13-32354799-A-G

Position:

• chr13-32354799-A-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_000059.4(BRCA2):​c.7008-62A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00685 in 1,156,906 control chromosomes in the GnomAD database, including 63 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★★).

• Frequency:
  • Genomes: 𝑓 0.0044 (1 hom., cov: 32)
  • Exomes 𝑓: 0.0072 (62 hom.)
• Consequence: BRCA2 NM_000059.4 intron
• Clinical Significance: Benign reviewed by expert panel U:2 B:19
• Conservation: PhyloP100: -0.00600

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]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 13-32354799-A-G is Benign according to our data. Variant chr13-32354799-A-G is described in ClinVar as [Benign]. Clinvar id is 52247.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr13-32354799-A-G is described in Lovd as [Likely_benign]. Variant chr13-32354799-A-G is described in Lovd as [Benign].
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00442 (674/152358) while in subpopulation NFE AF= 0.00769 (523/68026). AF 95% confidence interval is 0.00714. There are 1 homozygotes in gnomad4. There are 291 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAdExome4 at 62 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BRCA2	NM_000059.4	c.7008-62A>G		intron_variant		ENST00000380152.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BRCA2	ENST00000380152.8	c.7008-62A>G		intron_variant		5	NM_000059.4	A2

Frequencies

GnomAD3 genomes AF: 0.00443 AC: 675 AN: 152240 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.00133

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00497

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00103

Gnomad FIN AF: 0.000188

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00769

Gnomad OTH AF: 0.00621

GnomAD4 exome AF: 0.00722 AC: 7256 AN: 1004548 Hom.: 62 AF XY: 0.00699 AC XY: 3632 AN XY: 519450

Gnomad4 AFR exome AF: 0.00121

Gnomad4 AMR exome AF: 0.00397

Gnomad4 ASJ exome AF: 0.000173

Gnomad4 EAS exome AF: 0.0000268

Gnomad4 SAS exome AF: 0.00137

Gnomad4 FIN exome AF: 0.00113

Gnomad4 NFE exome AF: 0.00941

Gnomad4 OTH exome AF: 0.00655

GnomAD4 genome AF: 0.00442 AC: 674 AN: 152358 Hom.: 1 Cov.: 32 AF XY: 0.00391 AC XY: 291 AN XY: 74508

Gnomad4 AFR AF: 0.00130

Gnomad4 AMR AF: 0.00496

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00104

Gnomad4 FIN AF: 0.000188

Gnomad4 NFE AF: 0.00769

Gnomad4 OTH AF: 0.00615

Alfa AF: 0.00618 Hom.: 1

Bravo AF: 0.00518

Asia WGS AF: 0.00115 AC: 4 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Uncertain:2 Benign:19

Revision: reviewed by expert panel

Submissions by phenotype

Breast-ovarian cancer, familial, susceptibility to, 2 Uncertain:1 Benign:5

Benign, criteria provided, single submitter	clinical testing	Mendelics	May 28, 2019	- -
Uncertain significance, no assertion criteria provided	clinical testing	Breast Cancer Information Core (BIC) (BRCA2)	Dec 17, 2010	- -
Benign, criteria provided, single submitter	clinical testing	Pathway Genomics	Oct 30, 2014	- -
Benign, criteria provided, single submitter	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	Oct 09, 2014	- -
Benign, reviewed by expert panel	curation	Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA)	Jun 18, 2019	IARC class based on posterior probability from multifactorial likelihood analysis, thresholds for class as per Plon et al. 2008 (PMID: 18951446). Class 1 based on posterior probability = 8.83E-264 -
Benign, criteria provided, single submitter	literature only	Counsyl	Apr 12, 2014	- -

not specified Benign:4

Benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Oct 26, 2017	- -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Mar 30, 2017	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Department of Pathology and Laboratory Medicine, Sinai Health System	-	- -

not provided Benign:4

Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Aug 06, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	May 25, 2016	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Aug 01, 2024	BRCA2: BS2 -

Hereditary breast ovarian cancer syndrome Uncertain:1 Benign:2

Benign, criteria provided, single submitter	clinical testing	National Health Laboratory Service, Universitas Academic Hospital and University of the Free State	Nov 16, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia	Feb 16, 2015	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Nov 14, 2023	- -

Hereditary cancer-predisposing syndrome Benign:3

Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Jan 27, 2017	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. -
Benign, criteria provided, single submitter	curation	Sema4, Sema4	Jun 10, 2020	- -
Benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Dec 05, 2014	- -

Medulloblastoma;C0346153:Familial cancer of breast;C0376358:Malignant tumor of prostate;C1838457:Fanconi anemia complementation group D1;C2675520:Breast-ovarian cancer, familial, susceptibility to, 2;C2751641:Glioma susceptibility 3;C3150546:Pancreatic cancer, susceptibility to, 2;CN033288:Wilms tumor 1 Benign:1

Benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Mar 04, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	1.2
DANN	Benign	0.75

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

Other links and lift over

dbSNP: rs76584943; hg19: chr13-32928936; COSMIC: COSV104701307;