Anke Fuchs, Mateusz Gliwiński, Nathali Grageda, Rachel Spiering, Abul K. Abbas, Silke Appel, Rosa Bacchetta, Manuela Battaglia, David Berglund, Bruce Blazar, Jeffrey A. Bluestone, Martin Bornhäuser, Anja ten Brinke, Todd M. Brusko, Nathalie Cools, Maria Cristina Cuturi, Edward Geissler, Nick Giannoukakis, Karolina Gołab, David A. Hafler, S. Marieke van Ham, Joanna Hester, Keli Hippen, Mauro Di Ianni, Natasa Ilic, John Isaacs, Fadi Issa, Dorota Iwaszkiewicz-Grześ, Elmar Jaeckel, Irma Joosten, David Klatzmann, Hans Koenen, Cees van Kooten, Olle Korsgren, Karsten Kretschmer, Megan Levings, Natalia Maria Marek-Trzonkowska, Marc Martinez-Llordella, Djordje Miljkovic, Kingston H.G. Mills, Joana P. Miranda, Ciriaco A. Piccirillo, Amy L. Putnam, Thomas Ritter, Maria Grazia Roncarolo, Shimon Sakaguchi, Silvia Sánchez-Ramón, Birgit Sawitzki, Ljiljana Sofronic-Milosavljevic, Megan Sykes, Qizhi Tang, Marta Vives-Pi, Herman Waldmann, Piotr Witkowski, Kathryn J. Wood, Silvia Gregori, Catharien M. U. Hilkens, Giovanna Lombardi, Phillip Lord, Eva M. Martinez-Caceres, Piotr Trzonkowski, CRTD-DFG Research Center for Regenerative Therapies Dresden [Dresden, Germany] (Medical Faculty), Technische Universität Dresden = Dresden University of Technology (TU Dresden), Medical University of Gdańsk, King‘s College London, Newcastle University [Newcastle], University of California [San Francisco] (UCSF), University of California, University of Bergen (UiB), Stanford School of Medicine [Stanford], Stanford Medicine, Stanford University-Stanford University, IRCCS Ospedale San Raffaele [Milan, Italy], Uppsala University, University of Minnesota [Twin Cities] (UMN), University of Minnesota System, University of Amsterdam [Amsterdam] (UvA), University of Florida [Gainesville] (UF), University of Antwerp (UA), Antwerp University Hospital [Edegem] (UZA), Dendritic cells and immunoregulation in transplantation and immunopathology (Team 1 - U1064 Inserm - CRTI), Centre de Recherche en Transplantation et Immunologie (U1064 Inserm - CRTI), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN), University Hospital Regensburg, Carnegie Mellon University [Pittsburgh] (CMU), University of Chicago, Yale University School of Medicine, University of Oxford [Oxford], University of Chieti-Pescara, University of Belgrade [Belgrade], NHS Foundation Trust [London], The Royal Marsden, Medical School of Hannover (MHH), Radboud University Medical Center [Nijmegen], Immunologie - Immunopathologie - Immunothérapie [CHU Pitié Salpêtrière] (I3), CHU Charles Foix [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Leiden University Medical Center (LUMC), Uppsala University Hospital, University of Gothenburg (GU), Helmholtz-Zentrum München (HZM), BC Children's Hospital Research Institute [Vancouver, BC, Canada] (BCCHR), University of British Columbia (UBC), Trinity College Dublin, Universidade de Lisboa (ULISBOA), McGill University = Université McGill [Montréal, Canada], National University of Ireland [Galway] (NUI Galway), Stanford University School of Medicine [CA, USA], Osaka University [Osaka], Department of Clinical Immunology, Hospital Clínico San Carlos, Universidad Complutense de Madrid = Complutense University of Madrid [Madrid] (UCM), Charité - UniversitätsMedizin = Charité - University Hospital [Berlin], Columbia University [New York], Institut d’Investigació Germans Trias i Pujol = Germans Trias i Pujol Research Institute (IGTP), The University of Chicago Medicine [Chicago], Universitat Autònoma de Barcelona (UAB), This work was supported by a grant from the European Cooperation in Science and Technology (COST) for the AFACTT project (Action to Focus and Accelerate Cell-based Tolerance-inducing Therapies, BM1305). COST is part of the EU Framework Programme Horizon 2020., European Project: COST, EU Horizon 2020, University of California [San Francisco] (UC San Francisco), University of California (UC), Yale School of Medicine [New Haven, Connecticut] (YSM), University of Oxford, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), Helmholtz Zentrum München = German Research Center for Environmental Health, Universidade de Lisboa = University of Lisbon (ULISBOA), Le Bihan, Sylvie, European Cooperation in Science and Technology - COST - INCOMING, Universiteit Leiden, AII - Inflammatory diseases, AII - Infectious diseases, and Landsteiner Laboratory