FNDC4 and neoplasm: To further research the correlation between FNDC4 and liver hepatocellular carcinoma, we compared the expression level of FNDC4 in liver cancer tissues with that in normal liver tissues (Figure 2A) based on patient sex (Figure 2B), weight (Figure 2C), age (Figure 2D), tumor grade (Figure 2E), and individual cancer stage (Figure 2F).