(Division of Dermatology, City of Hope Comprehensive Cancer Center, Duarte, CA, United States)

(Division of Dermatology, City of Hope Comprehensive Cancer Center, Duarte, CA, United States)

(Columbia University, Columbia University Irving Medical Center, New York, NY, United States)

(Hôpital Saint Louis, APHP, Inserm U976, Université de Paris, Paris, France)

(Unidad de Gestión Clínica Dermatología M.Q. y Venereología, Hospital Universitario Puerta del Mar, Cádiz, Spain)

(Univ. Bordeaux, INSERM, BaRITOn, U1053, Bordeaux, France | Department of Dermatology, CHU Bordeaux, Bordeaux, France)

(INSERM UMR-1160, Institut Universitaire d'Hématologie, Paris, France | University of Paris Diderot, Sorbonne Paris Cité, Paris, France | Laboratoire d'Immunologie-Histocompatibilité, Hôpital Saint Louis, AP-HP, Paris, France)

(Department of Dermatology, Saint-Louis Hospital, AP-HP, University of Paris, Paris, France)

(Dermatology Department, Bordeaux University Hospital, Bordeaux, France | INSERM U1053, University of Bordeaux, Team 3 oncogenesis of cutaneous lymphomas, Bordeaux, France)

(Dermatology, Saint-Louis Hospital, Paris, France)

(Department of Dermatology, Aix Marseille University, APHM, North Hospital, Marseille, France)

(Dermatology, Hospital Clinic de Barcelona, Barcelona, Spain)

(Department of Dermatology and Skin Cancers, Hôpital de la Timone, Aix-Marseille Université, Marseille, France)

(2nd Department of Dermatology and Venereology, School of Medicine, Aristotle University of Thessaloniki, “Papageorgiou” General Hospital, Thessaloniki, Greece)

(The Christie NHS Foundation Trust, Manchester, United Kingdom)

(University Hospital of Dermatology, Minden, Germany)

(Department of Dermatology, Hospital Universitario 12 de Octubre, Madrid, Spain)

(National Research Centre for Haematology, Moscow, Russia)

(Department of Dermatology, University Hospital Lausanne and Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland)

(University Hospitals of Birmingham (UHB), Birmingham, United Kingdom)

(Hospital Italiano de Buenos Aires, Buenos Aires, Argentina)

(National Research Centre for Haematology, Moscow, Russia)

(Department of Dermatology and Venereology, University Hospital CHUV, Lausanne, Switzerland)

(University Clinic for Dermatology, Johannes Wesling Medical Centre, UKRUB, University of Bochum, Minden, Germany)

(Guy’s and St Thomas NHS Foundation Trust, London, United Kingdom)

(Department of Hematology and Bone Marrow Transplantation, Centro Hospitalar Universitário Lisboa Norte, Lisbon, Portugal)

(University Institute of Pathology, Lausanne University Hospital (CHUV), Lausanne, Switzerland | Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland)

(Department of Dermatology, Valence Hospital, Valence, France)

(Dermatology Department, Bordeaux University Hospital, Bordeaux, France | INSERM U1053, Bordeaux research in Translational Oncology, Team 3 oncogenesis of cutaneous lymphomas, Univ. Bordeaux, Bordeaux, France)

(Dermatology Department, Saint-Louis Hospital, AP-HP, Paris, France | INSERM U976, Human Immunology Pathophysiology and Immune Therapies, Paris, France | Université de Paris, Paris, France)