Our prior research revealed that Brahma-related gene 1 (BRG1) expression is elevated after MI and exacerbated cardiac electrophysiological remodeling; however, its precise role and molecular mechanism in post-MI fibrosis remain undefined.<h4>Methods</h4>BRG1 expression was assessed in a mouse MI model and in TGF-β1-stimulated cardiac fibroblasts (CFs). This evidence concerns the gene TGFB1 and myocardial infarction.