NM_007194.4(CHEK2):c.230A>T (p.Asp77Val) AND Familial cancer of breast

Germline classification:: Uncertain significance (2 submissions)
Last evaluated:: Oct 5, 2023
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:: RCV001237093.8

Allele description [Variation Report for NM_007194.4(CHEK2):c.230A>T (p.Asp77Val)]

NM_007194.4(CHEK2):c.230A>T (p.Asp77Val)

Gene:

CHEK2:checkpoint kinase 2 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

22q12.1

Genomic location:

Preferred name:

NM_007194.4(CHEK2):c.230A>T (p.Asp77Val)

HGVS:

NC_000022.11:g.28734492T>A
NG_008150.2:g.12375A>T
NM_001005735.2:c.230A>T
NM_001257387.2:c.-548A>T
NM_001349956.2:c.230A>T
NM_007194.4:c.230A>TMANE SELECT
NM_145862.2:c.230A>T
NP_001005735.1:p.Asp77Val
NP_001336885.1:p.Asp77Val
NP_009125.1:p.Asp77Val
NP_665861.1:p.Asp77Val
LRG_302t1:c.230A>T
LRG_302:g.12375A>T
LRG_302p1:p.Asp77Val
NC_000022.10:g.29130480T>A
NG_008150.1:g.12343A>T
NM_007194.3:c.230A>T

Protein change:

D77V

Links:

dbSNP: rs1555932352

NCBI 1000 Genomes Browser:

rs1555932352

Molecular consequence:

NM_001257387.2:c.-548A>T - 5 prime UTR variant - [Sequence Ontology: SO:0001623]
NM_001005735.2:c.230A>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001349956.2:c.230A>T - missense variant - [Sequence Ontology: SO:0001583]
NM_007194.4:c.230A>T - missense variant - [Sequence Ontology: SO:0001583]
NM_145862.2:c.230A>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Familial cancer of breast
Synonyms:: Breast cancer, familial; Hereditary breast cancer
Identifiers:: MONDO: MONDO:0016419; MedGen: C0346153; OMIM: 114480

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001409843	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Oct 5, 2023)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV004217657	Baylor Genetics	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Jun 16, 2023)	unknown	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

SCV001409843

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Oct 5, 2023)

germline

clinical testing

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

SCV004217657

Baylor Genetics

criteria provided, single submitter

(ACMG Guidelines, 2015)

Uncertain significance
(Jun 16, 2023)

unknown

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
not provided	unknown	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

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

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 Labcorp Genetics (formerly Invitae), Labcorp, SCV001409843.5

#	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 aspartic acid, which is acidic and polar, with valine, which is neutral and non-polar, at codon 77 of the CHEK2 protein (p.Asp77Val). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with CHEK2-related conditions. ClinVar contains an entry for this variant (Variation ID: 481099). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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

From Baylor Genetics, SCV004217657.1

#	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	unknown	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Oct 8, 2024

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