Paralogue Annotation for KCNH2 residue 620

Residue details

Gene: KCNH2
Reference Sequences: LRG: LRG_288, Ensembl variant: ENST00000262186 / ENSP00000262186
Amino Acid Position: 620
Reference Amino Acid: S - Serine
Protein Domain: Transmembrane/Linker/Pore


Paralogue Variants mapped to KCNH2 residue 620

ParalogueVariantAssociated DiseaseMapping QualityConsensusPubmed
CNGB3R403QProgressive cone dystrophyMedium9 15161866, 22995991, 22975760, 16379026, 24504161

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------------LGGPSIKDKYVTALYFTF>S<SLTSVGFGNVSPNTNSEKIFSICVMLIGSL650
KCNH1-----S--GK-WEGGPSKNSVYISSLYFTM>T<SLTSVGFGNIAPSTDIEKIFAVAIMMIGSL489
KCNH3SSSEANGTGLELLGGPSLRSAYITSLYFAL>S<SLTSVGFGNVSANTDTEKIFSICTMLIGAL491
KCNH4-----------SVGGPSRRSAYIAALYFTL>S<SLTSVGFGNVCANTDAEKIFSICTMLIGAL465
KCNH5-----A--GI-WEGGPSKDSLYVSSLYFTM>T<SLTTIGFGNIAPTTDVEKMFSVAMMMVGSL458
KCNH6-----P------ASGPSVQDKYVTALYFTF>S<SLTSVGFGNVSPNTNSEKVFSICVMLIGSL502
KCNH7-----S------SSGPSIKDKYVTALYFTF>S<SLTSVGFGNVSPNTNSEKIFSICVMLIGSL653
KCNH8-----------TLGGPSIRSAYIAALYFTL>S<SLTSVGFGNVSANTDAEKIFSICTMLIGAL460
CNGA1-------------EFGRLARKYVYSLYWST>L<TLTTIG-ETPPPVRDSEYVFVVVDFLIGVL387
CNGA2-------------EYGYLAREYIYCLYWST>L<TLTTIG-ETPPPVKDEEYLFVIFDFLIGVL362
CNGA3-------------EHGRLSRKYIYSLYWST>L<TLTTIG-ETPPPVKDEEYLFVVVDFLVGVL390
CNGA4-------------GFERLRRQYLYSFYFST>L<ILTTVG-DTPPPAREEEYLFMVGDFLLAVM256
CNGB1----------------GVGNSYIRCYYFAV>K<TLITIG-GLPDPKTLFEIVFQLLNYFTGVF870
CNGB3----------------GEGNEYLRCYYWAV>R<TLITIG-GLPEPQTLFEIVFQLLNFFSGVF432
HCN1-------------VNDSWGKQYSYALFKAM>S<HMLCIGYGAQAPVSMSDLWITMLSMIVGAT384
HCN2-------------VNHSWSELYSFALFKAM>S<HMLCIGYGRQAPESMTDIWLTMLSMIVGAT453
HCN3-------------VNHSWGRQYSHALFKAM>S<HMLCIGYGQQAPVGMPDVWLTMLSMIVGAT337
HCN4-------------VNNSWGKQYSYALFKAM>S<HMLCIGYGRQAPVGMSDVWLTMLSMIVGAT504
cons                              > <                              

See full Alignment of Paralogues


Known Variants in KCNH2

ProteinCDSDisease ClassificationDiseasedbSNP linksEffect Prediction
p.S620Nc.1859G>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
p.S620Gc.1858A>G Inherited ArrhythmiaLQTSSIFT:
Polyphen:
ReportsInherited ArrhythmiaLQTS High incidence of functional ion-channel abnormalities in a consecutive Long QT cohort with novel missense genetic variants of unknown significance. Sci Rep. 2015 5:10009. doi: 10.1038/srep10009. 26066609