IL17A and autoimmune thrombocytopenic purpura: IL17 expression was downregulated (11.98 ± 0.29 vs. 5.87 ± 0.46) (Fig. 4D,E,F), while CD4+ CD25+ Foxp3+ Treg cells were upregulated in miR-641-blocked ITP patient T cells (10.48 ± 0.71 VS.