CXCL9 and gastric cancer: Besides, a research of CXCL family related to Epstein-Barr virus (EBV) associated gastric cancer has elucidated that the expression differences of CXCL family members were closely related to the progression of EBV-associated GC, including the relationship with clinical stage, virus infection, prognosis, etc. It was reported that changes in CXCL9, CXCL10, CXCL11 and CXCL17 mRNA expression had potential prognostic values in patients with EBV-associated GC [28].