PKP2 and arrhythmogenic right ventricular cardiomyopathy: Nevertheless, it still remains unexplained why DSG2 from transplanted ARVD/C subjects seems more frequently mutated in our patients (three of seven) compared to that which has been reported in previous ARVD/C screens (around 10% [8,30]), and to PKP2, the major gene in ARVD/C (around 30% [8]).