IL17A and autoimmune thrombocytopenic purpura: Our results showed that newly diagnosed ITP patients had notably higher percentage of Th 17 cells and IL-17 serum levels in comparison to persistent and chronic ITP patients (2.05, 1.75, and 1.53%, respectively, p < 0.0001 for T helper cells and 554.3, 259.9, and 158.6 pg/ml, respectively, p < 0.001 for IL-17).