Therefore, we analyzed the expression of DRAIC, UCHL5 and NFRKB in GC through the TCGA database (gepia.cancer-pku.cn/index.html), and found that DRAIC was down-regulated in GC tissues, while both UCHL5 and NFRKB were highly expressed (Fig. 1b, c and d), which suggested that they may participate in the formation of GC. Here, NFRKB is linked to gastric cancer.