1. Department of Dermatology Saint‐Louis Hospital, APHP Paris France
2. French Cutaneous Lymphomas Study Group Paris France
3. INSERM U976 Institut de Recherche Saint‐Louis Paris France
4. Université de Paris Paris France
5. Department of Pathology Saint‐Louis Hospital, APHP Paris France
6. Laboratory of Hematology and EA3518 Saint‐Louis Hospital, APHP Paris France
7. Laboratory of Hematology and INSERM U1160 Saint‐Louis Hospital, APHP Paris France
8. Department of Pharmacology and Tumor Genomics Saint‐Louis Hospital Paris France
9. Department of Dermatology Henri Mondor Hospital, APHP Créteil France
10. Univ Paris Est Créteil Epiderme Créteil France
11. Department of Dermatology Centre University Hospital of Angers Angers France