rs80358782
Variant summary
Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6
The NM_000059.4(BRCA2):c.5612G>A(p.Ser1871Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000323 in 1,610,562 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. S1871S) has been classified as Likely benign.
Frequency
Consequence
NM_000059.4 missense
Scores
Clinical Significance
Conservation
Publications
- breast-ovarian cancer, familial, susceptibility to, 2Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), ClinGen
- Fanconi anemia complementation group D1Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen, G2P
- pancreatic cancer, susceptibility to, 2Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
- sarcomaInheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
- hereditary breast ovarian cancer syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Fanconi anemiaInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- medulloblastomaInheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
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ACMG classification
Our verdict: Likely_benign. The variant received -5 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt | 
|---|---|---|---|---|---|---|---|---|---|---|
| BRCA2 | ENST00000380152.8 | c.5612G>A | p.Ser1871Asn | missense_variant | Exon 11 of 27 | 5 | NM_000059.4 | ENSP00000369497.3 | ||
| BRCA2 | ENST00000530893.7 | c.5243G>A | p.Ser1748Asn | missense_variant | Exon 11 of 27 | 1 | ENSP00000499438.2 | |||
| BRCA2 | ENST00000614259.2 | n.5612G>A | non_coding_transcript_exon_variant | Exon 10 of 26 | 2 | ENSP00000506251.1 | 
Frequencies
GnomAD3 genomes  0.000164  AC: 25AN: 152142Hom.:  0  Cov.: 33 show subpopulations 
GnomAD2 exomes  AF:  0.0000324  AC: 8AN: 247218 AF XY:  0.0000299   show subpopulations 
GnomAD4 exome  AF:  0.0000185  AC: 27AN: 1458302Hom.:  0  Cov.: 44 AF XY:  0.0000165  AC XY: 12AN XY: 725210 show subpopulations 
Age Distribution
GnomAD4 genome  0.000164  AC: 25AN: 152260Hom.:  0  Cov.: 33 AF XY:  0.000215  AC XY: 16AN XY: 74458 show subpopulations 
Age Distribution
ClinVar
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 2    Uncertain:4 
ACMG classification criteria: PM2 supporting, BP4 supporting -
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This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
not provided    Uncertain:3Benign:1 
The BRCA2 c.5612G>A; p.Ser1871Asn variant (rs80358782) has been reported in individuals with early-onset prostate cancer or breast cancer (Edwards 2003, El Saghir 2015, Lee 2008). This variant is reported multiple times in ClinVar as uncertain (Variation ID: 51891), and observed in general population databases with overall allele frequencies of 0.02 percent (1/5008 alleles, 1000 Genomes Project), and 0.006 percent (17/273156 alleles, Genome Aggregation Database). The serine at codon 1871 is weakly conserved, and computational algorithms (SIFT, PolyPhen2, MutationTaster, Prior Probabilities) predict this variant to be tolerated. However, due to the limited information regarding p.Ser1871Asn, its clinical significance in uncertain at this time. REFERENCES Link to ClinVar database for p.Ser1871Asn: https://www.ncbi.nlm.nih.gov/clinvar/variation/51891/ Edwards SM et al. Two percent of men with early-onset prostate cancer harbor germline mutations in the BRCA2 gene. Am J Hum Genet. 2003 Jan;72(1):1-12. El Saghir NS et al. BRCA1 and BRCA2 mutations in ethnic Lebanese Arab women with high hereditary risk breast cancer. Oncologist. 2015 Apr;20(4):357-64. Lee E et al. Evaluation of unclassified variants in the breast cancer susceptibility genes BRCA1 and BRCA2 using five methods: results from a population-based study of young breast cancer patients. Breast Cancer Res. 2008;10(1):R19. -
Observed in individuals with breast, ovarian, or prostate cancer (PMID: 12474142, 18284688, 25777348, 36329109, 38641594); In silico analysis indicates that this missense variant does not alter protein structure/function; Also known as 5840G>A; This variant is associated with the following publications: (PMID: 12474142, 25777348, 18284688, 10923033, 29884841, 35264596, 31853058, 31911673, 32377563, 33471991, 36329109, 38641594) -
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Hereditary cancer-predisposing syndrome    Benign:3 
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Missense variant in a coldspot region where missense variants are very unlikely to be pathogenic (PMID:31911673). -
This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
not specified    Uncertain:2 
DNA sequence analysis of the BRCA2 gene demonstrated a sequence change, c.5612G>A, in exon 11 that results in an amino acid change, p.Ser1871Asn. This sequence change has been described in the gnomAD database with a frequency of 0.069% in the African/African American subpopulation (dbSNP rs80358782). The p.Ser1871Asn change affects a poorly conserved amino acid residue located in a domain of the BRCA2 protein that is known to be functional. The p.Ser1871Asn substitution appears to be benign using several in-silico pathogenicity prediction tools (SIFT, PolyPhen2, Align GVGD, REVEL). This sequence change has been previously described in individuals with BRCA2-related cancers, as well as in individuals with no history of cancer (PMID: 12474142, 25777348, 18284688, 33471991, FLOSSIES database https://whi.color.com/variant/13-32914104-G-A). Due to insufficient evidences and the lack of functional studies, the clinical significance of the p.Ser1871Asn change remains unknown at this time. -
Variant summary: BRCA2 c.5612G>A (p.Ser1871Asn) results in a conservative amino acid change located in the BRCA2 repeat; IPR002093 of the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 3.2e-05 in 1610562 control chromosomes, predominantly at a frequency of 0.00057 within the African or African-American subpopulation in the gnomAD database (v4.0.0). This frequency is not significantly higher than estimated for a pathogenic variant in BRCA2 causing Hereditary Breast And Ovarian Cancer Syndrome (3.2e-05 vs 0.00075), allowing no conclusion about variant significance. c.5612G>A has been reported in the literature in individuals affected with Breast And Ovarian Cancer (Edwards_2003, Lee_2008, El Saghir_2015, Dorling_2021) as well as in individuals without Breast And Ovarian Cancer (FLOSSIES database, Dorling_2021). These reports do not provide unequivocal conclusions about association of the variant with Hereditary Breast And Ovarian Cancer Syndrome. Co-occurrences with other pathogenic variant(s) have been reported ( BRCA1 c.798_799delTT, p.Ser267LysfsX19), providing supporting evidence for a benign role. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 12474142, 18284688, 25777348, 33471991). ClinVar contains an entry for this variant (Variation ID: 51891). Based on the evidence outlined above, the variant was classified as uncertain significance. -
Hereditary breast ovarian cancer syndrome    Uncertain:1Benign:1 
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Hereditary cancer    Benign:1 
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Computational scores
Source: 
Splicing
 Find out detailed SpliceAI scores and Pangolin per-transcript scores at