Multivariate Cox model analyses showed that higher levels of IL-6, IL-8, and IL-10 remained significantly correlated with shorter survival time (IL-6: HR 26.22, P = 0.001; IL-8: HR 3.11, P = 0.004; IL-10: HR 2.94, P < 0.001), and Ts cell count (/μL) was negatively associated with COVID-19-related death (HR 0.98, P = 0.049) (Figure 6(b)), indicating that IL-6, IL-8, and IL-10 levels and Ts cell count could be the independent risk factors to predict the possibility of death of COVID-19. This evidence concerns the gene IL10 and COVID-19.