chr17-58709857-A-C
Position:
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1_StrongPM2PP3_StrongPP5_Very_Strong
The NM_058216.3(RAD51C):c.706-2A>C variant causes a splice acceptor change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★).
Frequency
Genomes: not found (cov: 30)
Consequence
RAD51C
NM_058216.3 splice_acceptor
NM_058216.3 splice_acceptor
Scores
4
2
1
Splicing: ADA: 1.000
2
Clinical Significance
Conservation
PhyloP100: 6.97
Genes affected
RAD51C (HGNC:9820): (RAD51 paralog C) This gene is a member of the RAD51 family. RAD51 family members are highly similar to bacterial RecA and Saccharomyces cerevisiae Rad51 and are known to be involved in the homologous recombination and repair of DNA. This protein can interact with other RAD51 paralogs and is reported to be important for Holliday junction resolution. Mutations in this gene are associated with Fanconi anemia-like syndrome. This gene is one of four localized to a region of chromosome 17q23 where amplification occurs frequently in breast tumors. Overexpression of the four genes during amplification has been observed and suggests a possible role in tumor progression. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
Splicing variant, NOT destroyed by nmd, known LOF gene, truncates exone, which is 0.1158267 fraction of the gene. Cryptic splice site detected, with MaxEntScore 3.3, offset of 10, new splice context is: ctgtatttcggttcgactAGtga. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.
PM2
Very rare variant in population databases, with high coverage;
PP3
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
Variant 17-58709857-A-C is Pathogenic according to our data. Variant chr17-58709857-A-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 631112.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-58709857-A-C is described in Lovd as [Pathogenic]. Variant chr17-58709857-A-C is described in Lovd as [Likely_pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
RAD51C | NM_058216.3 | c.706-2A>C | splice_acceptor_variant | ENST00000337432.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
RAD51C | ENST00000337432.9 | c.706-2A>C | splice_acceptor_variant | 1 | NM_058216.3 | P2 |
Frequencies
GnomAD3 genomes Cov.: 30
GnomAD3 genomes
Cov.:
30
GnomAD4 exome Cov.: 30
GnomAD4 exome
Cov.:
30
GnomAD4 genome Cov.: 30
GnomAD4 genome
Cov.:
30
ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:6
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Hereditary cancer-predisposing syndrome Pathogenic:2
Likely pathogenic, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Mar 29, 2019 | - - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Oct 13, 2017 | The c.706-2A>C intronic variant results from an A to C substitution two nucleotides upstream from coding exon 5 in the RAD51C gene. This nucleotide position is highly conserved in available vertebrate species. Using the BDGP and ESEfinder splice site prediction tools, this alteration is predicted to abolish the native splice acceptor site; however, direct evidence is unavailable. Based on the majority of available evidence to date, this variant is likely to be pathogenic. - |
Fanconi anemia complementation group O;C3150659:Breast-ovarian cancer, familial, susceptibility to, 3 Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Dec 06, 2021 | - - |
not provided Pathogenic:1
Pathogenic, no assertion criteria provided | curation | Leiden Open Variation Database | Dec 23, 2019 | Curator: Arleen D. Auerbach. Submitter to LOVD: Florentia Fostira. - |
Fanconi anemia complementation group O Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Feb 14, 2023 | Studies have shown that disruption of this splice site results in skipping of exon 5, but is expected to preserve the integrity of the reading-frame (PMID: 22006311, 24139550, 33333735). This sequence change affects an acceptor splice site in intron 4 of the RAD51C gene. RNA analysis indicates that disruption of this splice site induces altered splicing and likely results in a shortened protein product. This variant is not present in population databases (gnomAD no frequency). Disruption of this splice site has been observed in individual(s) with breast cancer and ovarian cancer (PMID: 22006311, 22538716, 24549055, 25452441, 26261251, 26681312, 29255180, 31300551). ClinVar contains an entry for this variant (Variation ID: 631112). This variant disrupts a region of the RAD51C protein in which other variant(s) (p.Arg258His) have been determined to be pathogenic (PMID: 20400963, 22167183, 26354865). This suggests that this is a clinically significant region of the protein, and that variants that disrupt it are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. - |
Breast-ovarian cancer, familial, susceptibility to, 3 Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Myriad Genetics, Inc. | Jan 03, 2024 | This variant is considered likely pathogenic. This variant occurs within a consensus splice junction and is predicted to result in abnormal mRNA splicing of either an out-of-frame exon or an in-frame exon necessary for protein stability and/or normal function. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Uncertain
D
MutationTaster
Benign
D;D
GERP RS
Splicing
Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
dbscSNV1_RF
Pathogenic
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_AG_spliceai
Position offset: 12
DS_AL_spliceai
Position offset: 2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at