1. Department of Dermatology Hôpital Saint Louis Assistance Publique des Hôpitaux de Paris (AP‐HP) Paris France
2. Centre de référence maladies rares MAGEC Nord Site Saint Louis Hôpital Saint Louis Paris France
3. INSERM UMR 1163 Laboratory of genetic skin diseases Institut Imagine Paris Université Paris France
4. Department of Pathology Hôpital Saint Louis AP‐HP Paris France
5. Department of Dermatology Hôpital Bichat AP‐HP Paris France
6. Department of Genetics Hôpital Necker‐enfants malades AP‐HP Paris France