PRKAG2 and cardiomyopathy: To deep phenotype the PRKAG2 cardiomyopathy patients, we performed cardiac MRI (CMR) on 8 subjects (8/22; 36% ) (AV-1, AIV-8, AIV-11, AV-11, BIV-2, CIII-5, CIV-1 and CIV-2) across three families.