chr13-32340622-GCA-C

Variant names:

• chr13-32340622-GCA-C
• rs276174868
• NM_000059.4:c.6267_6269delGCAinsC

GermlineCancer (beta)

Variant summary

Our verdict is Pathogenic.

+12 Pathogenic

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received 12 classification points (ACGS-UK Somatic Oncogenicity v2025). O1_ModerateO2_Very_StrongO3_Moderate

The NM_000059.4(BRCA2):c.6267_6269delGCAinsC (p.Glu2089AspfsTer2) variant causes a frameshift, missense change. The variant is predicted to lead to nonsense-mediated mRNA decay (NMD). The gene BRCA2 is a tumor suppressor gene (CancerMine: 139 TSG, 7 oncogene, 19 driver citations). The gene BRCA2 is a cancer driver gene (CancerMine: 139 TSG, 7 oncogene, 19 driver citations). The variant is absent from the gnomAD population database at sites with sufficient sequencing coverage. Variant has been reported in ClinVar as Pathogenic/Likely Pathogenic (★★★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: BRCA2 NM_000059.4 frameshift, missense
• Clinical Significance: Pathogenic reviewed by expert panel P:17
• Conservation: PhyloP100: -0.180
• Publications: 5 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: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics
• 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

Classification according to ACGS-UK Somatic Oncogenicity v2025

Specifications for BRCA2 are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Pathogenic. The variant received 12 points.

• O1: TSG gene: ClinVar germline P/LP ★★+ — Moderate (O1); O1 contributing sources (2.0 pts): ClinVar germline P/LP in TSG (★★★)
• O2: Frameshift/stop-gained, NMD predicted, LoF oncogenic mechanism — O2 very strong (+8); Use caution in the presence of multiple transcripts; Gene confirmed as TSG in CancerMine (TSG: 139 citations, oncogene: 7 citations, driver: 19 citations).; Frameshift/stop-gained. NMD predicted: true. LoF mechanism: true. Downstream pathogenic count: 2234.
• O3: Absent or extremely rare in gnomAD (AC ≤ 2) — O3 moderate; GnomAD: AF = absent, AC = 0 — absent/extremely rare (O3 moderate [+2])

Variant Effect in Transcripts

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

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BRCA2	NM_000059.4	MANE Select	c.6267_6269delGCAinsC	p.Glu2089AspfsTer2	frameshift missense	Exon 11 of 27	NP_000050.3	A0A7P0T9D7
	BRCA2	NM_001432077.1		c.6267_6269delGCAinsC	p.Glu2089AspfsTer2	frameshift missense	Exon 11 of 27	NP_001419006.1	A0A7P0T9D7
	BRCA2	NM_001406720.1		c.6267_6269delGCAinsC	p.Glu2089AspfsTer2	frameshift 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.6267_6269delGCAinsC	p.Glu2089AspfsTer2	frameshift missense	Exon 11 of 27	ENSP00000369497.3	P51587
	BRCA2	ENST00000544455.6	TSL:1	c.6267_6269delGCAinsC	p.Glu2089AspfsTer2	frameshift missense	Exon 11 of 27	ENSP00000439902.1	P51587
	BRCA2	ENST00000530893.7	TSL:1	c.5898_5900delGCAinsC	p.Glu1966AspfsTer2	frameshift missense	Exon 11 of 27	ENSP00000499438.2	A0A590UJI7

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
7	-	-	Breast-ovarian cancer, familial, susceptibility to, 2 (7)
3	-	-	Hereditary breast ovarian cancer syndrome (3)
2	-	-	Hereditary cancer-predisposing syndrome (2)
2	-	-	not provided (2)
1	-	-	BRCA2-related disorder (1)
1	-	-	Familial cancer of breast (1)
1	-	-	Ovarian neoplasm (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.18
Mutation Taster		=0/200	disease causing (fs/PTC)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs276174868;

hg19: chr13-32914759;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar