CCL2 and Warthin tumor: Additionally, an increase in salivary pro-inflammatory factors in obese patients, such as interleukin 15 (IL-15), pentraxin 3 (PTX-3), monocyte chemoattractant protein 1 (MCP-1), and tumor necrosis factor-α receptors 1 and 2 (TNF-α-R1, TNF-α-R2) has been detected, suggesting that the Warthin tumor may have an inflammatory etiology [39].