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  • Title: Factor V Leiden in Greek thrombophilic patients: relationship with activated protein C resistance test and levels of thrombin-antithrombin complex and prothrombin fragment 1 + 2.
    Author: Lambropoulos AF, Foka Z, Makris M, Daly M, Kotsis A, Makris PE.
    Journal: Blood Coagul Fibrinolysis; 1997 Nov; 8(8):485-9. PubMed ID: 9491265.
    Abstract:
    We studied 172 Greek patients (72 men aged 44.0 +/- 16.7 years and 100 women aged 46.5 +/- 14.1 years) with an unexplained thrombophilic tendency. One hundred and four apparently healthy persons (63 men aged 34.2 +/- 10.0 years and 41 women aged 37.1 +/- 13.3 years) were included as a control group. We performed the activated protein C resistance (APC-r) test using a clotting test (Chromogenix kit), detection of factor V Leiden using polymerase chain reaction (PCR)-restriction fragment length polymorphisms and measurement of thrombin-antithrombin complexes (TAT) and prothrombin fragment 1 + 2 (F1 + 2) levels with an immunoenzymatic assay. The normal range for the APC-r test (> 2.12) was determined from the controls. The factor V Leiden mutation was found in 31.9% of all the patients tested, in 28.1% of the unrelated patients with documented thrombophilic tendency of unknown origin and in 4.8% of the healthy controls. The APC-r test had a sensitivity of 0.42 and a specificity of 0.91 for the detection of factor V Leiden. Furthermore, we found no significant difference in levels of TAT and F1 + 2 between patients with and without the mutation and there was no correlation between aPC-r values and levels of TAT and F1 + 2.
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