Mohsen Alzahrani^1,2,3,4*, Bader Alahmari^3,4,5, Ahmed Alaskar, MD, FRCPC^1,2,3,4, Ayman Hejazi^1,2,3,6*, Giamal Edin Gmati, MD^3,4,5*, Khadega A. Abuelgasim^1,3,4*, Hind Salama^1,3,4*, Abdulrahman Raiza^1,3,4*, Abdulrahman Alghamdi^4,7*, Walid Mashaqbeh^3,8*, Heba Alshobaki^1*, Tahani Alanazy^1*, Maybelle Balili^1*, Muhammad Qureshi^1*, Mazin Ahmed^1*, Husam Mazin Alsadi, MD^1* and Moussab Damlaj^1,3,4*

¹Division of Adult Hematology and SCT, Department of Oncology, King Abdulaziz Medical City, Riyadh, Saudi Arabia
²Saudi Society of Blood & Marrow Transplantation (SSBMT), Riyadh, Saudi Arabia
³King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
⁴King Saud Bin Abdulaziz University For Health Sciences, Riyadh, Saudi Arabia
⁵King Abdulaziz Medical City, Riyadh, Saudi Arabia
⁶King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
⁷Pharmaceutical Care Department, King Abdulaziz Medical City, Riyadh, Saudi Arabia
⁸Stem Cell Lab, Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City, Riyadh, Saudi Arabia

Pietro Merli, MD^1*, Daria Pagliara, MD, PhD^1*, Federica Galaverna, MD, PhD^1*, Giuseppina Li Pira, PhD^1*, Valentina Bertaina, PhD^1*, Stefania Gaspari, MD^1*, Emilia Boccieri, MD^1*, Marco Becilli, MD^1*, Giovanna Del Principe, MD^2*, Olivia Marini, PhD^1*, Francesca Del Bufalo, MD^1*, Francesco Quagliarella, MD^1*, Antonio Giacomo Grasso, MD^1*, Tiziana Corsetti, PhD^3*, Matteo Di Nardo, MD^4*, Luisa Strocchio, MD^1*, Mattia Algeri, MD^1* and Franco Locatelli, MD, PhD^1,5

¹Department of Pediatric Hematology/Oncology, Cell and Gene Therapy, IRCCS Bambino Gesù Children’s Hospital, Rome, Italy
²Transfusion Unit, Department of Laboratories, IRCCS Bambino Gesù Children’s Hospital, Rome, Italy
³Hospital Pharmacy, IRCCS Bambino Gesù Children’s Hospital, Rome, Italy
⁴Pediatric Intensive Care Unit, IRCCS Bambino Gesù Children’s Hospital, Rome, Italy
⁵Department of Pediatrics, University of Rome Sapienza, Rome, Italy

Youjin Wang, PhD, BPharm^1*, Derek W Brown, PhD^2*, Weiyin Zhou, MS^3,4*, Tao Wang, PhD^5*, Meredith Yeager, PhD^6*, Andrew St. Martin, MS^7*, Stephen R. Spellman, MS^8,9*, Stephanie J. Lee, MD, MPH¹⁰, Stephen J. Chanock, MD^2*, Wael Saber, MD, MS^11,12, Mitchell Machiela, PhD^13* and Shahinaz Gadalla, MD, PhD^14*

¹Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD
²Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD
³Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
⁴Clinical Research Directorate, Frederick National Laboratory for Cancer Research, Frederick, MD
⁵Medical College of Wisconsin, Milwaukee, WI
⁶National Cancer Institute, Bethesda, MD
⁷CIBMTR Department of Medicine, Medical College of Wisconsin, Milwaukee, WI
⁸CIBMTR (Center for International Blood and Marrow Transplant Research), Medical College of Wisconsin, Milwaukee, WI
⁹Center for International Blood and Marrow Transplant Research, Minneapolis
¹⁰Fred Hutchinson Cancer Research Center, Seattle, WA
¹¹CIBMTR, Medical College of Wisconsin, Milwaukee, WI
¹²CIBMTR (Center for International Blood and Marrow Transplant Research), Department of Medicine, Medical College of Wisconsin, Milwaukee, WI
¹³National Cancer Institute, Rockville, MD
¹⁴Division of Cancer Epidemiology & Genetics, NIH-NCI Clinical Genetics Branch, Rockville, MD

Bhagirathbhai Dholaria, MBBS¹, Myriam Labopin, MD^2*, Jaime Sanz Caballer, MD, PhD^3*, Annalisa Ruggeri, MD^4*, Jan J. Cornelissen, MD, PhD⁵, Hélène Labussière-Wallet^6*, Didier Blaise, MD⁷, Edouard Forcade, MD⁸, Patrice Chevallier, MD, PhD⁹, Anna Grassi, MD^10*, Ludmila S Zubarovskaya, MD, PhD, professor^11*, Jurgen H.E. Kuball, MD, PhD¹², Patrice Ceballos, MD, PhD^13*, Fabio Ciceri, MD^14*, Bipin N. Savani, MD¹⁵, Arnon Nagler, MD^16,17 and Mohamad Mohty, MD, PhD^18,19,20

¹Department of Medicine, Division of Hematology and Oncology, Vanderbilt University Medical center, Nashville, TN
²EBMT Paris study office; Department of Haematology,, Saint Antoine Hospital; INSERM UMR 938, Sorbonne University, Paris, France
³Hematology Department, Hospital Universitario y Politécnico La Fe, Valencia, Valencia, Spain
⁴Department of Pediatric Hematology and Oncology, IRCCS Ospedale Pediatrico Bambino Gesu, Rome, Italy
⁵Department of Hematology, Erasmus MC Cancer Institute, Rotterdam, Netherlands
⁶Service Hematologie, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Pierre Bénite, France, Lyon, France
⁷Institut Paoli Calmettes, Marseille, France
⁸Service d’hematologie et thérapie Cellulaire, CHU Bordeaux, Bordeaux, France
⁹Hematology Clinic, CHU Nantes, Nantes, France
¹⁰ASST Papa Giovanni XXIII, Bergamo, ITA
¹¹RM Gorbacheva Research Institute, Pavlov University, St. Petersburg, Russian Federation
¹²Department of Hematology, University Medical Center Utrecht, Utrecht, Netherlands
¹³Department of Hematology, Hopital St Eloi CHU de Montpellier, Montpellier, France
¹⁴San Raffaele Telethon Institute for Gene Therapy (SR-TIGET), IRCCS San Raffaele Scientific Institute, Milan, Italy
¹⁵Department of Medicine, Division of Hematology and Oncology, Vanderbilt University Medical Center, Nashville, TN
¹⁶EBMT, Acute Leukemia Working Party office, Paris, France
¹⁷Division of Hematology, Sheba Medical Center, Tel Hashomer, Israel
¹⁸EBMT ALWP, Paris, France
¹⁹Hospital Saint-Antoine, Paris University UPMC, INSERM U938, Paris, France
²⁰Saint Antoine Hospital, Paris, France

Larisa Broglie, MD, MS^1*, Brian D Friend, MD², Brent Logan, PhD^3*, Caitrin Fretham, MPH^4*, Gary J. Schiller, MD⁵, Bipin N. Savani, MD⁶, Edward A. Stadtmauer, MD, FACP⁷, Saurabh Chhabra, MD, MS⁸, Marcelo C. Pasquini, MD, MS⁹, Monica Thakar, MD¹⁰ and Mohamed Sorror, MD, MSc^11*

¹Columbia University, New York, NY
²Texas Medical Center, Houston, TX
³Center for International Blood and Marrow Transplant Research, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI
⁴National Marrow Donor Program/Be The Match, Minneapolis, MN
⁵David Geffen School of Medicine at University of California, Los Angeles, CA
⁶Department of Medicine, Division of Hematology-Oncology, Vanderbilt University, Brentwood, TN
⁷University of Pennsylvania Abramson Cancer Center, Philadelphia, PA
⁸Department of Medical College of Wisconsin, Division of Hematology/Oncology, Milwaukee
⁹CIBMTR (Center for International Blood and Marrow Transplant Research), Department of Medicine, Medical College of Wisconsin, Milwaukee, WI
¹⁰Fred Hutchinson Cancer Research, Seattle, WA
¹¹Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA

Adetola A. Kassim, MD, MS^1,2,3, Josu de la Fuente⁴, Ali Debsan Alahmari, MBBS, MD, MNAMS^5*, Michael J. Eckrich, MD, MPH⁶, Rabi Hanna, MD⁷, Nathalie Dhedin, MD^8*, Biljana N. Horn, MD⁹, Vandy Black, MD, MSc^10,11, Roseane V Gouveia^12*, Adriana Seber, MD, MS¹³, Belinda Pinto Simões, MD, PhD^14,15*, Thalita Cristina de Mello Costa, MD^16*, Renato Guerino-Cunha^17*, Carmem M. S. Bonfim, MD PhD^18,19*, Roberto Luiz da Silva^20*, Nelson Hamerschlak, MD, PhD^21,22, Juliana Folloni Fernandes, MD^23*, Michael Kent, MD, BS²⁴, Satya Prakash Yadav, MBBS, MD^25,26, Erfan Nur, MD, PhD^27,28, Mohsen Alzahrani^29,30*, Ben Carpenter, PhD^31*, William Tse, MD^32,33*, Maria Isabel^34*, Hemalatha G Rangarajan, MD^35,36,37, Ibrahim Ahmed, MD³⁸, Adeseye Michael Akinsete, MBBS^39*, Courtney D. Fitzhugh, MD⁴⁰, Kathryn A. Culos, PharmD^41*, Leena Karnik, FRCPath, MRCP^42*, James Connelly, MD^43*, Carrie Kitko, MD^44,45, Jennifer Andrews, MD, MSc⁴⁶, Karina L Wilkerson, NP, MSN^47*, Robert Brodsky^48,49*, Tatsuki Koyama^50* and Michael R. DeBaun, MD, MPH⁵¹

¹Vanderbilt-Meharry Center of Excellence in Sickle Cell Disease, Nashville, TN
²Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
³Department of Medicine, Division of Hematology-Oncology, Vanderbilt University Medical Center, Nashville, TN
⁴Department of Paediatrics, St. Mary's Hospital/Imperial College London, London, United Kingdom
⁵King Faisal Hospital & Research Ctr., Riyadh, SAU
⁶Pediatric Blood and Marrow Transplantation Program, Texas Transplant Institute at Medical City Dallas, San Antonio, TX
⁷Blood and Marrow Transplant Program, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
⁸St-Louis Hospital, APHP, Adolescents and Young Adults Hematology Department, Paris, France
⁹UF Shand's Children Hospital, University of Florida, Gainesville, FL
¹⁰University of Florida College of Medicine, Newberry, FL
¹¹Department of Pediatrics, Division of Pediatric Hematology and Oncology, University of Florida College of Medicine, Gainesville, FL
¹²Hospital Sao Camilo Pompeia, Pediatric Oncology and Hematopoietic Cell Transplantation, São Paulo, Brazil
¹³Hospital Samaritano, Sao Paulo, SP, Brazil
¹⁴Department of Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil., Ribeirão Preto, Brazil
¹⁵Center for Cell-Based Therapy, Hemotherapy Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil., Ribeirão Preto, Brazil
¹⁶School of Medicine of Ribeirão Preto, University of São Paulo, São José Do Rio Preto, Brazil
¹⁷Ribeirão Preto Medical School, University of São Paulo, Departments of Medical Imaging and Hematology /Clinical Oncology, São Paulo, Brazil
¹⁸Federal University of Parana, Curitiba, PR, Brazil
¹⁹Hospital Nossa Senhora das Graças, Curitiba, Brazil
²⁰IBCC Oncologia (Instituto Brasileiro de Controle do Câncer), São Paulo, Brazil
²¹Hematology, Hospital Israelita Albert Einstein, São Paulo, Brazil
²²Hospital Israelita Albert Einstein, Sao Paulo, Brazil
²³Department of Hematology and Bone Marrow Transplantation, Hospital Israelita Albert Einstein, Hematology unit, São Paulo, Brazil
²⁴Atrium Health/Levine Children's Hospital, Charlotte, NC
²⁵Pediatric Hemato-Oncology & BMT, Medanta The Medicity, Gurgaon, India
²⁶Pediatric Hemato-Oncology & BMT, Fortis Memorial Research Institute, Gurgaon, Haryana, India
²⁷Department of Clinical Hematology, Slotervaart Hospital, Amsterdam, Netherlands
²⁸Department of Clinical Hematology, Amsterdam University Medical Centers, Academic Medical Center, Amsterdam, Netherlands
²⁹Saudi Society of Blood & Marrow Transplantation (SSBMT), Riyadh, Saudi Arabia
³⁰Division of Adult Hematology and SCT, Department of Oncology, King Abdulaziz Medical City, Riyadh, Saudi Arabia
³¹University College London Hospital, London, United Kingdom
³²Bone Marrow Transplant, University of Louisville, Louisville, KY
³³University of Louisville, Louisville, KY
³⁴Vall d' Hebron Hospital, Department of Hematology / Oncology, Barcelona, Spain
³⁵Hem/Onc/BMT, Nationwide Children’s Hospital, Columbus, OH
³⁶Division of Pediatric Hematology, Oncology, Blood and Marrow Transplant, Nationwide Childrens Hospital, Columbus, OH
³⁷Nationwide Childrens Hospital, Columbus, OH
³⁸Division of Pediatric Hematology, Oncology, Blood and Marrow Transplant, Children's Mercy Hospital, Kansas City, MO
³⁹College of Medicine, Division of Pediatric Hematology & Oncology, Lagos University Teaching Hospital, Lagos, Nigeria
⁴⁰Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
⁴¹Department of Pharmacy, Vanderbilt University Medical Center, Nashville, TN
⁴²Department of Paediatrics, St. Mary's Hospital, London, United Kingdom
⁴³Department of Pediatrics, Division of Pediatric Hematology Oncology, Vanderbilt University Medical Center, Nashville, TN
⁴⁴Pediatric Hematology/Oncology Division, Vanderbilt-Ingram Cancer Center, Nashville, TN
⁴⁵Vanderbilt University Medical Center, Franklin, TN
⁴⁶Vanderbilt University Medical Center, Nashville, TN
⁴⁷Hematology/Oncology Department Sickle Cell Disease Center of Excellence, Vanderbilt University Medical Center, Nashville, TN
⁴⁸Johns Hopkins Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD
⁴⁹Division of Hematology, Johns Hopkins University School of Medicine, Baltimore, MD
⁵⁰Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, TN
⁵¹Vanderbilt-Meharry Center for Excellence in Sickle Cell Disease, Vanderbilt University School of Medicine, Nashville, TN