An A > G polymorphism at position - 670 in the Fas (TNFRSF6) gene in pregnant women with pre-eclampsia and intrauterine growth restriction

Istvan Sziller, Daniel Nguyen, Amrita Halmos, Petronella Hupuczi, Zoltan Papp, Steven S. Witkin

Research output: Article

18 Citations (Scopus)


Fas-mediated apoptosis of maternal lymphocytes during pregnancy has been postulated to prevent the development of pre-eclampsia. A single adenine (A) to guanine (G) polymorphism at position -670 in the Fas gene (TNFRSF6) results in decreased Fas synthesis. The association between this polymorphism and pre-eclampsia in Hungarian women was investigated. In a case-control study, buccal swabs from 38 pregnant women with pre-eclampsia and 89 normotensive controls were analysed for the TNFRSF6-670 polymorphism. Investigators were blinded to clinical outcomes. Maternal homozygosity for the TNFRSF6-670*A occurred in 33 (37.1%) normotensive pregnant women as compared to only 5 (16.1%) of 31 pre-eclamptic pregnant women who delivered at <37 weeks gestation (P = 0.04). The carriage rate of the TNFRSF6-670*G variant was also higher among these patients (59.7%) than among normotensive controls (42.1%; P = 0.01). There was no relation between the polymorphism and the pre-eclampsia diagnosed at ≥37 weeks. Among pre-eclamptic patients with an intrauterine growth restriction (IUGR) neonate, eight (57.2%) were TNFRSF6-670*G homozygous as opposed to 3 (17.6%) of 17 pre-eclamptics who did not have IUGR (P = 0.03) and 19 (21.3%) normotensive controls (P = 0.008). Carriage of the TNFRSF6-670 polymorphism in the neonate was not associated with pre-eclampsia or IUGR. Maternal possession of the TNFRSF6-670*G increases the risk for pre-eclampsia and pre-eclampsia-associated IUGR in women who deliver at <37 weeks.

Original languageEnglish
Pages (from-to)207-210
Number of pages4
JournalMolecular Human Reproduction
Issue number3
Publication statusPublished - márc. 1 2005

ASJC Scopus subject areas

  • Reproductive Medicine
  • Embryology
  • Molecular Biology
  • Genetics
  • Obstetrics and Gynaecology
  • Developmental Biology
  • Cell Biology

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