Similar features (high expression of CD161, expression of CCR6 and production of IL-17) were found in γδ T cells enriched in the cerebrospinal fluid (CSF) of pwMS (64); γδ T cells producing IL-17 have also been found to be pathogenic in another autoimmune-mediated disease, psoriasis, again in response to IL-23 (65). This evidence concerns the gene IL17A and psoriasis.