KCNQ1 (Potassium voltage-gated channel subfamily KQT member 1) variants and mutations

KCNQ1 (also known as Potassium voltage-gated channel subfamily KQT member 1) is a human protein-coding gene encoding a potassium voltage-gated channel subfamily KQT member 1 protein. The protein forms the pore of a voltage-gated potassium channel that helps set electrical activity in heart muscle. Its partnerships with KCNE subunits also support normal function in the inner ear and other tissues, while KCNQ1 variants are linked to long-QT and short-QT syndromes. This analysis covers 1,718 KCNQ1 variants and mutations. Of these, 97% have computational variant effect predictions. Disease context includes long QT syndrome 1, Jervell and Lange-Nielsen syndrome 1, and atrial fibrillation, familial, 3. Example KCNQ1 variants include M1K, M1L, 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, PharmGKB, MaveDB, LitVar.

Notable KCNQ1 variants

Examples include M1K, M1L, M1T, M1V, A2G, A2T, A2V, A2S. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.