Paralogue Annotation for KCNH2 residue 693

Residue details

Gene: KCNH2
Reference Sequences: LRG: LRG_288, Ensembl variant: ENST00000262186 / ENSP00000262186
Amino Acid Position: 693
Reference Amino Acid: L - Leucine
Protein Domain: C-terminus


Paralogue Variants mapped to KCNH2 residue 693

ParalogueVariantAssociated DiseaseMapping QualityConsensusPubmed
CNGA3L433WAchromatopsiaHigh9 18445228

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.



KCNH2IQRLYSGTARYHTQMLRVREFIRFHQIPNP>L<RQRLEEYFQHAWSYTNGIDMNAVLKGFPEC723
KCNH1FQQMYANTNRYHEMLNSVRDFLKLYQVPKG>L<SERVMDYIVSTWSMSRGIDTEKVLQICPKD562
KCNH3IQRMYARRFLYHSRTRDLRDYIRIHRIPKP>L<KQRMLEYFQATWAVNNGIDTTELLQSLPDE564
KCNH4IQRMYSRRSLYHSRMKDLKDFIRVHRLPRP>L<KQRMLEYFQTTWAVNSGIDANELLRDFPDE538
KCNH5FQQMYANTNRYHEMLNNVRDFLKLYQVPKG>L<SERVMDYIVSTWSMSKGIDTEKVLSICPKD531
KCNH6IQRLYSGTARYHTQMLRVKEFIRFHQIPNP>L<RQRLEEYFQHAWSYTNGIDMNAVLKGFPEC575
KCNH7IQRLYSGTARYHMQMLRVKEFIRFHQIPNP>L<RQRLEEYFQHAWTYTNGIDMNMVLKGFPEC726
KCNH8IQRMYSRWSLYHTRTKDLKDFIRVHHLPQQ>L<KQRMLEYFQTTWSVNNGIDSNELLKDFPDE533
CNGA1ISNMNAARAEFQARIDAIKQYMHFRNVSKD>M<EKRVIKWFDYLWTNKKTVDEKEVLKYLPDK460
CNGA2ISNMNATRAEFQAKIDAVKHYMQFRKVSKG>M<EAKVIRWFDYLWTNKKTVDEREILKNLPAK435
CNGA3ISNMNASRAEFQAKIDSIKQYMQFRKVTKD>L<ETRVIRWFDYLWANKKTVDEKEVLKSLPDK463
CNGA4IYNMNTADAAFYPDHALVKKYMKLQHVNRK>L<ERRVIDWYQHLQINKKMTNEVAILQHLPER329
CNGB1VGAATAGQTYYRSCMDSTVKYMNFYKIPKS>V<QNRVKTWYEYTWHSQGMLDESELMVQLPDK943
CNGB3IGAATANQNYFRACMDDTIAYMNNYSIPKL>V<QKRVRTWYEYTWDSQRMLDESDLLKTLPTT505
HCN1IQSLDSSRRQYQEKYKQVEQYMSFHKLPAD>M<RQKIHDYYEHRYQG-KIFDEENILNELNDP456
HCN2IQSLDSSRRQYQEKYKQVEQYMSFHKLPAD>F<RQKIHDYYEHRYQG-KMFDEDSILGELNGP525
HCN3IQSLDSSRRQYQEKYKQVEQYMSFHKLPAD>T<RQRIHEYYEHRYQG-KMFDEESILGELSEP409
HCN4IQSLDSSRRQYQEKYKQVEQYMSFHKLPPD>T<RQRIHDYYEHRYQG-KMFDEESILGELSEP576
cons                              > <                              

See full Alignment of Paralogues


Known Variants in KCNH2

ProteinCDSDisease ClassificationDiseasedbSNP linksEffect Prediction
p.L693Pc.2078T>C Inherited ArrhythmiaLQTSSIFT: deleterious
Polyphen: probably damaging
ReportsInherited ArrhythmiaLQTS Spectrum and prevalence of mutations from the first 2,500 consecutive unrelated patients referred for the FAMILION long QT syndrome genetic test. Heart Rhythm. 2009 6(9):1297-303. 19716085
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