Abstract
Background
Genetic risk score (GRS) is more informative to identify the complicated associations between variants of genes and disease. Considering similar pathogenesis and shared genetic predispositions between gestational diabetes mellitus (GDM) and type 2 diabetes/obesity, we conducted this study to explore whether the GRS model integrating variants related to type 2 diabetes/obesity is also associated with GDM risk.
Methods
A population-based case–control study that included 1429 subjects was conducted to investigate the association between the GRS model and GDM risk, which were analyzed employing stratified logistic regression analysis with the adjustment for age, BMI, parity and family history of diabetes.
Results
We have screened 23 SNPs and further filtered six SNPs that were significantly associated with the risk of GDM: four risk SNPs (MTNR1B: rs10830963, rs1387153, rs2166706; MC4R: rs2229616) and two protective SNPs (MTNR1B: rs1447352 and rs4753426). The GRS model with a higher score indicated a higher genetic predisposition to develop GDM, especially in the highest quartile of GRS (all P < 0.001) and the strata of advanced maternal age (all P < 0.001) and obesity (all P = 0.005).
Conclusion
In this study, six SNPs were explored and further identified to be associated with GDM risk, which suggested GRSs including these polymorphisms might participate in facilitating GDM risk. These findings offer the potential to improve our understanding of the etiology of GDM.
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Data availability
The datasets generated during the current study are not publicly available due to local legislation, but are partially available from the corresponding author on reasonable request (Email: j_meili@126.com).
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Acknowledgements
We wish to thank Ying Chen, Department of Epidemiology and biostatistics, Nantong University, for his suggestions on the manuscript.
Funding
This study was supported by the Shanghai Municipal Health Commission (201840297) and supported by Shanghai Municipal Education Commission-Plateau Disciplinary Program for Medical Technology of SUMHS (2018–2020).
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YS and YLJ were responsible for the acquisition of data, analysis and interpretation of the data and drafting of the manuscript. YDL, XFG and GQW participated in the data collection and revision of the manuscript. PZ and SFZ analyzed and interpreted the data and revised the manuscript. LYJ contributed to the interpretation of results and made critical revisions. All authors have reviewed the final version of the manuscript and approved it for publication. LYJ is responsible for the integrity of the data.
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This article belongs to the topical collection Pregnancy and Diabetes, managed by Antonio Secchi and Marina Scavini.
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Shen, Y., Jia, Y., Li, Y. et al. Genetic determinants of gestational diabetes mellitus: a case–control study in two independent populations. Acta Diabetol 57, 843–852 (2020). https://doi.org/10.1007/s00592-020-01485-w
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DOI: https://doi.org/10.1007/s00592-020-01485-w