Paralogue Annotation for KCNH2 residue 805

Residue details

Gene: KCNH2
Reference Sequences: LRG: LRG_288, Ensembl variant: ENST00000262186 / ENSP00000262186
Amino Acid Position: 805
Reference Amino Acid: F - Phenylalanine
Protein Domain: C-terminus


Paralogue Variants mapped to KCNH2 residue 805

ParalogueVariantAssociated DiseaseMapping QualityConsensusPubmed
CNGA3F547LColour-blindness, totalHigh9 9662398, 20088482, 23972307
CNGA3F547CAchromatopsiaHigh9 25616768

To assess whether the paralogue annotation here confidently predicts that variation at this residue is pathogenic, it is important to check the reports in the Pubmed links above to ascertain that the mutations in these paralogues have been proved likely to be disease-causing. It is also important to check that the direction of effect of the variant in the paralogue is compatible with your observed phenotype in KCNH2.



KCNH2YFISRGSIEILRG-D--V--VVAILGKNDI>F<GEPLNLYAR------P----GKSNGDVRAL825
KCNH1CFVVSGSLEVIQD-D--E--VVAILGKGDV>F<GDVFWKEAT------L----AQSCANVRAL664
KCNH3YFVCSGSMEVLKG-G--T--VLAILGKGDL>I<GCELPRREQ------V----VKANADVKGL665
KCNH4YYVCSGSLEVLRD-N--M--VLAILGKGDL>I<GADIPEPGQEPGLGADPNFVLKTSADVKAL649
KCNH5CFVVSGSLEVIQD-D--E--VVAILGKGDV>F<GDIFWKETT------L----AHACANVRAL633
KCNH6YFISRGSIEILRD-D--V--VVAILGKNDI>F<GEPVSLHAQ------P----GKSSADVRAL677
KCNH7YFLSRGSIEILKD-D--I--VVAILGKNDI>F<GEMVHLYAK------P----GKSNADVRAL828
KCNH8YFVCSGSMEVLKD-S--M--VLAILGKGDL>I<GANLSIKDQ------V----IKTNADVKAL634
CNGA1YIIKEGKLAVVAD-D--GVTQFVVLSDGSY>F<GEISILNIKGSKA--G----NRRTANIKSI568
CNGA2YIIKEGKLAVVAD-D--GVTQYALLSAGSC>F<GEISILNIKGSKM--G----NRRTANIRSL543
CNGA3YIINEGKLAVVAD-D--GVTQFVVLSDGSY>F<GEISILNIKGSKS--G----NRRTANIRSI571
CNGA4YIIREGQLAVVAD-D--GITQYAVLGAGLY>F<GEISIINIKGNMS--G----NRRTANIKSL437
CNGB1YIIQAGQVQVLGGPDGKS--VLVTLKAGSV>F<GEISLLAVGG-----G----NRRTANVVAH1049
CNGB3YIIKHGEVQVLGGPDGTK--VLVTLKAGSV>F<GEISLLAAGG-----G----NRRTANVVAH611
HCN1YFIQHGVAGVITK-S--S--KEMKLTDGSY>F<GEICLLTKG------------RRTASVRAD556
HCN2YFIQHGVVSVLTK-G--N--KEMKLSDGSY>F<GEICLLTRG------------RRTASVRAD625
HCN3YFIQHGLLSVLAR-G--A--RDTRLTDGSY>F<GEICLLTRG------------RRTASVRAD509
HCN4YFIQHGVVSVLTK-G--N--KETKLADGSY>F<GEICLLTRG------------RRTASVRAD676
cons                              > <                              

See full Alignment of Paralogues


Known Variants in KCNH2

ProteinCDSDisease ClassificationDiseasedbSNP linksEffect Prediction
p.F805Cc.2414T>G Inherited ArrhythmiaLQTSSIFT: deleterious
Polyphen: probably damaging
ReportsInherited ArrhythmiaLQTS Spectrum of mutations in long-QT syndrome genes. KVLQT1, HERG, SCN5A, KCNE1, and KCNE2. Circulation. 2000 102(10):1178-85. 10973849
Inherited ArrhythmiaLQTS Increased risk of arrhythmic events in long-QT syndrome with mutations in the pore region of the human ether-a-go-go-related gene potassium channel. Circulation. 2002 105(7):794-9. 11854117
Inherited ArrhythmiaLQTS Compendium of cardiac channel mutations in 541 consecutive unrelated patients referred for long QT syndrome genetic testing. Heart Rhythm. 2005 2(5):507-17. 15840476
Inherited ArrhythmiaLQTS Most LQT2 mutations reduce Kv11.1 (hERG) current by a class 2 (trafficking-deficient) mechanism. Circulation. 2006 113(3):365-73. 16432067
Inherited ArrhythmiaLQTS C101, a novel 4-amino-piperidine derivative selectively blocks N-type calcium channels. Eur J Pharmacol. 2008 587(1-3):42-7. 18468596
Inherited ArrhythmiaLQTS The binding site for channel blockers that rescue misprocessed human long QT syndrome type 2 ether-a-gogo-related gene (HERG) mutations. J Biol Chem. 2002 277(7):4989-98. 11741928
Inherited ArrhythmiaLQTS An in vivo cardiac assay to determine the functional consequences of putative long QT syndrome mutations. Circ Res. 2013 112(5):826-30. doi: 10.1161/CIRCRESAHA.112.300664. 23303164
p.F805Sc.2414T>C Inherited ArrhythmiaLQTSSIFT: deleterious
Polyphen: probably damaging
ReportsInherited ArrhythmiaLQTS Spectrum of mutations in long-QT syndrome genes. KVLQT1, HERG, SCN5A, KCNE1, and KCNE2. Circulation. 2000 102(10):1178-85. 10973849
Inherited ArrhythmiaLQTS Large-scale mutational analysis of Kv11.1 reveals molecular insights into type 2 long QT syndrome. Nat Commun. 2014 5:5535. doi: 10.1038/ncomms6535. 25417810