ground. The frequency of factor V Leiden and of the MTHFR in patients with CVT were 10% (1/10) and 33.3% (3/10), respectively, ie, twice as much as that found in controls (5.8% [15/259] and 17.4% [45/259], respectively). Two patients had the MTHFR genotype and the G20210A PRTH variant simultaneously; 1 carried the PRTH and the factor V Leiden variants. On the whole, 3 patients (33.3%) showed th...

BACKGROUND AND OBJECTIVES The G20210A polymorphism in the prothrombin gene is a common cause of inherited thrombophilia. Scarce information is available about the circumstances of the heralding thrombotic manifestation at different ages. The aim of this study was to determine the risk of spontaneous or secondary venous thromboembolism (VTE) among younger and older carriers of the G20210A prothr...

Background & Aims: Preeclampsia is one of the complications of pregnancy and a major cause of maternal mortality. Since, hypercoagulation is one of the risk factors, defined polymorphisms of V and II coagulation factors (G1691A and G20210A) may increase the risk of the disease. Methods: This investigation was performed on blood samp...

Risk factors for venous thrombosis in adults are the prothrombin G20210A and the factor V (FV) G1691A mutations and hereditary deficiencies of protein C, protein S and antithrombin. However, data are limited on the relevance of these risk factors for thrombosis in children and adolescents. We therefore investigated 261 patients aged 0 to 18 (median 5.7 years, 48% male) with venous thrombosis an...

BACKGROUND AND PURPOSE The role of the factor V Leiden mutation (FVL) and the G20210A mutation of the prothrombin (factor II [FII]) gene for arterial thrombosis is not clear. METHODS We investigated the prevalence of these mutations in 468 patients with an acute stroke or transient ischemic attack (TIA) before the age of 60 years and in a healthy control population individually matched for ag...

BACKGROUND AND PURPOSE Patent foramen ovale (PFO) has been identified as a potential risk factor for cerebrovascular ischemia. Procoagulant mutations may increase the risk and impact the choice of appropriate therapy for secondary prevention. We evaluated the prevalence of the 2 most common genetic risk factors for thromboembolism, factor V Leiden (G1691A) and prothrombin G20210A, in young PFO ...

Objective To provide evidence to support updated guidelines for the management of pregnant women with hereditary thrombophilia in order to reduce the risk of a first venous thromboembolism (VTE) in pregnancy.Design Systematic review and bayesian meta-analysis.Data sources Embase, Medline, Web of Science, Cochrane Library, and Google Scholar from inception through 14 November 2016.Review methods...

BACKGROUND A single base pair mutation in the prothrombin gene has recently been identified that is associated with increased prothrombin levels. Whether this mutation increases the risks of arterial and venous thrombosis among healthy individuals is controversial. METHODS AND RESULTS In a prospective cohort of 14 916 men, we determined the prevalence of the G20210A prothrombin gene variant i...

BACKGROUND Recurrent pregnancy loss (RPL) is a common health problem. The polymorphisms G20210A of prothrombin gene (FII G 20210A), and G 1691A of factor V gene (Factor V Leiden, FVL) are the most extensively studied thrombophilic mutations in association to recurrent miscarriage. OBJECTIVES To determine the frequency of FII G20210A and FVL polymorphisms as well as protein C and protein S def...