RYR2 and catecholaminergic polymorphic ventricular tachycardia: Patient‐specific induced pluripotent stem cell‐derived cardiomyocytes have emerged as a powerful model of inherited arrhythmia disorders after the development of stem cell reprogramming by Yamanaka et al23 iPSC‐CMs containing various CPVT‐associated RyR2 variants have been generated and studies using confocal imaging and patch‐clamping approaches.