Paralogue Annotation for KCNH2 residue 625

Residue details

Gene: KCNH2
Reference Sequences: LRG: LRG_288, Ensembl variant: ENST00000262186 / ENSP00000262186
Amino Acid Position: 625
Reference Amino Acid: V - Valine
Protein Domain: Transmembrane/Linker/Pore


Paralogue Variants mapped to KCNH2 residue 625

ParalogueVariantAssociated DiseaseMapping QualityConsensusPubmed
CNGA4V232MAmyotrophic lateral sclerosisHigh9 25773295

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-------LGGPSIKDKYVTALYFTFSSLTS>V<GFGNVSPNTNSEKIFSICVMLIGSLMYASI655
KCNH1S--GK-WEGGPSKNSVYISSLYFTMTSLTS>V<GFGNIAPSTDIEKIFAVAIMMIGSLLYATI494
KCNH3NGTGLELLGGPSLRSAYITSLYFALSSLTS>V<GFGNVSANTDTEKIFSICTMLIGALMHAVV496
KCNH4------SVGGPSRRSAYIAALYFTLSSLTS>V<GFGNVCANTDAEKIFSICTMLIGALMHAVV470
KCNH5A--GI-WEGGPSKDSLYVSSLYFTMTSLTT>I<GFGNIAPTTDVEKMFSVAMMMVGSLLYATI463
KCNH6P------ASGPSVQDKYVTALYFTFSSLTS>V<GFGNVSPNTNSEKVFSICVMLIGSLMYASI507
KCNH7S------SSGPSIKDKYVTALYFTFSSLTS>V<GFGNVSPNTNSEKIFSICVMLIGSLMYASI658
KCNH8------TLGGPSIRSAYIAALYFTLSSLTS>V<GFGNVSANTDAEKIFSICTMLIGALMHALV465
CNGA1--------EFGRLARKYVYSLYWSTLTLTT>I<G-ETPPPVRDSEYVFVVVDFLIGVLIFATI392
CNGA2--------EYGYLAREYIYCLYWSTLTLTT>I<G-ETPPPVKDEEYLFVIFDFLIGVLIFATI367
CNGA3--------EHGRLSRKYIYSLYWSTLTLTT>I<G-ETPPPVKDEEYLFVVVDFLVGVLIFATI395
CNGA4--------GFERLRRQYLYSFYFSTLILTT>V<G-DTPPPAREEEYLFMVGDFLLAVMGFATI261
CNGB1-----------GVGNSYIRCYYFAVKTLIT>I<G-GLPDPKTLFEIVFQLLNYFTGVFAFSVM875
CNGB3-----------GEGNEYLRCYYWAVRTLIT>I<G-GLPEPQTLFEIVFQLLNFFSGVFVFSSL437
HCN1--------VNDSWGKQYSYALFKAMSHMLC>I<GYGAQAPVSMSDLWITMLSMIVGATCYAMF389
HCN2--------VNHSWSELYSFALFKAMSHMLC>I<GYGRQAPESMTDIWLTMLSMIVGATCYAMF458
HCN3--------VNHSWGRQYSHALFKAMSHMLC>I<GYGQQAPVGMPDVWLTMLSMIVGATCYAMF342
HCN4--------VNNSWGKQYSYALFKAMSHMLC>I<GYGRQAPVGMSDVWLTMLSMIVGATCYAMF509
cons                              > <                              

See full Alignment of Paralogues


Known Variants in KCNH2

ProteinCDSDisease ClassificationDiseasedbSNP linksEffect Prediction
p.V625Ec.1874T>A Inherited ArrhythmiaLQTSSIFT: deleterious
Polyphen: probably damaging
ReportsInherited ArrhythmiaLQTS The use of genotype-phenotype correlations in mutation analysis for the long QT syndrome. J Med Genet. 2003 40(2):141-5. 12566525
Inherited ArrhythmiaLQTS Genetic testing for long-QT syndrome: distinguishing pathogenic mutations from benign variants. Circulation. 2009 120(18):1752-60. 19841300
Inherited ArrhythmiaLQTS Phylogenetic and physicochemical analyses enhance the classification of rare nonsynonymous single nucleotide variants in type 1 and 2 long-QT syndrome. Circ Cardiovasc Genet. 2012 5(5):519-28. doi: 10.1161/CIRCGENETICS.112.963785. 22949429
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
p.V625Ac.1874T>C 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