CCL2 and COVID-19: Specifically, significantly higher proinflammatory interleukin (IL)-8, chemoattractant protein 1 (MCP-1) responsible for neutrophil recruitment to the lungs, as well as RANTES—critical for homing and migration of effector T cells (CCL5)—were observed in the setting of COVID-19+FcγR2B+3B− plasma profiles compared with profiles enriched in the controls56.