TGFB1 and Peritoneal Fibrosis: Among the many factors involved in peritoneal fibrosis, EMT, the inflammatory response, autophagy, epigenetic regulation, and neovascularization are the dominant factors in fibrosis, of which TGF-β1 plays an important role in the activation of various signalling pathways, the induction of inflammatory factors, and the hypoxia stress response.