Affiliation: | 1. Department of Dermatology and Pediatric Dermatology, National Reference Center for Rare Skin disorders, H?pital Saint‐André, 1 rue Jean Burguet, Bordeaux, Cedex, 33075 France;2. INSERM U1035, BMGIC, Immuno‐dermatology ATIP‐AVENIR, University of Bordeaux, Bordeaux, France;3. Julien Seneschal.;4. E‐mail: |