Maternal and fetal HLA-G 14 bp gene polymorphism in pregnancy-induced hypertension, preeclampsia, intrauterine growth restricted and normal pregnancies

Chiara Mandò, Paola Pileri, Martina I. Mazzocco, Debora Lattuada, Anna Zolin, Maddalena Plebani, Maddalena Massari, Stefania Calabrese, Silvano Milani, Irene Cetin

Research output: Contribution to journalArticle

Abstract

Objective: Trophoblast expression of Human Leukocyte Antigene-G (HLA-G) is essential for feto-maternal immune tolerance and successful placentation. There is contradicting evidence on the relationship between HLA-G polymorphisms and preeclampsia (PE), intrauterine growth restriction (IUGR) and pregnancy-induced hypertension (PIH). Here, we investigate the association between both maternal and fetal HLA-G 14 bp insertion/deletion polymorphism and obstetrical complications.Methods: Clinical and genetic data of 282 women/fetuses (31 severe PE, 8 mild PE, 46 IUGR, 42 PIH and 155 controls) were analyzed both individually and jointly under a codominant, a dominant and a recessive model.Results: HLA-G 14 bp polymorphism was not associated with obstetrical complications, considering the mother and fetus genotypes both jointly and individually.Conclusions: With this study we filled several gaps occurring in previous studies: we analyzed a very well-defined population of PE, PIH and IUGR pregnancies, considering both fetal and maternal HLA-G 14 bp polymorphism, individually and jointly. Our findings showed that fetal and maternal HLA-G 14 bp genotypes are not associated with increased risk for the development of obstetrical complications, suggesting that this polymorphism has no immuno-modulatory role in the development of PE, PIH or IUGR.

Original languageEnglish
Pages (from-to)1509-1514
Number of pages6
JournalJournal of Maternal-Fetal and Neonatal Medicine
Volume29
Issue number9
DOIs
Publication statusPublished - May 2 2016

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Keywords

  • Feto-maternal immune tolerance
  • genetic risk
  • obstetrical complications
  • pregnancy pathology
  • successful placentation

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Obstetrics and Gynaecology

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