ACE gene I/D polymorphism and severity of SARS-CoV-2 infection in hospitalized patients: a metanalysis
2021
Background
Hypertension and type 2 diabetes increase the risk of severe SARS-CoV-2 infection. On the other hand, homozygous ACE deletion polymorphism (DD) has been associated with these two diseases and risk of acute respiratory distress syndrome.
Aim
To conduct a metanalysis of the association between ACE gene I/D polymorphism (DD, II and DI) and severity of SARS-CoV-2 infection in hospitalized patients.
Methods
We searched PubMed, EMBASE and Google Scholar for studies published between January 2020 and April 2021. We included case-control studies evaluating the association between ACE I/D and severity of SARS-CoV-2 infection in hospitalized patients, were there was sufficient genotype or allele frequency data to calculate IRR (incidence rate ratio) and 95% confidence intervals (CIs).
Results
5 studies were included (mean age 58.5 years and 61% men), combining to a total of 786 patients. Three studies were conducted in Caucasians. Overall, patients who had homozygous co-dominance genotype DD were at 47% higher risk of severe COVID-19 compared with II or ID (IRR: 1.47; 95% CI: 1.15-1.89; p=0.002).
Conclusions
The ACE DD genotype may confer a greater risk of severe COVID-19 in hospitalized patients. Further studies including more diverse ethnic groups are necessary to fully establish this association.
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