IL17A and COVID-19: In the TR_A2_vs_TR_A3 group (Figure 4D), the main enrichment pathways were necroptosis (10), osteoclast differentiation (9), NF-kappa B signaling pathway (8), complement and coagulation cascades (6), IL-17 signaling pathway (6), influenza A (7), NOD-like receptor signaling pathway (7), and coronavirus disease-COVID-19 (8).