Fas (TNFRSF6) gene polymorphism in pregnant women with hemolysis, elevated liver enzymes, and low platelets and in their neonates

István Sziller, Petronella Hupuczi, Neil Normand, Amrita Halmos, Zoltán Papp, Steven S. Witkin

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

OBJECTIVE: To estimate whether an A>G polymorphism at position -670 in the gene coding for Fas (gene symbol TNFRSF6) is associated with hemolysis, elevated liver enzymes, low platelets (HELLP) syndrome. METHODS: In a retrospective study, buccal swabs from 81 women with the complete form of HELLP syndrome and 83 normotensive control women with uncomplicated full-term pregnancy, and 110 of their neonates, were analyzed for the presence of the TNFRSF6-670 polymorphism. Investigators were blinded to clinical outcomes. RESULTS: Pregnant women heterozygous for the TNFRSF6-670 genotype were more likely than those homozygous for TNFRSF6-670*A allele to have HELLP syndrome (P = .01; odds ratio 2.7, 95% confidence interval 1.2-5.9). Moreover, patients with homozygous carriage of the TNFRSF6-670*G allele were more likely than those homozygous for the wild type of the Fas gene (TNFRSF6-670*A/A) to have HELLP syndrome (P = .006; odds ratio 4.0, 95% confidence interval 1.7-9.8). In contrast, TNFRSF6-670 genotype distribution of neonates born to mothers with HELLP syndrome was not statistically different from that found in neonates born to healthy pregnant women (P = .4). In patients with HELLP syndrome, no association between TNFRSF6 genotype distribution and severity of hemolysis, platelet counts or liver enzymes levels was noted. CONCLUSION: A single A>G nucleotide substitution at position -670 in the maternal but not neonatal TNFRSF6 gene coding for Fas is associated with a higher risk for HELLP syndrome.

Original languageEnglish
Pages (from-to)582-587
Number of pages6
JournalObstetrics and Gynecology
Volume107
Issue number3
DOIs
Publication statusPublished - Mar 1 2006

ASJC Scopus subject areas

  • Obstetrics and Gynaecology

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