From the results of brain natriuretic peptide (BNP) and cardiac troponin T (c-TnT) in the serum of rats (Fig. 2C), we can see that compared with the control group, the BNP and c-TnT levels in the serum of the DCM rats were substantially elevated with the development of DCM. This evidence concerns the gene TNNT2 and familial dilated cardiomyopathy.