Identification of significant differentially expressed genes (DEGs) in pancreatic cancer. (A) The intersection of upregulated DEGs of GSE28735, GSE62452 and GSE41368 datasets. (B) The intersection of downregulated DEGs of GSE28735, GSE62452 and GSE41368 datasets. DEGs, Differentially expressed genes. |log2FC| >1 and adj. p-value < 0.05 were set as the cut-off criteria.