rs181016343
Variant summary
Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2
The NM_005732.4(RAD50):c.3036+5G>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000751 in 1,613,382 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_005732.4 splice_region, intron
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: Benign. The variant received -13 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| RAD50 | ENST00000378823.8 | c.3036+5G>A | splice_region_variant, intron_variant | Intron 19 of 24 | 1 | NM_005732.4 | ENSP00000368100.4 | |||
| ENSG00000283782 | ENST00000638452.2 | c.2739+5G>A | splice_region_variant, intron_variant | Intron 21 of 26 | 5 | ENSP00000492349.2 |
Frequencies
GnomAD3 genomes AF: 0.000809 AC: 123AN: 152102Hom.: 2 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.00139 AC: 348AN: 250832 AF XY: 0.00122 show subpopulations
GnomAD4 exome AF: 0.000745 AC: 1089AN: 1461162Hom.: 5 Cov.: 31 AF XY: 0.000748 AC XY: 544AN XY: 726880 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.000808 AC: 123AN: 152220Hom.: 2 Cov.: 32 AF XY: 0.000672 AC XY: 50AN XY: 74424 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Uncertain:2Benign:2
RAD50 has been only recently described in association with cancer predisposition and the risks are not well understood. This variant is denoted RAD50 IVS19+5G>A, or c.3036+5G>A and consists of a G>A nucleotide substitution at the +5 position of intron 19 of the RAD50 gene. This variant has not, to our knowledge, been published in the literature as pathogenic or benign. RAD50 3036+5G>A occurs at a position that is well conserved throughout evolution. This particular nucleotide substitution was observed in multiple subpopulations, with the highest allele frequency of 0.09% (8/8588) in European Americans in the NHLBI Exome Sequencing Project. Multiple in silico splicing models predict a reduced likelihood that the nearby canonical donor splice site is utilized. At the molecular level, the impact of this missense variant on protein structure and function is not known and we consider this to be a variant of uncertain significance. Futhermore, based on the currently available information, cancer risks associated with this variant, and the RAD50 gene, remain unclear. -
RAD50: BP4, BS1, BS2 -
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Hereditary cancer-predisposing syndrome Uncertain:2Benign:2
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This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
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Nijmegen breakage syndrome-like disorder Uncertain:1Benign:3
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This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
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not specified Uncertain:2Benign:1
Variant summary: The RAD50 c.3036+5G>A variant involves the alteration of a non-conserved intronic nucleotide. One in silico tool predicts a polymorphism outcome for this variant. 5/5 splice prediction tools predict a weakening effect on the canonical splicing donor site and 3/5 predict loss of a cryptic splicing donor site at the nucleotide of interest. However, these predictions have yet to be confirmed by functional studies. This variant was found in 352/276630 control chromosomes, predominantly observed in the Ashkenazi Jewish subpopulation at a frequency of 0.013132 (133/10128). This frequency is about 210 times the estimated maximal expected allele frequency of a pathogenic RAD50 variant (0.0000625), suggesting this is likely a benign polymorphism found primarily in the populations of Ashkenazi Jewish origin. This variant has been reported in affected individuals without strong evidence for causality. In addition, multiple clinical diagnostic laboratories/reputable databases classified this variant as likely benign/VUS, all without evidence for independent evaluation. Taken together, this variant is currently classified as likely benign. -
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at