NM_004004.6(GJB2):c.14C>T (p.Thr5Met) AND not provided

Germline classification:: Uncertain significance (2 submissions)
Last evaluated:: Oct 27, 2021
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:: RCV000711345.6

Allele description [Variation Report for NM_004004.6(GJB2):c.14C>T (p.Thr5Met)]

NM_004004.6(GJB2):c.14C>T (p.Thr5Met)

Gene:

GJB2:gap junction protein beta 2 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

13q12.11

Genomic location:

Preferred name:

NM_004004.6(GJB2):c.14C>T (p.Thr5Met)

HGVS:

NC_000013.11:g.20189568G>A
NG_008358.1:g.8408C>T
NM_004004.6:c.14C>TMANE SELECT
NP_003995.2:p.Thr5Met
LRG_1350t1:c.14C>T
LRG_1350:g.8408C>T
LRG_1350p1:p.Thr5Met
NC_000013.10:g.20763707G>A
NM_004004.5:c.14C>T

Protein change:

T5M

Links:

dbSNP: rs781085903

NCBI 1000 Genomes Browser:

rs781085903

Molecular consequence:

NM_004004.6:c.14C>T - missense variant - [Sequence Ontology: SO:0001583]

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
SCV000841696	Athena Diagnostics	criteria provided, single submitter (Athena Diagnostics Criteria)	Uncertain significance (Dec 11, 2017)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV002168360	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Oct 27, 2021)	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

SCV000841696

Athena Diagnostics

criteria provided, single submitter

(Athena Diagnostics Criteria)

Uncertain significance
(Dec 11, 2017)

germline

clinical testing

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

SCV002168360

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Oct 27, 2021)

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

A Standardized DNA Variant Scoring System for Pathogenicity Assessments in Mendelian Disorders.

Karbassi I, Maston GA, Love A, DiVincenzo C, Braastad CD, Elzinga CD, Bright AR, Previte D, Zhang K, Rowland CM, McCarthy M, Lapierre JL, Dubois F, Medeiros KA, Batish SD, Jones J, Liaquat K, Hoffman CA, Jaremko M, Wang Z, Sun W, Buller-Burckle A, et al.

Hum Mutat. 2016 Jan;37(1):127-34. doi: 10.1002/humu.22918. Epub 2015 Oct 29.

PubMed [citation]

PMID:: 26467025
PMCID:: PMC4737317

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Details of each submission

From Athena Diagnostics, SCV000841696.1

#	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

From Labcorp Genetics (formerly Invitae), Labcorp, SCV002168360.2

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

Description

This sequence change replaces threonine, a(n) neutral and polar amino acid, with methionine, a(n) neutral and non-polar amino acid, at codon 5 of the GJB2 protein (p.Thr5Met). This variant is present in population databases (rs781085903, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with GJB2-related conditions. ClinVar contains an entry for this variant (Variation ID: 585738). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been 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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