The researchers measured the serum concentrations of dimethylglycine (DMG), Apelin-12, and lncR-Meg3 in 110 patients with acute chest pain for more than 6 h, Results showed that the levels of lncR-Meg3 in acute myocardial infarction (AMI) groups were approximately two times higher than those in healthy individuals. Here, MEG3 is linked to myocardial infarction.