17-35107034-C-T
Variant summary
Our verdict is Likely benign. The variant received -3 ACMG points: 1P and 4B. PP3BS2
The NM_002878.4(RAD51D):c.434G>A(p.Arg145His) variant causes a missense change. The variant allele was found at a frequency of 0.0000353 in 1,613,978 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R145C) has been classified as Uncertain significance.
Frequency
Consequence
NM_002878.4 missense
Scores
Clinical Significance
Conservation
Publications
- breast-ovarian cancer, familial, susceptibility to, 4Inheritance: AD Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
- hereditary breast ovarian cancer syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- hereditary breast carcinomaInheritance: AD Classification: LIMITED Submitted by: ClinGen
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ACMG classification
Our verdict: Likely_benign. The variant received -3 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| RAD51D | NM_002878.4 | c.434G>A | p.Arg145His | missense_variant | Exon 5 of 10 | ENST00000345365.11 | NP_002869.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000210 AC: 32AN: 152092Hom.: 0 Cov.: 31 show subpopulations
GnomAD2 exomes AF: 0.0000398 AC: 10AN: 251460 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.0000171 AC: 25AN: 1461886Hom.: 0 Cov.: 32 AF XY: 0.0000179 AC XY: 13AN XY: 727246 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.000210 AC: 32AN: 152092Hom.: 0 Cov.: 31 AF XY: 0.000175 AC XY: 13AN XY: 74282 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Uncertain:4
Variant summary: The RAD51D c.434G>A (p.Arg145His) variant located in the P-loop containing nucleoside triphosphate hydrolase and C-terminal domain (via InterPro) causes a missense change involving a conserved nucleotide, which 4/4 in silico tools (SNPs&Go not captured here due to low reliability index) predict a "damaging" outcome, although these predictions have yet to be functionally assessed. The variant of interest was observed in the large, broad control population, ExAC, with an allele frequency of 6/121410 (1/20242), which does not exceed the estimated maximal expected allele frequency for a pathogenic RAD51D variant of 1/8000. One clinical diagnostic laboratory has classified this variant as uncertain significance. The variant of interest has been reported in at least one patient sample referred for NGS-based multigene hereditary-cancer testing without strong evidence for causality (Mu_2016). Taken together, the variant is classified as a variant of uncertain significance (VUS), until additional information becomes available. -
In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Observed in individuals with breast or prostate cancer, as well as in both cases and controls from a breast cancer study (PMID: 30111881, 32832836, 33471991); This variant is associated with the following publications: (PMID: 26057125, 27720647, 30111881, 33471991, 32832836, 21111057, 14704354, 19327148) -
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Hereditary cancer-predisposing syndrome Uncertain:3
The p.R145H variant (also known as c.434G>A), located in coding exon 5 of the RAD51D gene, results from a G to A substitution at nucleotide position 434. The arginine at codon 145 is replaced by histidine, an amino acid with highly similar properties. This variant was identified in a cohort of 3,579 African males diagnosed with prostate cancer who underwent multi-gene panel testing of 19 DNA repair and cancer predisposition genes (Matejcic M et al. JCO Precis Oncol, 2020 Jan;4:32-43). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -
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This missense variant replaces arginine with histidine at codon 145 of the RAD51D protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function. To our knowledge, functional studies have not been performed for this variant. This variant has been reported in an individual affected with breast cancer (PMID: 30111881). In a large breast cancer case-control meta-analysis, this variant was identified in 2/60466 cases and 1/53461 controls (OR=1.768, 95%CI 0.16 to 19.503, p-value=1; PMID: 33471991 - Leiden Open Variation Database DB-ID RAD51D_000140). This variant has also been identified in 16/282828 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. -
Breast-ovarian cancer, familial, susceptibility to, 4 Uncertain:3
This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 145 of the RAD51D protein (p.Arg145His). This variant is present in population databases (rs147264215, gnomAD 0.05%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with RAD51D-related disease (PMID: 30111881). ClinVar contains an entry for this variant (Variation ID: 187149). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on RAD51D protein function. 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. -
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RAD51D-related disorder Uncertain:1
The RAD51D c.434G>A variant is predicted to result in the amino acid substitution p.Arg145His. This variant has been reported as uncertain in a study of Greek patients with breast and ovarian cancer (Konstanta et al. 2018. PubMed ID: 30111881). This variant is reported in 0.056% of alleles in individuals of African descent in gnomAD and has been interpreted as variant of uncertain significance in the ClinVar database (https://www.ncbi.nlm.nih.gov/clinvar/variation/187149/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at