rs1799954

Variant names:

• chr13-32340455-C-A
• rs1799954
• NM_000059.4:c.6100C>A
• BRCA2 p.Arg2034Ser

Your query was ambiguous. Multiple possible variants found:

• chr13-32340455-C-A
• chr13-32340455-C-G
• chr13-32340455-C-T

GermlineCancer (beta)

Variant summary

Our verdict is Uncertain significance.

0 Uncertain · Cold

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received 0 classification points (ACMG Germline Pathogenicity v2019). PM2_SupportingBP6

The NM_000059.4(BRCA2):c.6100C>A (p.Arg2034Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a cumulative frequency of 0.00000124 (AC=2) in the gnomAD database across 1,613,582 control chromosomes (no homozygotes observed). The grpmax filtering allele frequency (95% CI) is 0.0000241. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign/Likely Benign (no review stars). Other variants at the same amino acid position have been reported in ClinVar (not pathogenic): p.R2034C: Benign (ClinVar VariationId 41558, 3 stars); p.R2034G: Uncertain_significance (ClinVar VariationId 2719621, 1 star); p.R2034H: Conflicting_classifications_of_pathogenicity (ClinVar VariationId 52012); p.R2034L: Conflicting_classifications_of_pathogenicity (ClinVar VariationId 1041798); p.R2034P: Conflicting_classifications_of_pathogenicity (ClinVar VariationId 840304)

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: BRCA2 NM_000059.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3 B:2
• Conservation: PhyloP100: -0.243
• Publications: 73 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 ACMG Germline Pathogenicity v2019

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 0 points.

Apply	Criterion Code & Title / Strength	Strength	Rationale / Clinical Context
	PM2Absent/extremely low in population databases		Rare in gnomAD for AD/XL gene (popmax AF below threshold) — PM2 Supporting; GnomAD popmax AF = 0.0000241 — borderline rare for AD+AR gene (base 0.0001, raised to 0.000139 by highest known P/LP ClinVar AF 0.000139) — PM2 supporting.
	BP6Reputable source reports benign		ClinVar 0-star benign — supporting (BP6); ClinVar germline classification: Benign/Likely Benign, 0 star(s).

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.6100C>A p.Arg2034Ser	missense	Exon 11 of 27	Prot: NP_000050.3 UniProt:
	BRCA2 NM_001432077.1		c.6100C>A p.Arg2034Ser	missense	Exon 11 of 27	Prot: NP_001419006.1 UniProt:
	BRCA2 NM_001406720.1		c.6100C>A p.Arg2034Ser	missense	Exon 11 of 27	Prot: NP_001393649.1 UniProt:

BRCA2 NM_000059.4

MANE Select

HGVSc / HGVSpc.6100C>Ap.Arg2034Ser

Exon rankExon 11 of 27

missense

Prot: NP_000050.3UniProt: A0A7P0T9D7P51587

BRCA2 NM_001432077.1

HGVSc / HGVSpc.6100C>Ap.Arg2034Ser

Exon rankExon 11 of 27

missense

Prot: NP_001419006.1UniProt: A0A7P0T9D7P51587

BRCA2 NM_001406720.1

HGVSc / HGVSpc.6100C>Ap.Arg2034Ser

Exon rankExon 11 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.6100C>A p.Arg2034Ser	missense	Exon 11 of 27	Prot: ENSP00000369497.3 UniProt:
	BRCA2 ENST00000544455.6	TSL:1	c.6100C>A p.Arg2034Ser	missense	Exon 11 of 27	Prot: ENSP00000439902.1 UniProt:
	BRCA2 ENST00000530893.7	TSL:1	c.5731C>A p.Arg1911Ser	missense	Exon 11 of 27	Prot: ENSP00000499438.2 UniProt:

BRCA2 ENST00000380152.8

TSL:5MANE Select

HGVSc / HGVSpc.6100C>Ap.Arg2034Ser

Exon rankExon 11 of 27

missense

Prot: ENSP00000369497.3UniProt: P51587

BRCA2 ENST00000544455.6

TSL:1

HGVSc / HGVSpc.6100C>Ap.Arg2034Ser

Exon rankExon 11 of 27

missense

Prot: ENSP00000439902.1UniProt: P51587

BRCA2 ENST00000530893.7

TSL:1

HGVSc / HGVSpc.5731C>Ap.Arg1911Ser

Exon rankExon 11 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: 0.00000657	AC:1	Hom:0	AN:152148	Cov:33
GnomAD4 exome	AF: 6.84e-7	AC:1	Hom:0	AN:1461434	Cov:46
GnomAD4 genome	AF: 0.00000657	AC:1	Hom:0	AN:152148	Cov:33
ALFA (dbGaP/dbSNP Allele Frequency Aggregator)	AF: 0.00000141	AC:1	Hom:13	AN:708636	Cov:

Showing 4 sources

Case/control cohorts

Cohort	Cases			Controls
	AF	AC	AN	AF	AC	AN
SCHEMA(Schizophrenia)	0.0000129	1	77596	0.00	0	139182

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

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	1	Hereditary cancer-predisposing syndrome (2)
-	-	1	Breast-ovarian cancer, familial, susceptibility to, 2 (1)
-	1	-	Hereditary breast ovarian cancer syndrome (1)
-	1	-	not specified (1)

Computational Scores

Algorithm	Calibrated pred.	Score	Prediction
AlphaGenome AVI	Uncertain	10
AlphaMissense	Benign	0.16
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	9.5
DANN	Benign	0.92
Eigen	Benign	-1.0
Eigen_PC	Benign	-0.99
FATHMM_MKL	Benign	0.12	N
FuncVEP CTI	Benign	0.00068
GPN-Star LLR	N/A	-0.35
GPN-Star score	N/A	0.35
M_CAP	Uncertain	0.10	D
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-0.93	T
Mutation Taster	N/A	95/5	polymorphism
PhyloP100	Benign	-0.24
PrimateAI	Benign	0.22	T
PROVEAN	Benign	-1.0	N
REVEL	Uncertain	0.32
Sift	Uncertain	0.024	D
Sift4G	Benign	0.47	T
VESM-3B	Benign	-1.1

Showing 23 of 23 scores

Splicing Scores

Algorithm	Calibrated pred.	Score	Prediction
Pangolin (max)	Benign	0.0
SpliceAI score (max)	Benign	0.0	Details are displayed if max score is > 0.2

Showing 2 of 2 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.

No MaveDB functional evidence found for this variant.

Other links and lift over

dbSNP: rs1799954;

hg19: chr13-32914592;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar