HGF and pneumonia: It mostly induces the common cold in humans, but complications such as pneumonia and SARS-CoV-2 can happen.8 Most of COVID-19 patients have a high degree of pro-inflammatory response causing the cytokine release syndrome (CRS) with a notable rise in the degree of several pro-and anti-inflammatory cytokines and chemokines, such as interferon (IFN)-α, interferon-gamma induced protein 10 (IP-10), IL-1ra, IL-2ra, IL-6, IL-10, IL-18, hepatocyte growth factor (HGF) and monocyte chemotactic protein-3 (MCP-3).