rs80359111

Positions:

chr13-32332334-T-C

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 0P and 3B. BP4_ModerateBP6

The NM_000059.4(BRCA2):c.856T>C(p.Ser286Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000175 in 1,601,596 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

BRCA2
NM_000059.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:11

Conservation

PhyloP100: 0.0940

Variant links:

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]

BRCA2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.108682096).

BP6

Variant 13-32332334-T-C is Benign according to our data. Variant chr13-32332334-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 52622.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=9}. Variant chr13-32332334-T-C is described in Lovd as [Likely_benign]. Variant chr13-32332334-T-C is described in Lovd as [Benign].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BRCA2	NM_000059.4 link	c.856T>C	p.Ser286Pro	missense_variant	10/27	ENST00000380152.8	NP_000050.3	P51587

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
BRCA2	ENST00000380152.8 link	c.856T>C	p.Ser286Pro	missense_variant	10/27	5	NM_000059.4	ENSP00000369497.3	P51587
BRCA2	ENST00000530893.7 link	c.487T>C	p.Ser163Pro	missense_variant	10/27	1		ENSP00000499438.2	A0A590UJI7
BRCA2	ENST00000614259.2 link	n.856T>C		non_coding_transcript_exon_variant	9/26	2		ENSP00000506251.1	A0A7P0TAP7

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152148

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000208

AC:

AN:

240246

Hom.:

AF XY:

0.0000308

AC XY:

AN XY:

129828

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000314

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000271

Gnomad OTH exome

AF:

0.000172

GnomAD4 exome

AF:

0.0000179

AC:

AN:

1449448

Hom.:

Cov.:

AF XY:

0.0000194

AC XY:

AN XY:

720728

show subpopulations

Gnomad4 AFR exome

AF:

0.0000305

Gnomad4 AMR exome

AF:

0.0000711

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000190

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152148

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74324

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000264

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:11

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Breast-ovarian cancer, familial, susceptibility to, 2

Uncertain:2Benign:2

Likely benign, no assertion criteria provided	clinical testing	BRCAlab, Lund University	Mar 02, 2020	- -
Uncertain significance, no assertion criteria provided	clinical testing	Breast Cancer Information Core (BIC) (BRCA2)	Jun 20, 2002	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Counsyl	Jan 27, 2016	- -
Likely benign, no assertion criteria provided	clinical testing	Sharing Clinical Reports Project (SCRP)	Mar 04, 2013	- -

Hereditary cancer-predisposing syndrome

Benign:4

Likely benign, criteria provided, single submitter	curation	University of Washington Department of Laboratory Medicine, University of Washington	Mar 23, 2023	Missense variant in a coldspot region where missense variants are very unlikely to be pathogenic (PMID:31911673). -
Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Apr 17, 2019	This alteration is classified as likely 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. -
Likely benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Feb 19, 2015	- -
Likely benign, criteria provided, single submitter	curation	Sema4, Sema4	Feb 22, 2021	- -

not specified

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Feb 27, 2017	- -
Likely benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Nov 11, 2024	Variant summary: BRCA2 c.856T>C (p.Ser286Pro) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 2.1e-05 in 240246 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.856T>C has been reported in the literature in individuals affected with Hereditary Breast and Ovarian Cancer (example: Balia 2011, Azzollini 2016, Solmaz_2020, Dorling_2021, Patruno_2021). These reports do not provide unequivocal conclusions about association of the variant with Hereditary Breast And Ovarian Cancer Syndrome. Co-occurrences with pathogenic variants have been reported (BRCA1 c.5266dupC, p.Gln1756ProfsX74; BIC database) and have been observed internally (BRCA1 c.1044T>A, p.Cys348X), providing supporting evidence for a benign role. Several publications reported experimental evidence evaluating an impact on protein function (Balia 2011, Guidugli 2013, Spugnesi 2013). These results showed no damaging effect for this variant. The following publications have been ascertained in the context of this evaluation (PMID: 27062684, 21671020, 29061375, 33471991, 24323938, 26689913, 34572941, 31954625, 23328489, 28263838). ClinVar contains an entry for this variant (Variation ID: 52622). Based on the evidence outlined above, the variant was classified as likely benign. -

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Feb 03, 2021	This variant is associated with the following publications: (PMID: 27225819, 24323938, 28263838, 25348012, 27062684, 24817641, 29061375, 26689913, 21671020, 23328489, 31131967) -
Likely benign, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	May 15, 2023	- -

Hereditary breast ovarian cancer syndrome

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 11, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.098

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Uncertain

0.98

Eigen

Benign

-0.89

Eigen_PC

Benign

-0.86

FATHMM_MKL

Benign

0.026

M_CAP

Uncertain

0.17

MetaRNN

Benign

0.11

T;T

MetaSVM

Benign

-0.88

PrimateAI

Benign

0.29

PROVEAN

Benign

-0.62

N;N

REVEL

Benign

0.23

Sift

Benign

0.26

T;T

Sift4G

Benign

0.14

T;T

Vest4

0.29

MVP

0.80

MPC

0.16

ClinPred

0.058

GERP RS

2.0

gMVP

0.24

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