chr13-32355341-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000059.4(BRCA2):c.7435+53C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0416 in 1,587,692 control chromosomes in the GnomAD database, including 2,142 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★★).

Frequency

Genomes: 𝑓 0.041 ( 220 hom., cov: 31)

Exomes 𝑓: 0.042 ( 1922 hom. )

Consequence

BRCA2
NM_000059.4 intron

Scores

Clinical Significance

Benign reviewed by expert panel B:12O:1

Conservation

PhyloP100: -0.300

Publications

17 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):

BRCA2-related cancer predisposition
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
breast-ovarian cancer, familial, susceptibility to, 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
Fanconi anemia complementation group D1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics
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 -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.91).

BP6

Variant 13-32355341-C-T is Benign according to our data. Variant chr13-32355341-C-T is described in ClinVar as Benign. ClinVar VariationId is 126136.Status of the report is reviewed_by_expert_panel, 3 stars.

BA1

GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.107 is higher than 0.05.

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	UniProt
BRCA2	NM_000059.4	MANE Select	c.7435+53C>T	intron	N/A	NP_000050.3	A0A7P0T9D7
BRCA2	NM_001432077.1		c.7435+53C>T	intron	N/A	NP_001419006.1	A0A7P0T9D7
BRCA2	NM_001406720.1		c.7435+53C>T	intron	N/A	NP_001393649.1	A0A8V8TPZ2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
BRCA2	ENST00000380152.8	TSL:5 MANE Select	c.7435+53C>T	intron	N/A	ENSP00000369497.3	P51587
BRCA2	ENST00000544455.6	TSL:1	c.7435+53C>T	intron	N/A	ENSP00000439902.1	P51587
BRCA2	ENST00000530893.7	TSL:1	c.7066+53C>T	intron	N/A	ENSP00000499438.2	A0A590UJI7

Frequencies

GnomAD3 genomes

AF:

0.0405

AC:

6164

AN:

152018

Hom.:

217

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0206

Gnomad AMI

AF:

0.0264

Gnomad AMR

AF:

0.0974

Gnomad ASJ

AF:

0.0430

Gnomad EAS

AF:

0.101

Gnomad SAS

AF:

0.115

Gnomad FIN

AF:

0.0146

Gnomad MID

AF:

0.0380

Gnomad NFE

AF:

0.0340

Gnomad OTH

AF:

0.0474

GnomAD4 exome

AF:

0.0417

AC:

59897

AN:

1435556

Hom.:

1922

Cov.:

AF XY:

0.0444

AC XY:

31734

AN XY:

714762

show subpopulations

African (AFR)

AF:

0.0197

AC:

646

AN:

32790

American (AMR)

AF:

0.0752

AC:

3310

AN:

44036

Ashkenazi Jewish (ASJ)

AF:

0.0401

AC:

1039

AN:

25886

East Asian (EAS)

AF:

0.122

AC:

4756

AN:

39080

South Asian (SAS)

AF:

0.114

AC:

9614

AN:

84048

European-Finnish (FIN)

AF:

0.0149

AC:

787

AN:

52902

Middle Eastern (MID)

AF:

0.0560

AC:

310

AN:

5532

European-Non Finnish (NFE)

AF:

0.0337

AC:

36747

AN:

1091870

Other (OTH)

AF:

0.0452

AC:

2688

AN:

59412

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

2665

5330

7995

10660

13325

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

1480

2960

4440

5920

7400

<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:

0.0406

AC:

6183

AN:

152136

Hom.:

220

Cov.:

AF XY:

0.0433

AC XY:

3223

AN XY:

74396

show subpopulations

African (AFR)

AF:

0.0206

AC:

856

AN:

41506

American (AMR)

AF:

0.0981

AC:

1498

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.0430

AC:

149

AN:

3468

East Asian (EAS)

AF:

0.101

AC:

521

AN:

5176

South Asian (SAS)

AF:

0.115

AC:

553

AN:

4822

European-Finnish (FIN)

AF:

0.0146

AC:

154

AN:

10578

Middle Eastern (MID)

AF:

0.0340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0340

AC:

2314

AN:

67996

Other (OTH)

AF:

0.0492

AC:

104

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

303

606

908

1211

1514

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

148

222

296

370

<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:

0.0343

Hom.:

Bravo

AF:

0.0419

Asia WGS

AF:

0.109

AC:

378

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign

Revision:reviewed by expert panel

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (4)

Breast-ovarian cancer, familial, susceptibility to, 2 (4)

Hereditary cancer-predisposing syndrome (2)

not provided (2)

Hereditary breast ovarian cancer syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.91

CADD

Benign

3.5

(source)

DANN

Benign

0.54

PhyloP100

-0.30

Mutation Taster

=100/0

polymorphism (auto)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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

Computational scores

Splicing

Publications

Other links and lift over