Indeed, comparing KD and MIS-C patients during the acute phase, only the expression levels of TNF-α were higher in the latter, while the IL-10 levels were higher in the former group, and during the subacute phase, higher levels of IL-10 and MCP-1 were found in MIS-C with respect to KD. Here, CCL2 is linked to COVID-19–associated multisystem inflammatory syndrome in children.