Other diseases which can lead to an HCM phenotype include inflammatory diseases (e.g., sarcoidosis), storage diseases (e.g., Danon disease, hemochromatosis, PRKAG2), syndromal diseases (Friedreich ataxia, FHL‐1, malformation syndromes), mitochondrial diseases and drug-induced cardiomyopathy. Here, PRKAG2 is linked to developmental defect during embryogenesis.