Prof. Passweg is Chair of the Hematology Division at the Basel University Hospital, and Professor of Hematology at the Basel University.

His many activities include the following: • Swiss Cancer League ,Vice president, 2007-10; President, 2010-17 • European Hematology Association: Fellowship and Grants Review Committee 2010 • Ad hoc Scientific Committee Bone Marrow Failure, ASH, Member, 2011 • National Institute Cancer Epidemiology and Research Foundation Council (NICER), Member 2010-2018; President 2018-> • Steering Committee, Basel Stem Cell Network, 2011-> • Swissbridge Foundation Council 2011-13, President 2013-> • Swiss Society of Hematology, Board 2006 ->; Treasurer 2012-14; Secretary 2014-16; President 2016-18 • President Oncosuisse 2017 - 2022 • CIBMTR (Center for International Blood and Marrow Transplant Research) Advisory