Hans, esteemed former president of the Karolinska Institute and professor of Immunology, has an illustrious international career marked by significant roles. Notably, he served as the Director General of the Swedish National Bacteriological Laboratory and Chairman of the Nobel Prize committee in physiology or medicine. Currently, he holds the position of chairman for the listed RaySearch, and as board member and scientific advisor for Sarepta Therapeutics, US. Over the years, Hans has been recognized with numerous chairmanships, international prizes, directorships, and several honorary doctorate degrees. His vast global contributions to the field are well-respected and commendable.