Functional analysis of the PPI layer of the intracellular signalling network of infected ciliated cells upon moderate COVID-19 revealed an alteration of pathways related to cell motility and migration, cell adhesion mediated by the ECM (laminin, non-integrins interactions), pro-inflammatory signalling pathways (Interleukin, MAPK, PI3K, NF-kB signalling), cell cycle arrest and intestinal homeostasis (Supplementary Fig. 12). The gene discussed is NFKB1; the disease is COVID-19.