Fletcher Fletcher JM JM Moran Moran B B Petrasca Petrasca A A Smith Smith CM CM IL-17 in inflammatory skin diseases psoriasis and hidradenitis suppurativa IL-17 in inflammatory skin diseases psoriasis and hidradenitis suppurativa Clin Exp Immunol Clin Exp Immunol 2020 2020 201 201 121 121 134 134 10.1111/cei.13449 10.1111/cei.13449 supplied-pmid 32379344? This evidence concerns the gene IL17A and hidradenitis suppurativa.