RPSAP6 and arrhythmogenic right ventricular cardiomyopathy: The recent finding of a functional lamr1 retroposon as a cause of ARVC in the mouse and the possibility that an expressed pseudogene may regulate the messenger RNA stability of a homologous gene [28] suggest that the LAMR1P6 pseudogene/retroposon is a plausible candidate for ARVC in man.