KCNQ3 (O43525) variants and mutations

KCNQ3 (also known as O43525) is a human protein-coding gene encoding a potassium voltage-gated channel subfamily KQT member 3 protein. Together with KCNQ2, its slowly activating current provides much of the neuronal M-current that suppresses repetitive firing. Pathogenic variants can cause self-limited neonatal epilepsy or more severe developmental and epileptic encephalopathy. This analysis covers 1,456 KCNQ3 variants and mutations. Of these, 75% have computational variant effect predictions. Disease context includes Benign familial neonatal seizures, Seizure, and multiple sclerosis. Example KCNQ3 variants include M1T, G2R, and A5S.

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 KCNQ3 variants

Examples include M1T, G2R, A5S, A5T, A5V, R6C, R6H, A8E. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.