rs375315737
Variant summary
Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP4
The NM_005732.4(RAD50):c.2549G>A(p.Arg850His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000868 in 1,612,074 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign 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. R850C) has been classified as Likely benign.
Frequency
Consequence
NM_005732.4 missense
Scores
Clinical Significance
Conservation
Publications
- Nijmegen breakage syndrome-like disorderInheritance: AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
- familial ovarian cancerInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
- hereditary breast carcinomaInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Likely_benign. The variant received -1 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt | 
|---|---|---|---|---|---|---|---|---|---|---|
| RAD50 | ENST00000378823.8 | c.2549G>A | p.Arg850His | missense_variant | Exon 16 of 25 | 1 | NM_005732.4 | ENSP00000368100.4 | ||
| ENSG00000283782 | ENST00000638452.2 | c.2252G>A | p.Arg751His | missense_variant | Exon 18 of 27 | 5 | ENSP00000492349.2 | 
Frequencies
GnomAD3 genomes  0.00000658  AC: 1AN: 152054Hom.:  0  Cov.: 32 show subpopulations 
GnomAD2 exomes  AF:  0.00000799  AC: 2AN: 250426 AF XY:  0.00000739   show subpopulations 
GnomAD4 exome  AF:  0.00000890  AC: 13AN: 1460020Hom.:  0  Cov.: 31 AF XY:  0.00000964  AC XY: 7AN XY: 726380 show subpopulations  ⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5. 
Age Distribution
GnomAD4 genome  0.00000658  AC: 1AN: 152054Hom.:  0  Cov.: 32 AF XY:  0.00  AC XY: 0AN XY: 74288 show subpopulations 
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome    Uncertain:2 
This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 850 of the RAD50 protein (p.Arg850His). This variant is present in population databases (rs375315737, gnomAD 0.008%). 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: 233818). 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. -
The p.R850H variant (also known as c.2549G>A), located in coding exon 16 of the RAD50 gene, results from a G to A substitution at nucleotide position 2549. The arginine at codon 850 is replaced by histidine, an amino acid with highly similar properties. This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
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