CASQ2（calsequestrin 2），癌症关联基因，基因ID：845，这个基因编码的蛋白质指定了钙固蛋白家族的心肌家族成员Calsequestrin定位于心肌和慢骨骼肌细胞的肌浆网这种蛋白质是一种钙结合蛋白，为肌肉功能储存钙该基因突变导致应激诱导的多形性室性心动过速，也被称为儿茶酚胺能多形性室性心动过速2（cpvt2），一种以双向室性心动过速为特征的疾病，可导致心脏骤停。[由RefSeq提供，2008年7月]The protein encoded by this gene specifies the cardiac muscle family member of the calsequestrin family. Calsequestrin is localized to the sarcoplasmic reticulum in cardiac and slow skeletal muscle cells. The protein is a calcium binding protein that stores calcium for muscle function. Mutations in this gene cause stress-induced polymorphic ventricular tachycardia， also referred to as catecholaminergic polymorphic ventricular tachycardia 2 (CPVT2)， a disease characterized by bidirectional ventricular tachycardia that may lead to cardiac arrest. [provided by RefSeq， Jul 2008]。