- The levels of IL-17A and of the cytokines involved in Th17 cell commitment are increased in patients with chronic immune thrombocytopenia. Rocha, A.M., Souza, C., Rocha, G.A., de Melo, F.F., Clementino, N.C., Marino, M.C., Bozzi, A., Silva, M.L., Martins Filho, O.A., Queiroz, D.M. Haematologica (2011)