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NM_000238.4(KCNH2):c.397del (p.Met133fs) AND Cardiovascular phenotype

Germline classification:
Pathogenic (1 submission)
Last evaluated:
Jun 13, 2022
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:
RCV002375537.2

Allele description [Variation Report for NM_000238.4(KCNH2):c.397del (p.Met133fs)]

NM_000238.4(KCNH2):c.397del (p.Met133fs)

Gene:
KCNH2:potassium voltage-gated channel subfamily H member 2 [Gene - OMIM - HGNC]
Variant type:
Deletion
Cytogenetic location:
7q36.1
Genomic location:
Preferred name:
NM_000238.4(KCNH2):c.397del (p.Met133fs)
HGVS:
  • NC_000007.14:g.150959647del
  • NG_008916.1:g.23280del
  • NM_000238.4:c.397delMANE SELECT
  • NM_001406753.1:c.109delA
  • NM_001406755.1:c.220delA
  • NM_001406756.1:c.109delA
  • NM_001406757.1:c.97delA
  • NM_172056.3:c.397delA
  • NP_000229.1:p.Met133Trpfs
  • NP_000229.1:p.Met133fs
  • NP_001393682.1:p.Met37Trpfs
  • NP_001393684.1:p.Met74Trpfs
  • NP_001393685.1:p.Met37Trpfs
  • NP_001393686.1:p.Met33Trpfs
  • NP_742053.1:p.Met133Trpfs
  • NP_742053.1:p.Met133fs
  • LRG_288t1:c.397del
  • LRG_288t2:c.397del
  • LRG_288:g.23280del
  • LRG_288p1:p.Met133Trpfs
  • LRG_288p2:p.Met133fs
  • NC_000007.13:g.150656735del
  • NM_000238.3:c.397delA
  • NM_172056.2:c.397del
  • NR_176254.1:n.805delA
Protein change:
M133fs
Molecular consequence:
  • NM_000238.4:c.397del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001406753.1:c.109delA - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001406755.1:c.220delA - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001406756.1:c.109delA - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001406757.1:c.97delA - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_172056.3:c.397delA - frameshift variant - [Sequence Ontology: SO:0001589]

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
SCV002625178Ambry Genetics
criteria provided, single submitter

(Ambry Variant Classification Scheme 2023)		Pathogenic
(Jun 13, 2022) 		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, SCV002625178.2

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

Description

The c.397delA pathogenic mutation, located in coding exon 3 of the KCNH2 gene, results from a deletion of one nucleotide at nucleotide position 397, causing a translational frameshift with a predicted alternate stop codon (p.M133Wfs*33). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation.

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

Last Updated: May 1, 2024