13-32326300-T-C

Variant names:

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_StrongBP6_Very_Strong

The NM_000059.4(BRCA2):c.516+18T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000647 in 1,607,078 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000059 ( 1 hom. )

Consequence

BRCA2
NM_000059.4 intron

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts U:1B:9

Conservation

PhyloP100: 0.500

Publications

1 publications found

Variant links:

Genes affected

BRCA2 (HGNC:1101): (BRCA2 DNA repair associated) Inherited mutations in BRCA1 and this gene, BRCA2, confer increased lifetime risk of developing breast or ovarian cancer. Both BRCA1 and BRCA2 are involved in maintenance of genome stability, specifically the homologous recombination pathway for double-strand DNA repair. The largest exon in both genes is exon 11, which harbors the most important and frequent mutations in breast cancer patients. The BRCA2 gene was found on chromosome 13q12.3 in human. The BRCA2 protein contains several copies of a 70 aa motif called the BRC motif, and these motifs mediate binding to the RAD51 recombinase which functions in DNA repair. BRCA2 is considered a tumor suppressor gene, as tumors with BRCA2 mutations generally exhibit loss of heterozygosity (LOH) of the wild-type allele. [provided by RefSeq, May 2020]

BRCA2 Gene-Disease associations (from GenCC):

breast-ovarian cancer, familial, susceptibility to, 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), ClinGen
Fanconi anemia complementation group D1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen, G2P
pancreatic cancer, susceptibility to, 2
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
sarcoma
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
hereditary breast ovarian cancer syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Fanconi anemia
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
medulloblastoma
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

BRCA2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.71).

BP6

Variant 13-32326300-T-C is Benign according to our data. Variant chr13-32326300-T-C is described in ClinVar as Benign. ClinVar VariationId is 51784.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000059.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
BRCA2	NM_000059.4	MANE Select	c.516+18T>C	intron	N/A	NP_000050.3
BRCA2	NM_001432077.1		c.516+18T>C	intron	N/A	NP_001419006.1
BRCA2	NM_001406720.1		c.516+18T>C	intron	N/A	NP_001393649.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
BRCA2	ENST00000380152.8	TSL:5 MANE Select	c.516+18T>C	intron	N/A	ENSP00000369497.3
BRCA2	ENST00000544455.6	TSL:1	c.516+18T>C	intron	N/A	ENSP00000439902.1
BRCA2	ENST00000530893.7	TSL:1	c.147+18T>C	intron	N/A	ENSP00000499438.2

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152252

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00327

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000300

AC:

AN:

250192

AF XY:

0.000288

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00387

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000492

GnomAD4 exome

AF:

0.0000591

AC:

AN:

1454708

Hom.:

Cov.:

AF XY:

0.0000470

AC XY:

AN XY:

724172

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33282

American (AMR)

AF:

0.0000448

AC:

AN:

44682

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26064

East Asian (EAS)

AF:

0.00162

AC:

AN:

39604

South Asian (SAS)

AF:

0.00

AC:

AN:

86038

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53338

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5654

European-Non Finnish (NFE)

AF:

0.00000181

AC:

AN:

1105898

Other (OTH)

AF:

0.000299

AC:

AN:

60148

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000118

AC:

AN:

152370

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74508

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41584

American (AMR)

AF:

0.00

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00327

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68040

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000528

Hom.:

Bravo

AF:

0.000147

Asia WGS

AF:

0.00144

AC:

AN:

3476

ClinVar

Significance: Benign

Submissions summary: Uncertain:1Benign:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Mar 04, 2025

Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Aug 16, 2014

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

not provided

Benign:3

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

Oct 30, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

Hereditary breast ovarian cancer syndrome

Benign:2

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Jul 06, 2015

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant Summary: This variant involves the alteration of a non-conserved nucleotide resulting in an intronic change. This variant is located at a position that is not widely known to affect splicing, and 4/5 splicing prediction programs via Alamut predict no significant effect on splicing and mutation taster predicts the variant to be a polymorphism. The variant was observed in the large and broad cohorts of the ExAC project at an allele frequency of 0.03%, predominantly observed in the East Asian subpopulation at a frequency of 0.46% including 1 homozygous occurrence. This frequency exceeds the maximal expected allele frequency for a pathogenic variant in BRCA2 (0.075%), suggesting this is a benign polymorphism found primarily in population(s) of East Asian origin. Multiple reputable databases/clinical labs have classified the variant as benign (GeneDx, Invitae). UMD lists variant in 3 individuals with classification of "3-UV" and one individual had co-occurrence with a deleterious BRCA2 variant c.1212delT (p.Asn404LysfsX26). Lastly, there was no observed effect on splicing via mini-gene assay (Thomassen_2011). Considering all, this variant is classified as benign.

Breast-ovarian cancer, familial, susceptibility to, 2

Uncertain:1

Nov 30, 1998

Breast Cancer Information Core (BIC) (BRCA2)

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

Hereditary cancer-predisposing syndrome

Benign:1

Nov 17, 2015

Color Diagnostics, LLC DBA Color Health

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.71

CADD

Benign

6.9

(source)

DANN

Benign

0.75

PhyloP100

0.50

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

Splicevardb

1.0

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over