chr7-128967314-T-G
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Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2PP2BP4
The NM_012470.4(TNPO3):c.2677A>C(p.Lys893Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Consequence
TNPO3
NM_012470.4 missense
NM_012470.4 missense
Scores
1
4
14
Clinical Significance
Conservation
PhyloP100: 7.74
Genes affected
TNPO3 (HGNC:17103): (transportin 3) The protein encoded by this gene is a nuclear import receptor for serine/arginine-rich (SR) proteins such as the splicing factors SFRS1 and SFRS2. The encoded protein has also been shown to be involved in HIV-1 infection, apparently through interaction with the HIV-1 capsid protein. Several protein-coding and non-coding transcript variants have been found for this gene. [provided by RefSeq, Apr 2020]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), TNPO3. . Gene score misZ 3.442 (greater than the threshold 3.09). Trascript score misZ 3.4155 (greater than threshold 3.09). GenCC has associacion of gene with autosomal dominant limb-girdle muscular dystrophy type 1F.
BP4
Computational evidence support a benign effect (MetaRNN=0.26938477).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TNPO3 | NM_012470.4 | c.2677A>C | p.Lys893Gln | missense_variant | 21/23 | ENST00000265388.10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TNPO3 | ENST00000265388.10 | c.2677A>C | p.Lys893Gln | missense_variant | 21/23 | 1 | NM_012470.4 | P1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
Cov.:
32
GnomAD4 exome Cov.: 28
GnomAD4 exome
Cov.:
28
GnomAD4 genome Cov.: 32
GnomAD4 genome
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Autosomal dominant limb-girdle muscular dystrophy type 1F Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Oct 07, 2021 | This variant has not been reported in the literature in individuals affected with TNPO3-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 (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. This variant is not present in population databases (ExAC no frequency). This sequence change replaces lysine with glutamine at codon 893 of the TNPO3 protein (p.Lys893Gln). The lysine residue is moderately conserved and there is a small physicochemical difference between lysine and glutamine. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
BayesDel_addAF
Uncertain
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
DEOGEN2
Benign
T;T;T;.;T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Pathogenic
D
LIST_S2
Uncertain
D;D;D;D;.
M_CAP
Benign
T
MetaRNN
Benign
T;T;T;T;T
MetaSVM
Benign
T
MutationAssessor
Benign
L;.;.;.;.
MutationTaster
Benign
D;D;D;D;D
PrimateAI
Uncertain
T
PROVEAN
Benign
N;.;N;N;N
REVEL
Benign
Sift
Benign
T;.;T;T;T
Sift4G
Benign
T;T;T;T;T
Polyphen
B;B;.;.;B
Vest4
MutPred
0.38
.;Loss of methylation at K927 (P = 0.0121);.;.;Loss of methylation at K927 (P = 0.0121);
MVP
MPC
ClinPred
D
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
Publications
No publications associated with this variant yet.