We then analysed the correlation between the cytotoxicity and the platelet desialylation level in the cytotoxic group, and found that CD8+ T cell-mediated platelet lysis/apoptosis was not correlated with the MFI of RCA-I of fresh-isolated platelets in ITP patients (Fig. 2c,d). This evidence concerns the gene CD8A and autoimmune thrombocytopenic purpura.