8-89970441-T-A
Variant summary
Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6_Very_StrongBP7
The NM_002485.5(NBN):c.819A>T(p.Thr273=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000103 in 1,613,938 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 Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. T273T) has been classified as Likely benign.
Frequency
Consequence
NM_002485.5 synonymous
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -13 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
NBN | NM_002485.5 | c.819A>T | p.Thr273= | synonymous_variant | 7/16 | ENST00000265433.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
NBN | ENST00000265433.8 | c.819A>T | p.Thr273= | synonymous_variant | 7/16 | 1 | NM_002485.5 | P1 |
Frequencies
GnomAD3 genomes AF: 0.0000591 AC: 9AN: 152208Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000716 AC: 18AN: 251338Hom.: 0 AF XY: 0.0000883 AC XY: 12AN XY: 135836
GnomAD4 exome AF: 0.000107 AC: 157AN: 1461730Hom.: 0 Cov.: 31 AF XY: 0.000117 AC XY: 85AN XY: 727180
GnomAD4 genome AF: 0.0000591 AC: 9AN: 152208Hom.: 0 Cov.: 32 AF XY: 0.0000672 AC XY: 5AN XY: 74380
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Benign:2
Likely benign, criteria provided, single submitter | curation | Sema4, Sema4 | Jun 11, 2021 | - - |
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Nov 20, 2014 | 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. - |
Microcephaly, normal intelligence and immunodeficiency Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Jan 31, 2024 | - - |
not provided Benign:1
Benign, criteria provided, single submitter | clinical testing | GeneDx | Mar 03, 2015 | - - |
NBN-related disorder Benign:1
Likely benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | Jul 23, 2019 | This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). - |
Malignant tumor of breast Benign:1
Likely benign, no assertion criteria provided | clinical testing | Department of Pathology and Laboratory Medicine, Sinai Health System | - | The NBN p.Thr273= variant was not identified in the literature nor was it identified in the LOVD 3.0, or Zhejiang Colon Cancer Database. The variant was identified in the following databases: dbSNP (ID: rs147660518) as With Likely benign allele, ClinVar (classified as likely benign by Invitae, Ambry Genetics), and Clinvitae (classified as likely benign by Invitae and ClinVar). The variant was identified in control databases in 18 of 277090 chromosomes at a frequency of 0.000065, in the following populations: European Non-Finnish in 15 of 126628 chromosomes (freq. 0.0001), Latino in 2 of 34386 chromosomes (freq. 0.0001), African in 1 of 24030 chromosomes (freq.0.00004) (Genome Aggregation Consortium Feb 27, 2017). The p.Thr273= variant is not expected to have clinical significance because it does not result in a change of amino acid and is not located in a known consensus splice site, however 3 of 5 in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer, HumanSpliceFinder) predict a greater than 10% difference in splicing (loss); this information is not predictive enough to assume pathogenicity. In summary, based on the above information, the clinical significance of this variant cannot be determined with certainty at this time although we would lean towards a more benign role for this variant. This variant is classified as likely benign. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at