Paralogue Annotation for KCNH2 residue 785

Residue details

Gene: KCNH2
Reference Sequences: LRG: LRG_288, Ensembl variant: ENST00000262186 / ENSP00000262186
Amino Acid Position: 785
Reference Amino Acid: G - Glycine
Protein Domain: C-terminus


Paralogue Variants mapped to KCNH2 residue 785

ParalogueVariantAssociated DiseaseMapping QualityConsensusPubmed
CNGA3G525DColour-blindness, totalHigh9 11536077
CNGA3G525SLeber congenital amaurosisHigh9 26355662

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.



KCNH2AMKFKTTHAPPGDTLVHAGDLLTALYFISR>G<SIEILRG-D--V--VVAILGKNDIFGEPLN810
KCNH1AMEFQTVHCAPGDLIYHAGESVDSLCFVVS>G<SLEVIQD-D--E--VVAILGKGDVFGDVFW649
KCNH3SLALRPAFCTPGEYLIHQGDALQALYFVCS>G<SMEVLKG-G--T--VLAILGKGDLIGCELP650
KCNH4SLHIKTSFCAPGEYLLRRGDALQAHYYVCS>G<SLEVLRD-N--M--VLAILGKGDLIGADIP624
KCNH5AVEFQTIHCAPGDLIYHAGESVDALCFVVS>G<SLEVIQD-D--E--VVAILGKGDVFGDIFW618
KCNH6AVKFKTTHAPPGDTLVHLGDVLSTLYFISR>G<SIEILRD-D--V--VVAILGKNDIFGEPVS662
KCNH7AMKFKTTHAPPGDTLVHCGDVLTALYFLSR>G<SIEILKD-D--I--VVAILGKNDIFGEMVH813
KCNH8SLHIKTSFCAPGEYLLRQGDALQAIYFVCS>G<SMEVLKD-S--M--VLAILGKGDLIGANLS619
CNGA1VLKLQPQVYSPGDYICKKGDIGREMYIIKE>G<KLAVVAD-D--GVTQFVVLSDGSYFGEISI549
CNGA2VLKLRPQVFSPGDYICRKGDIGKEMYIIKE>G<KLAVVAD-D--GVTQYALLSAGSCFGEISI524
CNGA3VLKLRPTVFSPGDYICKKGDIGKEMYIINE>G<KLAVVAD-D--GVTQFVVLSDGSYFGEISI552
CNGA4VLKLQPQTYSPGEYVCRKGDIGQEMYIIRE>G<QLAVVAD-D--GITQYAVLGAGLYFGEISI418
CNGB1LKRLRSVVYLPNDYVCKKGEIGREMYIIQA>G<QVQVLGGPDGKS--VLVTLKAGSVFGEISL1033
CNGB3LLRLKSVLYLPGDFVCKKGEIGKEMYIIKH>G<EVQVLGGPDGTK--VLVTLKAGSVFGEISL595
HCN1LSKLRFEVFQPGDYIIREGAVGKKMYFIQH>G<VAGVITK-S--S--KEMKLTDGSYFGEICL543
HCN2LTKLKFEVFQPGDYIIREGTIGKKMYFIQH>G<VVSVLTK-G--N--KEMKLSDGSYFGEICL612
HCN3LTKLRFEVFQPGDLVVREGSVGRKMYFIQH>G<LLSVLAR-G--A--RDTRLTDGSYFGEICL496
HCN4LTKLRFEVFQPGDYIIREGTIGKKMYFIQH>G<VVSVLTK-G--N--KETKLADGSYFGEICL663
cons                              > <                              

See full Alignment of Paralogues


Known Variants in KCNH2

ProteinCDSDisease ClassificationDiseasedbSNP linksEffect Prediction
p.G785Ac.2354G>C Inherited ArrhythmiaLQTSSIFT: deleterious
Polyphen: probably damaging
ReportsInherited ArrhythmiaLQTS Contribution of inherited heart disease to sudden cardiac death in childhood. Pediatrics. 2007 120(4):e967-73. 17908752
p.G785Vc.2354G>T Inherited ArrhythmiaLQTSSIFT: deleterious
Polyphen: probably damaging
ReportsInherited ArrhythmiaLQTS Genotype-phenotype aspects of type 2 long QT syndrome. J Am Coll Cardiol. 2009 54(22):2052-62. 19926013
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.G785Sc.2353G>A Inherited ArrhythmiaLQTSSIFT:
Polyphen:
ReportsInherited ArrhythmiaLQTS Asymmetry of parental origin in long QT syndrome: preferential maternal transmission of KCNQ1 variants linked to channel dysfunction. Eur J Hum Genet. 2016 24(8):1160-6. doi: 10.1038/ejhg.2015.257. 26669661