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Danish Breast Cancer Cooperative Group

Authors Christiansen P, Ejlertsen B, Jensen MB, Mouridsen H

Received 24 November 2015

Accepted for publication 6 February 2016

Published 25 October 2016 Volume 2016:8 Pages 445—449

DOI https://doi.org/10.2147/CLEP.S99457

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Colin Mak

Peer reviewer comments 2

Editor who approved publication: Professor Henrik Toft Sørensen


Peer Christiansen,1 Bent Ejlertsen,2,3 Maj-Britt Jensen,3 Henning Mouridsen3

1Department of Surgery P, Breast Surgery Unit, Aarhus University Hospital/Randers Regional Hospital, Aarhus C, 2Department of Oncology, Rigshospitalet, Copenhagen University Hospital, 3DBCG-secretariat, Department 2501, Rigshospitalet, Copenhagen Ø, Denmark


Aim of database: Danish Breast Cancer Cooperative Group (DBCG), with an associated database, was introduced as a nationwide multidisciplinary group in 1977 with the ultimate aim to improve the prognosis in breast cancer. Since then, the database has registered women diagnosed with primary invasive nonmetastatic breast cancer. The data reported from the departments to the database included details of the characteristics of the primary tumor, of surgery, radiotherapy, and systemic therapies, and of follow-up reported on specific forms from the departments in question.
Descriptive data: From 1977 through 2014, ~110,000 patients are registered in the nationwide, clinical database. The completeness has gradually improved to more than 95%. DBCG has continuously prepared evidence-based guidelines on diagnosis and treatment of breast cancer and conducted quality control studies to ascertain the degree of adherence to the guidelines in the different departments.
Conclusion: Utilizing data from the DBCG database, a long array of high-quality DBCG studies of various designs and scope, nationwide or in international collaboration, have contributed to the current updating of the guidelines, and have been an instrumental resource in the improvement of management and prognosis of breast cancer in Denmark. Thus, since the establishment of DBCG, the prognosis in breast cancer has continuously improved with a decrease in 5-year mortality from ~37% to 15%.

Keywords: breast cancer, database, guidelines, quality control, research

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