CX3CL1 and Alzheimer disease: In CSF, the chemokines CCL2 (MCP-1), CCL5, CXCL8 (IL-8), CXCL10 (IP-10), CXCL12, and CX3CL1 (fractalkine) have available data in the literature from AD cohorts, MCI cohorts, or healthy control cohorts.