The mechanisms behind diabetic cardiomyopathy (DCM) have been deeply studied but still not well-established within the scientific community. Mutations in cardiac junction proteins may result in heart failure and arrhythmia. ER degradation enhancing α-mannosidase like protein 2 (EDEM2) is involved in the degradation of misfolded N-glycosylated proteins, but its role in the heart is not clear and was investigated.