Among the top 20 signaling pathways enriched by KEGG, interleukin (IL)-17 signaling pathway, tumor necrosis factor (TNF) signaling pathway, toll-like receptor (TLR) signaling pathway, Th17 cell differentiation, and Coronavirus disease - COVID-19 5 signaling pathways were analyzed, which included 29 core genes. Here, IL17A is linked to COVID-19.