Andrew T. Kuykendall, MD¹, Kristen Marie Pettit, MD², Abhay Singh, MD, MPH³, Tania Jain, MD⁴, David A Sallman, MD⁵, Qianxing Mo, PhD^1*, Quan Lovette^1*, Ling Zhang, MD⁶, Onyee Chan, MD⁷, Alison R. Walker, MD, MPH, MBA¹, Zhuoer Xie, MD, MS⁸, Jeffrey Lancet, MD⁷, Maria Balasis^1*, Seongseok Yun, MD, PhD⁷, Eric Padron, MD⁷ and Rami S. Komrokji, MD⁷

¹Moffitt Cancer Center, Tampa, FL
²Rogel Cancer Center, University of Michigan, Ann Arbor, MI
³Department of Hematology and Medical Oncology, Taussig Cancer Institute, Cleveland Clinic Foundation, Cleveland, OH
⁴The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Hospital, Baltimore, MD
⁵H. Lee Moffitt Cancer Center, Tampa, FL
⁶Department of Pathology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL
⁷Department of Malignant Hematology, Moffitt Cancer Center, Tampa, FL
⁸H. Lee Moffitt Cancer Institute, Tampa, FL

Elliot Stieglitz, MD¹, Alex Lee, PhD^1*, Steven P. Angus, PhD^2*, Christopher Davis^2*, Donald Barkauskas, PhD^3,4*, David Hall^3*, Scott C. Kogan, MD¹, Julia Meyer, PhD^1*, Steven D. Rhodes, MD, PhD^5*, Xiaoling Xuei, PhD^5*, Kevin Shannon, MD^6*, Mignon L. Loh, MD⁷, Elizabeth Fox, MD^8* and Brenda J. Weigel, MD, MSc⁹

¹University of California, San Francisco, San Francisco, CA
²Indiana University, Indianopolis, IN
³Children’s Oncology Group Operations Statistics and Data Center, Monrovia, CA
⁴Department of Population and Public Health Sciences, Keck School of Medicine of the University of Southern California, Los Angeles, CA
⁵Indiana University, Indianapolis, IN
⁶Department of Pediatrics, University of California, San Francisco, San Francisco, CA
⁷Ben Towne Center for Childhood Cancer Research, Seattle Children’s Hospital, Seattle, WA
⁸St. Jude Children's Research Hospital, Memphis, TN
⁹University of Minnesota, Minneapolis, MN

Sudipto Mukherjee, MD, PhD, MPH¹, Doug J Cattie^2*, Daniel Shaheen, PharmD^2*, Dakota Powell, MPH^2* and Teresa Green, MSPH^2*

¹Department of Hematology and Medical Oncology, Cleveland Clinic Taussig Cancer Institute, Cleveland, OH
²Blueprint Medicines Corporation, Cambridge, MA

Tsewang Tashi, MD¹, Olivier Hermine, MD, PhD², Mariana Castells, MD, PhD^3*, Mar Guilarte, MD, PhD^4*, Vito Sabato, MD, PhD^5*, Marcus Maurer, MD^6*, Jens Panse, MD⁷, Ivan Alvarez-Twose, MD, PhD^8*, Renata Cabral, MD^9*, Robert Bird, MBBS^10*, Stéphane Barete, MD, PhD^11*, Laurence Bouillet, MD, PhD^12*, Maud Hermans, MD, PhD^13*, Paul Van Daele, MD, PhD^14*, David González-De-Olano, MD, PhD^15*, Elizabeth A. Griffiths, MD¹⁶, Joseph Jurcic, MD¹⁷, Ingunn Dybedal, MD, PhD¹⁸, Gandhi Laurent Damaj, MD, PhD^19*, Philippe Schafhausen^20*, Chiara Elena, MD^21*, Tse-Chieh Teh, MD, PhD^22*, Pankit Vachhani, MD^23*, Caroline Labe, BA^24*, Saranya Venugopal, MS, MPharm^24*, Kevin He, PhD^24*, Javier Muñoz-González, PhD^25*, Ben Lampson, MD, PhD^24*, Robyn Scherber, MD^24*, Prithviraj Bose, MD²⁶, Clive Grattan, MD^27*, Thanai Pongdee, MD²⁸, Tracy I. George, MD²⁹ and Cristina Bulai Livideanu^30*

¹University of Utah, Huntsman Cancer Institute, Salt Lake City, UT
²Département d'hématologie, CEREMAST, Hôpital Necker-Enfants Malades, APHP et Institut Imagine, Paris, France
³Department of Medicine, Division of Allergy and Clinical Immunology, Brigham and Women’s Hospital, Boston, MA
⁴Hospital Universitari Vall d'Hebron, Institut de Recerca (VHIR), Barcelona, Spain
⁵Department of Immunology, Allergology and Rheumatology, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
⁶Charité – Universitätsmedizin Berlin and Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology Hindenburgdamm, Berlin, Germany
⁷University Hospital Aachen, Medical Faculty, RWTH Aachen University, Aachen, Germany
⁸Institute of Mastocytosis Studies of Castilla-La Mancha (CLMast), Virgen del Valle Hospital, Toledo, Spain
⁹Centro Hospitalar Universitário do Porto and ICBAS-School of Medicine and Biomedical Sciences, University of Porto, Porto, Portugal
¹⁰Princess Alexandra Hospital, Woolloongabba, Australia
¹¹AP-HP, Pitié-salpêtrièRe Hospital, University Pierre & Mari, Paris, France
¹²CHU Grenoble Alpes, Grenoble, France
¹³Department of Allergology and Clinical Immunology Section of Clinical Immunology, Internal Medicine, Erasmus MC University Medical Centre, Rotterdam, Netherlands
¹⁴Erasmus Medical Center, Rotterdam, Netherlands
¹⁵University Hospital Ramón y Cajal, IRYCIS, Madrid, Spain
¹⁶Roswell Park Comprehensive Cancer Center, Buffalo, NY
¹⁷Columbia University Medical Center, New York, NY
¹⁸Oslo University Hospital, Rikshospitalet, Oslo, Norway
¹⁹Hematology Institute, University Of Caen Normandie Hospital Center, Caen, France
²⁰University Medical Center Hamburg-Eppendorf, Hamburg, Germany
²¹Department of Molecular Medicine & Department of Hematology and Oncology, University of Pavia, Pavia, Italy
²²Alfred Hospital, Melbourne, Australia
²³University of Alabama at Birmingham, Birmingham, AL
²⁴Blueprint Medicines Corporation, Cambridge, MA
²⁵Blueprint Medicines Corporation, Zug, Switzerland
²⁶The University of Texas MD Anderson Cancer Center, Houston, TX
²⁷St John's Institute of Dermatology, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
²⁸Division of Allergic Diseases, Mayo Clinic, Rochester, MN
²⁹ARUP Laboratories, University of Utah School of Medicine, Salt Lake City, UT
³⁰Department of Dermatology, CEREMAST Toulouse, CHU Toulouse, Toulouse, France

Prithviraj Bose, MD¹, Stephen T. Oh, MD, PhD², Brian Modena, MD^3*, Anthony M. Hunter, MD^4*, Cem Akin, MD, PhD^5*, Mariana Castells, MD, PhD^6*, Michael Manning, MD^7*, Richard Herrscher^8*, Frank Siebenhaar, MD^9*, Daniel J. DeAngelo¹⁰, Tracy I. George, MD¹¹, Benjamin Exter, PharmD^12*, Jenna Zhang, PhD^12*, Amanda Pilla^12*, Hina Jolin, PharmD^12*, Rachael Easton, MD, PhD^12* and Lindsay A.M Rein, MD¹³

¹The University of Texas MD Anderson Cancer Center, Houston, TX
²Department of Medicine, Washington University School of Medicine, Saint Louis, MO
³Modena Allergy & Asthma, San Diego, CA
⁴Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University School of Medicine, Atlanta
⁵University of Michigan, Ann Arbor, MI
⁶Department of Medicine, Division of Allergy and Clinical Immunology, Brigham and Women’s Hospital, Boston, MA
⁷Allergy, Asthma, & Immunology Associates, Scottsdale
⁸AirCare, Plano
⁹Charité - UniversitäTsmedizin Berlin, Berlin, DEU
¹⁰Dana-Farber Cancer Institute, Boston, MA
¹¹ARUP Laboratories, University of Utah School of Medicine, Salt Lake City, UT
¹²Cogent Biosciences, Waltham, MA
¹³Duke University, Durham, NC

Matthieu Groh, MD, MSc^1*, Laurène Fenwarth, MD, MSc^2*, Augustin Boudry^2*, Elise Fournier^3*, Alice Marceau-Renaut, PharmD^4*, Julie Abraham^5*, Marly Barry^6,7*, Philippe Blanche, MD^8*, Quentin Bodard^9*, Thorsten Braun, MD, PhD^10,11, Safia Chebrek^12*, Rafael Daltro De Oliveira, MD^13*, Matthieu Decamp, MD, PhD^14*, Cécile Audrey Durel^15*, Edouard Forcade, MD, PhD^16*, Mathieu Gerfaud-Valentin^17*, Camille Golfier^18*, Clement Gourguechon^19*, Nathalie Grardel^20*, Olivier Kosmider, MD, PhD^21*, Mathilde Labro^22*, Sarah Melboucy Belkhir^23*, Fatiha Merabet^24*, Adrien Michon^25*, Nihal Martis^26*, Cécile Morice^27*, Stephane Moreau^28*, Antoine Néel^29*, Franck E. Nicolini, MD, PhD³⁰, Laurent Pascal^31*, Florence Pasquier, MD, PhD^32*, Andrea Pieragostini^33*, Catherine Roche-Lestienne^34*, Philippe Rousselot, MD, PhD^35*, Anne Thiebaut, MD^36*, Jean-Francois Viallard, MD PhD^37*, Mathieu Wemeau^38*, Claude Preudhomme, PharmD, PhD^39*, Jean-Emmanuel Kahn^40*, Guillaume Lefèvre^41* and Nicolas Duployez, PharmD, PhD^39,42*

¹French National Reference Center for Hypereosinophilic Syndromes (CEREO), Departement of Internal Medicine, Hôpital Foch, Suresnes, France
²Hematology Laboratory, CHU Lille, Lille, France
³University Hospital, Lille, LILLE, FRA
⁴Hematology Laboratory, CHU Lille, Lille Cedex, FRA
⁵CHU DE LIMOGES - HÔPITAL UNIVERSITAIRE DUPUYTREN, Limoges, FRA
⁶CH de Boulogne sur Mer, Boulogne-sur-Mer, TX, FRA
⁷CH Du Docteur Duchenne, Boulogne Sur Mer Cedex, FRA
⁸Department of Internal Medicine, CHU Cochin, Paris, France
⁹CH d'Angoulême, Angoulême, France
¹⁰Clinical Hematology, Avicenne University Hospital, Assistance Publique – Hôpitaux de Paris, Bobigny, France
¹¹Hematology Department, Avicenne Hospital, Bobigny, France
¹²CH d'Avignon, Avignon, FRA
¹³Centre d'Investigation Clinique, Hôpital St Louis, Paris, France
¹⁴CHU Caen, CAEN, FRA
¹⁵Hôpital St Joseph St Luc, Lyon, FRA
¹⁶Service d'Hématologie Clinique et Thérapie Cellulaire, CHU Bordeaux, Pessac, France
¹⁷Hôpital de la Croix Rousse, Lyon, France
¹⁸Hôpital Lyon Sud, Lyon, France
¹⁹Amiens University Hospital, Amiens, France
²⁰CHRU De Lille, LILLE, FRA
²¹Cochin Hospital, Paris, FRA
²²Department of Clinical Research and Innovation, Hôpital Foch, Suresnes, France
²³CH de St Quentin, St Quentin, France
²⁴andre mignot hospital, LE CHESNAY, FRA
²⁵Hôpital Européen Georges Pompidou, Paris, FRA
²⁶CHU De Nice, Nice, FRA
²⁷Dermatology, CHU de Caen, Caen, France
²⁸Hématologie Clinique, CHU Limoges, Limoges, FRA
²⁹CHU Hôtel-Dieu, Nantes, FRA
³⁰Hematology Department, Centre Leon Berard, Lyon, France
³¹Faculté Catholique De Lille, Lille, FRA
³²INSERM U790, PR1, IGR, Villejuif, FRA
³³Hematology, CHU Dijon, Dijon, France
³⁴CHU Lille, Lille, France
³⁵Centre Hospitalier de Verailles, UMR1184, University Versailles Paris-Saclay, Versailles, France
³⁶CHU Grenoble, Grenoble, France
³⁷Service Médecine Interne, Haut-Leveque Hospital, Pessac, France
³⁸CH Valenciennes, Valenciennes, FRA
³⁹Laboratory of Hematology, Centre Hospitalier Universitaire (CHU) Lille, Lille, France
⁴⁰CHU Ambroise Paré, Boulogne Billancourt, FRA
⁴¹Laboratoire d'Immunologie, CHU de Lille, Lille, France
⁴²Hôpital Claude Huriez, Lille, France