rs746681057
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.
The NM_005732.4(RAD50):c.53A>G(p.Glu18Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,613,978 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_005732.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
RAD50 | ENST00000378823.8 | c.53A>G | p.Glu18Gly | missense_variant | Exon 1 of 25 | 1 | NM_005732.4 | ENSP00000368100.4 | ||
ENSG00000283782 | ENST00000640655.2 | c.-168-1907A>G | intron_variant | Intron 2 of 25 | 5 | ENSP00000491596.2 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152268Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.00000795 AC: 2AN: 251492Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135922
GnomAD4 exome AF: 0.00000342 AC: 5AN: 1461710Hom.: 0 Cov.: 34 AF XY: 0.00000275 AC XY: 2AN XY: 727174
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152268Hom.: 0 Cov.: 33 AF XY: 0.0000134 AC XY: 1AN XY: 74404
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:2
The p.E18G variant (also known as c.53A>G), located in coding exon 1 of the RAD50 gene, results from an A to G substitution at nucleotide position 53. The glutamic acid at codon 18 is replaced by glycine, an amino acid with similar properties. In one study, this variant was reported in 4/60,466 breast cancer cases and in 5/53,461 controls (Dorling et al. N Engl J Med. 2021 02;384:428-439). This amino acid position is highly 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 sequence change replaces glutamic acid, which is acidic and polar, with glycine, which is neutral and non-polar, at codon 18 of the RAD50 protein (p.Glu18Gly). This variant is present in population databases (rs746681057, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with RAD50-related conditions. ClinVar contains an entry for this variant (Variation ID: 480398). 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 RAD50 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. -
not provided Uncertain:1
In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Variants in candidate genes are classified as variants of uncertain significance in accordance with ACMG guidelines (Richards et al., 2015); Identified in individuals with breast cancer and also in unaffected controls (Dorling et al., 2021); This variant is associated with the following publications: (PMID: 33471991) -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at