Table 3.

KCNQ4 Pathogenic Variants Discussed in This GeneReview

DNA Nucleotide Change
(Alias 1)
Predicted Protein Change
(Alias 1)
Protein DomainPopulationOnset of Symptoms 2Reference
c.211_223del13
(211del13)
p.Gln71ProfsTer64
(Q71fsTer134)
N-terminal cytoplasmicBelgianAdolescence Coucke et al [1999]
c.211delCp.Gln71SerfsTer68
(FS71)
N-terminal cytoplasmicJapaneseAdolescenceKamada et al [2006], Ishikawa et al [2014]
c.827G>Cp.Trp276SerP-loopDutch, JapaneseChildhoodCoucke et al [1999], Van Camp et al [2002], Topsakal et al [2005]
c.853G>Tp.Gly285CysP-loopNorth AmericanChildhood Coucke et al [1999]
c.853G>Ap.Gly285SerP-loopNorthern European, Han ChineseChildhoodKubisch et al [1999], Wang et al [2014]

Variants listed in the table have been provided by the authors. GeneReviews staff have not independently verified the classification of variants.

GeneReviews follows the standard naming conventions of the Human Genome Variation Society (varnomen​.hgvs.org). See Quick Reference for an explanation of nomenclature.

Reference sequences for KCNQ4: NM_004700​.2, NP_004691​.2

1.

Variant designation that does not conform to current naming conventions

2.

Pathology was high-frequency hearing impairment and tissue-specific expression was in cochlear outer hair cells and brain for all pathogenic variants described in the table.

From: DFNA2 Nonsyndromic Hearing Loss

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