chr3-48467554-C-T
Position:
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_033629.6(TREX1):c.899C>T(p.Ala300Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 33)
Consequence
TREX1
NM_033629.6 missense
NM_033629.6 missense
Scores
2
1
14
Clinical Significance
Conservation
PhyloP100: 0.970
Genes affected
TREX1 (HGNC:12269): (three prime repair exonuclease 1) This gene encodes a nuclear protein with 3' exonuclease activity. The encoded protein may play a role in DNA repair and serve as a proofreading function for DNA polymerase. Mutations in this gene result in Aicardi-Goutieres syndrome, chilblain lupus, Cree encephalitis, and other diseases of the immune system. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2012]
ATRIP (HGNC:33499): (ATR interacting protein) This gene encodes an essential component of the DNA damage checkpoint. The encoded protein binds to single-stranded DNA coated with replication protein A. The protein also interacts with the ataxia telangiectasia and Rad3 related protein kinase, resulting in its accumulation at intranuclear foci induced by DNA damage. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2012]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 0 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.08485329).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TREX1 | NM_033629.6 | c.899C>T | p.Ala300Val | missense_variant | 2/2 | ENST00000625293.3 | |
ATRIP | NM_130384.3 | c.*2000C>T | 3_prime_UTR_variant | 13/13 | ENST00000320211.10 | ||
ATRIP-TREX1 | NR_153405.1 | n.4208C>T | non_coding_transcript_exon_variant | 15/15 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TREX1 | ENST00000625293.3 | c.899C>T | p.Ala300Val | missense_variant | 2/2 | NM_033629.6 | P1 | ||
ATRIP | ENST00000320211.10 | c.*2000C>T | 3_prime_UTR_variant | 13/13 | 1 | NM_130384.3 | P1 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD3 genomes
Cov.:
33
GnomAD4 exome Cov.: 33
GnomAD4 exome
Cov.:
33
GnomAD4 genome Cov.: 33
GnomAD4 genome
Cov.:
33
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Chilblain lupus 1;C0796126:Aicardi-Goutieres syndrome 1;C1860518:Retinal vasculopathy with cerebral leukoencephalopathy and systemic manifestations Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jul 25, 2022 | This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 300 of the TREX1 protein (p.Ala300Val). 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 output the following: SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The valine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. ClinVar contains an entry for this variant (Variation ID: 467832). This variant has not been reported in the literature in individuals affected with TREX1-related conditions. This variant is not present in population databases (gnomAD no frequency). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Uncertain
DEOGEN2
Benign
T;.;.;T;T;T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
D
M_CAP
Benign
D
MetaRNN
Benign
T;T;T;T;T;T
MetaSVM
Benign
T
MutationTaster
Benign
N;N;N;N;N;N
PrimateAI
Benign
T
PROVEAN
Benign
N;.;N;.;.;N
REVEL
Benign
Sift
Pathogenic
D;.;D;.;.;D
Sift4G
Pathogenic
D;.;D;.;.;D
Vest4
MVP
ClinPred
T
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at