CASQ2 (Calsequestrin-2) variants and mutations

CASQ2 (also known as Calsequestrin-2) is a human protein-coding gene encoding a calsequestrin-2 protein. It buffers calcium inside the cardiac sarcoplasmic reticulum and helps regulate calcium release through RYR2 during each heartbeat. Biallelic and some dominant pathogenic variants cause catecholaminergic polymorphic ventricular tachycardia by destabilizing intracellular calcium handling. This analysis covers 760 CASQ2 variants and mutations. Of these, 82% have computational variant effect predictions. Disease context includes catecholaminergic polymorphic ventricular tachycardia, catecholaminergic polymorphic ventricular tachycardia 1, and Abnormality of the cardiovascular system. Example CASQ2 variants include M1?, M1I, and M1T.

Variant analysis overview

Variant and mutation evidence

Clinical, disease, and population context

Protein structure and variant hotspots

Data sources

Evidence in this analysis draws on EBI Proteins Variation, UniProt, gnomAD v4, EuropePMC, 3D Hotspot Analysis, Interaction Network Analysis, Protein Data Bank, AlphaFold DB, gnomAD constraint, Open Targets, ClinGen, MaveDB, LitVar.

Notable CASQ2 variants

Examples include M1?, M1I, M1T, K2E, K2N, K2R, R3I, R3T. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.