Paul Coppo^1*, Marie Scully, MD², Javier de la Rubia^3,4*, Flora Peyvandi^5,6, Spero Cataland⁷, Johanna A Kremer Hovinga Strebel^8*, Paul Knoebl^9*, Katerina Pavenski, MD^10*, Jessica Minkue Mi Edou^11*, Filip Callewaert^12* and Rui de Passos Sousa^13*

¹Department of Hematology, Reference Center for Thrombotic Microangiopathies (CNR-MAT), Saint-Antoine University Hospital, AP-HP, Paris, France
²Cardiometabolic Programme, NIHR UCLH/UCL BRC, Department of Haematology, University College London Hospital, London, United Kingdom
³Hematology Department, Internal Medicine, School of Medicine and Dentistry, Catholic University of Valencia, Valencia, Spain
⁴Hospital Doctor Peset, Valencia, Spain
⁵Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
⁶Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
⁷Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH
⁸Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
⁹Division of Hematology and Hemostasis, Department of Medicine 1, Medical University of Vienna, Wien, Austria
¹⁰Departments of Medicine and Laboratory Medicine, St. Michael’s Hospital, University of Toronto, Toronto, ON, Canada
¹¹Sanofi, Zwijnaarde, Belgium
¹²Sanofi, Diegem, Belgium
¹³Sanofi, Lisbon, Portugal

Moataz Ellithi, MBBCh¹, Fouad Khalil, MD^1*, Smitha N Gowda, MD^1*, Waqas Ullah, MD^2*, Radowan Elnair, MD³, Hafez M Abdullah, MD^1* and Faiz Anwer, MD⁴

¹Department of Internal Medicine, University of South Dakota School of Medicine, Sioux Falls, SD
²Department of Internal Medicine, Abington Hospital - Jefferson Health, Abington, PA
³University of Nebraska Medical Center, Omaha, NE
⁴Taussig Cancer Institute, Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland, OH

Eric McGinnis, MD, BSc¹, Spencer D. Martin, MD, PhD^1* and Tyler W. Smith, MD^1,2*

¹Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
²Division of Hematopathology, Department of Pathology and Laboratory Medicine, Vancouver General Hospital, Vancouver, BC, Canada

Adrian Newland, MD¹, Howard A. Liebman, MD², Vickie McDonald, MD^3*, Marc Michel^4*, Yoshitaka Miyakawa⁵, Wim Parys, MD^6*, Hans De Haard^7*, Peter Ulrichts^7*, Marie Godar^7*, Kristof De Beuf^8*, Jaume Ayguasanosa^8*, Catherine M Broome⁹ and David J. Kuter, MD¹⁰

¹Barts and The London School of Medicine and Dentistry, London, United Kingdom
²Jane Anne Nohl Division of Hematology, USC Norris Cancer Hospital, Los Angeles, CA
³Clinical Haematology, Barts Health NHS Trust &Queen Mary University, London, UK, London, United Kingdom
⁴Hôpital Henri Mondor, Créteil, France
⁵Thrombosis and Hemostasis Center, Saitama Medical University Hospital, Saitama, Japan
⁶argenx, Boston, MA
⁷argenx BVBA, Zwijnaarde, Belgium
⁸argenx, Ghent, Belgium
⁹Division of Hematology, MedStar Georgetown University, Washington, DC
¹⁰Hematology Division, Massachusetts General Hospital, Boston, MA

Musa Alzahrani, MBBS, MHSc^1,2,3,4*, Areej Al Mugairi^4*, Saeed Al Turki^2,5,6*, Waleed Al Rajban^7,8,9*, Fatimah Alshalati^10*, Khadega A. Abuelgasim^11,12,13*, Bader Alahmari^12,13,14, Thamer Al Bogami^2,6,15*, Osama Ali, MD^6,12,14*, Fahad Almodaihsh^16*, Maram Alotaibi^17*, Aamer Aleem, MBBS, FRCP, FRCPath^18* and Ahmed Alaskar, MD, FRCPC^4,11,12,13

¹Department of Medicine, Oncology Center, College of Medicine, Kin Saud University, Riyadh, Saudi Arabia
²King Abdullah International Medical Research Center, King Abdulaziz Medical City, Riyadh, Saudi Arabia
³Division of Adult Hematology and Stem Cell Transplant, Department of Oncology, King Abdulaziz Medical City, Riyadh, Saudi Arabia
⁴Saudi Society of Blood & Marrow Transplantation (SSBMT), Riyadh, Saudi Arabia
⁵Department of Pathology and Laboratory Medicine, Molecular Pathology Division, King Abdulaziz Medical City, Riyadh, Saudi Arabia
⁶King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
⁷King Abdullah International Medical Research Center, King Abdulaziz Medical City, Riyadh, Saudi Arabia 4 Department of Pathology and Laboratory Medicine, Molecular Pathology Division, King Abdulaziz Medical City, Riyadh, Saudi Arabia, Riyadh, Saudi Arabia
⁸Department of Pathology and Laboratory Medicine, Molecular Pathology Division, King Abdulaziz Medical City, Riyadh, Saudi Arabia, Riyadh, Saudi Arabia
⁹King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia, Riyadh, Saudi Arabia
¹⁰Department of Medicine, Oncology Center, College of Medicine, King Saud University, Riyadh, Saudi Arabia
¹¹Division of Adult Hematology and SCT, Department of Oncology, King Abdulaziz Medical City, Riyadh, Saudi Arabia
¹²King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
¹³King Saud Bin Abdulaziz University For Health Sciences, Riyadh, Saudi Arabia
¹⁴King Abdulaziz Medical City, Riyadh, Saudi Arabia
¹⁵Department of Pathology and Laboratory Medicine, Hematopathology Division, King Abdulaziz Medical City, Riyadh, Saudi Arabia
¹⁶Department of Pathology and Laboratory Medicine, Hematopathology Unit, King Saud University Medical City, King Saud University., Riyadh, Saudi Arabia
¹⁷Department of Pathology and Laboratory Medicine, Molecular Genetics Unit, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia
¹⁸Hematology/Oncology Division, Department of Medicine, College of Medicine & King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia

Camila Masias, MD, MPH¹, Shangbin Yang, PhD^2*, Senthil Sukumar, MD³, Alcinda Flowers, MD^4*, Haiwa Wu^5*, Krista Carter^4*, Shili Lin^4*, Chenggon Han^4* and Spero Cataland³

¹Miami Cancer Institute, Baptist Health, Miami, FL
²Ohio State University, Columbus, OH
³Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH
⁴The Ohio State University, Columbus, OH
⁵The Ohio State University, columbus, OH

Nichola Cooper, MD¹, Waleed Ghanima², Alexandra Kruse^3*, Caroline Kruse^3*, Yoshiaki Tomiyama⁴, Drew Provan^5*, Ming Hou⁶, Cristina Santoro^7*, Serge Laborde^8*, Mervyn Morgan^9*, Barbara Lovrencic^10*, Tom Bailey, MSci^11*, Jens Haenig^12* and James B. Bussel¹³

¹Hammersmith Hospital, Imperial College London, London, United Kingdom
²Department of Medicine, Østfold Hospital Trust, Kalnes, Norway
³Platelet Disorder Support Association, Cleveland, OH
⁴Osaka University Hospital, Osaka, Japan
⁵Barts and The London School of Medicine and Dentistry, London, United Kingdom
⁶Department of Hematology, Qilu Hospital of Shandong University, Jinan, China
⁷Hematology, University Hospital Policlinico Umberto I, Rome, Italy
⁸O’Cyto, Saint Loubès, France
⁹ITP Support Association, Bolnhurst, United Kingdom
¹⁰Italian Association for Immune Thrombocytopenic Purpura, Caprino Veronese, Italy
¹¹Adelphi Real World, Bollington, United Kingdom
¹²Novartis Pharma AG, Basel, Switzerland
¹³Division of Hematology/Oncology, Weill Cornell Medical College, New York, NY

Alexander E St. John, MD^1*, Yi Wang, PhD^2*, Junmei Chen, PhD³, Warren Osborn^2*, Xu Wang, MD^1*, Esther Lim, BS^1*, Dominic W. Chung, PhD², Susan Stern, MD^1*, Nathan White, MD^1*, Xiaoyun Fu, PhD³ and Jose A. Lopez, MD, BS³

¹Department of Emergency Medicine, University of Washington, Seattle, WA
²Bloodworks Research Institute, Seattle, WA
³Bloodworks Northwest Research Institute, Seattle, WA

Stephanie L. Seto, PharmD^1*, Megan E. Barra, PharmD, BCPS, BCCCP^2*, Russel J. Roberts, PharmD, BCCCP, FCCM^2* and Rachel P. Rosovsky, MD, MPH³

¹Massachusetts General Hospital, Boston, MA
²Department of Pharmacy, Massachusetts General Hospital, Boston, MA
³Division of Hematology, Massachusetts General Hospital, Boston, MA

O. A. Soboleva, MD^1*, K. I. Ntanisian, MD, PhD^1*, E. K. Egorova, MD, PhD^1*, A. L. Melikyan, MD, PhD^1*, E. G. Gemdzhian, PhD^2*, E. I. Pustovaya, MD, PhD^1*, O. M. Sorkina, MD^1*, K. R. Sabirov, MD^1*, A. V. Grjimolovskiy, MD, PhD^1* and V. G. Savchenko, MD, PhD, Academician¹

¹National Research Center for Hematology, Moscow, Russian Federation
²Biostatistics, National Research Center for Hematology, Moscow, Russian Federation

Daniela Pereira Coelho^1*, Bárbara Almeida Marques, MD^1*, Adriana Roque, MD^2*, Jose Pedro Carda, MD^2*, Patrícia Martinho^3*, Teresa Fidalgo^4* and Maria Leticia Ribeiro, MD, PhD^3,4,5

¹Faculty of Medicine of University of Coimbra, Coimbra, Portugal
²Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine of University of Coimbra, Coimbra, Portugal
³Faculty of Medicine, University of Coimbra, Coimbra, Portugal
⁴Clinical Hematology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
⁵Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal

Marwah W Farooqui, DO^1,2, Samrin Samad^3*, Brittany Blum^3*, Yatri Desai^3*, Sivangi Patel^3*, Shruti Sharma, DO^4*, Krishnan Srinivasan, MD^5* and Masood Ghouse, DO⁶

¹Hematology-Oncology, Franciscan Health-Midwestern University, Olympia Feilds, IL
²University Hospitals Cleveland, Burr Ridge, IL
³Midwestern University-CCOM, Downers Grove, IL
⁴Franciscan Health-Olympia Fields, Olympia Fields, IL
⁵Franciscan Health-Olympia Fileds, Olympia Fileds, IL
⁶Franciscan Health-Olympia Fileds, Olympia Fields, IL

Carlos Saúl Rodríguez-Roque, MD^1,2*, Andres Gomez-De Leon, MD³, Michelle Morcos-Sandino, MD^1*, Nelson Josafat López-Flores, MD^4*, David David Galindo-Calvillo, MD^5*, Elsa Laura Zertuche-González, MD^5*, Anna Cecilia Rodríguez-Zuñiga, MD^4* and David Gomez-Almaguer, MD ³

¹Hematology Service, Universidad Autónoma de Nuevo León, Hospital Universitario "Dr. José Eleuterio González", Monterrey, NL, Mexico
²Universidad Autónoma de Nuevo León, Monterrey, MEX
³Universidad Autonoma de Nuevo Leon, Hospital Universitario "Dr. José Eleuterio Gonzalez", Servicio de Hematología, Monterrey, Mexico
⁴Hospital Universitario "Dr. José E. González", Hematology Service, Universidad Autónoma de Nuevo León, Monterrey, NL, Mexico
⁵Hospital Universitario "Dr. José E. González", Hematology Service, Universidad Autónoma de Nuevo León, Monterrey, Mexico

M Moraima Jimenez, MD^1*, Sabela Bobillo, MD^1,2*, Ana Pérez^3*, Pamela Arenas^4*, Alba Cabirta^5*, Eva Catala, MD^5*, Yva Rodriguez, MD^1*, Lucia Martin, MD^1*, Angel Serna, MD^1*, Francesc Bosch, MD, PhD^1,5 and David Valcárcel, MD, PhD^6,7

¹Department of Hematology, University Hospital Vall d’Hebron, Experimental Hematology, Vall d’Hebron Institute of Oncology (VHIO), Vall d’Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119-129, 08035, Barcelona, Spain
²Department of Hematology, University Hospital Vall d'Hebron, Barcelona, Spain
³Department of Hematology. Vall d’Hebron Institute of Oncology (VHIO), University Hospital Vall d’Hebron., Barcelona, Spain,, Barcelona, Spain
⁴Department of Hematology, University Hospital Vall d’Hebron, Barcelona, Spain
⁵Department of Medicine, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
⁶Department of Hematology, University Hospital Vall d’Hebron, Barcelona, Spain
⁷Experimental Hematology, Vall d’Hebron Institute of Oncology (VHIO), Barcelona, Spain

Doris Boeckelmann, PhD^1*, Antonia Lenz, MS^1*, Salome Fels, MS^1*, Felicia Loewecke, MD^2*, Ekkehart Lausch, MD^3* and Barbara Zieger, MD⁴

¹Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, University Medical Center, Medical Faculty, University of Freiburg, Freiburg, Germany
²Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, University Medical Center, Medical Faculty, University of Freiburg, Freiburg, DEU
³Pediatric Genetics Section, University Medical Center, Medical Faculty, University of Freiburg, Freiburg, Germany
⁴Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, Faculty of Medicine, University Medical Center, Medical Faculty, University of Freiburg, Freiburg, Germany

Ana Marín-Quílez, MSc^1*, Ignacio García-Tuñón, PhD^1*, Cristina Fernández-Infante, MSc^1*, Hernández-Cano Luis, MSc^1*, Veronica Palma-Barqueros, MSc^2*, Sánchez-Martín Manuel, PhD^1,3*, José Ramón González-Porras, MD, PhD^4*, Guerrero Carmen, PhD^1*, Rocio Benito, PhD^1*, Jose Rivera, PhD^2,5*, Jesus Maria Hernández-Rivas, MD, PhD^1,4 and Jose Maria Bastida, MD, PhD^4,6*

¹IBSAL, IBMCC, CIC, Universidad de Salamanca-CSIC, Salamanca, Spain
²Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, CB15/00055-CIBERER, Murcia, Spain
³Servicio de Transgénesis, Universidad de Salamanca, Salamanca, Spain
⁴Department of Hematology, University Hospital of Salamanca, IBSAL, Salamanca, Spain
⁵On behalf of the Project “Functional and Molecular Characterization of Patients with Inherited Platelet Disorders” of the Hemorrhagic Diathesis Working Group of the Spanish Society of Thrombosis and Haemostasis, Murcia, Spain
⁶On behalf of the Project “Functional and Molecular Characterization of Patients with Inherited Platelet Disorders” of the Hemorrhagic Diathesis Working Group of the Spanish Society of Thrombosis and Haemostasis, Salamanca, Spain

Rana Kasht^1*, Azra Borogovac, MD² and James N. George, MD³

¹University of Oklahoma Health Sciences Center, Oklahoma City, OK
²Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK
³University of Oklahoma, Oklahoma City, OK

Jennifer Diraimo, MS, CCGC^1*, Caroline Kruse^1*, Michele P. Lambert, MD, MSTR² and Alexandra Kruse^1,3*

¹Platelet Disorder Support Association, Cleveland, OH
²Hematology, Children's Hospital of Philadelphia, Philadelphia, PA
³Tulane University School of Medicine, New Orleans, LA