KCNQ2

This page contains an overview of the genetic variation in the KCNQ2 gene, including its role in inherited cardiac disease. For more details, click on the links below, or for a specific variant, enter the HGVS variant here:

KCNQ2 gene and transcript details

Gene Name
potassium voltage-gated channel, KQT-like subfamily, member 2

Gene Links
Ensembl: ENSG00000075043 - Locus Reference Genomic:

Genomic Location
Chromosome 20 : 62,037,997 - 62,103,816 (reverse strand)
View in: Ensembl - UCSC Genome Browser


Canonical Seqs Transcript (2616 bases)Protein (872 aa)
ENST00000359125 ENSP00000352035
NM_172107.2
O43526

Summary of KCNQ2 in Cardiomyopathies


KCNQ2 variants in ExAC

Details of the protein-altering KCNQ2 variants (missense, loss of function truncating, inframe indels and splice site regions) found in the ExAC database are shown below. To view lists of specific variants with links to detailed population frequency data, click on the variant numbers - for all or a particular variant class.

Total VariantsCombined frequency of rare variants
All Variants2240.00358
Truncating20.00002
Missense1750.00274
Inframe20.00011
Splice Site450.00077

Rare variants are defined as having a mean allelic frequency of less than 0.0001.