13-32338746-C-T

Variant names:

• chr13-32338746-C-T
• rs587776464
• NM_000059.4:c.4391C>T

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP6

The NM_000059.4(BRCA2):​c.4391C>T​(p.Ser1464Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/20 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. S1464C) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: BRCA2 NM_000059.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4 B:3
• Conservation: PhyloP100: 0.970
• Publications: 4 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):

• breast-ovarian cancer, familial, susceptibility to, 2

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

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen, G2P
• 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 -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.26254147).
• BP6: Variant 13-32338746-C-T is Benign according to our data. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168. Variant chr13-32338746-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 156168.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BRCA2	NM_000059.4	c.4391C>T	p.Ser1464Phe	missense_variant	Exon 11 of 27	ENST00000380152.8	NP_000050.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BRCA2	ENST00000380152.8	c.4391C>T	p.Ser1464Phe	missense_variant	Exon 11 of 27	5	NM_000059.4	ENSP00000369497.3
BRCA2	ENST00000530893.7	c.4022C>T	p.Ser1341Phe	missense_variant	Exon 11 of 27	1		ENSP00000499438.2
BRCA2	ENST00000614259.2	n.4391C>T		non_coding_transcript_exon_variant	Exon 10 of 26	2		ENSP00000506251.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 33

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4 Benign:3

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:2 Benign:1

Mar 23, 2023

University of Washington Department of Laboratory Medicine, University of Washington

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: curation

Missense variant in a coldspot region where missense variants are very unlikely to be pathogenic (PMID:31911673). -

Mar 28, 2019

Color Diagnostics, LLC DBA Color Health

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jun 08, 2018

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.S1464F variant (also known as c.4391C>T), located in coding exon 10 of the BRCA2 gene, results from a C to T substitution at nucleotide position 4391. The serine at codon 1464 is replaced by phenylalanine, an amino acid with highly dissimilar properties. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Breast-ovarian cancer, familial, susceptibility to, 2 Uncertain:1 Benign:2

Sep 01, 2023

Department of Medical and Surgical Sciences, University of Bologna

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

PM2(Supporting)+BP1(Strong) according to ACMG/AMP classification guidelines specified for BRCA1 & BRCA2 (Classification Criteria V1.0.0 2023-09-08 - https://cspec.genome.network/cspec/ui/svi/affiliation/50087) (PMID: 38160042) -

Mar 14, 2007

Sharing Clinical Reports Project (SCRP)

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Jul 16, 2025

Dipartimento Di Medicina Di Precisione, Università Degli Studi Della Campania Luigi Vanvitelli

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This missense variant c.4391C>T (p.Ser1464Phe) in the BRCA2 gene affects exon 11, the longest and functionally most important exon of the gene. It results in the substitution of serine with phenylalanine at codon 1464. The residue is moderately conserved, and the physicochemical difference between serine (polar) and phenylalanine (hydrophobic and bulky) is notable. However, in silico predictions (BayesDel, REVEL) suggest a tolerated or benign effect on protein function. Currently, no strong clinical or functional evidence supports pathogenicity. Based on the available data, this variant is interpreted as likely benign. -

Hereditary breast ovarian cancer syndrome Uncertain:1

Sep 05, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces serine, which is neutral and polar, with phenylalanine, which is neutral and non-polar, at codon 1464 of the BRCA2 protein (p.Ser1464Phe). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with BRCA2-related conditions. ClinVar contains an entry for this variant (Variation ID: 156168). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt BRCA2 protein function with a negative predictive value of 95%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Benign	0.0099	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	22
DANN	Uncertain	0.99
Eigen	Benign	-0.14
Eigen_PC	Benign	-0.064
FATHMM_MKL	Benign	0.55	D
M_CAP	Benign	0.044	D
MetaRNN	Benign	0.26	T;T
MetaSVM	Benign	-0.90	T
PhyloP100		0.97
PrimateAI	Benign	0.41	T
PROVEAN	Pathogenic	-4.8	D;D
REVEL	Benign	0.15
Sift	Uncertain	0.012	D;D
Sift4G	Uncertain	0.0090	D;D
Vest4		0.46
MutPred		0.25		Loss of disorder (P = 0.0067);Loss of disorder (P = 0.0067);
MVP		0.88
MPC		0.12
ClinPred		0.85	D
GERP RS		3.5
gMVP		0.54
Mutation Taster		=85/15	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: rs587776464; hg19: chr13-32912883;