Six genes with mutations have been linked to CPVT, exhibiting inheritance patterns ranging from autosomal dominant (RyR2, KCNJ2, CALM1, and CALM2) to autosomal recessive (calcium sequestration protein CASQ2 and calcium release complex TRDN) (9, 10). Here, RYR2 is linked to catecholaminergic polymorphic ventricular tachycardia.