For oxLDL-IgM except the immunothrombocytopenia subgroup (4), the levels of oxLDL-IgM titer are significantly higher than that in the hypertension group, while the levels of serum oxLDL-IgG in the seven subgroups (from 1 to 7 shown in Table 2) of hematological diseases are lower than that in the hypertension group (P < 0.005). The gene discussed is CD40LG; the disease is hypertensive disorder.