The workshop will be organised locally by the Medical Physics Unit and the ASUIT Medical Education Service, in collaboration with the scientific committee that has been overseeing this initiative for several years. It will focus on the most advanced techniques used in the treatment of moving targets (tumours in the thoracic and abdominal regions) in proton therapy (in the context of treatment planning, monitoring and delivery) and will be attended by expert medical physicists, radiotherapy specialists and researchers from most European proton therapy centres. The workshop will alternate between plenary sessions, during which the latest advances in 4D proton therapy treatments will be presented, and group work sessions, in which the various professionals will discuss future developments in the field.