Document Detail

The risk of fetal loss in family members of probands with factor V Leiden mutation.
MedLine Citation:
PMID:  10544905     Owner:  NLM     Status:  MEDLINE    
In order to investigate the risk of fetal loss in carriers of factor V Leiden who are family members of probands with this mutation, we performed a retrospective cohort study including 109 women who had been pregnant at least once and were family members of 61 probands with venous thromboembolism and a single identified factor V Leiden mutation. The rate of pregnancies ending in unexplained fetal loss, early miscarriage, late miscarriage or stillbirth in women with the factor V Leiden was compared with that of women with normal genotype. In the 65 women who were carriers of factor V Leiden 31 of the 191 pregnancies (16.2% per pregnancy) resulted in unexplained fetal loss, as compared to 13 of the 121 pregnancies (10.7% per pregnancy) in the 44 non-carriers (relative risk, 1.5; 95% CI, 0.8-3.2). After the first trimester of pregnancy, 25 pregnancies (13.1% per pregnancy) among carriers of factor V Leiden ended in fetal loss, as compared to 7 (5.8% per pregnancy) among females with normal genotype (relative risk, 2.3; 95% CI, 1.01 to 5.1). We conclude that carriers of factor V Leiden who are family members of probands with this mutation have a statistically significant and clinically important risk of late miscarriage or stillbirth. Studies addressing the benefit-to-risk ratio of adopting routinary thromboprophylactic measures following the first trimester of pregnancy in these women are strongly indicated.
D Tormene; P Simioni; P Prandoni; S Luni; B Innella; P Sabbion; A Girolami
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Thrombosis and haemostasis     Volume:  82     ISSN:  0340-6245     ISO Abbreviation:  Thromb. Haemost.     Publication Date:  1999 Oct 
Date Detail:
Created Date:  1999-11-30     Completed Date:  1999-11-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7608063     Medline TA:  Thromb Haemost     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  1237-9     Citation Subset:  IM    
Department of Medical and Surgical Sciences, University of Padua Medical School, Italy.
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MeSH Terms
Cohort Studies
Embryo Loss / genetics*
Factor V / genetics*
Fetal Resorption / genetics*
Retrospective Studies
Risk Factors
Reg. No./Substance:
0/factor V Leiden; 9001-24-5/Factor V

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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