dilated cardiomyopathy 2B (MONDO_0013848, a Monarch Disease Ontology id) is any familial isolated dilated cardiomyopathy in which the cause of the disease is a mutation in the GATAD1 gene. Also known as: CMD2B, GATAD1 familial isolated dilated cardiomyopathy, cardiomyopathy, dilated, type 2B, dilated cardiomyopathy type 2B, familial isolated dilated cardiomyopathy caused by mutation in GATAD1.