The majority of these truncating variants were found in key genes associated with DCM (e.g. TTN and RBM20), HCM (e.g. ALPK3, MYH6 and MYBPC3), and ARVC (e.g. PKP2, DSP and DSG2). Here, RBM20 is linked to arrhythmogenic right ventricular cardiomyopathy.