In multivariate analysis with logistic regression analysis, risk factors for COVID-19 mortality in children were IL-6 levels with OR 18.570 (95% CI 5.320–64.803), ARDS OR 10.177, (95% CI 1.310–9.040) and AKI with OR 3.220 (95% CI 1.070–10.362) (Table 3). The gene discussed is IL6; the disease is acute kidney injury.