NFKB1 and pulmonary fibrosis: Module 4 includes 34 genes, being associated with TNF and TCR signaling pathways and also involved in ER stress-related major (NF-kB survival signaling, lung fibrosis) and minor (AP-1 and HIF1α survival signaling, apoptosis, autophagy and inflammation) terms (Figure 6C, green outlines).