NM_000218.3(KCNQ1):c.1882G>A (p.Gly628Ser) AND Cardiac arrhythmia

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Mar 1, 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:: RCV003591850.1

Allele description [Variation Report for NM_000218.3(KCNQ1):c.1882G>A (p.Gly628Ser)]

NM_000218.3(KCNQ1):c.1882G>A (p.Gly628Ser)

Genes:

KCNQ1-AS1:KCNQ1 antisense RNA 1 [Gene - HGNC]
KCNQ1:potassium voltage-gated channel subfamily Q member 1 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

11p15.4

Genomic location:

Preferred name:

NM_000218.3(KCNQ1):c.1882G>A (p.Gly628Ser)

HGVS:

NC_000011.10:g.2847854G>A
NG_008935.1:g.407864G>A
NM_000218.3:c.1882G>AMANE SELECT
NM_001406836.1:c.1786G>A
NM_001406837.1:c.1612G>A
NM_001406838.1:c.1342G>A
NM_001406839.1:c.394G>A
NM_181798.2:c.1501G>A
NP_000209.2:p.Gly628Ser
NP_000209.2:p.Gly628Ser
NP_001393765.1:p.Gly596Ser
NP_001393766.1:p.Gly538Ser
NP_001393767.1:p.Gly448Ser
NP_001393768.1:p.Gly132Ser
NP_861463.1:p.Gly501Ser
NP_861463.1:p.Gly501Ser
LRG_287t1:c.1882G>A
LRG_287t2:c.1501G>A
LRG_287:g.407864G>A
LRG_287p1:p.Gly628Ser
LRG_287p2:p.Gly501Ser
NC_000011.9:g.2869084G>A
NM_000218.2:c.1882G>A
NM_181798.1:c.1501G>A
NR_040711.2:n.1775G>A

Protein change:

G132S

Links:

dbSNP: rs745990205

NCBI 1000 Genomes Browser:

rs745990205

Molecular consequence:

NM_000218.3:c.1882G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001406836.1:c.1786G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001406837.1:c.1612G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001406838.1:c.1342G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001406839.1:c.394G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_181798.2:c.1501G>A - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Cardiac arrhythmia
Synonyms:: Cardiac rhythm disease
Identifiers:: EFO: EFO_0004269; MONDO: MONDO:0007263; MedGen: C0003811; Human Phenotype Ontology: HP:0011675

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV004358448	Color Diagnostics, LLC DBA Color Health	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Mar 1, 2023)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV004358448

Color Diagnostics, LLC DBA Color Health

criteria provided, single submitter

(ACMG Guidelines, 2015)

Uncertain significance
(Mar 1, 2023)

germline

clinical testing

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

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical 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 Color Diagnostics, LLC DBA Color Health, SCV004358448.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

This missense variant replaces glycine with serine at codon 628 of the KCNQ1 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with KCNQ1-related disorders in the literature. This variant has been identified in 7/215058 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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