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Immunogenetic contributions to recurrent pregnancy loss

  • Frances Grimstad
  • Sacha Krieg
Review

Abstract

While sporadic pregnancy loss is common, occurring in 15 % of pregnancies, recurrent pregnancy loss (RPL) impacts approximately 5 % of couples. Though multiple causes are known (including structural, hormonal, infectious, autoimmune, and thrombophilic causes), after evaluation, roughly half of all cases remain unexplained. The idiopathic RPL cases pose a challenging therapeutic dilemma in addition to incurring much physical and emotional morbidity. Immunogenetic causes have been postulated to contribute to these cases of RPL. Natural Killer cell, T cell expression pattern changes in the endometrium have both been shown in patients with RPL. Human leukocyte antigen (HLA) and cytokine allelic variations have also been studied as etiologies for RPL. Some of the results have been promising, however the studies are small and have not yet put forth outcomes that would change our current diagnosis and management of RPL. Larger database studies are needed with stricter control criteria before reasonable conclusions can be drawn.

Keywords

Immunogenetics Recurrent pregnancy loss T regulatory cell Human leukocyte antigens HY-Antibodies 

Notes

Compliance with ethical standards

Funding sources

None.

Conflict of interest

The authors declare that there are no conflicts of interest.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Department of Obstetrics and GynecologyUniversity of KansasKansas CityUSA
  2. 2.Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and GynecologyOregon Health Sciences UniversityPortlandUSA

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