Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA

Leslie Castelo-Soccio

Juvenile Myositis Pathogenesis and Therapeutics Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA

Hanna Kim

Translational Immunology Section, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA

Massimo Gadina

National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA

Pamela L. Schwartzberg

Department of Immunology, Royal Free London Hospitals NHS Foundation Trust, London, UK

Arian Laurence

University College London Hospitals NHS Foundation Trust, London, UK

Arian Laurence

Molecular Immunology and Inflammation Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA

John J. O’Shea

Correspondence to Arian Laurence.