Nikolas Stoecklein is currently a Professor for Experimental Surgical Oncology at the Heinrich-Heine University Düsseldorf (HHU), Germany. His major research interests are minimal residual disease and early systemic disease in cancer. A current focus of his group is to improve CTC-based liquid biopsies. He pioneered Diagnostic Leukapheresis (DLA) for enhanced CTC detection and established workflows to parse CTCs comprehensively at the single cell level to get deeper insights into the biology of systemic progression and therapeutic resistance. Prior joining the HHU, Nikolas obtained post-doctoral training at the Institute of Immunology of the Ludwig- Maximilians-University Munich, Germany, in the group of Christoph Klein. He graduated from the University of Hamburg, Germany, in 1998 where he studied medicine.