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 cancer and early systemic disease in gastro-intestinal cancers. Currently, his work focuses on CTCs and to establish workflows to analyze these rare cells comprehensively at single cell level. Prior to joining the HHU, Nikolas Stoecklein obtained post-doctoral training at the Institute of Immunology of the Ludwig-Maximilians-University Munich, Germany, in the group of Christoph Klein. He studied medicine at the University of Hamburg, Germany and the University of California Davies, Sacramento, USA (10/1991-5/1998).