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NM_000238.4(KCNH2):c.2666T>C (p.Leu889Ser) AND Cardiovascular phenotype

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Jun 4, 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:
RCV003278431.2

Allele description [Variation Report for NM_000238.4(KCNH2):c.2666T>C (p.Leu889Ser)]

NM_000238.4(KCNH2):c.2666T>C (p.Leu889Ser)

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.2666T>C (p.Leu889Ser)
HGVS:
  • NC_000007.14:g.150948470A>G
  • NG_008916.1:g.34457T>C
  • NM_000238.4:c.2666T>CMANE SELECT
  • NM_001406753.1:c.2378T>C
  • NM_172057.3:c.1646T>C
  • NP_000229.1:p.Leu889Ser
  • NP_000229.1:p.Leu889Ser
  • NP_001393682.1:p.Leu793Ser
  • NP_742054.1:p.Leu549Ser
  • NP_742054.1:p.Leu549Ser
  • LRG_288t1:c.2666T>C
  • LRG_288t3:c.1646T>C
  • LRG_288:g.34457T>C
  • LRG_288p1:p.Leu889Ser
  • LRG_288p3:p.Leu549Ser
  • NC_000007.13:g.150645558A>G
  • NM_000238.3:c.2666T>C
  • NM_172057.2:c.1646T>C
  • NR_176254.1:n.3074T>C
  • NR_176255.1:n.1947T>C
Protein change:
L549S
Molecular consequence:
  • NM_000238.4:c.2666T>C - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001406753.1:c.2378T>C - missense variant - [Sequence Ontology: SO:0001583]
  • NM_172057.3:c.1646T>C - missense variant - [Sequence Ontology: SO:0001583]
  • NR_176254.1:n.3074T>C - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_176255.1:n.1947T>C - non-coding transcript variant - [Sequence Ontology: SO:0001619]

Condition(s)

Name:
Cardiovascular phenotype
Identifiers:
MedGen: CN230736

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV004009236Ambry Genetics
criteria provided, single submitter

(Ambry Variant Classification Scheme 2023)		Uncertain significance
(Jun 4, 2023) 		germlineclinical testing

Citation Link

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Details of each submission

From Ambry Genetics, SCV004009236.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided

Description

The p.L889S variant (also known as c.2666T>C), located in coding exon 11 of the KCNH2 gene, results from a T to C substitution at nucleotide position 2666. The leucine at codon 889 is replaced by serine, an amino acid with dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: May 1, 2024