rs786203808
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP6
The NM_000059.4(BRCA2):c.2348T>C(p.Val783Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,670 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/19 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. V783G) has been classified as Likely benign.
Frequency
Consequence
NM_000059.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -1 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
BRCA2 | NM_000059.4 | c.2348T>C | p.Val783Ala | missense_variant | 11/27 | ENST00000380152.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
BRCA2 | ENST00000380152.8 | c.2348T>C | p.Val783Ala | missense_variant | 11/27 | 5 | NM_000059.4 | A2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 exomes AF: 0.00000797 AC: 2AN: 250824Hom.: 0 AF XY: 0.00000737 AC XY: 1AN XY: 135654
GnomAD4 exome AF: 0.00000137 AC: 2AN: 1461670Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 727142
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:2Benign:1
Uncertain significance, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Mar 01, 2023 | This missense variant replaces valine with alanine at codon 783 of the BRCA2 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with hereditary cancer in the literature and has been reported in 2 unaffected individuals (PMID: 33471991; Leiden Open Variation Database DB-ID BRCA2_007939). This variant has been identified in 2/250824 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 18, 2022 | The p.V783A variant (also known as c.2348T>C), located in coding exon 10 of the BRCA2 gene, results from a T to C substitution at nucleotide position 2348. The valine at codon 783 is replaced by alanine, an amino acid with similar properties. This variant was detected in the germline of patient with Sertoli-Leydig cell tumor and called a variant of unknown significance; however, this patient was also found to have a pathogenic germline mutation in the DICER1 gene (Cowan M et al. Gynecol Oncol Rep, 2018 Aug;25:94-97). This amino acid position is not 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. - |
Likely benign, criteria provided, single submitter | curation | University of Washington Department of Laboratory Medicine, University of Washington | Mar 23, 2023 | Missense variant in a coldspot region where missense variants are very unlikely to be pathogenic (PMID:31911673). - |
Breast-ovarian cancer, familial, susceptibility to, 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Mar 23, 2023 | This missense variant replaces valine with alanine at codon 783 of the BRCA2 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with hereditary cancer in the literature and has been reported in 2 unaffected individuals (PMID: 33471991; Leiden Open Variation Database DB-ID BRCA2_007939). This variant has been identified in 2/250824 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. - |
Hereditary breast ovarian cancer syndrome Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Nov 17, 2023 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at