The LEO study is a large-scale scientific study conducted together with the Interdisciplinary Endoscopy Center Heidelberg (IEZ) of the Medical Clinic of Heidelberg University Hospital. The main aim of the study is to discover and evaluate new screening tests that can detect colorectal cancer and its precursors earlier, especially in young adults in the 30-49 age group. In addition, the frequency of the disease and the question of how to best identify high-risk groups in which precursors are already present is to be investigated. We want to derive recommendations for a personalized age for starting colorectal cancer screening. 

The recruitment phase was completed in April 2024.

Contact Details

Division of Primary Cancer Prevention (formerly Preventive Oncology)
National Center for Tumor Diseases (NCT) Heidelberg
Im Neuenheimer Feld 460
69120 Heidelberg
Phone: 06221-56-34322
leo(at)nct-heidelberg.de

Study Management
National Center for Tumor Diseases (NCT) Heidelberg
and German Cancer Research Center (DKFZ)
Prof. Dr. Hermann Brenner
Im Neuenheimer Feld 460
69120 Heidelberg
www.nct-heidelberg.de

Clinical Management
University Hospital Heidelberg
Interdisciplinary Endoscopy Center
Prof. Dr. Peter Sauer, senior physician Dr. Anja Schaible, MSc
Im Neuenheimer Feld 410
69120 Heidelberg
www.iez-heidelberg.de

Data Protection
German Cancer Research Center (DKFZ)
Data Protection Officer
Im Neuenheimer Feld 280
69120 Heidelberg
Phone: 06221-42-0
E-mail: datenschutz(at)dkfz-heidelberg.de

Heidelberg University Hospital
Data Protection Officer
Im Neuenheimer Feld 672
69120 Heidelberg
Phone: 06221-56-7036
E-mail: Datenschutz(at)med.uni-heidelberg.de

Data protection supervisory authority
State Data Protection and Freedom-of-Information Officer in Baden-Württemberg
P.O. Box 10 29 32, 70025 Stuttgart
Phone: 0711- 61 55 41-716, Fax: 0711-61 55 41-15
E-mail: Poststelle(at)lfdi.bwl.de
https://www.baden-wuerttemberg.datenschutz.de