Cardiomyopathy, Dilated, 1u, also known as dilated cardiomyopathy 1u, is related to cardiomyopathy, dilated, 1a, and has symptoms including syncope An important gene associated with Cardiomyopathy, Dilated, 1u is PSEN1 (Presenilin 1). Affiliated tissues include heart and heart-ventricle, and related phenotypes are dilated cardiomyopathy and increased left ventricular end-diastolic volume