17-35119124-C-T
Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2
The NM_002878.4(RAD51D):c.131G>A(p.Gly44Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000155 in 1,613,622 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_002878.4 missense
Scores
Clinical Significance
Conservation
Genome browser will be placed here
ACMG classification
Verdict is Likely_benign. Variant got -4 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
RAD51D | ENST00000345365.11 | c.131G>A | p.Gly44Asp | missense_variant | Exon 2 of 10 | 1 | NM_002878.4 | ENSP00000338790.6 | ||
ENSG00000267618 | ENST00000593039.5 | c.3+2167G>A | intron_variant | Intron 1 of 6 | 2 | ENSP00000466834.1 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152206Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000795 AC: 2AN: 251456Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135916
GnomAD4 exome AF: 0.0000157 AC: 23AN: 1461416Hom.: 0 Cov.: 31 AF XY: 0.0000151 AC XY: 11AN XY: 727036
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152206Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74364
ClinVar
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 4 Uncertain:4
- -
- -
This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk. -
This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 44 of the RAD51D protein (p.Gly44Asp). This variant is present in population databases (rs374730714, gnomAD 0.003%). This missense change has been observed in individual(s) with ovarian cancer (PMID: 26261251). ClinVar contains an entry for this variant (Variation ID: 184924). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. 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. -
not specified Uncertain:2
- -
Variant summary: RAD51D c.131G>A (p.Gly44Asp) results in a non-conservative amino acid change located in the RAD51D, N-terminal domain (IPR048943) of the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 8e-06 in 251456 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.131G>A has been reported in the literature in at least one individual affected with ovariant cancer, or affected with both gastrointestinal stromal tumor and peritoneal mesothelioma, all without strong evidence for causality (e.g. Song_2015, Courelli_2022). These reports do 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. The following publications have been ascertained in the context of this evaluation (PMID: 26261251, 35849291). ClinVar contains an entry for this variant (Variation ID: 184924). Based on the evidence outlined above, the variant was classified as uncertain significance. -
not provided Uncertain:2
The RAD51D c.131G>A (p.Gly44Asp) variant has been reported in individuals with breast cancer (PMID: 32885271 (2021)) and ovarian cancer (PMID: 26261251 (2015)). The frequency of this variant in the general population, 0.000008 (2/251456 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Based on the available information, we are unable to determine the clinical significance of this variant. -
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis indicates that this missense variant does not alter protein structure/function; Observed in individuals with ovarian, liver, or other cancer (PMID: 26261251, 29625052, 35849291); This variant is associated with the following publications: (PMID: 26261251, 29625052, 36451132, 21111057, 35849291) -
Hereditary cancer-predisposing syndrome Uncertain:2
The p.G44D variant (also known as c.131G>A), located in coding exon 2 of the RAD51D gene, results from a G to A substitution at nucleotide position 131. The glycine at codon 44 is replaced by aspartic acid, an amino acid with similar properties. This alteration was identified in an individual diagnosed with ovarian cancer (Song H et al. J. Clin. Oncol., 2015 Sep;33:2901-7). This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
This missense variant replaces glycine with aspartic acid at codon 44 of the RAD51D 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 been reported in an individual affected with ovarian cancer (PMID: 26261251). This variant has been identified in 2/251456 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. -
Malignant tumor of breast Uncertain:1
The RAD51D p.Gly44Asp variant was identified in 1 of 6858 proband chromosomes (frequency: 0.0002) from individuals or families with epithelial ovarian cancer and was not identified in 4000 control chromosomes from healthy individuals (Song 2015). The variant was also identified in dbSNP (ID: rs374730714) as "With Uncertain significance allele", and in ClinVar (classified as uncertain significance by Invitae, Ambry Genetics, GeneDx and three other submitters). The variant was identified in control databases in 3 of 246268 chromosomes at a frequency of 0.00001 (Genome Aggregation Database Feb 27, 2017). The variant was observed in the European population in 3 of 111716 chromosomes (freq: 0.00003), but was not observed in the African, Other, Latino, Ashkenazi Jewish, East Asian, Finnish, or South Asian populations. The p.Gly44 residue is conserved in mammals and computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) provide inconsistent predictions regarding the impact to the protein; this information is not very predictive of pathogenicity. The variant occurs outside of the splicing consensus sequence and 2 of 4 in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplice) predict a greater than 10% difference in splicing; this is not very predictive of pathogenicity. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time. This variant is classified as a variant of uncertain significance. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at