FGF7 and atrial fibrillation: Indeed, in this work, the AF mesenchymal stem cell secretory profile showed to be significantly enriched for a variety of interleukins (IL-10, IL-27, IL-17E, IL-12p70, IL-1β and IL-1ra) and liver regenerative mediators (MCP-1, SDF-1, platelet-derived endothelial cell growth factor (PD-ECGF), tissue inhibitors of metalloproteinase, TIMP1 and TIMP2, fibroblast growth factor 7 (FGF7), and EGF) [51].