For example, GLP-1RAs may modulate the CD36-JNK-AP1 pathway by partially down-regulating prolyl 4-hydroxylase subunit alpha-1 (P4HA1), and then inhibit ROS production mediated by Ang II type I receptor, thereby ameliorating cardiac fibroblast proliferation and myocardial fibrosis 167, 168. The gene discussed is P4HA1; the disease is Myocardial fibrosis.