Close to maximum anti-β2GPI levels were attained in week 3 (1.88 ± 0.43 to 2.00 ± 0.38 vs-0.12 ± 0.01OD, p<0.0001) and maintained in week 4 at the time of thrombosis surgery (1.95 ± 0.40 to 2.23 ± 0.24 vs-0.10 ± 0.01OD, p<0.0001). This evidence concerns the gene APOH and Venous thrombosis.