Figure 2. Identification and pan-cancer analysis of endoplasmic reticulum stress-related genes (ERGs). (A) The differentially expressed genes (DEGs) between pancreatic tumours and normal tissues. (B) The intersection of DEGs and ERGs. (C) Univariate Cox regression analysis for ERGs. (D) The copy number variation (CNV) of ERGs within pan-cancer. (E) The correlation between CNV and expression. (F) Methylation difference of ERGs between tumour and normal tissues. (G) The correlation between methylation and expression. (H) The oncoplot of ERGs mutation within pan-cancer. (I) Mutation frequency of ERGs.