Genetic Variant TSKU:p.Thr177Met (chr11-76796146-C-T) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_015516.4(TSKU):c.530C>T(p.Thr177Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000521 in 1,613,694 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000055 ( 0 hom. )

Consequence

TSKU
NM_015516.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0230

Variant links:

Genes affected

TSKU (HGNC:28850): (tsukushi, small leucine rich proteoglycan) Predicted to enable transforming growth factor beta binding activity. Predicted to be involved in several processes, including animal organ development; cholesterol efflux; and cholesterol homeostasis. Predicted to act upstream of or within several processes, including ciliary body morphogenesis; negative regulation of Wnt signaling pathway; and telencephalon development. Predicted to be located in extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

TSKU links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0321424).

BS2

High AC in GnomAdExome4 at 81 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TSKU	NM_015516.4 link	c.530C>T	p.Thr177Met	missense_variant	Exon 2 of 2	ENST00000333090.5	NP_056331.2	Q8WUA8A0A024R5J8B3KRF9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TSKU	ENST00000333090.5 link	c.530C>T	p.Thr177Met	missense_variant	Exon 2 of 2	1	NM_015516.4	ENSP00000332668.4		Q8WUA8

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000798

AC:

AN:

250734

Hom.:

AF XY:

0.000111

AC XY:

AN XY:

135640

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000763

Gnomad SAS exome

AF:

0.0000654

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000554

AC:

AN:

1461410

Hom.:

Cov.:

AF XY:

0.0000756

AC XY:

AN XY:

727032

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000894

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00116

Gnomad4 SAS exome

AF:

0.000128

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000162

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152284

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74448

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000194

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ExAC

AF:

0.0000906

AC:

Asia WGS

AF:

0.00115

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 14, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.530C>T (p.T177M) alteration is located in exon 2 (coding exon 1) of the TSKU gene. This alteration results from a C to T substitution at nucleotide position 530, causing the threonine (T) at amino acid position 177 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.68

CADD

Benign

1.8

DANN

Benign

0.68

DEOGEN2

Benign

0.12

T;T;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.27

LIST_S2

Benign

0.43

T;.;.

M_CAP

Benign

0.0043

MetaRNN

Benign

0.032

T;T;T

MetaSVM

Benign

-0.92

MutationAssessor

Benign

0.0

N;N;N

PrimateAI

Benign

0.26

PROVEAN

Benign

-0.15

.;N;N

REVEL

Benign

0.024

Sift

Benign

0.11

.;T;T

Sift4G

Benign

0.11

T;T;T

Polyphen

0.54

P;P;P

Vest4

0.13

MutPred

0.44

Loss of glycosylation at T177 (P = 0.02);Loss of glycosylation at T177 (P = 0.02);Loss of glycosylation at T177 (P = 0.02);

MVP

0.043

MPC

0.44

ClinPred

0.015

GERP RS

1.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.011

gMVP

0.23

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