Cardiomyopathy, Dilated, 1jj, also known as dilated cardiomyopathy 1jj, is related to cardiomyopathy, dilated, 1a and dilated cardiomyopathy. An important gene associated with Cardiomyopathy, Dilated, 1jj is LAMA4 (Laminin Subunit Alpha 4). Affiliated tissues include heart and endothelial, and related phenotypes are dilated cardiomyopathy and reduced left ventricular ejection fraction