13-32355250-T-C

Position:

• chr13-32355250-T-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_000059.4(BRCA2):​c.7397T>C​(p.Val2466Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.996 in 1,613,598 control chromosomes in the GnomAD database, including 800,969 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Synonymous variant affecting the same amino acid position (i.e. V2466V) has been classified as Benign.

• Frequency:
  • Genomes: 𝑓 0.98 (73292 hom., cov: 32)
  • Exomes 𝑓: 1.0 (727677 hom.)
• Consequence: BRCA2 NM_000059.4 missense
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts U:1 B:14 O:1
• Conservation: PhyloP100: 2.49

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 (MetaRNN=8.148477E-7).
• BP6: Variant 13-32355250-T-C is Benign according to our data. Variant chr13-32355250-T-C is described in ClinVar as [Benign]. Clinvar id is 133738.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr13-32355250-T-C is described in Lovd as [Benign].
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.993 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BRCA2	NM_000059.4	c.7397T>C	p.Val2466Ala	missense_variant	14/27	ENST00000380152.8	NP_000050.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BRCA2	ENST00000380152.8	c.7397T>C	p.Val2466Ala	missense_variant	14/27	5	NM_000059.4	ENSP00000369497	A2

Frequencies

GnomAD3 genomes AF: 0.981 AC: 149241 AN: 152192 Hom.: 73240 Cov.: 32

Gnomad AFR AF: 0.933

Gnomad AMI AF: 1.00

Gnomad AMR AF: 0.993

Gnomad ASJ AF: 1.00

Gnomad EAS AF: 1.00

Gnomad SAS AF: 1.00

Gnomad FIN AF: 1.00

Gnomad MID AF: 0.978

Gnomad NFE AF: 1.00

Gnomad OTH AF: 0.985

GnomAD3 exomes AF: 0.995 AC: 249881 AN: 251168 Hom.: 124333 AF XY: 0.996 AC XY: 135258 AN XY: 135770

Gnomad AFR exome AF: 0.933

Gnomad AMR exome AF: 0.996

Gnomad ASJ exome AF: 1.00

Gnomad EAS exome AF: 1.00

Gnomad SAS exome AF: 1.00

Gnomad FIN exome AF: 1.00

Gnomad NFE exome AF: 1.00

Gnomad OTH exome AF: 0.997

GnomAD4 exome AF: 0.998 AC: 1458237 AN: 1461288 Hom.: 727677 Cov.: 46 AF XY: 0.998 AC XY: 725661 AN XY: 726992

Gnomad4 AFR exome AF: 0.930

Gnomad4 AMR exome AF: 0.996

Gnomad4 ASJ exome AF: 1.00

Gnomad4 EAS exome AF: 1.00

Gnomad4 SAS exome AF: 1.00

Gnomad4 FIN exome AF: 1.00

Gnomad4 NFE exome AF: 1.00

Gnomad4 OTH exome AF: 0.996

GnomAD4 genome AF: 0.981 AC: 149351 AN: 152310 Hom.: 73292 Cov.: 32 AF XY: 0.981 AC XY: 73073 AN XY: 74476

Gnomad4 AFR AF: 0.933

Gnomad4 AMR AF: 0.993

Gnomad4 ASJ AF: 1.00

Gnomad4 EAS AF: 1.00

Gnomad4 SAS AF: 1.00

Gnomad4 FIN AF: 1.00

Gnomad4 NFE AF: 1.00

Gnomad4 OTH AF: 0.985

Alfa AF: 0.997 Hom.: 149634

Bravo AF: 0.978

TwinsUK AF: 1.00 AC: 3707

ALSPAC AF: 0.999 AC: 3852

ESP6500AA AF: 0.935 AC: 4119

ESP6500EA AF: 0.999 AC: 8593

ExAC AF: 0.994 AC: 120636

Asia WGS AF: 0.996 AC: 3460 AN: 3474

EpiCase AF: 0.999

EpiControl AF: 0.999

ClinVar

Significance: Benign

Submissions summary: Uncertain:1 Benign:14 Other:1

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:7 Other:1

not provided, no classification provided	reference population	ITMI	Sep 19, 2013	- -
Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Feb 25, 2016	This is a RefSeq error. The reference base (c.7397T) is the minor allele. This a llele (T) has been identified in 6.7% (696/10392) of African chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs1695 47) and thus meets criteria to be classified as benign. -
Benign, no assertion criteria provided	clinical testing	Department of Pathology and Laboratory Medicine, Sinai Health System	-	- -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Oct 23, 2015	- -
Benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute	-	- -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -

Breast-ovarian cancer, familial, susceptibility to, 2 Benign:3

Benign, criteria provided, single submitter	clinical testing	Mendelics	May 28, 2019	- -
Benign, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Feb 05, 2024	- -
Benign, criteria provided, single submitter	clinical testing	GreenArray Genomic Research & Solutions of Accurate Diagnostic Private Limited	-	- -

not provided Benign:2

Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 30, 2023	- -

Hereditary breast ovarian cancer syndrome Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Benign, criteria provided, single submitter	clinical testing	National Health Laboratory Service, Universitas Academic Hospital and University of the Free State	Apr 19, 2022	- -

Breast ductal adenocarcinoma Uncertain:1

Uncertain significance, no assertion criteria provided

research

Next Generation Diagnostics, Novartis Institutes for BioMedical Research, Inc.

Jul 20, 2015

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.051
BayesDel_addAF	Benign	-0.67	T
BayesDel_noAF	Benign	-0.68
CADD	Benign	8.7
DANN	Benign	0.17
Eigen	Benign	-0.61
Eigen_PC	Benign	-0.67
FATHMM_MKL	Benign	0.00045	N
MetaRNN	Benign	8.1e-7	T;T
MetaSVM	Benign	-0.93	T
MutationTaster	Benign	1.0	P;P
PrimateAI	Benign	0.27	T
PROVEAN	Benign	0.62	N;N
REVEL	Benign	0.091
Sift	Benign	1.0	T;T
Sift4G	Benign	0.70	T;T
Vest4		0.035
MPC		0.021
ClinPred		0.0074	T
GERP RS		5.1
gMVP		0.17

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: rs169547; hg19: chr13-32929387; COSMIC: COSV66451785;