CSAG3 and gastric cancer: CSAG3, also known as TRAG-3 (taxol resistance associated gene-3), was reported to be up-regulated in many tumors including gastric cancer, urothelial carcinoma of the bladder, ovarian carcinoma, and melanoma (Aung et al., 2006; Feller et al., 2000; Karam et al., 2011; Materna et al., 2007).