(National Research Centre for Haematology, Moscow, Russia)

(Hospital Universitario del Sureste, Madrid, Spain | Universidad Complutense de Madrid, Madrid, Spain)

(2nd Department of Dermatology and Venereal Diseases, Attikon General University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece)

(Medical University of Vienna, Vienna, Austria)

(Northwestern University Feinberg School of Medicine, Chicago, IL, United States)

(Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, PA, United States)

(Laboratory of Biological Chemistry, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece)

(4SC AG, Martinsried, Germany)

(National Center of Rare Diseases- Cutaneous Lymphoma, Second Department of Dermatology and Venereal Diseases, Attikon University General Hospital, National and Kapodistrian University of Athens, Athens, Greece)

(National Center of Rare Disease- Cutaneous Lymphoma, Second Department of Dermatology and Venereal Diseases, Attikon University General Hospital, National and Kapodistrian University of Athens, Athens, Greece)

(Center for Biotechnology (CeBiTec), Bielefeld University, Bielefeld, Germany)

(Centre de Recherche en Cancérologie de Marseille, INSERM U1068, Centre National de la Recherche Scientifique U7258, Aix Marseille Université, Institut Paoli-Calmettes, Marseille, France | Service de dermatologie, Hôpital Nord, APHM, Aix Marseille Université, Marseille, France)

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

(Dept of Dermatology, Leiden University Medical Center, Leiden, Netherlands)

(Institute of Pathology, University of Wuerzburg, Wuerzburg, Germany)

(Pathology Department, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz University Hospital, Madrid, Spain | Centre for Biomedical Network Research on Cancer (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain)