CD40LG and Arterial thrombosis: In the stepwise regression analysis, the most important factors related to the “arterial” pattern of recurrence were heart valve disease (OR 7.24, 95% C.I. 2.26–24.6), hypertension (OR 3, 95% C.I. 1.44–6.25), elevated anti-B2-GPI IgM (OR 1.04, 95% C.I. 0.996–1.08), and arterial thrombosis at presentation (OR 1.74 95% C.I. 0.992–3.26), with area under the curve of 0.726.