Fig. 1

Identification of 261 DEGs from the four profile datasets. a Volcano plot of the GSE23558; b Volcano plot of the GSE30784; c Volcano plot of the GSE37991; d Volcano plot of the GSE74530 (red color dots represent the upregulated genes; green color dots represent the downregulated genes); e Venn diagram was utilized to screen the overlapping DEGs in four datasets. f The data profile of GSE37991 was used as a reference to construct the heatmap and to show the differential distribution of DEGs. DEGs, differentially expressed genes; logFC, log‑fold change