17-58724090-C-T
Variant summary
Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong
The NM_058216.3(RAD51C):c.955C>T(p.Arg319*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000744 in 1,611,982 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. R319R) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Consequence
NM_058216.3 stop_gained
Scores
Clinical Significance
Conservation
Publications
- breast-ovarian cancer, familial, susceptibility to, 3Inheritance: AD Classification: STRONG, LIMITED Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
- Fanconi anemia complementation group OInheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen
- hereditary breast ovarian cancer syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Fanconi anemiaInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- hereditary breast carcinomaInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Pathogenic. The variant received 16 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| RAD51C | NM_058216.3 | c.955C>T | p.Arg319* | stop_gained | Exon 7 of 9 | ENST00000337432.9 | NP_478123.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| RAD51C | ENST00000337432.9 | c.955C>T | p.Arg319* | stop_gained | Exon 7 of 9 | 1 | NM_058216.3 | ENSP00000336701.4 |
Frequencies
GnomAD3 genomes AF: 0.00000658 AC: 1AN: 151930Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.00000796 AC: 2AN: 251282 AF XY: 0.00000736 show subpopulations
GnomAD4 exome AF: 0.00000753 AC: 11AN: 1460052Hom.: 0 Cov.: 30 AF XY: 0.00000551 AC XY: 4AN XY: 726410 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000658 AC: 1AN: 151930Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74184 show subpopulations
ClinVar
Submissions by phenotype
not provided Pathogenic:3
Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 25470109, 24763289, 22538716, 26720728, 26261251, 25452441, 27616075, 28709830, 30257646, 29922827, 32359370, 33471991, 34923718, 28888541, 33804961, 34326862, 36169650, 34887416)
Hereditary cancer-predisposing syndrome Pathogenic:3
The p.R319* pathogenic mutation (also known as c.955C>T), located in coding exon 7 of the RAD51C gene, results from a C to T substitution at nucleotide position 955. This changes the amino acid from an arginine to a stop codon within coding exon 7. This mutation has been reported in multiple individuals with personal and/or family histories of breast and/or ovarian cancer (Loveday C et al. Nat. Genet., 2012 Apr;44:475-6; author reply 476; Couch FJ et al. J Clin Oncol, 2015 Feb;33:304-11; Song H et al. J Clin Oncol, 2015 Sep;33:2901-7; Norquist BM et al. JAMA Oncol, 2016 Apr;2:482-90; Kraus C et al. Int J Cancer, 2017 Jan;140:95-102; Schoolmeester JK et al. Hum. Pathol., 2017 12;70:14-26; Hoyer J et al. BMC Cancer, 2018 Sep;18:926; Dorling et al. N Engl J Med. 2021 02;384:428-439). In addition to the clinical data presented in the literature, this alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation.
This variant changes 1 nucleotide in exon 7 of the RAD51C gene, creating a premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in individuals affected with breast or ovarian cancer (PMID: 22538716, 25452441, 26261251, 26720728, 27616075, 28709830, 32359370). This variant has been identified in 2/251282 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Loss of RAD51C function is a known mechanism of disease (clinicalgenome.org). Based on the available evidence, this variant is classified as Pathogenic.
Breast-ovarian cancer, familial, susceptibility to, 3 Pathogenic:3
This variant is considered pathogenic. This variant creates a termination codon and is predicted to result in premature protein truncation.
Fanconi anemia complementation group O;C3150659:Breast-ovarian cancer, familial, susceptibility to, 3 Pathogenic:1
Fanconi anemia complementation group O Pathogenic:1
This sequence change creates a premature translational stop signal (p.Arg319*) in the RAD51C gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in RAD51C are known to be pathogenic (PMID: 20400964, 21990120, 24800917, 29278735). This variant is present in population databases (rs587781287, gnomAD 0.007%). This premature translational stop signal has been observed in individual(s) with breast and ovarian cancer (PMID: 22538716, 25452441, 26261251). ClinVar contains an entry for this variant (Variation ID: 140799). For these reasons, this variant has been classified as Pathogenic.
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at