CCL20 and COVID-19: All of the 6 intersected genes have been reported to associate with COVID-19, including FGFR3 (Hachim et al., 2021), TP63 (Delorey et al., 2021), CXCL2 (Livanos et al., 2021), CCL20 (Chua et al., 2020), IL1B (Chua et al., 2020) and CXCL8 (Zheng et al., 2021).