FIGURE 3 | Identi fi cation of DEGs and common DEGs, KEGG pathways analysis. (A, B) Volcano plot of differentially expressed genes between case and control groups in GSE41664 and GSE5281 (|log2FC| > 1 and p-value < 0.05). (C) identi fi cation of common DEGs in psoriasis and AD using Venn tools. (D) Enriched signature KEGG pathways of common DEGs (p-value <0.05). PP UP, upregulated gene set in lesion skin of plaque psoriasis; PP DOWN, down-regulated gene set in lesion skin of plaque psoriasis; AD UP, upregulated gene set in AD; AD DOWN, down-regulated gene set in