CCL17 and Alzheimer disease: In addition to the proteins below LOD, potentially interesting proteins were not available on the commercial panel, including some AD-related proteins (CCL17, CCL18, CCL22, and CCL27) and others associated with type 2 inflammation (IL-3, IL-9, IL-25, IL-31, and the eotaxins, CCL24 and CCL26) [56].