Figure 1. (A–C) Volcano plot demonstrating an overview of the differential expression of all genes in fHP, IPF and CTD-ILD. The threshold in the volcano plot was -log10 adjusted P>2 and |log2 fold change| >0.5; red dots indicate significant differential expressed genes. Note: CTD-ILD expression matrix was the mergence of SSc-ILD and RA-ILD datasets.