chr4-106046619-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001163435.3(TBCK):ā€‹c.2633A>Gā€‹(p.Asn878Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,612,642 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā˜…).

Frequency

Genomes: š‘“ 0.0000066 ( 0 hom., cov: 32)
Exomes š‘“: 0.0000014 ( 0 hom. )

Consequence

TBCK
NM_001163435.3 missense

Scores

4
15

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.31
Variant links:
Genes affected
TBCK (HGNC:28261): (TBC1 domain containing kinase) This gene encodes a protein that contains a protein kinase domain, a Rhodanase-like domain and the Tre-2/Bub2/Cdc16 (TBC) domain. The encoded protein is thought to play a role in actin organization, cell growth and cell proliferation by regulating the mammalian target of the rapamycin (mTOR) signaling pathway. This protein may also be involved in the transcriptional regulation of the components of the mTOR complex. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2014]

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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=0.118266135).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
TBCKNM_001163435.3 linkuse as main transcriptc.2633A>G p.Asn878Ser missense_variant 26/26 ENST00000394708.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
TBCKENST00000394708.7 linkuse as main transcriptc.2633A>G p.Asn878Ser missense_variant 26/261 NM_001163435.3 P1Q8TEA7-1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152120
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.00000137
AC:
2
AN:
1460522
Hom.:
0
Cov.:
28
AF XY:
0.00
AC XY:
0
AN XY:
726664
show subpopulations
Gnomad4 AFR exome
AF:
0.0000598
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:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152120
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74304
show subpopulations
Gnomad4 AFR
AF:
0.0000241
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000302

ClinVar

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

Submissions by phenotype

not provided Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingInvitaeJul 12, 2022ClinVar contains an entry for this variant (Variation ID: 1481375). 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: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The serine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. This variant has not been reported in the literature in individuals affected with TBCK-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 878 of the TBCK protein (p.Asn878Ser). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.067
BayesDel_addAF
Benign
-0.28
T
BayesDel_noAF
Benign
-0.64
CADD
Benign
17
DANN
Uncertain
0.99
DEOGEN2
Benign
0.0098
T;T;.;.;T
Eigen
Benign
-0.39
Eigen_PC
Benign
-0.25
FATHMM_MKL
Uncertain
0.84
D
LIST_S2
Uncertain
0.91
.;D;D;D;.
M_CAP
Benign
0.0039
T
MetaRNN
Benign
0.12
T;T;T;T;T
MetaSVM
Benign
-1.1
T
MutationAssessor
Benign
1.1
L;L;.;.;L
MutationTaster
Benign
1.0
D;D;D;D;D
PrimateAI
Uncertain
0.49
T
PROVEAN
Benign
-0.88
N;N;N;N;N
REVEL
Benign
0.091
Sift
Benign
0.19
T;T;T;T;T
Sift4G
Benign
0.45
T;T;T;T;T
Polyphen
0.0
B;B;B;B;B
Vest4
0.15
MutPred
0.43
Gain of glycosylation at N878 (P = 0.0426);Gain of glycosylation at N878 (P = 0.0426);.;.;Gain of glycosylation at N878 (P = 0.0426);
MVP
0.40
MPC
0.060
ClinPred
0.40
T
GERP RS
1.6
Varity_R
0.11
gMVP
0.58

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.

Other links and lift over

dbSNP: rs1734243867; hg19: chr4-106967776; API