17-43093054-G-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4BP6_Very_Strong

The NM_007294.4(BRCA1):c.2477C>A(p.Thr826Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000341 in 1,613,812 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 (★★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T826A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00036 ( 1 hom. )

Consequence

BRCA1
NM_007294.4 missense

Scores

Clinical Significance

Benign reviewed by expert panel U:3B:29

Conservation

PhyloP100: 0.182

Publications

40 publications found

Variant links:

COSMIC-nc: COSV99066389

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):

BRCA1-related cancer predisposition
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
breast-ovarian cancer, familial, susceptibility to, 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
Fanconi anemia, complementation group S
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, LIMITED Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae), 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 -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.27411184).

BP6

Variant 17-43093054-G-T is Benign according to our data. Variant chr17-43093054-G-T is described in ClinVar as Benign. ClinVar VariationId is 37473.Status of the report is reviewed_by_expert_panel, 3 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_007294.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
BRCA1	NM_007294.4	MANE Select	c.2477C>A	p.Thr826Lys	missense	Exon 10 of 23	NP_009225.1	P38398-1
BRCA1	NM_001407581.1		c.2477C>A	p.Thr826Lys	missense	Exon 10 of 24	NP_001394510.1	A0A2R8Y7V5
BRCA1	NM_001407582.1		c.2477C>A	p.Thr826Lys	missense	Exon 10 of 24	NP_001394511.1	A0A2R8Y7V5

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
BRCA1	ENST00000357654.9	TSL:1 MANE Select	c.2477C>A	p.Thr826Lys	missense	Exon 10 of 23	ENSP00000350283.3	P38398-1
BRCA1	ENST00000471181.7	TSL:1	c.2477C>A	p.Thr826Lys	missense	Exon 10 of 24	ENSP00000418960.2	P38398-7
BRCA1	ENST00000470026.6	TSL:1	c.2477C>A	p.Thr826Lys	missense	Exon 10 of 23	ENSP00000419274.2	P38398-1

Frequencies

GnomAD3 genomes

AF:

0.000204

AC:

AN:

152130

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000323

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000179

AC:

AN:

250902

AF XY:

0.000162

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000202

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000326

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000355

AC:

519

AN:

1461564

Hom.:

Cov.:

AF XY:

0.000329

AC XY:

239

AN XY:

727110

show subpopulations

African (AFR)

AF:

0.0000597

AC:

AN:

33478

American (AMR)

AF:

0.000134

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39690

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.0000188

AC:

AN:

53158

Middle Eastern (MID)

AF:

0.000520

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000433

AC:

482

AN:

1111972

Other (OTH)

AF:

0.000397

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.474

Heterozygous variant carriers

110

146

183

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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

GnomAD4 genome

AF:

0.000204

AC:

AN:

152248

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74434

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

41548

American (AMR)

AF:

0.000262

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10604

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000323

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

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:

0.000352

Hom.:

Bravo

AF:

0.000174

TwinsUK

AF:

0.00108

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000181

AC:

EpiCase

AF:

0.000545

EpiControl

AF:

0.000415

ClinVar

ClinVar submissions

Significance:Benign

Revision:reviewed by expert panel

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (9)

Breast-ovarian cancer, familial, susceptibility to, 1 (8)

Hereditary breast ovarian cancer syndrome (4)

not provided (4)

Hereditary cancer-predisposing syndrome (3)

BRCA1-related cancer predisposition (1)

BRCA1-related disorder (1)

Breast and/or ovarian cancer (1)

Breast neoplasm (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Uncertain

0.11

BayesDel_noAF

Pathogenic

0.23

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Uncertain

0.54

Eigen

Benign

-0.11

Eigen_PC

Benign

-0.34

FATHMM_MKL

Benign

0.17

LIST_S2

Uncertain

0.95

M_CAP

Uncertain

0.16

MetaRNN

Benign

0.27

MetaSVM

Uncertain

-0.28

MutationAssessor

Pathogenic

3.3

PhyloP100

0.18

PrimateAI

Benign

0.25

PROVEAN

Pathogenic

-5.2

REVEL

Uncertain

0.55

Sift

Uncertain

0.0010

Sift4G

Benign

0.12

Polyphen

0.95

Vest4

0.41

MVP

0.69

MPC

0.21

ClinPred

0.14

GERP RS

1.7

Varity_R

0.24

gMVP

0.14

Mutation Taster

=65/35

polymorphism

(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