Additional chemokines, such as CCL1/II-309, CCL2/MCP-2, CCL4/MIP-α, CCL7/MCP-3, CCL20/MIP-3α, CCL22/MDC, CCL24/EOTAXIN-2, IL-1α, IL-15, IL-1Ra, IL-2Ra, IL-5, IL-6, M-CSF, SCGFb, and SDF-1a, have since been detected in the plasma of DS patients [7, 27]. This evidence concerns the gene CCL22 and Dravet syndrome.