Figure 1. Identification of DEGs in GEO dataset of IC/BPS patients. (A, B) The ggplot2 package performed principal component analysis (PCA) on the (A) unnormalized and (B) normalized GSE11783, GSE57560 and GSE621 datasets. (C) Volcano maps of the merged datasets. (D) Heatmaps of cluster analysis by DEGs expression in GSE11783, GSE57560 and GSE621 datasets.