NM_000083.3(CLCN1):c.1903A>G (p.Lys635Glu) AND not provided

Germline classification:: Uncertain significance (2 submissions)
Last evaluated:: Feb 29, 2020
Review status:: 2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts

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:: RCV000519934.5

Allele description [Variation Report for NM_000083.3(CLCN1):c.1903A>G (p.Lys635Glu)]

NM_000083.3(CLCN1):c.1903A>G (p.Lys635Glu)

Gene:

CLCN1:chloride voltage-gated channel 1 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

7q34

Genomic location:

Preferred name:

NM_000083.3(CLCN1):c.1903A>G (p.Lys635Glu)

HGVS:

NC_000007.14:g.143342478A>G
NG_009815.2:g.31353A>G
NM_000083.3:c.1903A>GMANE SELECT
NP_000074.3:p.Lys635Glu
NC_000007.13:g.143039571A>G
NG_009815.1:g.31353A>G
NM_000083.2:c.1903A>G
NR_046453.2:n.1858A>G

Protein change:

K635E

Links:

dbSNP: rs772430525

NCBI 1000 Genomes Browser:

rs772430525

Molecular consequence:

NM_000083.3:c.1903A>G - missense variant - [Sequence Ontology: SO:0001583]
NR_046453.2:n.1858A>G - non-coding transcript variant - [Sequence Ontology: SO:0001619]

Condition(s)

Synonyms:: none provided
Identifiers:: MedGen: C3661900

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000620407	GeneDx	criteria provided, single submitter (GeneDx Variant Classification (06012015))	Uncertain significance (Aug 30, 2017)	germline	clinical testing	Citation Link,
SCV003830688	Revvity Omics, Revvity	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Feb 29, 2020)	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

SCV000620407

GeneDx

criteria provided, single submitter

(GeneDx Variant Classification (06012015))

Uncertain significance
(Aug 30, 2017)

germline

clinical testing

Citation Link,

SCV003830688

Revvity Omics, Revvity

criteria provided, single submitter

(ACMG Guidelines, 2015)

Uncertain significance
(Feb 29, 2020)

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	yes	not provided	not provided	not provided	not provided	not provided	clinical testing
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 GeneDx, SCV000620407.2

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

Description

The K635E variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. The K635E variant is not observed at a significant frequency in large population cohorts (Lek et al., 2016; 1000 Genomes Consortium et al., 2015; Exome Variant Server). This variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position that is conserved across species. In silico analysis predicts this variant is probably damaging to the protein structure/function.

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

From Revvity Omics, Revvity, SCV003830688.3

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

#	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 6, 2025

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