ADORA2A and idiopathic dilated cardiomyopathy: Genome-wide cardiac DNA methylation in idiopathic dilated cardiomyopathy patients revealed abnormal DNA methylation, which was related to important variations in the expression of lymphocyte antigen 75 (LY75) and adenosine receptor A2A (ADORA2A) mRNA (Haas et al., 2013).