rs730881845
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate
The NM_002485.5(NBN):c.613A>G(p.Ile205Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000143 in 1,612,920 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. I205T) has been classified as Uncertain significance.
Frequency
Consequence
NM_002485.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
NBN | NM_002485.5 | c.613A>G | p.Ile205Val | missense_variant | 6/16 | ENST00000265433.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
NBN | ENST00000265433.8 | c.613A>G | p.Ile205Val | missense_variant | 6/16 | 1 | NM_002485.5 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000263 AC: 4AN: 152186Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000359 AC: 9AN: 250822Hom.: 0 AF XY: 0.0000442 AC XY: 6AN XY: 135652
GnomAD4 exome AF: 0.0000130 AC: 19AN: 1460734Hom.: 0 Cov.: 30 AF XY: 0.0000179 AC XY: 13AN XY: 726702
GnomAD4 genome ? AF: 0.0000263 AC: 4AN: 152186Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74354
ClinVar
Submissions by phenotype
Microcephaly, normal intelligence and immunodeficiency Uncertain:3
Uncertain significance, no assertion criteria provided | clinical testing | Natera, Inc. | Sep 16, 2020 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Dec 05, 2023 | This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 205 of the NBN protein (p.Ile205Val). This variant is present in population databases (rs730881845, gnomAD 0.01%). This missense change has been observed in individual(s) with a personal or family history of breast cancer, and an individual undergoing genetic testing for suspected Lynch syndrome (PMID: 25980754, 29484706). ClinVar contains an entry for this variant (Variation ID: 182714). 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 disruptive. 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Nov 07, 2021 | - - |
not provided Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Apr 04, 2023 | In silico analysis supports that this missense variant does not alter protein structure/function; Identified in individuals with breast cancer and in individual(s) with Lynch syndrome-associated cancer and/or polyps (Tung et al., 2015; Yurgelun et al., 2015; Guacci et al., 2018); This variant is associated with the following publications: (PMID: 25186627, 25980754, 24894818, 29484706) - |
Uncertain significance, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Dec 11, 2017 | - - |
Aplastic anemia Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Oct 19, 2023 | - - |
Hereditary cancer-predisposing syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Oct 31, 2022 | The p.I205V variant (also known as c.613A>G), located in coding exon 6 of the NBN gene, results from an A to G substitution at nucleotide position 613. The isoleucine at codon 205 is replaced by valine, an amino acid with highly similar properties. This amino acid position is highly 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. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at