1. Department of Pathology University Hospital of Tours Tours France
2. Platform of Solid Tumor Molecular Genetics University Hospital Center of Tours Tours France
3. CARADERM, French Network of Rare Cutaneous Cancer France
4. Department of Pathology University Hospital of Nimes, University of Nimes Nimes France
5. Department of Pathology University Hospital of Bordeaux Bordeaux France
6. Department of Pathology APHM, Timone University Hospital Marseille France
7. Aix‐Marseille University, INSERM U1251, MMG Marseille France
8. Department of Pathology Hospital Saint‐Louis, AP‐HP, Université Paris Cité, INSERM U976 Paris France
9. Biologie des Infections à Polyomavirus Team UMR1282 INRAE, University of Tours Tours France