Abstract
Purpose
Genetic factors play important role in the severity of the COVID-19 infection since SARS-CoV-2 binds to the ACE2 receptor on the surface of host cells. ACE2 polymorphisms that may influence the expression of ACE2 can alter patients’ susceptibility to COVID-19 infection or increase the severity of the disease. This study aimed to investigate the association between ACE2 rs2106809 polymorphism and the severity of the COVID-19 infection.
Methods
In this cross-sectional study, ACE2 rs2106809 polymorphism was assessed in 142 COVID-19 patients. The disease was confirmed according to clinical symptoms, imaging, and laboratory findings. The severity of the disease was graded as severe versus non-severe based on the CDC. Genomic DNA was extracted from the whole blood and PCR- RFLP was performed to genotype the ACE2-rs2106809 with specific primers and Taq1 restriction enzyme.
Results
G/G genotype was significantly associated with COVID-19 severity (44.4% in severe vs. 17.5% in non-severe, OR: 4.1; 95%CI: 1.8–9.5, p = 0.0007). Patients with the G/G genotype need more mechanical ventilation (p = 0.021). ACE2 expression in patients carrying the A/G genotype was higher in the severe compared to the non-severe form of the disease (2.99 ± 0.99 vs. 2.21 ± 1.1), but it was not statistically significant (p = 0.9).
Conclusion
The G allele and G/G genotype of ACE2 rs2106809 is associated with more severe COVID-19 and adverse disease outcomes.
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Data Availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
Code Availability
Not applicable.
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Acknowledgements
We would like to thank all patients and their families and also the staff of Imam Hospital for their cooperation in the collecting of samples and information.
Funding
This study was funded by Mazandaran University of Medical Sciences [Grant No.7758].
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All authors contributed to the study’s conception and design. Hamideh Mohammadi contributed to data collection and wrote the manuscript. Elaheh Mohammadali and Mina Khasayesi carried out the assays, contributed to data collection, and wrote the manuscript. Alireza Rafiei contributed to data analysis and revise the manuscript for important intellectual content. Zahra Kashi supervised the work and revised the manuscript. Narges Mirzaei Ilali provided the samples and contributed to data collection. Zahra Hosseini-khah designed and conducted the research. All authors read and approved the final manuscript.
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The study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the ethical standards of the Mazandaran University of Medical Sciences (Ethics Committee Code: IR.MAZUMS.REC.1399.7758).
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Mohammadi-Berenjestanaki, H., Mohammadali, E., Khasayesi, M. et al. Association between angiotensin-converting enzyme-2 gene polymorphism (rs2106809) with severity and outcome of COVID-19 infection. Mol Biol Rep 50, 6669–6679 (2023). https://doi.org/10.1007/s11033-023-08493-3
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DOI: https://doi.org/10.1007/s11033-023-08493-3