NM_013254.4:c.40A>G

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBS2_Supporting

The NM_013254.4(TBK1):c.40A>G(p.Ile14Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000062 in 1,613,842 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

TBK1
NM_013254.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 1.61

Variant links:

Genes affected

TBK1 (HGNC:11584): (TANK binding kinase 1) The NF-kappa-B (NFKB) complex of proteins is inhibited by I-kappa-B (IKB) proteins, which inactivate NFKB by trapping it in the cytoplasm. Phosphorylation of serine residues on the IKB proteins by IKB kinases marks them for destruction via the ubiquitination pathway, thereby allowing activation and nuclear translocation of the NFKB complex. The protein encoded by this gene is similar to IKB kinases and can mediate NFKB activation in response to certain growth factors. The protein is also an important kinase for antiviral innate immunity response. [provided by RefSeq, Sep 2021]

TBK1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.067251116).

BS2

High AC in GnomAdExome4 at 6 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBK1	NM_013254.4 link	c.40A>G	p.Ile14Val	missense_variant	Exon 2 of 21	ENST00000331710.10	NP_037386.1	Q9UHD2
TBK1	XM_005268809.2 link	c.40A>G	p.Ile14Val	missense_variant	Exon 2 of 21		XP_005268866.1	Q9UHD2
TBK1	XM_005268810.2 link	c.40A>G	p.Ile14Val	missense_variant	Exon 2 of 21		XP_005268867.1	Q9UHD2
TBK1	XR_007063071.1 link	n.139A>G		non_coding_transcript_exon_variant	Exon 2 of 18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TBK1	ENST00000331710.10 link	c.40A>G	p.Ile14Val	missense_variant	Exon 2 of 21	1	NM_013254.4	ENSP00000329967.5		Q9UHD2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251158

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135748

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.00000410

AC:

AN:

1461682

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727130

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152160

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74340

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000675

Hom.:

Bravo

AF:

0.0000227

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 15, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: TBK1 c.40A>G (p.Ile14Val) results in a conservative amino acid change located in the Protein kinase domain (IPR000719) of the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 2e-05 in 251158 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.40A>G in individuals affected with Autoinflammation with arthritis and vasculitis has been reported. At least one publication reports experimental evidence evaluating an impact on protein function, with the variant showing no damaging effect on NFKB-induced luciferase activity compared to WT (e.g. vanderZee_2017). The following publication has been ascertained in the context of this evaluation (PMID: 28008748). ClinVar contains an entry for this variant (Variation ID: 475939). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Frontotemporal dementia and/or amyotrophic lateral sclerosis 4

Uncertain:1

Sep 03, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 14 of the TBK1 protein (p.Ile14Val). 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. Experimental studies have shown that this missense change does not substantially affect TBK1 function (PMID: 28008748). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt TBK1 protein function. ClinVar contains an entry for this variant (Variation ID: 475939). This variant has not been reported in the literature in individuals affected with TBK1-related conditions. This variant is present in population databases (rs781325780, gnomAD 0.007%). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.061

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Benign

0.88

DEOGEN2

Benign

0.054

T;.;T

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.10

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.71

T;T;T

M_CAP

Benign

0.0063

MetaRNN

Benign

0.067

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.93

N;.;.

PrimateAI

Uncertain

0.55

PROVEAN

Benign

0.070

N;N;N

REVEL

Benign

0.11

Sift

Benign

0.81

T;T;T

Sift4G

Benign

1.0

T;T;T

Polyphen

0.058

B;.;.

Vest4

0.11

MutPred

0.40

Loss of stability (P = 0.2731);Loss of stability (P = 0.2731);Loss of stability (P = 0.2731);

MVP

0.24

MPC

0.28

ClinPred

0.12

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.18

gMVP

0.18

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over