Welcome to


With a shared research interest in circulating tumor DNA (ctDNA) and its possibilities for improving cancer treatment and life for cancer patients, we have created this national research collaboration. All cancer types are in focus, and we have projects with more than fifteen different cancer types. All projects are national and aim to enable recruitment of patients from all corners of Denmark.

The ctDNA center is part of DCCC Danish Comprehensive Cancer Center and supported by the Danish Cancer Society.


What we do


Evidence based research in ctDNA through national collaboration





The center has a twofold purpose: firstly, to establish a foundation for national collaboration, knowledge sharing, and community-building among researchers engaged in ctDNA guided cancer treatment research in Denmark. Secondly, it actively promotes and facilitates ctDNA research, clinical trials, activities, and the translation of ctDNA guided decision making into clinical practice.

Our work extends to ensuring that the clinical benefits of ctDNA guided clinical decision-making are available through clinical trials to all Danish cancer patients. This includes breaking down geographical barriers, making the clinical trials available irrespective of the patients' location in the country and what cancer type they are dealing with.

  • National collaboration
  • Knowledge sharing
  • Breaking down barriers

  • Clinical trials
  • Seed money
  • Multidisciplinary approach

Join our events

Current activities




Results from the QA detection trial


Hear about the results from the QA trial with focus on ctDNA detection with the center's reference material.

Journal Club

Online meeting

Every month we invite you to an online Journal Club with presentation and discussion of a ctDNA article!

PhD course: Digital PCR

PhD course

We are delighted to host the PhD course 'Digital PCR methods for circulating tumor DNA analyses - Theory and Practice' 2024

Pneumatic Tube System and ctDNA


Learn whether the transport of whole blood samples in pneumatic tube systems affects the quality of cfDNA/ctNDA.


What is ctDNA?



Circulating tumor DNA (ctDNA)





Circulating tumor DNA, ctDNA, is fragments of DNA shed from cancer cells to the blood stream. Tumor DNA fragments are continually shed during tumor development and growth. The circulating tumor DNA fragments have a short lifetime of only a few hours. Accordingly, the tumor DNA found in a blood sample is a representation of the tumor as it looks at the time of the blood draw. Furthermore, if ctDNA can be detected in the blood, it is a very good real-time indicator of the presence and quantity of cancer cells in the body. The method has been proven to detect cancer earlier than standard-of-care cancer surveillance tools.

However, it should be emphasized that these results are still research results and thus, not standard procedures implemented in Danish cancer clinics. The purpose of the ctDNA Center is to facilitate generation of the evidence needed to motivate implementation of ctDNA guided decision making into standard clinical practice.






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Our research





The research in the center

The ctDNA Center is a platform for researchers to collaborate to conduct the studies needed to document the clinical and societal benefits of that investigate ctDNA guided cancer treatment in Denmark - and the center offers seed-funding for national clinical trials.

ctDNA guided decision making has the potential to be used throughout the different stages in the course of the cancer from first symptoms to the terminal disease state. We have divided the possible course of cancer into 5 Clinical Focus Areas (CFAs). Furthermore, to help researchers and clinicians start-up ctDNA research projects we have established five National Infrastructures (NI): Each of them address and aim to reduce a specific barrier for establishment of investigator initiated ctDNA projects. Through the NIs it is possible to get support in overcoming some of the challenges associated with initiating ctDNA research projects.

The trials will make it possible to guide the cancer treatment to fit the individual patient and thus, reduce the risk of overtreatment and side effects



Clinical Focus Areas (CFA)

National Infrastructures (NI)

Join the center





Want to be a part of the center?

If you are conducting research on the potential applications of ctDNA guided cancer treatment at a Danish hospital or researcj institution, we invite you to become a part of the ctDNA Center network. Membership in our network is entirely free of charge.



Science Center Skejby, MOMA
Brendstrupgårdsvej 21, build. A
8200 Aarhus N