CD274 and hepatocellular carcinoma: Over-expression of these B7 family members (B7-H1, -H3 or -H4) has been documented in various types of carcinoma as compared to healthy controls: (1) H7-H1 in pancreatic tumors [103,104], RCC [105,106], human hepatocellular carcinoma (HCC) [107,108], urothelial cell carcinoma (UCC) [109] and NSCLC [110]; (2) B7-H3 in UCC [111]; and (4) H7-H4 in NSCLC [112], breast cancer [113,114] and ovarian cancer [115].