Low prevalence of antiannexin A5 antibodies in unprovoked venous thrombosis.

Prevalence of these antibodies in unprovoked venous thrombosis is comparable with frequencies reported in healthy individuals and is far lower than the prevalence in women with pregnancy morbidity. This may indicate lack of association with venous thrombosis, however, adequately powered case-control studies will be required to resolve this and prevalence data from this study will assist in the design of such studies.