Antonio M Risitano, MD, PhD^1,2, Dirk-Jan Eikema Sr.^3*, Joe Tuffnell^4*, Brian Piepenbroek^5*, Victoria Potter^6*, Flore Sicre De Fontbrune^7,8*, Malek Benakli, MD^9*, Krzysztof Kalwak Sr.^10*, Elena Skorobogatova Sr.^11*, Alexey Maschan, MD, DSc^12*, Alexander Kulagin, MD, PhD^13*, Jean-Hugues Dalle, MD, PHD¹⁴, Ashrafsadat Mousavi^15*, Ali Al-Ahmari, MD^16*, Caroline Besley, MD^17*, Mohsen Al Zahrani^18*, Henrik Sengeloev^19*, Constantijn J.M. Halkes, MD^20*, Rawad Suleiman Rihani, MBBS, MD^21*, Mahmoud Aljurf^22*, Estelle Verburgh, MBChB, M Med Int, FCPSA, PhD²³, Jennifer Clay Sr., MD, PhD^24*, Carlos Pinho Vaz^25*, Khaled Halahleh Sr., MD^26*, Sarah Lawson^27*, Nour Ben Abdeljelil, MD^28*, Marica Laurino, MD^29*, Jakob Passweg Sr.³⁰, Emma Nicholson, MD^31*, Ben Carpenter, MD^32*, Franco Locatelli, MD³³, Matthias Stelljes, MD^34*, Matjaz Sever, MD, PhD³⁵, Camilla Frieri^36,37*, Austin G. Kulasekararaj, MD, MBBS, FRCPath, MRCP³⁸ and Regis Peffault De Latour^39,40*

¹Severe Aplastic Anemia Working Party, European Group for Blood and Marrow Transplantation (EBMT), Leiden, Netherlands
²Hematology and BMT Unit, AORN San Giuseppe Moscati, Avellino, Italy
³EBMT Statistical Unit, Leiden, Netherlands
⁴EBMT Leiden Study Unit, Leiden, Netherlands
⁵EBMTClinical Study Unit, Leiden, Netherlands
⁶Dept. of Haematological Medicine, King's College Hospital NHS Foundation Trust, London, United Kingdom
⁷Hematology and Transplant Unit, Saint Louis Hospital, APHP, Paris, France
⁸French Reference Center for Aplastic Anemia and Paroxysmal Nocturnal Hemoglobinuria, Saint Louis Hospital, Paris, France
⁹Pierre and Marie Curie Center, Algiers, Algeria
¹⁰Fundacja "Na Ratunek Dzieciom z Choroba Nowotworowa", Wroclaw, Dolnoslaskie, Poland
¹¹The Russian Federationn Children's Research Hospital, MOSCOW, Russian Federation
¹²Dmitriy Rogachev National Medical Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
¹³RM Gorbacheva Research Institute, Pavlov University, Saint-Petersburg, Russian Federation
¹⁴Department of Pediatric Hematology and Immunology, University Hospital Robert Debré, Assistance Publique des Hôpitaux de Paris (APHP), Paris, France
¹⁵Shariati Hospital, Teheran, Iran (Islamic Republic of)
¹⁶King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
¹⁷Department of Haematology, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, United Kingdom
¹⁸King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
¹⁹Rigshospitalet, Copenhagen, Denmark
²⁰Hematology, Leiden University Medical Center, Leiden, Netherlands
²¹King Hussein Cancer Centre Pediatric BMT Program, Amman, Jordan
²²King Faisal Specialist Hospital & Research Centre, Oncology (Section of Adult Haematolgy/BMT) – Riyadh, Saudi Arabia, Riyadh, Saudi Arabia
²³University of Cape Town, Cape Town, South Africa
²⁴Yorkshire Blood & Marrow Transplant Program, Leeds, United Kingdom
²⁵Inst. Português de Oncologia do Porto, Porto, Portugal
²⁶King Hussein Cancer Centre Adult BMT Program, AMMAN, Jordan
²⁷Birmingham Children`s Hospital, Birmingham, United Kingdom
²⁸Centre National de Greffe de Moelle Osseuse, Tunis, Tunisia
²⁹UO Ematologia e terapie cellulari, IRCCS Ospedale Policlinico San martino, Genova, Italy
³⁰University Hospital Basel, Basel, Switzerland
³¹Royal Marsden NHS Foundation Trust, London, United Kingdom
³²University College London Hospitals NHS Foundation Trust, London, United Kingdom
³³Department of Pediatric Hematology/Oncology, Cell and Gene Therapy, IRCCS Bambino Gesù Children’s Hospital, Catholic University of the Sacred Heart, Rome, Italy
³⁴Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital Muenster, Muenster, Germany
³⁵UNIVERSITY CLINICAL CENTRE, LJUBLJANA, Slovenia
³⁶Hematology and Transplant Unit, A.O.R.N. S. Giuseppe Moscati, Avellino, Italy
³⁷European Bone Marrow Transplantation society, Severe Aplastic Anemia Working Party, Leiden, Netherlands
³⁸London, ENG, United Kingdom
³⁹BMT unit, Hôpital Saint-Louis,, Paris, France
⁴⁰French Référence Center for Aplastic Anemia and Paroxysmal Nocturnal Hemoglobinuria, Paris, France

Stephanie Clugston, MBBS¹, Sylvie Chevret^2*, Charlotte Jubert, MD^3,4*, Anne Sirvent^5*, Arthur Sterin^6*, Virginie Gandemer^7*, Jérôme Cornillon^8*, Fanny Rialland Battisti, MD^9*, Jean-Hugues Dalle, MD, PHD¹⁰, Edouard Forcade, MD, PhD^4,11*, Benedicte Bruno^4,12*, Catherine Paillard, MD, PHD^13*, Cecile Pochon^14*, Michael Loschi, MD, PhD^15*, Raynier Devillier, MD, PhD^16*, Marie-Thérèse Rubio, MD, PhD^17*, Jacques-Olivier Bay, MD, PhD^18*, Eolia Brissot¹⁹, Jerome Larghero^20*, Éliane Gluckman²¹, Gerard Socie^1,4,22, Flore Sicre De Fontbrune^1,4,22* and Regis Peffault De Latour^1,4,22,23*

¹Bone Marrow Transplantation (BMT) Unit, Saint Louis Hospital, Assistance Publique — Hôpitaux de Paris (AP-HP), Paris, France
²Biostatistics and Medical Information Department, Saint Louis Hospital, Assistance Publique — Hôpitaux de Paris (AP-HP), Paris, France
³Pediatric BMT Unit, Bordeaux University Hospital, Bordeaux, France
⁴French Reference Center for Aplastic Anemia and Paroxysmal Nocturnal Hemoglobinuria, Saint Louis Hospital, Paris, France
⁵Pediatric BMT Unit, Montpellier, France
⁶Hématologie, immunologie et oncologie pédiatrique, Hôpitaux Universitaires de Marseille, Marseille, France
⁷Pediatric BMT Unit, Rennes, France
⁸Département d'hématologie Clinique et de Thérapie Cellulaire, CHU Saint-Etienne, Saint-Etienne, France
⁹Pediatric BMT Unit, Nantes University Hospital, Nantes, France
¹⁰Pediatric BMT Unit, Robert-Debré, AP-HP, Paris, France
¹¹BMT and Cell Therapy Unit, Bordeaux, France
¹²Pediatric BMT Unit, Lille, France
¹³Pediatric BMT Unit, Strasbourg, France
¹⁴Department of Hematology, Centre Hospitalier Régional Universitaire (CHRU), Vandoeuvre-les-Nancy, France
¹⁵Hematology Department, Nice University Hospital, Nice, France
¹⁶Hematology and Transplantation, Institut Paoli-Calmettes, Aix Marseille University, Marseille, France
¹⁷BMT Unit, Nancy, France
¹⁸BMT Unit, Clermont-Ferrand University Hospital, Clermont-Ferrand, France
¹⁹Service d’hématologie et des maladies du sang, Hôpital Saint-Antoine, Paris, France
²⁰Cell Therapy Unit, Saint-Louis Hospital, APHP, Paris, France
²¹Eurocord, Saint Louis Hospital, AP-HP, Paris, France
²²University Paris Diderot, Paris, France
²³Severe Aplastic Anemia Working Party of the European Group for Blood and Marrow Transplantation, Leiden, Netherlands

Maria Gabarrós-Subirà^1*, Helena Pomares^2*, Elisa López-Fernández^3*, Alberto Hernández-Sánchez^4*, Lourdes Hermosín, PhD^5*, Gonzalo Carreño, PhD^6*, Ivan Martin Castillo^7*, Juan Dominguez Garcia, MD^8*, Marta Santiago, MD^9*, Maria Jesús Pascual, MD^10*, Ana Batlle^11*, Maria Julia Montoro, MD, PhD^12*, Blanca Ferrer Lores, MD^7*, Rosa Ayala, MD^6*, José Cervera, MD, PhD^9*, Lucia Lopez Corral, MD^13*, Francisca Maria Hernandez, DM^14*, Francesc Bosch Albareda, MD¹⁵, Montserrat Arnan, MD, PhD^16*, Carolina Martinez-Laperche, PhD^17* and Andres Jerez, MD, PhD^18*

¹Department of Hematology, University Hospital Vall d’Hebron, Barcelona, España., Barcelona, Spain
²Clinical Hematology Department, ICO-Hospitalet, Hospital Durán i Reynals. IDIBELL, Barcelona., Barcelona, Spain
³Department of Hematology, University Hospital Virgen de las Nieves, Granada, Spain
⁴Departmente of Hematology, University Hospital Salamanca, Barcelona, Spain
⁵Department of Hematology, Hospital Jerez de la Frontera, Jerez de la Frontera, Cádiz, Spain
⁶Hospital Universitario 12 de Octubre, Madrid, Spain
⁷Hematology Department, Hospital Clínico Universitario de Valencia, Valencia, Spain
⁸University Hospital MarquéS De Valdecilla - IDIVAL, Santander, Spain
⁹Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
¹⁰Hospital Regional de Málaga, Málaga, Spain
¹¹Department of Hematology, Hospital U. Marqués de Valdecilla, Santander, Spain
¹²Experimental Hematology. Hematology Department Vall d´Hebron Institute of Oncology (VHIO), Hospital Universitari Vall d’Hebrón, BARCELONA, Spain
¹³Hospital Universitario de Salamanca, Instituto de Investigacion Biomedica de Salamanca (IBSAL), Centro de Investigación del Cancer (IBMCC-USAL, CSIC), Salamanca, Spain
¹⁴Department of Hematology, Hospital Virgen de las Nieves, Granada, Spain
¹⁵Experimental Hematology Unit, Vall d’Hebron Institute of Oncology (VHIO), Vall d'Hebron University Hospital, University Autonoma of Barcelona (UAB), Barcelona, Spain
¹⁶Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), University of Barcelona, Barcelona, Spain
¹⁷Department of Hematology, Hospital General Universitario Gregorio Marañón, Madrid, Spain
¹⁸Experimental Hematology. Hematology Department Vall d´Hebron Institute of Oncology (VHIO), Hospital Universitari Vall d’Hebrón, Barcelona, Spain

Carlos Jimenez-Vicente^1,2*, Maria Queralt Salas^1,3*, Jordi Esteve, MD, PhD^4,5, Monica Baile Gonzalez^6*, Carmen Martin, MD, PhD^7*, Itziar Oiartzabal Ormategui, MD^8*, Albert Esquirol, MD^9*, Felipe Peña, MD^10,11*, Sara Fernandez-Luis^12*, Inmaculada Heras, MD^13*, Ana Pilar Gonzalez-Rodriguez^14*, Alberto Lopez Garcia, MD¹⁵, Tamara Torrado, MD^16*, Adolfo Jesús Sáez Marín, MD^17*, Cynthia Acosta Fleitas, PhD^18*, Lucia García Mañó^19*, Sara Villar, MD^20*, Silvia Filafferro^21*, Pascual Basalobre^22* and Maria Jesús Pascual, MD^23*

¹Hematopoietic Cell Transplantation Unit, Hospital Clínic de Barcelona, ICHMO, Barcelona, Spain
²Instituto de Investigaciones Biomédicas August Pi i Sunyer (IDIBAPS),, Barcelona, Spain
³Fundació de Recerca Clínic Barcelona-Institut d’Investigacions Biomèdiques August Pi i Sunyer (FRCB-IDIBAPS), Barcelona, Spain
⁴Fundació de Recerca Clínic Barcelona-Institut d'Investigacions Biomèdiques August Pi i Sunyer (FRCB-IDIBAPS), Barcelona, Spain
⁵Hematology Department, Hospital Clínic Barcelona, ICAMS, Barcelona, Spain
⁶Hospital Universitario de Salamanca, Instituto de Investigacion Biomedica de Salamanca (IBSAL), Centro de Investigación del Cancer (IBMCC-USAL, CSIC), Salamanca, Spain
⁷Hospital Universitario Reina Sofía, Cordoba, Spain
⁸Hematology Department, Hospital Universitario de Donosti, Donosti, Spain
⁹Hematology and Hemotherapy Department, Hospital de la Sant Creu i Sant Pau. IIB-Sant Pau and José Carreras Leukemia Research Institutes. Universitat Autónoma de Barcelona, Barcelona, Spain
¹⁰Clinical Hematology Department, Institut Català d’Oncologia-Hospitalet, IDIBELL, Barcelona, Spain
¹¹Institut Català d'Oncologia - Hospital Duran i Reynals, Barcelona, Spain
¹²Santander, Spain
¹³Hematology Division, Hospital Morales Meseguer, Murcia, Spain
¹⁴Hospital Universitario Central de Asturias, Oviedo, Spain
¹⁵Fundacion Jimenez Diaz University Hospital, Madrid, Spain
¹⁶Hospital Universitario de A Coruña, A Coruña, Spain
¹⁷Servicio de Hematología, Hospital 12 de Octubre, Madrid, Madrid, Spain
¹⁸Hospital Universitario de Gran Canaria Doctor Negrín, Las Palmas, ESP
¹⁹Hematology Department., Hospital Universitario Son Espases, IdISBa., Palma, Spain
²⁰Hematology and Cell Therapy Department. Clinica Universidad de Navarra. IdiSNA., Pamplona, Spain
²¹Grupo EspañOl De Trasplante De Progenitores HematopoyéTicos Y Tera, Madrid, ESP
²²Grupo Español de Trasplante de Progenitores Hematopoyéticos y Terapia Celular, Madrid, Spain
²³Hematology Department, Hospital Regional Universitario de Málaga, Málaga, Spain

Zhihui Li^1*, Xianxuan Wang^1*, Keyan Yang^2*, Lei Wang^1*, Xiaopei Wen^1*, Jingjing Wang^1*, Jing Li^1*, Yanzhi Song^3*, Yongqiang Zhao^1*, Qinlong Zheng, MD^4* and Tong Wu, MD¹

¹Department of Bone Marrow Transplantation, Beijing GoBroad Boren Hospital, Beijing, China
²Laboratory of Molecular Diagnostics, Beijing Boren Hospital, Beijing, China
³Beijing, China
⁴Laboratory of Molecular Diagnostics, Beijing GoBroad Boren Hospital, Beijing, China

Joanna Drozd-Sokolowska, MD, PhD^1*, Luuk Gras^2*, Laurien Baaij^3*, Linda Koster^3*, Emma Nicholson, MD^4*, Peter Dreger⁵, Tobias Gedde-Dahl, MD^6*, Stephan Mielke, MD⁷, Urpu Salmenniemi, MD^8*, Grzegorz Basak^9*, Patrice Chevallier, MD, PhD¹⁰, Gerald Wulf^11*, Johannes Schetelig, MD, MSc¹², Jan-Erik Johansson^13*, Arnon Nagler, MD¹⁴, Stéphanie Nguyen Quoc, MD, PhD^15*, Victoria Potter^16*, Elisa Sala^17*, Anna Bergendahl Sandstedt^18*, Yener Koc^19*, Robert Zeiser, MD²⁰, Michel van Gelder^21*, Wieslaw Wiktor Jedrzejczak, MD, PhD^1*, Kavita K Raj, MD, PhD, FRCP, FRCPath²², Olivier Tournilhac^23* and Donal P McLornan, MD, PhD^24*

¹Medical University of Warsaw, University Clinical Centre, Warsaw, Poland
²EBMT, Leiden, Netherlands
³EBMT Leiden Study Unit, Leiden, Netherlands
⁴Royal Marsden NHS Foundation Trust, London, United Kingdom
⁵Department of Medicine V, Hematology, Oncology and Rheumatology, University Hospital Heidelberg, Heidelberg, Germany
⁶Oslo University Hospital, Rikshospitalet, Oslo, Norway
⁷Department of Laboratory Medicine, Cell Therapy and Allogenic Stem Cell Transplantation (CAST), Karolinska Institute & University Hospital, Stockholm, Sweden
⁸HUCH Comprehensive Cancer Center, Helsinki, Finland, Helsinki, Finland
⁹Department of Hematology, Transplantation and Internal Medicine, Medical University of Warsaw, Warsaw, Poland
¹⁰Hematology Department, Nantes University Hospital, Nantes, France
¹¹Department of Hematology and Medical Oncology, University Hospital Goettingen, Goettingen, Germany
¹²Department of Internal Medicine I, University Hospital Carl Gustav Carus, Technical University Dresden, Dresden, Saxony, Germany
¹³Sahlgrenska University Hospital, Goeteborg, Sweden
¹⁴Division of Hematology and Bone Marrow Transplantation, Chaim Sheba Medical Center, Tel Aviv, Israel
¹⁵Universite Paris IV, Hopital la Pitié-Salpêtrière, Paris, France
¹⁶Dept. of Haematological Medicine, King's College Hospital NHS Foundation Trust, London, United Kingdom
¹⁷Department of Internal Medicine III, University Hospital of Ulm, Ulm, Germany
¹⁸University Hospital | Linkoeping, Linkoeping, Sweden
¹⁹Medicana International Hospital Istanbul, Istanbul, TUR
²⁰University of Freiburg, Freiburg, Germany
²¹University Hospital Maastricht, Maastricht, Netherlands
²²Department of Haematology, University College London Hospitals NHS Trust, London, United Kingdom
²³CHU Estaing, Clermont-Ferrand University Hospital, CLERMONT FERRAND, AURA, France
²⁴Department of Haematology, University College London Hospitals NHS Trust, London, ENG, United Kingdom