Interleukin-1beta -511T>C genetic variant contributes to recurrent pregnancy loss risk and peripheral natural killer cell proportion.
Fertil Steril 2014;
102:206-212.e5. [PMID:
24784935 DOI:
10.1016/j.fertnstert.2014.03.037]
[Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 03/05/2014] [Accepted: 03/14/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVE
To identify whether interleukin gene polymorphisms are risk factors for idiopathic recurrent pregnancy loss (RPL) in Korean women.
DESIGN
Case-control study.
SETTING
Hospital-based study.
PATIENT(S)
A cohort of 385 idiopathic RPL patients and 232 controls with Korean ethnicity.
INTERVENTION(S)
None.
MAIN OUTCOME MEASURE(S)
Genotyping was assessed with a polymerase chain reaction-restriction fragment length polymorphism assay. We examined polymorphisms in three interleukin (IL) genes: IL-1β, IL-4, and IL-10.
RESULT(S)
The IL-1β -511T>C polymorphism was associated with RPL (-511TT vs. -511CC: adjusted odds ratio 1.826; 95% confidence interval 1.130-2.953). Allelic gene-gene interaction analysis revealed that the T/B2/G (IL-1β/IL-4/IL-10) allele combination was only detected in the RPL group (adjusted odds ratio 20.046; 95% confidence interval 1.188-338.204). The proportion of peripheral natural killer cells was higher in patients with the IL-1β -511C allele compared with the -511T allele.
CONCLUSION(S)
According to these results, IL-1β -511T>C may be a predisposing factor to RPL susceptibility. However, the mechanism underlying the function of IL-1β -511T>C in RPL remains to be determined, and further studies are needed to improve understanding of the roles of IL-1β -511T>C, using a larger and more heterogeneous cohort.
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