CD8A and familial dilated cardiomyopathy: Preliminary studies had suggested that multiple immune cells, including cytotoxic CD8(+) T cells, B cells, and macrophages, were infiltrated in various types of DCM (such as Chronic Chagas cardiomyopathy and idiopathic dilated cardiomyopathies), in which T cells related differentiation might play an important role on the progression of abnormal immune and inflammatory response in DCM6.