Moreover, the expression level of IL-6 exhibited a significant increase in both CD (mean ± SD: 19.16 ± 8.11) and COVID-19 patients (mean ± SD: 15.42 ± 11.23) in comparison to controls (mean ± SD: 2.81 ± 1.02), (p < 0.0001 for both of them), but there was no significant difference in IL-6 level between these two groups of patients (Fig. 2). The gene discussed is IL6; the disease is COVID-19.