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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Acquired and inherited thrombophilia in women with unexplained fetal losses.

OBJECTIVE: The purpose of this study was to investigate the possible role of inherited and acquired thrombophilia in women with unexplained abortions and intrauterine fetal death. STUDY DESIGN: We included 75 women with >/=1 unexplained fetal loss, and 75 control subjects with at least 1 healthy term infant and without gestational complications. All of these women were tested for mutations of factor V Leiden, methylenetetrahydrofolate reductase, and prothrombin gene; deficiencies of antithrombin-III, protein C, and protein S; and the presence of antiphospholipid antibodies and fasting homocysteine concentration. A placental histologic study was also carried out. RESULTS: Thirty-five percent of the 75 patients had thrombophilia (control subjects, 16%; P =.008; odds ratio, 2.78). This prevalence was more prominent in second and third trimesters (P =.0002; odds ratio, 6.3), and the presence of combined genetic defects was associated with intrauterine fetal death (P =.04; odds ratio, 12; 95% CI, 1.44-102). When we analyzed the overall gestations of the patients, we observed an increase of intrauterine fetal death in patients with thrombophilia (P =.01) and early pregnancy loss in patients without thrombophilia (P =.02). The analysis of the correlation between extensive placental infarctions and thrombophilic defects rendered values in the boundaries of significance (P =.05). CONCLUSION: The significant high prevalence of biologic causes in patients with late fetal loss suggests that a study of thrombophilia should be carried out, together with an assessment of a preventive treatment.[1]


  1. Acquired and inherited thrombophilia in women with unexplained fetal losses. Alonso, A., Soto, I., Urgellés, M.F., Corte, J.R., Rodríguez, M.J., Pinto, C.R. Am. J. Obstet. Gynecol. (2002) [Pubmed]
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