chr13-32332296-C-G
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_000059.4(BRCA2):c.818C>G(p.Ser273Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★★). Synonymous variant affecting the same amino acid position (i.e. S273S) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Consequence
NM_000059.4 stop_gained
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 18 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
BRCA2 | NM_000059.4 | c.818C>G | p.Ser273Ter | stop_gained | 10/27 | ENST00000380152.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
BRCA2 | ENST00000380152.8 | c.818C>G | p.Ser273Ter | stop_gained | 10/27 | 5 | NM_000059.4 | A2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome Cov.: 30
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 2 Pathogenic:3
Pathogenic, no assertion criteria provided | clinical testing | Breast Cancer Information Core (BIC) (BRCA2) | May 29, 2002 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA), c/o University of Cambridge | Oct 02, 2015 | - - |
Pathogenic, reviewed by expert panel | curation | Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA) | Sep 08, 2016 | Variant allele predicted to encode a truncated non-functional protein. - |
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Mar 23, 2018 | This variant is denoted BRCA2 c.818C>G at the cDNA level and p.Ser273Ter (S273X) at the protein level. The substitution creates a nonsense variant, which changes a Serine to a premature stop codon (TCA>TGA), and is predicted to cause loss of normal protein function through either protein truncation or nonsense-mediated mRNA decay. While this specific variant has not been reported in the literature in association with BRCA2-related cancers, a similar variant resulting the same premature stop, BRCA2 c.818C>A (p.Ser273Ter), has been identified in at least one breast and/or ovarian cancer family (Meyer 2003). BRCA2 Ser273Ter is considered pathogenic. - |
Hereditary breast ovarian cancer syndrome Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jun 13, 2020 | Loss-of-function variants in BRCA2 are known to be pathogenic (PMID: 20104584). For these reasons, this variant has been classified as Pathogenic. This sequence change creates a premature translational stop signal (p.Ser273*) in the BRCA2 gene. It is expected to result in an absent or disrupted protein product. This variant is not present in population databases (ExAC no frequency). This variant has been reported in individuals in the Breast Cancer Information Core database (PMID: 10923033). ClinVar contains an entry for this variant (Variation ID: 52524). - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at