuis KLINA

    Brasschaat, 2930, Belgium

  • Virginia Cancer Specialists, PC

    Fairfax, Virginia, 22031, United States

  • ZNA Campus Middelheim

    Antwerp, 2020, Belgium

  • Ze:ro Arztpraxen

    Mannheim, 68165, Germany