CCL2 and myeloid sarcoma: CC Chemokine 2 (CCL2) namely Monocyte chemotactic protein-1 (MCP-1) and highly expressed in the cerebrospinal fluid of human multiple sclerosis (MS) patients (Stampanoni Bassi et al., 2021), and plays a key role in regulating in the migration of monocytes to the CNS (Kaushansky et al., 2019).