The results showed that FCN1 and FCN3 showed significant correlations (p < 0.05) with a large number of pathways in HCC, while FCN2 only showed significant correlations with PPAR_SIGNALING_PATHWAY, CALCIUM_SIGNALING_PATHWAY and ADIPOCYTOKINE_SIGNALING_PATHWAY showed significant correlations (Supplementary Figure S3). The gene discussed is FCN2; the disease is hepatocellular carcinoma.