NOD2 and hepatocellular carcinoma: Among these genes, 10 genes (AIM2, IL1B, IL6, NLRC4, NLRP3, NLRP6, NLRP7, TNF, GZMB, and MEFV) were significantly downregulated, and 12 genes (CASP3, CASP8, GPX4, GSDMB, GSDMC, GSDMD, DFNA5, NLRP1, NOD1, NOD2, PLCG1, and PYCARD) were significantly upregulated in HCC tissues (Fig. 1A).