Variant Gene Risk Allele Score vda Association Type Original DB Sentence supporting the association PMID PMID Year
dbSNP: rs199472918
rs199472918
0.720 GeneticVariation BEFREE A novel missense mutation (L552S) in the HERG channel, present in the homozygous state in the affected siblings and in the heterozygous state in their parents, as well as in 38 additional subjects from six LQTS families, was identified. 10841244

2000

dbSNP: rs199472918
rs199472918
0.720 GeneticVariation BEFREE Four presumable founder mutations (KCNQ1 G589D and IVS7-2A > G, HERG R176W and L552S) together account for as much as 73% of all established Finnish LQTS cases. 15176425

2004

dbSNP: rs28928904
rs28928904
0.720 GeneticVariation BEFREE Long QT syndrome-associated I593R mutation in HERG potassium channel activates ER stress pathways. 16244363

2005

dbSNP: rs28928904
rs28928904
0.720 GeneticVariation BEFREE The Ile593Arg mutation may result in a change in potassium selectivity and permeability leading to a loss of HERG function, thereby resulting in LQT. 8635257

1996

dbSNP: rs9333649
rs9333649
0.720 GeneticVariation BEFREE Novel characteristics of a trafficking-defective G572R-hERG channel linked to hereditary long QT syndrome. 20931094

2010

dbSNP: rs9333649
rs9333649
0.720 GeneticVariation BEFREE Long QT syndrome with a high mortality rate caused by a novel G572R missense mutation in KCNH2. 10735633

2000

dbSNP: rs1064795333
rs1064795333
0.710 GeneticVariation BEFREE Mutations in Danish patients with long QT syndrome and the identification of a large founder family with p.F29L in KCNH2. 24606995

2014

dbSNP: rs120074179
rs120074179
0.710 GeneticVariation BEFREE The second mutation, V254M in KCNQ1, co-segregated with higher QT intervals and symptoms in other family members, and was previously reported in another LQTS family. 12820704

2003

dbSNP: rs120074184
rs120074184
0.710 GeneticVariation BEFREE G314S, co-expressed with WT KCNQ1 and KCNE1, suppressed I(ks) currents in a dominant-negative manner, which is consistent with long QT syndrome in the members of the Chinese family carrying G314S KCNQ1 mutation. 19348785

2009

dbSNP: rs120074185
rs120074185
0.710 GeneticVariation BEFREE In the present study, we show that PIP2 affinity is reduced in three KCNQ1 mutant channels (R243H, R539W, and R555C) associated with the long QT syndrome. 15746441

2005

dbSNP: rs121912504
rs121912504
0.710 GeneticVariation BEFREE Screening in worms expressing hERG<sup>A561V</sup>, which carries a trafficking-defective mutation A561V known to associate with long-QT syndrome, identifies two functional correctors Prostratin and ingenol-3,20-dibenzoate. 30258187

2018

dbSNP: rs121912507
rs121912507
0.710 GeneticVariation BEFREE Isoform-specific dominant-negative effects associated with hERG1 G628S mutation in long QT syndrome. 22876326

2012

dbSNP: rs121912512
rs121912512
0.710 GeneticVariation BEFREE Direct bidirectional sequencing of long QT syndrome genes identified a previously unreported HERG missense mutation (R752Q). 12621127

2003

dbSNP: rs189014161
rs189014161
0.710 GeneticVariation BEFREE Two of the 13 patients (15%) who presented with QT prolongation and TdP were found to carry long QT syndrome mutations (KCNH2-R744X and SCN5A-E446K). 22338672

2012

dbSNP: rs193922365
rs193922365
0.710 GeneticVariation BEFREE The mutations A46T, R195W, and A302V have previously been associated with long-QT syndrome. 25786344

2015

dbSNP: rs199472730
rs199472730
0.710 GeneticVariation BEFREE The inconsistent association of the KCNQ1 S277L mutation with the clinical presentation suggests that additional genetic, epigenetic, or environmental factors play a role in defining the individual clinical LQTS phenotype. 21241800

2011

dbSNP: rs199472756
rs199472756
0.710 GeneticVariation BEFREE The present study was designed to determine the G325R ion channel phenotype and its association with the clinical LQTS presentation. 23000022

2012

dbSNP: rs199472765
rs199472765
0.710 GeneticVariation BEFREE Ion channel mechanisms related to sudden cardiac death in phenotype-negative long-QT syndrome genotype-phenotype correlations of the KCNQ1(S349W) mutation. 20662986

2011

dbSNP: rs199472776
rs199472776
0.710 GeneticVariation BEFREE Both KV7.1-A283T (16-week male) and KV7.1-R397W (16-week female) mutations were associated with marked KV7.1 loss-of-function consistent with in utero LQTS type 1, whereas the HERG1b-R25W mutation (33.2-week male) exhibited a loss of function consistent with in utero LQTS type 2. 23571586

2013

dbSNP: rs199472795
rs199472795
0.710 GeneticVariation BEFREE In the present study, we show that PIP2 affinity is reduced in three KCNQ1 mutant channels (R243H, R539W, and R555C) associated with the long QT syndrome. 15746441

2005

dbSNP: rs199472845
rs199472845
0.710 GeneticVariation BEFREE The eag domains with Y43A or R56Q (a LQTS locus) mutations showed less regulation of deactivation and less FRET, whereas eag domains restored regulation of deactivation gating to full-length Y43A or R56Q channels and showed FRET. 19651618

2009

dbSNP: rs199472916
rs199472916
0.710 GeneticVariation BEFREE In conclusion, CM-iPSC recapitulated the LQTS2 phenotype and our findings suggest that the R534C mutation in KCNH2 leads to a channel trafficking defect to the plasma membrane. 31844156

2019

dbSNP: rs199472924
rs199472924
0.710 GeneticVariation BEFREE The distinct HERG missense mutation L564P causes long QT syndrome in one French Canadian family. 10744792

2000

dbSNP: rs199472942
rs199472942
0.710 GeneticVariation BEFREE Compound heterozygosity for mutations Asp611-->Tyr in KCNQ1 and Asp609-->Gly in KCNH2 associated with severe long QT syndrome. 15500450

2005

dbSNP: rs199472968
rs199472968
0.710 GeneticVariation BEFREE Characterization of a novel missense mutation E637K in the pore-S6 loop of HERG in a patient with long QT syndrome. 12062363

2002