{{Rsnum
|rsid=12720441
|Gene=KCNH2
|Chromosome=7
|position=150950216
|Orientation=minus
|ReferenceAllele=C
|MissenseAllele=T
|Status=Deleted
|GMAF=0.0004591
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=KCNH2
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 100.0 | 0.0 | 0.0
| HCB | 100.0 | 0.0 | 0.0
| JPT | 100.0 | 0.0 | 0.0
| YRI | 100.0 | 0.0 | 0.0
| ASW | 0.0 | 0.0 | 0.0
| CHB | 100.0 | 0.0 | 0.0
| CHD | 0.0 | 0.0 | 0.0
| GIH | 0.0 | 0.0 | 0.0
| LWK | 0.0 | 0.0 | 0.0
| MEX | 0.0 | 0.0 | 0.0
| MKK | 0.0 | 0.0 | 0.0
| TSI | 0.0 | 0.0 | 0.0
| HapMapRevision=28
}}
{{omim
|desc=LONG QT SYNDROME 2, ACQUIRED, SUSCEPTIBILITY TO
|id=152427
|rsnum=12720441
|variant=0014
}}

{{PharmGKB
|RSID=rs12720441
|Name_s=R784W
|Gene_s=KCNH2
|Feature=Exon/NonSyn
|Evidence=PubMed ID:11997281
|Annotation=Mutation may be responsible for response to amiodarone
|Drugs=amiodarone
|Drug Classes=
|Diseases=
|Curation Level=Curated
|PharmGKB Accession ID=PA164740899
}}{{ClinVar
|rsid=12720441
|Reversed=1
|FwdREF=C
|FwdALT=G,T
|REF=G
|ALT=A,C
|RSPOS=150647304
|CHROM=7
|GMAF=0.0005
|dbSNPBuildID=127
|SSR=0
|SAO=1
|VP=0x050378000000000117110100
|GENEINFO=KCNH2:3757
|GENE_NAME=KCNH2
|GENE_ID=3757
|WGT=0
|VC=SNV
|CLNALLE=1
|CLNHGVS=NC_000007.13:g.150647304G>A
|CLNORIGIN=1
|CLNSIG=255
|Tags=RV;PM;TPA;PMC;S3D;SLO;GNO;KGPhase1;KGPROD;OTHERKG;PH3;LSD;OM
|CAF=0.9995; 0.0004591
|CLNACC=RCV000015514.1; RCV000058108.1
|CLNDBN=Long QT syndrome 2, acquired, susceptibility to; not provided
|CLNSRC=OMIM Allelic Variant
|CLNSRCID=152427.0014
|COMMON=0
|Disease=Long QT syndrome 2; not provided
}}{{PMID Auto
|PMID=19214780
|Title=In silico investigations on functional and haplotype tag SNPs associated with congenital long QT syndromes (LQTSs).
|OA=1
}}

{{PMID Auto
|PMID=14760488
|Title=Genetic variations of KCNQ1, KCNH2, SCN5A, KCNE1, and KCNE2 in drug-induced long QT syndrome patients.
}}

{{PMID Auto
|PMID=15840476
|Title=Compendium of cardiac channel mutations in 541 consecutive unrelated patients referred for long QT syndrome genetic testing.
}}

{{PMID Auto
|PMID=19841300
|Title=Genetic testing for long-QT syndrome: distinguishing pathogenic mutations from benign variants.
|OA=1
}}