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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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.
Contacts and locations
Locations
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AZ Groeninge
Kortrijk, 8500, Belgium
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Agaplesion Markus Krankenhaus
Frankfurt am Main, 60431, Germany
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Algemeen Ziekenhuis (AZ) Glorieux
Ronse, 9600, Belgium
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Algemeen Ziekenhuis Sint-Lucas
Bruges, 8310, Belgium
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Asklepios Klinik Altona
Hamburg, 22763, Germany
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Asklepios Klinik St. Georg
Hamburg, 20099, Germany
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Asklepios Klinik Weissenfels
Weißenfels, 06667, Germany
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Asklepios Kliniken Nord
Hamburg, 22417, Germany
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Asklepios MVZ Elmshorn
Elmshorn, 25335, Germany
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Cancer Care Specialists Of Central Illinois Sc (Ccsci) - Cancer Care Center Of Decatur
Decatur, Illinois, 62526, United States
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Cancer Center Donauwoerth and Dachau
Donauwörth, 86609, Germany
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Centre Hospitalier Regional, CHR
Verviers, 4800, Belgium
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Centres Hospitaliers Jolimont
La Louvière, 7100, Belgium
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Centro Oncologico Galicia
A Coruña, 15009, Spain
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Centrum fuer Haematologie und Onkologie Bethanien
Frankfurt am Main, 60389, Germany
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Charité Campus Mitte (CCM) - Universitätsmedizin Berlin
Berlin, 10117, Germany
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Clinique Saint-Pierre d'ottignies (CSPO)
Ottignies, 1340, Belgium
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Clinique et Maternite Sainte-Elisabeth (CMSE)
Namur, 5000, Belgium
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Complejo Hospitalario Universitario A Coruna
A Coruña, 15006, Spain
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Complejo Hospitalario Universitario De Santiago De Compostela
Santiago de Compostela, 15706, Spain
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Complejo Hospitalario de Navarra
Pamplona, 31008, Spain
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Complejo Hospitalario de Orense
Ourense, 32005, Spain
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Corporacio Sanitaria Universitaria Parc Tauli
Sabadell, 08208, Spain
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Forschungszentrum Ruhr
Witten, 58455, Germany
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Gemeinschaftspraxis Dr. med. B. Heinrich, Prof. M. Bangerter MD
Augsburg, 86150, Germany
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Haematologisch-Onkologische Praxis Eppendorf HOPE
Hamburg, 20249, Germany
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Helios Dr. Horst Schmidt Kliniken (HSK)
Wiesbaden, 65199, Germany
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Hospital De Sant Joan Despi Moises Broggi
Barcelona, 08970, Spain
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Hospital General De Granollers
Granollers, 08402, Spain
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Hospital Sant Joan de Deu-Fundacio Althaia
Manresa, 08243, Spain
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Hospital Universitari Germans Trias - ICO Badalona
Badalona, 08916, Spain
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Hospital Universitari Sant Joan de Reus
Reus, 43204, Spain
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Hospital Universitari Vall d'Hebron
Barcelona, 08035, Spain
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Hospital Universitario Miguel Servet
Zaragoza, 50009, Spain
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Hospital Universitario Mutua de Terrassa
Terrassa, 08222, Spain
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Hospital de la Santa Creu i Sant Pau
Barcelona, 08041, Spain
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IOR- Instituto Quiron Dexeus
Barcelona, 08028, Spain
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Imelda Ziekenhuis
Bonheiden, 2820, Belgium
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Internistische Schwerpunktpraxis Hamatologie und Onkologie
Mainz, 55122, Germany
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John Muir Clinical Research Center
Concord, California, 94520, United States
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Klinikum der Johann Wolfgang Goethe-Universitaet Frankfurt
Frankfurt am Main, 60590, Germany
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Klinikum der Universität München, Medizinische Klinik und Poliklinik III
München, 81377, Germany
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Krankenhaus Nordwest GmbH - Institut Fuer Klinisch-Onkologische Forschung
Frankfurt am Main, 60488, Germany
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Marin Cancer Care
Greenbrae, California, 94904, United States
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Medizinische Hochschule Hannover
Hanover, 30625, Germany
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Medizinische Klinik III, Universitätsklinikum Bonn
Bonn, 53127, Germany
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Northwest Cancer Specialists
Vancouver, Washington, 98684, United States
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Oncology Hematology Care Clinical Trials, LLC
Cincinnati, Ohio, 45245, United States
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Orchard Healthcare Research Inc.
Skokie, Illinois, 60077, United States
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Prosper Hospital
Recklinghausen, 45659, Germany
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Ridley-Tree Cancer Center
California City, California, 93105, United States
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Rockwood Cancer Treatment Center
Spokane, Washington, 99204, United States
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Rocky Mountain Cancer Centers - Denver Midtown
Denver, Colorado, 80218, United States
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SLK-Kliniken Heilbronn GmbH
Heilbronn, 74078, Germany
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St. Johannes Hospital
Dortmund, 44137, Germany
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Staedtisches Klinikum Muenchen GmbH, Klinikum Neuperlach
München, 81737, Germany
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Staedtisches Krankenhaus Kiel gGmbH
Kiel, 24116, Germany
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Studiengesellschaft BSF
Halle, 06108, Germany
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Texas Oncology - Austin
Austin, Texas, 78705, United States
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Texas Oncology - Baylor Charles A. Sammons Cancer Center
Dallas, Texas, 75246, United States
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Texas Oncology - Northeast Texas
Tyler, Texas, 75702, United States
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Texas Oncology - San Antonio Medical Center
San Antonio, Texas, 78229, United States
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The Oncology Institute of Hope
Los Angeles, California, 90033, United States
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USOR - New York Oncology Hematology, P.C.
Albany, New York, 12206, United States
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USOR - Willamette Valley Cancer Institute and Research Center
Eugene, Oregon, 97401, United States
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Universitaetsklinikum St. Josef-Hospital Bochum
Bochum, 44791, Germany
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Universitaetsklinikum Ulm
Ulm, 89081, Germany
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Universitaetsmedizin Rostock
Rostock, 18057, Germany
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Universitair Ziekenhuis Brussel (UZ-VUB - Academisch Ziekenhuis)
Jette, 1090, Belgium
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Universitaire Ziekenhuizen Leuven - Campus Gasthuisberg
Leuven, 3000, Belgium
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VZW Algemeen Ziekenhuis KLINA
Brasschaat, 2930, Belgium
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Virginia Cancer Specialists, PC
Fairfax, Virginia, 22031, United States
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ZNA Campus Middelheim
Antwerp, 2020, Belgium
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Ze:ro Arztpraxen
Mannheim, 68165, Germany
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- DNA 'Crystal Ball' may spot return of colorectal cancer
- Glowing dye could help surgeons spot hidden cancer during colorectal surgery
- New blood test could spot colon cancer before it spreads
- Acupuncture needles aim to zap cancer brain fog
- Blood test could spare colon cancer patients from unnecessary chemo
- New immunotherapy combo aims to wipe out hidden colorectal cancer cells