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Annexin V (ANXV) is a protein with a high affinity for negatively charged phospholipids and shows in vitro a potent anticoagulant activity. It has been suggested that it has a significant role in the prevention of arteriovenous thromboses or fetal loss, or both.1 Increased levels of antibodies against ANXV (aANXV) have been reported in patients with different systemic autoimmune disorders2–4 as well as in women with recurrent fetal loss and pre-eclampsia.5 The presence of aANXV in patients with thromboembolic cerebrovascular disease (CVD), however, has not yet been described. We report on two patients with CVD who had evidently raised levels of IgG aANXV, whereas all the other tested antiphospholipid antibodies (aPL) were negative.
We examined 37 young patients with no evident systemic autoimmune …