Exploration of the Cellular and Molecular Mechanisms in Patients Receiving Biotherapies Targeting the IL-23/IL-17 Axis in Cutaneous Psoriasis

Blood will be collected in tubes heparinés BD (Vacutainer), homogenised, and immediately transported at room temperature to Institut Pasteur to be further processed

collection of socio-demographic, clinical and biological data.

skin biopsies of 4 mm in diameter. These samples will not be taken on the face or in an area of skin folds