rs1060503453

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_002485.5(NBN):​c.292A>G​(p.Thr98Ala) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Consequence

NBN
NM_002485.5 missense

Scores

1
11
7

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.22
Variant links:
Genes affected
NBN (HGNC:7652): (nibrin) Mutations in this gene are associated with Nijmegen breakage syndrome, an autosomal recessive chromosomal instability syndrome characterized by microcephaly, growth retardation, immunodeficiency, and cancer predisposition. The encoded protein is a member of the MRE11/RAD50 double-strand break repair complex which consists of 5 proteins. This gene product is thought to be involved in DNA double-strand break repair and DNA damage-induced checkpoint activation. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.792

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
NBNNM_002485.5 linkc.292A>G p.Thr98Ala missense_variant Exon 3 of 16 ENST00000265433.8 NP_002476.2 O60934

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
NBNENST00000265433.8 linkc.292A>G p.Thr98Ala missense_variant Exon 3 of 16 1 NM_002485.5 ENSP00000265433.4 O60934

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
31
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Microcephaly, normal intelligence and immunodeficiency Uncertain:1
Nov 08, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change replaces threonine, which is neutral and polar, with alanine, which is neutral and non-polar, at codon 98 of the NBN protein (p.Thr98Ala). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with NBN-related conditions. 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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.16
BayesDel_addAF
Uncertain
0.064
T
BayesDel_noAF
Benign
-0.15
CADD
Benign
21
DANN
Uncertain
1.0
DEOGEN2
Benign
0.39
T;T;.;.;.
Eigen
Uncertain
0.51
Eigen_PC
Uncertain
0.49
FATHMM_MKL
Uncertain
0.89
D
LIST_S2
Benign
0.71
T;T;T;T;T
M_CAP
Uncertain
0.13
D
MetaRNN
Pathogenic
0.79
D;D;D;D;D
MetaSVM
Uncertain
0.56
D
MutationAssessor
Benign
1.5
L;.;.;.;.
PrimateAI
Benign
0.35
T
PROVEAN
Uncertain
-2.9
D;D;D;D;D
REVEL
Uncertain
0.59
Sift
Uncertain
0.024
D;D;T;T;T
Sift4G
Uncertain
0.021
D;D;T;.;D
Polyphen
1.0
D;.;.;.;.
Vest4
0.21
MutPred
0.67
Loss of phosphorylation at T98 (P = 0.0523);.;Loss of phosphorylation at T98 (P = 0.0523);.;.;
MVP
0.97
MPC
0.37
ClinPred
0.98
D
GERP RS
5.7
Varity_R
0.48
gMVP
0.46

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr8-90993631; API