RTN4 and familial dilated cardiomyopathy: The expression of every key gene was verified in GSE120836, and 7 key genes (FMOD, CYP1B1, KANSL1, F2RL1, HAPLN1, CA3, and SNAP91) showed significant differences between LMNA-DCM and healthy controls [Fig. 7] (SERPINA3N, SPP1 and RTN4 were not detected in GSE120836).