NM_007294.4:c.212+23T>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_007294.4(BRCA1):c.212+23T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00186 in 1,481,922 control chromosomes in the GnomAD database, including 35 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★★).

Frequency

Genomes: 𝑓 0.0094 ( 18 hom., cov: 32)

Exomes 𝑓: 0.00099 ( 17 hom. )

Consequence

BRCA1
NM_007294.4 intron

Scores

Clinical Significance

Benign reviewed by expert panel B:13

Conservation

PhyloP100: 1.00

Publications

5 publications found

Variant links:

COSMIC-nc: COSV104621544

Genes affected

BRCA1 (HGNC:1100): (BRCA1 DNA repair associated) This gene encodes a 190 kD nuclear phosphoprotein that plays a role in maintaining genomic stability, and it also acts as a tumor suppressor. The BRCA1 gene contains 22 exons spanning about 110 kb of DNA. The encoded protein combines with other tumor suppressors, DNA damage sensors, and signal transducers to form a large multi-subunit protein complex known as the BRCA1-associated genome surveillance complex (BASC). This gene product associates with RNA polymerase II, and through the C-terminal domain, also interacts with histone deacetylase complexes. This protein thus plays a role in transcription, DNA repair of double-stranded breaks, and recombination. Mutations in this gene are responsible for approximately 40% of inherited breast cancers and more than 80% of inherited breast and ovarian cancers. Alternative splicing plays a role in modulating the subcellular localization and physiological function of this gene. Many alternatively spliced transcript variants, some of which are disease-associated mutations, have been described for this gene, but the full-length natures of only some of these variants has been described. A related pseudogene, which is also located on chromosome 17, has been identified. [provided by RefSeq, May 2020]

BRCA1 Gene-Disease associations (from GenCC):

breast-ovarian cancer, familial, susceptibility to, 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
Fanconi anemia, complementation group S
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics
pancreatic cancer, susceptibility to, 4
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

BRCA1 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=-0.77).

BP6

Variant 17-43106433-A-T is Benign according to our data. Variant chr17-43106433-A-T is described in ClinVar as Benign. ClinVar VariationId is 188404.Status of the report is reviewed_by_expert_panel, 3 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00941 (1434/152352) while in subpopulation AFR AF = 0.0325 (1353/41582). AF 95% confidence interval is 0.0311. There are 18 homozygotes in GnomAd4. There are 688 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 18 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BRCA1	NM_007294.4 link	c.212+23T>A		intron_variant	Intron 4 of 22	ENST00000357654.9	NP_009225.1	P38398-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BRCA1	ENST00000357654.9 link	c.212+23T>A		intron_variant	Intron 4 of 22	1	NM_007294.4	ENSP00000350283.3		P38398-1

Frequencies

GnomAD3 genomes

AF:

0.00937

AC:

1427

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0325

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00360

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00812

GnomAD2 exomes

AF:

0.00252

AC:

622

AN:

246766

AF XY:

0.00184

show subpopulations

Gnomad AFR exome

AF:

0.0346

Gnomad AMR exome

AF:

0.00178

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000625

Gnomad OTH exome

AF:

0.000831

GnomAD4 exome

AF:

0.000993

AC:

1320

AN:

1329570

Hom.:

Cov.:

AF XY:

0.000868

AC XY:

579

AN XY:

667356

show subpopulations

African (AFR)

AF:

0.0341

AC:

1046

AN:

30692

American (AMR)

AF:

0.00199

AC:

AN:

43792

Ashkenazi Jewish (ASJ)

AF:

0.0000398

AC:

AN:

25110

East Asian (EAS)

AF:

0.00

AC:

AN:

38884

South Asian (SAS)

AF:

0.0000616

AC:

AN:

81108

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53036

Middle Eastern (MID)

AF:

0.00184

AC:

AN:

4902

European-Non Finnish (NFE)

AF:

0.0000492

AC:

AN:

996154

Other (OTH)

AF:

0.00220

AC:

123

AN:

55892

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

Heterozygous variant carriers

112

168

224

280

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

108

144

180

<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:

0.00941

AC:

1434

AN:

152352

Hom.:

Cov.:

AF XY:

0.00923

AC XY:

688

AN XY:

74500

show subpopulations

African (AFR)

AF:

0.0325

AC:

1353

AN:

41582

American (AMR)

AF:

0.00360

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.000207

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68040

Other (OTH)

AF:

0.00803

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

136

204

272

340

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.00474

Hom.:

Bravo

AF:

0.0111

Asia WGS

AF:

0.00173

AC:

AN:

3474

ClinVar

Significance: Benign

Submissions summary: Benign:13

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

not provided

Benign:4

Oct 15, 2019

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

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

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Mar 03, 2015

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

not specified

Benign:3

Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Mar 04, 2025

Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Breast-ovarian cancer, familial, susceptibility to, 1

Benign:3

Nov 03, 2014

Michigan Medical Genetics Laboratories, University of Michigan

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jul 07, 2023

KCCC/NGS Laboratory, Kuwait Cancer Control Center

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 12, 2015

Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA)

Significance:Benign

Review Status:reviewed by expert panel

Collection Method:curation

Class 1 not pathogenic based on frequency >1% in an outbred sampleset. Frequency 0.06301 (African), derived from 1000 genomes (2012-04-30). -

Hereditary breast ovarian cancer syndrome

Benign:2

Apr 19, 2022

National Health Laboratory Service, Universitas Academic Hospital and University of the Free State

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Feb 14, 2017

Institute for Biomarker Research, Medical Diagnostic Laboratories, L.L.C.

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Hereditary cancer-predisposing syndrome

Benign:1

May 23, 2018

Institute for Biomarker Research, Medical Diagnostic Laboratories, L.L.C.

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.77

CADD

Benign

9.3

(source)

DANN

Benign

0.63

PhyloP100

1.0

Mutation Taster

=98/2

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

Splicevardb

1.0

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over