These features included the expression of IFN-γ, the expression of IL-4, the expression of IL-10, the expression of IL-17A, the expression of IL-22, the expression of TGF-β, the count of PLT and the length of time of ITP (Table 2).Then, logistic regression also performed for further verification. The gene discussed is IL22; the disease is autoimmune thrombocytopenic purpura.