rs28897718

Variant names:

• chr13-32337312-A-G
• rs28897718
• NM_000059.4:c.2957A>G

Your query was ambiguous. Multiple possible variants found:

• chr13-32337312-A-G
• chr13-32337312-A-T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_Moderate BP6

The NM_000059.4(BRCA2):​c.2957A>G​(p.Asn986Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000843 in 1,613,154 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N986D) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000091 (0 hom.)
• Consequence: BRCA2 NM_000059.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:7 B:9
• Conservation: PhyloP100: 0.0760
• Publications: 11 publications found

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 Gene-Disease associations (from GenCC):

• BRCA2-related cancer predisposition

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• breast-ovarian cancer, familial, susceptibility to, 2

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• Fanconi anemia complementation group D1

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics
• pancreatic cancer, susceptibility to, 2

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• sarcoma

  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
• medulloblastoma

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.15537965).
• BP6: Variant 13-32337312-A-G is Benign according to our data. Variant chr13-32337312-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 51377.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000059.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BRCA2	NM_000059.4	MANE Select	c.2957A>G	p.Asn986Ser	missense	Exon 11 of 27	NP_000050.3	A0A7P0T9D7
	BRCA2	NM_001432077.1		c.2957A>G	p.Asn986Ser	missense	Exon 11 of 27	NP_001419006.1	A0A7P0T9D7
	BRCA2	NM_001406720.1		c.2957A>G	p.Asn986Ser	missense	Exon 11 of 27	NP_001393649.1	A0A8V8TPZ2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BRCA2	ENST00000380152.8	TSL:5 MANE Select	c.2957A>G	p.Asn986Ser	missense	Exon 11 of 27	ENSP00000369497.3	P51587
	BRCA2	ENST00000544455.6	TSL:1	c.2957A>G	p.Asn986Ser	missense	Exon 11 of 27	ENSP00000439902.1	P51587
	BRCA2	ENST00000530893.7	TSL:1	c.2588A>G	p.Asn863Ser	missense	Exon 11 of 27	ENSP00000499438.2	A0A590UJI7

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152260 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000482

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000520 AC: 13 AN: 249782 AF XY: 0.0000739

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000106

Gnomad OTH exome AF: 0.000165

GnomAD4 exome AF: 0.0000910 AC: 133 AN: 1460894 Hom.: 0 Cov.: 33 AF XY: 0.000100 AC XY: 73 AN XY: 726714

African (AFR) AF: 0.00 AC: 0 AN: 33406

American (AMR) AF: 0.00 AC: 0 AN: 44602

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26098

East Asian (EAS) AF: 0.00 AC: 0 AN: 39634

South Asian (SAS) AF: 0.00 AC: 0 AN: 85972

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53340

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5756

European-Non Finnish (NFE) AF: 0.000115 AC: 128 AN: 1111736

Other (OTH) AF: 0.0000828 AC: 5 AN: 60350

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152260 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74396

African (AFR) AF: 0.0000482 AC: 2 AN: 41476

American (AMR) AF: 0.00 AC: 0 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5204

South Asian (SAS) AF: 0.00 AC: 0 AN: 4838

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10630

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68036

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.000177 Hom.: 0

Bravo AF: 0.0000756

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000233 AC: 2

ExAC AF: 0.00000824 AC: 1

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	3	Hereditary cancer-predisposing syndrome (4)
-	1	2	Breast-ovarian cancer, familial, susceptibility to, 2 (3)
-	1	2	not specified (3)
-	1	1	Hereditary breast ovarian cancer syndrome (2)
-	1	1	not provided (2)
-	1	-	BRCA2-related disorder (1)
-	1	-	Breast and/or ovarian cancer (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	1.2
DANN	Benign	0.96
Eigen	Benign	-0.61
Eigen_PC	Benign	-0.66
FATHMM_MKL	Benign	0.22	N
M_CAP	Benign	0.046	D
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-1.1	T
PhyloP100		0.076
PrimateAI	Benign	0.37	T
PROVEAN	Uncertain	-3.1	D
REVEL	Benign	0.052
Sift	Benign	0.10	T
Sift4G	Benign	0.30	T
Vest4		0.34
MVP		0.83
MPC		0.023
ClinPred		0.12	T
GERP RS		3.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
gMVP		0.28
Mutation Taster		=78/22	polymorphism

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

Other links and lift over

dbSNP: rs28897718; hg19: chr13-32911449;