17-43093220-A-G

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_007294.4(BRCA1):c.2311T>C(p.Leu771Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.333 in 1,613,608 control chromosomes in the GnomAD database, including 91,981 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★★).

Frequency

Genomes: 𝑓 0.30 ( 7355 hom., cov: 32)

Exomes 𝑓: 0.34 ( 84626 hom. )

Consequence

BRCA1
NM_007294.4 synonymous

Scores

Clinical Significance

Benign reviewed by expert panel B:30O:2

Conservation

PhyloP100: -0.442

Variant links:

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.82).

BP6

Variant 17-43093220-A-G is Benign according to our data. Variant chr17-43093220-A-G is described in ClinVar as [Benign]. Clinvar id is 125554.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr17-43093220-A-G is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=-0.442 with no splicing effect.

BA1

GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.476 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BRCA1	NM_007294.4 link	c.2311T>C	p.Leu771Leu	synonymous_variant	Exon 10 of 23	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.2311T>C	p.Leu771Leu	synonymous_variant	Exon 10 of 23	1	NM_007294.4	ENSP00000350283.3		P38398-1

Frequencies

GnomAD3 genomes

AF:

0.300

AC:

45482

AN:

151856

Hom.:

7352

Cov.:

show subpopulations

Gnomad AFR

AF:

0.180

Gnomad AMI

AF:

0.285

Gnomad AMR

AF:

0.319

Gnomad ASJ

AF:

0.349

Gnomad EAS

AF:

0.369

Gnomad SAS

AF:

0.493

Gnomad FIN

AF:

0.403

Gnomad MID

AF:

0.339

Gnomad NFE

AF:

0.330

Gnomad OTH

AF:

0.319

GnomAD3 exomes

AF:

0.347

AC:

87177

AN:

250946

Hom.:

16057

AF XY:

0.357

AC XY:

48351

AN XY:

135620

show subpopulations

Gnomad AFR exome

AF:

0.181

Gnomad AMR exome

AF:

0.311

Gnomad ASJ exome

AF:

0.362

Gnomad EAS exome

AF:

0.379

Gnomad SAS exome

AF:

0.503

Gnomad FIN exome

AF:

0.402

Gnomad NFE exome

AF:

0.324

Gnomad OTH exome

AF:

0.342

GnomAD4 exome

AF:

0.336

AC:

491155

AN:

1461632

Hom.:

84626

Cov.:

AF XY:

0.341

AC XY:

248165

AN XY:

727128

show subpopulations

Gnomad4 AFR exome

AF:

0.174

Gnomad4 AMR exome

AF:

0.314

Gnomad4 ASJ exome

AF:

0.357

Gnomad4 EAS exome

AF:

0.353

Gnomad4 SAS exome

AF:

0.498

Gnomad4 FIN exome

AF:

0.396

Gnomad4 NFE exome

AF:

0.325

Gnomad4 OTH exome

AF:

0.332

GnomAD4 genome

AF:

0.299

AC:

45490

AN:

151976

Hom.:

7355

Cov.:

AF XY:

0.306

AC XY:

22737

AN XY:

74254

show subpopulations

Gnomad4 AFR

AF:

0.180

Gnomad4 AMR

AF:

0.319

Gnomad4 ASJ

AF:

0.349

Gnomad4 EAS

AF:

0.368

Gnomad4 SAS

AF:

0.492

Gnomad4 FIN

AF:

0.403

Gnomad4 NFE

AF:

0.330

Gnomad4 OTH

AF:

0.324

Alfa

AF:

0.325

Hom.:

14458

Bravo

AF:

0.282

Asia WGS

AF:

0.405

AC:

1408

AN:

3478

EpiCase

AF:

0.321

EpiControl

AF:

0.331

ClinVar

Significance: Benign

Submissions summary: Benign:30Other:2

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

Breast-ovarian cancer, familial, susceptibility to, 1

Benign:10Other:1

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 0.3304 (Asian), 0.128 (African), 0.3536 (European), derived from 1000 genomes (2012-04-30). -

Breast Cancer Information Core (BIC) (BRCA1)

Significance: not provided

Review Status: no classification provided

Collection Method: clinical testing

- -

Jan 02, 2014

Counsyl

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: literature only

High frequency in a 1kG or ESP population: 32.4 %. -

Nov 03, 2014

Michigan Medical Genetics Laboratories, University of Michigan

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Mar 22, 2011

Sharing Clinical Reports Project (SCRP)

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

GreenArray Genomic Research & Solutions of Accurate Diagnostic Private Limited

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Oct 10, 2014

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Sep 21, 2015

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

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 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not specified

Benign:8

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Jan 07, 2016

Eurofins Ntd Llc (ga)

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

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

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Apr 18, 2017

Cancer Genetics and Genomics Laboratory, British Columbia Cancer Agency

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 01, 2017

GeneKor MSA

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Dec 02, 2016

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

p.Leu771Leu in exon 10 of BRCA1: This variant is not expected to have clinical s ignificance because it has been identified in 50% (8241/16498) of South Asian ch romosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute. org; dbSNP rs16940). -

Hereditary breast ovarian cancer syndrome

Benign:4

Nov 01, 2021

Genetics Program, Instituto Nacional de Cancer

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: research

- -

Feb 04, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

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

- -

Dec 18, 2013

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

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Benign:3

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Nov 27, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Dec 07, 2016

Mayo Clinic Laboratories, Mayo Clinic

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Hereditary cancer-predisposing syndrome

Benign:3

Feb 15, 2020

Sema4, Sema4

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: curation

- -

Mar 31, 2015

Color Diagnostics, LLC DBA Color Health

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 01, 2014

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Familial cancer of breast

Benign:1Other:1

Genomic Research Center, Shahid Beheshti University of Medical Sciences

Significance: not provided

Review Status: no classification provided

Collection Method: literature only

- -

Feb 23, 2017

Baylor Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Familial cancer of breast;C2676676:Breast-ovarian cancer, familial, susceptibility to, 1;C3280442:Pancreatic cancer, susceptibility to, 4;C4554406:Fanconi anemia, complementation group S

Benign:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance: 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

-0.82

CADD

Benign

1.2

DANN

Benign

0.65

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over