IL17A and autoimmune thrombocytopenic purpura: Increased plasma IL-17A and decreased IL-4, IL-10 and TGF-β1 levels in ITP patients. miR-155 levels were negatively correlated with platelet counts, SOCS1 mRNA levels, and the plasma levels of IL-4, IL-10 and TGF-β1, but positively correlated with plasma IL-17A levels.