1. Reference Centre for Rare Skin Diseases, Department of Dermatology Larrey Hospital, CHU Toulouse Toulouse France
2. Infinity, University of Toulouse, CNRS, INSERM Université Paul Sabatier Toulouse France
3. Laboratoire de Biologie Cellulaire et Cytologie, Institut Fédératif de Biologie Hôpital Purpan, CHU Toulouse Toulouse France
4. Institute of Human Genetics University Medical Center Freiburg Germany
5. Dermatology Unit and Genodermatosis Unit, Genetics and Rare Diseases Research Division, Bambino Gesù Children's Hospital IRCCS Rome Italy
6. Department of Dermatology IRCCS Azienda Ospedaliero‐Universitaria di Bologna Bologna Italy
7. Department of Dermatology Tel Aviv Sourasky Medical Center Tel Aviv Israel
8. Department of Dermatology and Allergy, University Hospital LMU Munich Munich Germany
9. Department of Dermatology University Hospital Center of Marseille Marseille France
10. Department of Dermatology University Hospital Center of Angers Angers France
11. Department of Dermatology Hospital Universitari Son Espases Palma Spain
12. Pediatric Hepatology and Reference Centre for Inborn Error of Metabolism Children Hospital Toulouse France
13. Department of Pathology and Reference Center for Genodermatoses and Rare Skin Diseases (MAGEC) Necker‐ Enfants Malades University Hospital Paris France
14. Department of Dermatology, Venereology and Allergy Medical University of Innsbruck and Karl Landsteiner Institute for Paediatric Dermatology and Rare Diseases Innsbruck Austria
15. Department of Dermatology University Hospital of Muenster Muenster Germany
16. Department of Dermatology Saint‐Louis Hospital Paris France
17. Department of General Paediatrics Robert‐Debré Hospital Paris France
18. Department of Dermatology Royal London Hospital, Barts Health NHS Trust ERN‐Skin London UK
19. Department of Dermatology, MAGEC, Groupe Hospitalier Paris Seine‐Saint‐Denis AP‐HP and INSERM UMR1125 Bobigny France
20. Department of Dermatology, Groupe Hospitalier Paris Seine‐Saint‐Denis AP‐HP and INSERM UMR1125 Bobigny France