Lamin A / C Cardiomyopathy (Cardiolaminopathy) By L Brent Mitchell, MD, Libin Cardiovascular Institute of Alberta, University of Calgary Reviewed / Revised Jan 2023 View Patient Education Diagnosis Treatment Key Points Lamin A / C cardiomyopathies are genetic disorders causing dilated cardiomyopathy, a variety of arrhythmias, conduction disorders, and increased risk of sudden death.