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NM_000059.4(BRCA2):c.771_775del (p.Asn257fs) AND not provided

Germline classification:
Pathogenic (6 submissions)
Last evaluated:
Jul 31, 2024
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:
RCV000212208.28

Allele description [Variation Report for NM_000059.4(BRCA2):c.771_775del (p.Asn257fs)]

NM_000059.4(BRCA2):c.771_775del (p.Asn257fs)

Gene:
BRCA2:BRCA2 DNA repair associated [Gene - OMIM - HGNC]
Variant type:
Deletion
Cytogenetic location:
13q13.1
Genomic location:
Preferred name:
NM_000059.4(BRCA2):c.771_775del (p.Asn257fs)
Other names:
995del5
HGVS:
  • NC_000013.10:g.32905141_32905145del
  • NC_000013.11:g.32331008_32331012del
  • NG_012772.3:g.20529_20533del
  • NM_000059.4:c.771_775delMANE SELECT
  • NP_000050.3:p.Asn257fs
  • LRG_293:g.20529_20533del
  • NC_000013.10:g.32905141_32905145del
  • NC_000013.10:g.32905145_32905149del
  • NC_000013.10:g.32905145_32905149del
  • NC_000013.10:g.32905145_32905149delTCAAA
  • NM_000059.3:c.771_775delTCAAA
  • NM_000059.4:c.771_775delTCAAA
  • U43746.1:n.995_999delCAAAT
  • U43746.1:n.999_1003delTCAAA
  • p.Asn257Lysfs*17
  • p.N257KFS*17
  • p.N257KfsX17
Nucleotide change:
999del5
Links:
Breast Cancer Information Core (BIC) (BRCA2): 995&base_change=del CAAAT; Breast Cancer Information Core (BIC) (BRCA2): 999&base_change=del TCAAA; OMIM: 600185.0010; dbSNP: rs80359671
NCBI 1000 Genomes Browser:
rs80359671
Molecular consequence:
  • NM_000059.4:c.771_775del - frameshift variant - [Sequence Ontology: SO:0001589]
Observations:
3

Condition(s)

Synonyms:
none provided
Identifiers:
MedGen: C3661900

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV000210707GeneDx
criteria provided, single submitter

(GeneDx Variant Classification Process June 2021)
Pathogenic
(Aug 1, 2023)
germlineclinical testing

Citation Link,

SCV000887922Quest Diagnostics Nichols Institute San Juan Capistrano
criteria provided, single submitter

(Quest Diagnostics criteria)
Pathogenic
(Sep 29, 2020)
unknownclinical testing

PubMed (24)
[See all records that cite these PMIDs]

SCV001449839Clinical Genetics and Genomics, Karolinska University Hospital
criteria provided, single submitter

(ACMG Guidelines, 2015)
Pathogenic
(Dec 9, 2015)
germlineclinical testing

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

SCV002010326Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden
criteria provided, single submitter

(ACMG Guidelines, 2015)
Pathogenic
(Nov 3, 2021)
germlineclinical testing

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

SCV002550262Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital
criteria provided, single submitter

(ACMG Guidelines, 2015)
Pathogenic
(Jul 31, 2024)
germlineclinical testing

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

SCV005199574Clinical Genetics Laboratory, Skane University Hospital Lund
criteria provided, single submitter

(ACMG Guidelines, 2015)
Pathogenic
(Oct 13, 2023)
germlineclinical testing

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

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineyes3not providednot providednot providednot providedclinical testing
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing
not providedunknownunknownnot providednot providednot providednot providednot providedclinical testing
not providedgermlinenot providednot providednot providednot providednot providednot providedclinical testing

Citations

PubMed

BRCA2, but not BRCA1, mutations account for familial ovarian cancer in Iceland: a population-based study.

Rafnar T, Benediktsdottir KR, Eldon BJ, Gestsson T, Saemundsson H, Olafsson K, Salvarsdottir A, Steingrimsson E, Thorlacius S.

Eur J Cancer. 2004 Dec;40(18):2788-93.

PubMed [citation]
PMID:
15571962

Patterns and functional implications of rare germline variants across 12 cancer types.

Lu C, Xie M, Wendl MC, Wang J, McLellan MD, Leiserson MD, Huang KL, Wyczalkowski MA, Jayasinghe R, Banerjee T, Ning J, Tripathi P, Zhang Q, Niu B, Ye K, Schmidt HK, Fulton RS, McMichael JF, Batra P, Kandoth C, Bharadwaj M, Koboldt DC, et al.

Nat Commun. 2015 Dec 22;6:10086. doi: 10.1038/ncomms10086.

PubMed [citation]
PMID:
26689913
PMCID:
PMC4703835
See all PubMed Citations (25)

Details of each submission

From GeneDx, SCV000210707.17

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided

Description

Frameshift variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Published functional studies demonstrate a damaging effect: shown in expression studies to be extremely unstable and to impact cytokinesis (Mikaelsdottir et al., 2004; Jonsdottir et al., 2009); Reported as a founder pathogenic variant in Iceland, accounting for 7-8% of all breast and ovarian cancer in the country (Johannesdottir et al., 1996; Thorlacius et al., 1997; Jonsdottir et al., 2009); Observed in individuals with a personal or family history consistent with pathogenic variants in this gene (Tavtigian et al., 1996; Thorlacius et al., 1997; Azzollini et al., 2017; Chan et al., 2018; Bhaskaran et al., 2019); Truncating variants in this gene are considered pathogenic by a well-established clinical consortium and/or database; Not observed at significant frequency in large population cohorts (gnomAD); Also known as 999_1003del; This variant is associated with the following publications: (PMID: 28199346, 23857704, 8589730, 19478387, 8706004, 23747895, 9150155, 27537391, 28235830, 27062684, 29339979, 10807692, 30720243, 30702160, 30093976, 31159747, 31957001, 29625052, 26689913, 30787465, 31723001, 30350268, 31825140, 34254208, 32341426, 9802270, 30875412, 15571962, 34645131, 15217494)

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot providednot providednot providednot providednot provided

From Quest Diagnostics Nichols Institute San Juan Capistrano, SCV000887922.3

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (24)

Description

This frameshift variant alters the translational reading frame of the BRCA2 mRNA and causes the premature termination of BRCA2 protein synthesis. In the published literature, the variant has been reported in individuals affected with breast cancer and has been described as a pathogenic founder variant in the Icelandic population (PMIDs: 31957001 (2020), 30093976 (2018), 23857704 (2013), and 17591843 (2007)). The frequency of this variant in the general population, 0.000092 (2/21636 chromosomes, http://gnomad.broadinstitute.org), is consistent with pathogenicity. Based on the available information, this variant is classified as pathogenic.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1unknownunknownnot providednot providednot providednot providednot providednot providednot provided

From Clinical Genetics and Genomics, Karolinska University Hospital, SCV001449839.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided3not providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot provided3not providednot providednot provided

From Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden, SCV002010326.3

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlinenot providednot providednot providednot providednot providednot providednot providednot provided

From Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital, SCV002550262.6

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Clinical Genetics Laboratory, Skane University Hospital Lund, SCV005199574.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Nov 3, 2024