1 1 Karolinska University Hospital, Stockholm, Sweden. 2 Karolinska Institutet, Stockholm, Sweden. 3 Alberta Transplant Applied Genomics Centre, Edmonton, Canada. 4 Frankfurt University Hospital and Clinics, Frankfurt, Germany. 5 University of Heidelberg, Heidelberg, Germany. 6 Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Spain. 7 Red de Investigación Renal (REDinREN), Instituto Carlos III, Madrid, Spain. 8 Hospital Universitari de Bellvitge, University of Barcelona, Spain. 9 Service de Néphrologie-Transplantation, Hôpital Necker, Paris, France. 10 University Hospitals Leuven, Leuven, Belgium. 11 University Hospital of Saint-Etienne, Jean Monnet University, France. 12 Western Infirmary, Glasgow, United Kingdom. 13 Fundació Puigvert, Barcelona, Spain. 14 University of Uppsala, Uppsala, Sweden. 15 King's College Hospital, London, United Kingdom. 16 Baylor University Medical Center Dallas, Dallas, TX. 17 Transplantcenter, Institute for Clinical and Experimental Medicine (IKEM), Prague, Czech Republic. 18 Department of Medical and Biological Sciences, University Hospital of Udine, Udine, Italy. 19 Liver Unit, Queen Elizabeth Hospital, Birmingham, United Kingdom. 20 Directorate of Organ Donation and Transplantation, NHS Blood and Transplant, Bristol, United Kingdom. 21 Department of Pathology, University of Pittsburgh, Pittsburgh, PA. 22 Experimental Surgery, University Hospital Regensburg, University of Regensburg, Regensburg, Germany. 23 Ahead of Time GmbH, Starnberg, Germany. 24 Better Value Healthcare, Oxford, United Kingdom.