Cardiac channelopathies are a group of clinical syndromes caused by mutations in genes encoding for cardiac ion channels, including potassium (K+), sodium (Na+), calcium (Ca2+) channels, etc.70A significant number of channelopathies, such as inherited long QT syndrome (LQTS) and catecholaminergic polymorphic ventricular tachycardia (CPVT) have been successfully modeled using patient‐specific hiPSC‐CMs. Here, CA2 is linked to catecholaminergic polymorphic ventricular tachycardia.