From the scatter plot analysis comparing the performance for the detection of arterial thrombosis between anti-β2GPI/HLA-DR antibody and aβ2GPI IgG antibody or aCL IgG antibody (Fig. 2C, D), about 30% of patients who were positive for anti-β2GPI/HLA-DR antibody but aβ2GPI-negative or aCL-negative had histories of arterial thrombosis. This evidence concerns the gene APOH and Arterial thrombosis.