chr13-32363211-C-T

Variant names:

• chr13-32363211-C-T
• rs80359035
• NM_000059.4:c.8009C>T
• BRCA2 p.Ser2670Leu

GermlineCancer (beta)

Variant summary

Our verdict is Uncertain significance.

+5 Uncertain · Hot

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received 5 classification points (ACGS-UK Somatic Oncogenicity v2025). O1_ModerateO4_SupportingO5_SupportingO6_Supporting

The NM_000059.4(BRCA2):c.8009C>T (p.Ser2670Leu) variant causes a missense change involving the alteration of a conserved nucleotide. 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 allele was found at a cumulative frequency of 0.00000248 (AC=4) in the gnomAD database across 1,613,428 control chromosomes (no homozygotes observed). The grpmax filtering allele frequency (95% CI) is 0.000208. In-silico predictor (REVEL) classifies this variant as likely damaging/oncogenic. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. The affected nucleotide is highly conserved across species (PhyloP 100-way vertebrate score: 7.50). Variant has been reported in ClinVar as Pathogenic/Likely Pathogenic (★★). ClinVar reports functional evidence for this variant: "SCV000073398: Experimental studies have shown that this missense change affects BRCA2 function (PMID:19043619, 29394989, 32444794)." and additional evidence is available in ClinVar. A different missense at the same amino acid position has been reported as Pathogenic/Likely Pathogenic in ClinVar: p.S2670W: Pathogenic (ClinVar VariationId 489785, 3 stars) Other variants at the same amino acid position have been reported in ClinVar (not pathogenic): p.S2670P: Uncertain_significance (ClinVar VariationId 1001575, 2 stars); p.S2670= (synonymous): Likely_benign (ClinVar VariationId 183837, 3 stars) The variant has been observed in cBioPortal in 11 samples across 9 studies and 7 cancer types; somatic enrichment level: SUPPORTING (Observed repeatedly in cBioPortal somatic datasets.). This exact variant is curated in the UniProt human variants database as Uncertain Significance; it is also listed as a COSMIC curated somatic variant.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: BRCA2 NM_000059.4 missense
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:22 U:1 O:1
• Conservation: PhyloP100: 7.50
• Publications: 3 publications found

Genes affected

BRCA2 (HGNC:1101): (BRCA2 DNA repair associated) The product of this gene in involved in maintenance of genome stability. It is involved in double-strand break repair pathways during mitotic and meiotic homologous recombination and functions in protecting DNA replication forks. The encoded protein contains sites for interactions with PALB2 and EMSY and an N-terminal DNA binding domain. It also contains a RAD51 binding domain with multiple components. It has multiple BRC repeats, an alpha helix domain, oligonucleotide binding folds, and a tower-like domain. It has a nuclear localization signal and a phosphorylation site for cyclin-dependent kinase. The C-terminus of the protein can bind single-stranded and double-stranded DNA. The product of this gene interacts with multiple proteins, including RAD51. It is involved in recruiting RAD51 filaments to DNA double-strand break sites and also in cytoplasmic division. It also acts as a tumor suppressor. Mutations in this gene or decreased expression have been implicated in multiple tumor types, including breast, ovarian, pancreatic, prostate and other cancers. [provided by RefSeq, May 2026]

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.

Classification was made for transcript:

Our verdict: Uncertain_significance. The variant received 5 points.

Apply	Criterion Code & Title / Strength	Strength	Rationale / Clinical Context
	O1Established oncogenic variant		TSG gene: ClinVar germline P/LP ★★+ — Moderate (O1); O1 contributing sources (2.0 pts): ClinVar germline P/LP in TSG (★★)
	O4Enriched in somatic variant database		Enriched in cBioPortal (pre-computed score ≥ 1.0) — Supporting (O4); cBioPortal: samples=11 | studies=9 | cancer types=7 | level=SUPPORTING | points=1.0 | reason: Observed repeatedly in cBioPortal somatic datasets.
	O5Same location/impact as known oncogenic		Different AA at same residue with oncogenic evidence (or germline P/LP in TSG), or same AA change SCI Tier II Potential — Supporting (O5); ClinVar same-AA oncogenic/T1: false | ClinVar same-AA SCI tier: — | CGI same-AA oncogenic: false | TSG: true | ClinVar same-AA germline P/LP: false | CIViC LOF: false | ClinVar diff-AA oncogenic: false | ClinVar diff-AA germline P/LP: true
	O6Computational evidence supports deleterious effect		Computational evidence supports a deleterious/oncogenic effect; Missense variant — primary computational scorer supports an oncogenic/deleterious effect

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.8009C>T p.Ser2670Leu	missense	Exon 18 of 27	Prot: NP_000050.3 UniProt:
	BRCA2 NM_001432077.1		c.8009C>T p.Ser2670Leu	missense	Exon 18 of 27	Prot: NP_001419006.1 UniProt:
	BRCA2 NM_001406720.1		c.8009C>T p.Ser2670Leu	missense	Exon 18 of 27	Prot: NP_001393649.1 UniProt:

BRCA2 NM_000059.4

MANE Select

HGVSc / HGVSpc.8009C>Tp.Ser2670Leu

Exon rankExon 18 of 27

missense

Prot: NP_000050.3UniProt: A0A7P0T9D7P51587

BRCA2 NM_001432077.1

HGVSc / HGVSpc.8009C>Tp.Ser2670Leu

Exon rankExon 18 of 27

missense

Prot: NP_001419006.1UniProt: A0A7P0T9D7P51587

BRCA2 NM_001406720.1

HGVSc / HGVSpc.8009C>Tp.Ser2670Leu

Exon rankExon 18 of 27

missense

Prot: NP_001393649.1UniProt: A0A8V8TPZ2

Ensembl Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	BRCA2 ENST00000380152.8	TSL:5MANE Select	c.8009C>T p.Ser2670Leu	missense	Exon 18 of 27	Prot: ENSP00000369497.3 UniProt:
	BRCA2 ENST00000544455.6	TSL:1	c.8009C>T p.Ser2670Leu	missense	Exon 18 of 27	Prot: ENSP00000439902.1 UniProt:
	BRCA2 ENST00000530893.7	TSL:1	c.7640C>T p.Ser2547Leu	missense	Exon 18 of 27	Prot: ENSP00000499438.2 UniProt:

BRCA2 ENST00000380152.8

TSL:5MANE Select

HGVSc / HGVSpc.8009C>Tp.Ser2670Leu

Exon rankExon 18 of 27

missense

Prot: ENSP00000369497.3UniProt: P51587

BRCA2 ENST00000544455.6

TSL:1

HGVSc / HGVSpc.8009C>Tp.Ser2670Leu

Exon rankExon 18 of 27

missense

Prot: ENSP00000439902.1UniProt: P51587

BRCA2 ENST00000530893.7

TSL:1

HGVSc / HGVSpc.7640C>Tp.Ser2547Leu

Exon rankExon 18 of 27

missense

Prot: ENSP00000499438.2UniProt: A0A590UJI7

Frequencies

Allele frequencies (AF), counts (AC/AN), homozygotes and coverage

Common (AF > 0.05 / Hom > 5)

Rare (AF ≤ 0.0001 / Hom ≤ 1)

Source / population	AF	AC	Hom	AN	Coverage
Global population databases 4 sources Large-scale international reference populations
GnomAD3 genomes	AF: 0.0000132	AC:2	Hom:0	AN:151936	Cov:32
GnomAD4 exome Warning	AF: 0.00000137	AC:2	Hom:0	AN:1461492	Cov:31
GnomAD4 genome	AF: 0.0000132	AC:2	Hom:0	AN:151936	Cov:32
ALFA (dbGaP/dbSNP Allele Frequency Aggregator)	AF: 0.00	AC:0	Hom:0	AN:200630	Cov:

Showing 4 sources

Case/control cohorts

Cohort	Cases			Controls
	AF	AC	AN	AF	AC	AN
SCHEMA(Schizophrenia)	0.0000172	1	58190	0.00	0	80498

Showing 1 cohortAllele count / allele number. AF is computed from the counts for ASC (not provided by the source).

ClinVar

ClinVar submissions

Significance: Pathogenic/Likely pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
5	-	-	not provided (5)
4	-	-	Breast-ovarian cancer, familial, susceptibility to, 2 (5)
4	-	-	Hereditary breast ovarian cancer syndrome (4)
2	-	-	Familial cancer of breast (2)
2	-	-	Hereditary cancer-predisposing syndrome (2)
1	-	-	BRCA2-related disorder (1)
1	-	-	Breast-ovarian cancer, familial, susceptibility to, 1 (1)
1	-	-	Hereditary breast ovarian cancer syndrome;C2675520:Breast-ovarian cancer, familial, susceptibility to, 2 (1)
1	-	-	Malignant tumor of breast (1)
1	-	-	Medulloblastoma;C0346153:Familial cancer of breast;C0376358:Prostate cancer;C1838457:Fanconi anemia complementation group D1;C2675520:Breast-ovarian cancer, familial, susceptibility to, 2;C2751641:Glioma susceptibility 3;C3150546:Pancreatic cancer, susceptibility to, 2;CN033288:Wilms tumor 1 (1)
-	1	-	not specified (1)

Computational Scores

Algorithm	Calibrated pred.	Score	Prediction
AlphaGenome AVI	Pathogenic	27
AlphaMissense	Pathogenic	0.72
BayesDel_addAF	Pathogenic	0.39	D
BayesDel_noAF	Pathogenic	0.32
CADD	Pathogenic	28
DANN	Pathogenic	1.0
Eigen	Pathogenic	0.86
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Pathogenic	0.99	D
FuncVEP CTI	Pathogenic	0.83
GPN-Star LLR	N/A	-5.9
GPN-Star score	N/A	5.9
M_CAP	Pathogenic	0.36	D
MetaRNN	Pathogenic	0.93	D
MetaSVM	Uncertain	0.73	D
Mutation Taster	N/A	25/75	disease causing (ClinVar)
PhyloP100	Uncertain	7.5
PrimateAI	Benign	0.47	T
PROVEAN	Benign	-1.8	N
RBP_binding_hub_radar	N/A	0.0
RBP_regulation_power_radar	N/A	1.7
REVEL	Pathogenic	0.86
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0030	D
VESM-3B	Benign	-11

Showing 25 of 25 scores

Splicing Scores

Algorithm	Calibrated pred.	Score	Prediction
Pangolin (max)	Benign	0.020
SpliceAI score (max)	Benign	0.010	Details are displayed if max score is > 0.2
Splicevardb	N/A	3.0

Showing 3 of 3 scores

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.

MaveDB functional evidence

MaveDB is a public repository of laboratory assays that test the effect of thousands of variants at once — treat this as supporting research data and interpret it with great caution; it is not a clinical classification.

1 abnormal

1 assay found for this variant.

Clinical calibration: 1 functionally abnormal (PS3), 0 functionally normal (BS3).

Nucleotide level

Scores from arrayed screen of BRCA2 homology directed repair function in VC-8 cells

Arrayed screen of BRCA2 homology directed repair function in VC-8 cells

• Gene: BRCA2
• Assay type: Reporter
• Mechanism: DNA repair and Double-strand break repair via homologous recombination
• Model system: Other (Cricetulus griseus)
• Score: 0.976 · p.Ser2670Leu (assay numbering)

Classified as

PS3 strongFunctionally abnormalIGVF Coding Variant Focus Group -- Controls: All Variants: Functionally abnormal

+3 more calibrations

PS3 strongFunctionally abnormalIGVF Coding Variant Focus Group -- Controls: Missense Variants Only: Functionally abnormal

PS3 very strongFunctionally abnormalRUO ExCALIBR calibration: PS3 Very Strong (8)

PS3 very strongFunctionally abnormalRUO ExCALIBR calibration (ClinVar 2018): PS3 Very Strong (8)

Other links and lift over

dbSNP: rs80359035;

hg19: chr13-32937348;

COSMIC: COSV66453386;

COSMIC: COSV66453386;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar