CCL18 and head and neck squamous cell carcinoma: Metastasis was also supported by CCL18 secreting TAMs in pancreatic ductal adenocarcinoma (PDAC) (105), head and neck squamous cell carcinoma (HNSCC) (106), osteosarcoma (107), gallbladder cancer (108), hepatocellular carcinoma (HCC) (109), NSCLC (110), gastric cancer (111).