Figs. 4a and  7a, b) and the mRNA levels of cardiomyopathy-associated genes, including the p53 gene (Trp53)18, β-myosin heavy chain gene (Myh7)19 (Fig. 5b, c), and transforming growth factor-β1 gene (Tgfb1)20(Suppl. The gene discussed is TGFB1; the disease is cardiomyopathy.