IFITM2 and pemphigus foliaceus: The expression of common DEGs obtained from Figure 2E in different samples was shown in Figure 8D, and the heatmap showed that FCGR2A, LY96, TNFSF10, IFITM2, OAS1, IRF9 and IRF2 were downregulated in PF samples, while these 7 genes were upregulated in normal samples.