CAMK2G and hydrops fetalis: CaMKII inhibition prevents hypokalemia-induced EADs (Pezhouman et al., 2015), Ca2+ overload, and DADs in catecholaminergic polymorphic ventricular tachycardia (CPVT) (Di Pasquale et al., 2013) and in HF (Ai et al., 2005; Sag et al., 2009), in addition to hypokalemia-induced VT/VF (Pezhouman et al., 2015).