Chemokine levels are altered in schizophrenia. IL-8 (CXCL8) is elevated in the cerebrospinal fluid of patients. MCP-1 (CCL2), MIP-1β (CCL4), eotaxin-1 (CCL11), and IL-8 (CXCL8) are elevated in serum of patients. This evidence concerns the gene CCL2 and schizophrenia.