chr13-32371035-A-C

Variant names:

• chr13-32371035-A-C
• rs11571747
• NM_000059.4:c.8567A>C

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_Strong BP6 BS2

The NM_000059.4(BRCA2):​c.8567A>C​(p.Glu2856Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00246 in 1,614,178 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/20 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. E2856V) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.0015 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0026 (8 hom.)
• Consequence: BRCA2 NM_000059.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2 B:38
• Conservation: PhyloP100: 1.24
• Publications: 56 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: Benign. The variant received -9 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.04511389).
• BP6: Variant 13-32371035-A-C is Benign according to our data. Variant chr13-32371035-A-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 38168.
• BS2: High Homozygotes in GnomAdExome4 at 8 AD,AR gene

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.8567A>C	p.Glu2856Ala	missense	Exon 20 of 27	NP_000050.3	A0A7P0T9D7
	BRCA2	NM_001432077.1		c.8567A>C	p.Glu2856Ala	missense	Exon 20 of 27	NP_001419006.1	A0A7P0T9D7
	BRCA2	NM_001406720.1		c.8567A>C	p.Glu2856Ala	missense	Exon 20 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.8567A>C	p.Glu2856Ala	missense	Exon 20 of 27	ENSP00000369497.3	P51587
	BRCA2	ENST00000544455.6	TSL:1	c.8567A>C	p.Glu2856Ala	missense	Exon 20 of 27	ENSP00000439902.1	P51587
	BRCA2	ENST00000530893.7	TSL:1	c.8198A>C	p.Glu2733Ala	missense	Exon 20 of 27	ENSP00000499438.2	A0A590UJI7

Frequencies

GnomAD3 genomes AF: 0.00148 AC: 225 AN: 152214 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000555

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000377

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00288

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00107 AC: 269 AN: 251244 AF XY: 0.00105

Gnomad AFR exome AF: 0.000738

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.000693

Gnomad NFE exome AF: 0.00208

Gnomad OTH exome AF: 0.000816

GnomAD4 exome AF: 0.00256 AC: 3740 AN: 1461846 Hom.: 8 Cov.: 31 AF XY: 0.00245 AC XY: 1784 AN XY: 727228

African (AFR) AF: 0.000418 AC: 14 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39686

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.000805 AC: 43 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00323 AC: 3593 AN: 1111986

Other (OTH) AF: 0.00147 AC: 89 AN: 60396

GnomAD4 genome AF: 0.00148 AC: 225 AN: 152332 Hom.: 0 Cov.: 32 AF XY: 0.00118 AC XY: 88 AN XY: 74492

African (AFR) AF: 0.000553 AC: 23 AN: 41588

American (AMR) AF: 0.000131 AC: 2 AN: 15300

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.000377 AC: 4 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00288 AC: 196 AN: 68010

Other (OTH) AF: 0.00 AC: 0 AN: 2116

Alfa AF: 0.00190 Hom.: 2

Bravo AF: 0.00124

TwinsUK AF: 0.00216 AC: 8

ALSPAC AF: 0.00311 AC: 12

ESP6500AA AF: 0.000454 AC: 2

ESP6500EA AF: 0.00198 AC: 17

ExAC AF: 0.000881 AC: 107

EpiCase AF: 0.00142

EpiControl AF: 0.00190

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	-	11	Breast-ovarian cancer, familial, susceptibility to, 2 (11)
-	1	8	not specified (9)
-	-	6	Hereditary cancer-predisposing syndrome (6)
-	-	6	not provided (6)
-	-	4	Hereditary breast ovarian cancer syndrome (4)
-	1	1	Breast and/or ovarian cancer (2)
-	-	1	BRCA2-related cancer predisposition (1)
-	-	1	Fanconi anemia complementation group D1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.091
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.23
CADD	Benign	19
DANN	Uncertain	0.99
Eigen	Uncertain	0.31
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Benign	0.72	D
M_CAP	Benign	0.064	D
MetaRNN	Benign	0.045	T
MetaSVM	Benign	-0.59	T
PhyloP100		1.2
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.22
Sift	Benign	0.16	T
Sift4G	Benign	0.28	T
Vest4		0.50
MVP		0.86
MPC		0.16
ClinPred		0.052	T
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
gMVP		0.42
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: rs11571747; hg19: chr13-32945172;