As shown in Fig. 3 and Table 3, increased levels of platelet autoantibodies, including anti-GPIX, GPIb, GPIIIa, GPIIb and P-selectin, were found in ITP patients compared to non-ITP patients and healthy controls (All p < 0.01). This evidence concerns the gene ITGA2B and autoimmune thrombocytopenic purpura.