Causal Association Between Female Infertility and Circulating Immune Cells: A Bidirectional Mendelian Randomization
Xuan Zhou1, Yu-Xuan Fang1, Li-Ya Ma1
1Henan University of Chinese Medicine, Zhengzhou, China.
American Journal of Reproductive Immunology (New York, N.Y. : 1989)
|February 25, 2025
Summary
This study used Mendelian randomization to find a causal link between specific immune cells and female infertility (FI). These findings offer new insights into FI
Area of Science:
- Immunology
- Genetics
- Reproductive Medicine
Background:
- Female infertility (FI) is a significant global health concern with incompletely understood causes.
- Immunologic factors are increasingly recognized as playing a crucial role in the etiology of FI.
Purpose of the Study:
- To investigate the potential causal association between various immune cells and the risk of developing female infertility.
- To leverage Mendelian randomization (MR) analysis for elucidating genetic links between immunophenotypes and FI.
Main Methods:
- Employed a two-sample Mendelian randomization (MR) approach using genetic variants as instrumental variables.
- Analyzed the causal correlation between 731 peripheral blood lymphocyte immunophenotypes and FI.
- Utilized weighted median estimator (WME) and inverse variance weighted (IVW) methods, alongside sensitivity analyses to ensure data reliability and minimize bias.
Main Results:
- Identified four immune cell phenotypes significantly associated with FI risk.
- Specific associations include CD33dim HLA DR+CD11b+ (OR: 0.98), CD39+CD4+AC (OR: 1.03), CD27 on IgD-CD38bright (OR: 0.93), and CD28 on resting Treg (OR: 0.91).
- Sensitivity analyses confirmed the robustness and reliability of these findings.
Conclusions:
- Provided evidence for a causal relationship between specific immune cells and female infertility.
- Contributes novel literature to the understanding of FI pathogenesis.
- Establishes a foundation for exploring immunomodulatory therapeutic strategies for FI.
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