Ahmed N. Hegazy is a clinician-scientist and a group leader at the Department of Gastroenterology, Infectious Diseases and Rheumatology, Charité – Universitätsmedizin Berlin and German Rheumatism Research Center-Berlin. He studied medicine at Cairo University, Egypt and Hannover Medical School, Germany. He received his medical degree and did his M.D. thesis in the laboratory of Prof. Christoph Klein at Hannover Medical School, where he studied the role of CD4 T cells in antitumor immunity. He then obtained his Ph.D. in Immunology and Infection Biology from the Humboldt University of Berlin after working with Prof. Andreas Radbruch and Prof. Max Loehning at the German Rheumatism Research Center-Berlin. During his Ph.D., he spent two years at the laboratory of Prof. Hans Hengartner and Rolf Zinkernagel at the University of Zurich and ETH-Zurich, Switzerland. In his PhD, he investigated the T cell plasticity in viral infections. Ahmed then performed his postdoctoral training in the laboratory of Prof. Fiona Powrie at the University of Oxford. Ahmed was an EMBO postdoctoral fellow and a Marie Skłodowska-Curie Research Fellow and was awarded the Robert Koch Prize in Immunology in 2017. Since relocating to Berlin, his group is investigating the role of cytokines in immune-epithelial interactions. Furthermore, they aim to identify new biomarkers to predict therapy response to different biological treatments in IBD.