NM_000059.4(BRCA2):c.2657A>T (p.Asn886Ile) AND Hereditary breast ovarian cancer syndrome

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Aug 14, 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:: RCV001345499.7

Allele description [Variation Report for NM_000059.4(BRCA2):c.2657A>T (p.Asn886Ile)]

NM_000059.4(BRCA2):c.2657A>T (p.Asn886Ile)

Gene:

BRCA2:BRCA2 DNA repair associated [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

13q13.1

Genomic location:

Preferred name:

NM_000059.4(BRCA2):c.2657A>T (p.Asn886Ile)

HGVS:

NC_000013.11:g.32337012A>T
NG_012772.3:g.26533A>T
NM_000059.4:c.2657A>TMANE SELECT
NP_000050.2:p.Asn886Ile
NP_000050.3:p.Asn886Ile
LRG_293t1:c.2657A>T
LRG_293:g.26533A>T
LRG_293p1:p.Asn886Ile
NC_000013.10:g.32911149A>T
NM_000059.3:c.2657A>T
U43746.1:n.2885A>T

Protein change:

N886I

Links:

dbSNP: rs80358526

NCBI 1000 Genomes Browser:

rs80358526

Molecular consequence:

NM_000059.4:c.2657A>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Hereditary breast ovarian cancer syndrome
Synonyms:: Hereditary breast and ovarian cancer syndrome; Hereditary breast and ovarian cancer; Hereditary breast and ovarian cancer syndrome (HBOC); See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0003582; MeSH: D061325; MedGen: C0677776; Orphanet: 145

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001539622	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Aug 14, 2023)	germline	clinical testing	PubMed (3) [See all records that cite these PMIDs] 10923033, 21520333, 28492532

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV001539622

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Aug 14, 2023)

germline

clinical testing

PubMed (3)
[See all records that cite these PMIDs]

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

The breast cancer information core: database design, structure, and scope.

Szabo C, Masiello A, Ryan JF, Brody LC.

Hum Mutat. 2000;16(2):123-31.

PubMed [citation]

PMID:: 10923033

LOVD v.2.0: the next generation in gene variant databases.

Fokkema IF, Taschner PE, Schaafsma GC, Celli J, Laros JF, den Dunnen JT.

Hum Mutat. 2011 May;32(5):557-63. doi: 10.1002/humu.21438. Epub 2011 Feb 22.

PubMed [citation]

PMID:: 21520333

See all PubMed Citations (3)

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV001539622.4

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (3)

Description

This sequence change replaces asparagine, which is neutral and polar, with isoleucine, which is neutral and non-polar, at codon 886 of the BRCA2 protein (p.Asn886Ile). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with clinical features of BRCA2-related conditions (PMID: 10923033, 21520333). ClinVar contains an entry for this variant (Variation ID: 51323). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt BRCA2 protein function. 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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