Paralogue Annotation for KCNH2 residue 612

Residue details

Gene: KCNH2
Reference Sequences: LRG: LRG_288, Ensembl variant: ENST00000262186 / ENSP00000262186
Amino Acid Position: 612
Reference Amino Acid: V - Valine
Protein Domain: Transmembrane/Linker/Pore


Paralogue Variants mapped to KCNH2 residue 612

ParalogueVariantAssociated DiseaseMapping QualityConsensusPubmed
CNGA3I353TAchromatopsiaMedium8 25637600

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.



KCNH2-G------------------LGGPSIKDKY>V<TALYFTFSSLTSVGFGNVSPNTNSEKIFSI642
KCNH1SG-----------S--GK-WEGGPSKNSVY>I<SSLYFTMTSLTSVGFGNIAPSTDIEKIFAV481
KCNH3SGQSDNCSSSSEANGTGLELLGGPSLRSAY>I<TSLYFALSSLTSVGFGNVSANTDTEKIFSI483
KCNH4-------------------SVGGPSRRSAY>I<AALYFTLSSLTSVGFGNVCANTDAEKIFSI457
KCNH5-S-----------A--GI-WEGGPSKDSLY>V<SSLYFTMTSLTTIGFGNIAPTTDVEKMFSV450
KCNH6-D-----------P------ASGPSVQDKY>V<TALYFTFSSLTSVGFGNVSPNTNSEKVFSI494
KCNH7-D-----------S------SSGPSIKDKY>V<TALYFTFSSLTSVGFGNVSPNTNSEKIFSI645
KCNH8-------------------TLGGPSIRSAY>I<AALYFTLSSLTSVGFGNVSANTDAEKIFSI452
CNGA1---------------------EFGRLARKY>V<YSLYWSTLTLTTIG-ETPPPVRDSEYVFVV379
CNGA2---------------------EYGYLAREY>I<YCLYWSTLTLTTIG-ETPPPVKDEEYLFVI354
CNGA3---------------------EHGRLSRKY>I<YSLYWSTLTLTTIG-ETPPPVKDEEYLFVV382
CNGA4---------------------GFERLRRQY>L<YSFYFSTLILTTVG-DTPPPAREEEYLFMV248
CNGB1------------------------GVGNSY>I<RCYYFAVKTLITIG-GLPDPKTLFEIVFQL862
CNGB3------------------------GEGNEY>L<RCYYWAVRTLITIG-GLPEPQTLFEIVFQL424
HCN1---------------------VNDSWGKQY>S<YALFKAMSHMLCIGYGAQAPVSMSDLWITM376
HCN2---------------------VNHSWSELY>S<FALFKAMSHMLCIGYGRQAPESMTDIWLTM445
HCN3---------------------VNHSWGRQY>S<HALFKAMSHMLCIGYGQQAPVGMPDVWLTM329
HCN4---------------------VNNSWGKQY>S<YALFKAMSHMLCIGYGRQAPVGMSDVWLTM496
cons                              > <                              

See full Alignment of Paralogues


Known Variants in KCNH2

ProteinCDSDisease ClassificationDiseasedbSNP linksEffect Prediction
p.V612Lc.1834G>T Inherited ArrhythmiaLQTSSIFT: tolerated
Polyphen: benign
ReportsInherited ArrhythmiaLQTS Multiple different missense mutations in the pore region of HERG in patients with long QT syndrome. Hum Genet. 1998 102(3):265-72. 9544837
Inherited ArrhythmiaLQTS Most LQT2 mutations reduce Kv11.1 (hERG) current by a class 2 (trafficking-deficient) mechanism. Circulation. 2006 113(3):365-73. 16432067
p.V612Mc.1834G>A Inherited ArrhythmiaLQTSSIFT:
Polyphen:
ReportsInherited ArrhythmiaLQTS Results of genetic testing in 855 consecutive unrelated patients referred for long QT syndrome in a clinical laboratory. Genet Test Mol Biomarkers. 2013 17(7):553-61. doi: 10.1089/gtmb.2012.0118. 23631430