rs375451955
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BP4
The NM_058216.3(RAD51C):c.200A>G(p.Glu67Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000026 in 1,614,144 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_058216.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -1 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000112 AC: 17AN: 152208Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000318 AC: 8AN: 251452Hom.: 0 AF XY: 0.0000368 AC XY: 5AN XY: 135902
GnomAD4 exome AF: 0.0000171 AC: 25AN: 1461818Hom.: 0 Cov.: 31 AF XY: 0.00000963 AC XY: 7AN XY: 727226
GnomAD4 genome AF: 0.000112 AC: 17AN: 152326Hom.: 0 Cov.: 32 AF XY: 0.000134 AC XY: 10AN XY: 74484
ClinVar
Submissions by phenotype
not specified Uncertain:3
Variant summary: RAD51C c.200A>G (p.Glu67Gly) results in a non-conservative amino acid change in the encoded protein sequence. Three 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 251452 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.200A>G has been reported in the literature in an individual affected with breast cancer (Ding_2017). This report does not provide unequivocal conclusions about association of the variant with Hereditary Breast And Ovarian Cancer Syndrome. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Seven clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 and all classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -
DNA sequence analysis of the RAD51C gene demonstrated a sequence change, c.200A>G, in exon 2 that results in an amino acid change, p.Glu67Gly. This sequence change has been described in the gnomAD database with a frequency of 0.04% in the African/African American subpopulation (dbSNP rs375451955). The p.Glu67Gly change affects a moderately conserved amino acid residue located in a domain of the RAD51C protein that is known to be functional. The p.Glu67Gly substitution appears to be benign using several in-silico pathogenicity prediction tools (SIFT, PolyPhen2, Align GVGD, REVEL). This sequence change does not appear to have been previously described in individuals with RAD51C-related disorders. Due to insufficient evidences and the lack of functional studies, the clinical significance of the p.Glu67Gly change remains unknown at this time. -
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Hereditary cancer-predisposing syndrome Uncertain:2Benign:1
This missense variant replaces glutamic acid with glycine at codon 67 of the RAD51C 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. This variant has been identified in 11/282858 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. -
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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. -
Fanconi anemia complementation group O;C3150659:Breast-ovarian cancer, familial, susceptibility to, 3 Uncertain:1
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not provided Uncertain:1
In silico analysis supports that this missense variant does not alter protein structure/function; Observed in an individual with breast cancer (PMID: 28864920); This variant is associated with the following publications: (PMID: 28864920) -
Fanconi anemia complementation group O Uncertain:1
This sequence change replaces glutamic acid, which is acidic and polar, with glycine, which is neutral and non-polar, at codon 67 of the RAD51C protein (p.Glu67Gly). This variant is present in population databases (rs375451955, gnomAD 0.05%). This variant has not been reported in the literature in individuals affected with RAD51C-related conditions. ClinVar contains an entry for this variant (Variation ID: 182832). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt RAD51C protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Breast-ovarian cancer, familial, susceptibility to, 3 Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at