Relationship Between IL-10 Single Nucleotide Polymorphisms (rs1800871, rs1800872, and rs1800896) and the Severity of COVID-19

<b><i>Background:</i></b> Interleukin-10 (IL-10) is an anti-inflammatory cytokine whose levels are elevated in patients with severe COVID-19. IL-10 polymorphisms may play a role in increasing IL-10 levels and the severity of COVID-19. This study aimed to investigate the relationship between IL-10 single nucleotide polymorphisms (SNPs) (rs1800896 [-1082 C < T], rs1800871 [-819 A > G], and rs1800872 [-592 T > G]) and the severity of COVID-19 in patients from Kermanshah Province, Iran. <b><i>Methods:</i></b> A total of 150 patients with mild COVID-19 (84 men and 66 women aged 40.1 ± 12.44 years) and 143 patients with severe COVID-19 (76 men and 67 women aged 61.04 ± 15.65 years) participated in this study. Blood samples were collected from the patients, DNA was extracted, and the genotype of each SNPs was determined using the polymerase chain reaction-restriction fragment length polymorphism method. <b><i>Result:</i></b> The results of this study did not show a significant relationship between the genotypes of the three studied SNPs and the severity of COVID-19 (<i>p</i> > 0.05). <b><i>Conclusion:</i></b> According to our findings, these SNPs were not associated with COVID-19 severity in patients in Kermanshah.