IL4 and tumor of salivary gland: In patients with salivary gland tumors (WT and PA), various chemokines have been determined, including CCL28 [34], CXCL10, CXCL12, CCL18 [35], and CXCL1 [36], as well as pro-inflammatory cytokines such as IL-1β [36], IL-6 [25], IL-4 [37], IL-17 [38], and IL-33 [25,39,40,41].