CCL4 and COVID-19: According to the data set, BIRC3, CCL3, CCL3L1, CCL4, CSF2, IL1B, LTA, LIF, and LTBR expression was lower in severe COVID-19 patients (group 1) compared to healthy controls, while CSF, CXCL1, CXCL2, CXCL8, LTBR, NFKBIA, OSM, and TNF expression was higher.