We proudly and cordially invite you to the upcoming „4th International Symposium on Childhood, Adolescent and Young Adult Hodgkin Lymphoma“ to be held 13-16 May, 2020 in Berlin, Germany. This important symposium has now almost become a tradition for scientists, clinicians, pharmacists, clinical trial staff, and all people who are involved in the science, diagnosis, and treatment of young people with Hodgkin lymphoma. We are putting together, in collaboration with our fantastic Scientific Committee, a high-quality program with renowned international speakers and experts in the field of Hodgkin lymphoma. We will have two and a half days dedicated to ten main Session Topics, who are now open for abstract submission. We will have interactive case discussions as an opener of most session topics. High-level poster presentations will have the opportunity to advertise their poster via poster pitches in the respective main sessions. One of the highlights will be the awarding of the Günther-Schellong-Price, which will be conferred for the third time. The Scientific Symposium will close with the Abstract Award Session. It is our utmost pleasure to serve again with a major symposium for this great global network for advancing the science and development of standards of care for children, adolescents and young adults with Hodgkin lymphoma. Thus, your attendance at the symposium, will contribute for this well-established network to continue, and you will have the chance to experience the spirit and the action that this great collaboration enables in providing long-lasting cures for all children, adolescents and young adults with Hodgkin lymphoma.