rs769196703
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate
The NM_005732.4(RAD50):c.761G>A(p.Arg254His) variant causes a missense change. The variant allele was found at a frequency of 0.0000342 in 1,460,310 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. 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 Likely_benign. Variant got -2 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
RAD50 | ENST00000378823.8 | c.761G>A | p.Arg254His | missense_variant | Exon 6 of 25 | 1 | NM_005732.4 | ENSP00000368100.4 | ||
ENSG00000283782 | ENST00000640655.2 | c.464G>A | p.Arg155His | missense_variant | Exon 7 of 26 | 5 | ENSP00000491596.2 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 exomes AF: 0.0000642 AC: 16AN: 249412Hom.: 0 AF XY: 0.0000888 AC XY: 12AN XY: 135116
GnomAD4 exome AF: 0.0000342 AC: 50AN: 1460310Hom.: 0 Cov.: 31 AF XY: 0.0000441 AC XY: 32AN XY: 726416
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:2
The p.R254H variant (also known as c.761G>A), located in coding exon 6 of the RAD50 gene, results from a G to A substitution at nucleotide position 761. The arginine at codon 254 is replaced by histidine, an amino acid with highly similar properties. 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 sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 254 of the RAD50 protein (p.Arg254His). This variant is present in population databases (rs769196703, gnomAD 0.05%). 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: 220625). An algorithm developed to predict the effect of missense changes on protein structure and function outputs the following: PolyPhen-2: "Benign". The histidine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect 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. -
not provided Uncertain:1
The RAD50 c.761G>A (p.Arg254His) variant has been reported in the published literature in individuals with breast cancer (PMID: 30982232 (2019), 33471991 (2021), see also LOVD (http://databases.lovd.nl/shared/genes/RAD50)). The frequency of this variant in the general population, 0.00046 (14/30382 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. -
Nijmegen breakage syndrome-like disorder Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at