IL17A and psoriasis: On the other hand, evaluation of circulating levels of miR-1910-3p (predicted to target the IL-17A mRNA) and miR-4649-3p, miR-4296, miR-6867-5p (predicted to target the FOXP3 mRNA that regulates the functions of Treg cells), which had not been studied in patients with psoriasis before, are the strengths of the current study.