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Revista médica de Chile

versión impresa ISSN 0034-9887

Resumen

PALOMO G, Iván et al. Factor V Leiden and prothrombin G20210A among Chilean patients with venous and arterial thrombosis. Rev. méd. Chile [online]. 2005, vol.133, n.12, pp.1425-1433. ISSN 0034-9887.  http://dx.doi.org/10.4067/S0034-98872005001200003.

Background: Factor V Leiden and G20210A mutation of prothrombin gene are two important genetic polymorphisms associated with an increased risk for thrombosis. Aim: To establish the prevalence of factor V Leiden and prothrombin G20210A mutation in the Chilean population and their association to venous and arterial thromboembolism. Material and methods: A case-control study was conducted where 149 patients with thrombosis (87 with arterial and 62 with venous thrombosis) confirmed by CAT-scan, electrocardiogram and cardiac enzymes or Doppler depending on the case, and 160 healthy blood donors were genetically analyzed for the presence of both polymorphisms. Results: Factor V Leiden mutation was found in 5.4% of patients and in 1.3% of healthy controls (p=0.04). Heterozygosity for G20210A prothrombin mutation was found in 5.4% of patients and in 2.5% of the control group (p=NS). When arterial and venous thrombosis were considered as separate entities, 4.6% of patients with arterial thrombosis and 6.5% with venous thrombosis presented factor V Leiden (p=NS). Likewise, 8.1% of patients with venous thrombosis and 3.5% of patients with arterial thrombosis had G20210A prothrombin mutation (p=NS). Conclusions: In non selected consecutive Chilean patients with arterial and venous thrombosis the frequency of factor V Leiden and prothrombin G20210A is less than we could expect from their prevalence in the general population (Rev Méd Chile 2005; 133: 1425-33)

Palabras clave : Factor V; deficiency; Prothrombin; Thromboembolism; Venous thrombosis.

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