Monarch Disease Ontology identifier MONDO_0012704 (dilated cardiomyopathy 1X) is any familial isolated dilated cardiomyopathy in which the cause of the disease is a mutation in the FKTN gene. Also known as: CMD1X, FKTN familial isolated dilated cardiomyopathy, cardiomyopathy, dilated, type 1X, dilated cardiomyopathy type 1X, dilated cardiomyopathy with mild or no proximal muscle weakness, familial isolated dilated cardiomyopathy caused by mutation in FKTN.