TGFB1 and atrial fibrillation: Consistent with this, Gene Ontology (GO) term enrichment analysis revealed the distinctive characteristics in each region of the IVD atlas population, such as “cellular response to transforming growth factor beta (TGFbeta) stimulus” in the NP cluster, “collagen biosynthetic process” in the AF cluster and “bone remodeling” in the CEP cluster (Figure 1G; Table S2, Supporting Information).