TNNI3 and cardiomyopathy, familial restrictive, 1: A recent study analysed, through NGS technology, 32 independent patients, who fulfilled the diagnostic criteria for idiopathic RCM and demonstrated that causative pathogenic variants can be identified in > 60% of cases in MYH7, DES, FLNC, MYBPC3, LMNA, TCAP, TNNI3, TNNT2, TPM1 and LAMP2 genes.