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NM_000238.4(KCNH2):c.1071G>T (p.Glu357Asp) AND Long QT syndrome

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Jun 15, 2023
Review status:
1 star out of maximum of 4 stars
criteria provided, single submitter
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV004000017.2

Allele description [Variation Report for NM_000238.4(KCNH2):c.1071G>T (p.Glu357Asp)]

NM_000238.4(KCNH2):c.1071G>T (p.Glu357Asp)

Gene:
KCNH2:potassium voltage-gated channel subfamily H member 2 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
7q36.1
Genomic location:
Preferred name:
NM_000238.4(KCNH2):c.1071G>T (p.Glu357Asp)
HGVS:
  • NC_000007.14:g.150957348C>A
  • NG_008916.1:g.25579G>T
  • NM_000238.4:c.1071G>TMANE SELECT
  • NM_001406753.1:c.783G>T
  • NM_001406755.1:c.894G>T
  • NM_001406756.1:c.783G>T
  • NM_001406757.1:c.771G>T
  • NM_172056.3:c.1071G>T
  • NP_000229.1:p.Glu357Asp
  • NP_000229.1:p.Glu357Asp
  • NP_001393682.1:p.Glu261Asp
  • NP_001393684.1:p.Glu298Asp
  • NP_001393685.1:p.Glu261Asp
  • NP_001393686.1:p.Glu257Asp
  • NP_742053.1:p.Glu357Asp
  • NP_742053.1:p.Glu357Asp
  • LRG_288t1:c.1071G>T
  • LRG_288t2:c.1071G>T
  • LRG_288:g.25579G>T
  • LRG_288p1:p.Glu357Asp
  • LRG_288p2:p.Glu357Asp
  • NC_000007.13:g.150654436C>A
  • NM_000238.3:c.1071G>T
  • NM_172056.2:c.1071G>T
  • NR_176254.1:n.1479G>T
Protein change:
E257D
Links:
dbSNP: rs762016259
NCBI 1000 Genomes Browser:
rs762016259
Molecular consequence:
  • NM_000238.4:c.1071G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001406753.1:c.783G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001406755.1:c.894G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001406756.1:c.783G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001406757.1:c.771G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_172056.3:c.1071G>T - missense variant - [Sequence Ontology: SO:0001583]
Observations:
1

Condition(s)

Name:
Long QT syndrome (LQTS)
Identifiers:
MONDO: MONDO:0002442; MeSH: D008133; MedGen: C0023976

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV004844029All of Us Research Program, National Institutes of Health
criteria provided, single submitter

(ACMG Guidelines, 2015)		Uncertain Significance
(Jun 15, 2023) 		germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknown1not providednot provided108544not providedclinical testing

Citations

PubMed

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee..

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]
PMID:
25741868
PMCID:
PMC4544753

Details of each submission

From All of Us Research Program, National Institutes of Health, SCV004844029.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided1not providednot providedclinical testing PubMed (1)

Description

Variant of Uncertain Significance due to insufficient evidence: This variant is a missense variant located in the cytoplasmic domain of the KCNH2 protein. Computational prediction tools and conservation analyses are inconclusive regarding the impact of this variant on the protein function. Computational splicing tools suggest that this variant may not impact the RNA splicing. To our knowledge, functional assays have not been performed for this variant nor has the variant been reported in individuals affected with cardiovascular disease in the literature. This variant is rare in the general population and has been identified in 5/240212 chromosomes by the Genome Aggregation Database (gnomAD). Available evidence is insufficient to determine the pathogenicity of this variant conclusively.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknown108544not providednot provided1not providednot providednot provided

Last Updated: Oct 13, 2024