rs549559726
Variant summary
Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2
The NM_005732.4(RAD50):c.2209C>G(p.Gln737Glu) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000715 in 1,609,376 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/23 in silico tools predict a benign outcome for this variant. 3/3 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 missense, splice_region
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -8 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
RAD50 | ENST00000378823.8 | c.2209C>G | p.Gln737Glu | missense_variant, splice_region_variant | Exon 14 of 25 | 1 | NM_005732.4 | ENSP00000368100.4 | ||
ENSG00000283782 | ENST00000640655.2 | c.1912C>G | p.Gln638Glu | missense_variant, splice_region_variant | Exon 15 of 26 | 5 | ENSP00000491596.2 |
Frequencies
GnomAD3 genomes AF: 0.0000395 AC: 6AN: 152024Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000526 AC: 13AN: 247246Hom.: 0 AF XY: 0.0000598 AC XY: 8AN XY: 133688
GnomAD4 exome AF: 0.0000748 AC: 109AN: 1457234Hom.: 2 Cov.: 31 AF XY: 0.0000690 AC XY: 50AN XY: 725010
GnomAD4 genome AF: 0.0000394 AC: 6AN: 152142Hom.: 0 Cov.: 32 AF XY: 0.0000538 AC XY: 4AN XY: 74384
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
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. -
This sequence change replaces glutamine, which is neutral and polar, with glutamic acid, which is acidic and polar, at codon 737 of the RAD50 protein (p.Gln737Glu). This variant is present in population databases (rs549559726, gnomAD 0.07%). This missense change has been observed in individual(s) with biliary tract cancer and/or pancreatic cancer (PMID: 31666926, 36135357). ClinVar contains an entry for this variant (Variation ID: 187622). 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:1
Variant summary: RAD50 c.2209C>G (p.Gln737Glu) results in a conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. Consensus agreement among computation tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 5.3e-05 in 247246 control chromosomes, predominantly at a frequency of 0.00071 within the East Asian subpopulation in the gnomAD database. This frequency is not significantly higher than estimated for a pathogenic variant in RAD50 causing Nijmegen Breakage Syndrome-Like Disorder (5.3e-05 vs 0.0024), allowing no conclusion about variant significance. c.2209C>G has been reported in the literature in an individual affected with biliary tract carcinoma (BTC) (example, Terashima_2019). These report(s) do not provide unequivocal conclusions about association of the variant with Nijmegen Breakage Syndrome-Like Disorder/RAD50-associated cancers. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication have been ascertained in the context of this evaluation (PMID: 31666926). ClinVar contains an entry for this variant (Variation ID: 187622). Based on the evidence outlined above, the variant was classified as uncertain significance. -
not provided Uncertain:1
The RAD50 c.2209C>G (p.Gln737Glu) variant has been reported in the published literature in individuals affected with pancreatic cancer (PMID: 36135357 (2022)), ovarian cancer (PMID: 32019284 (2020)), and bilary tract cancer (PMID: 31666926 (2019)). The frequency of this variant in the general population, 0.00071 (13/18184 chromosomes in East Asian subpopulation (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is higher than would generally be expected for pathogenic variants in this gene. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded conflicting predictions that this variant is deleterious or benign. Based on the available information, we are unable to determine the clinical significance of this variant. -
Hereditary breast ovarian cancer syndrome Uncertain:1
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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