Variant 22-26540882-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_003595.5(TPST2):c.749A>G(p.Lys250Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000335 in 1,614,132 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 0.000099 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000027 ( 0 hom. )

Consequence

TPST2
NM_003595.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.449

Variant links:

Genes affected

TPST2 (HGNC:12021): (tyrosylprotein sulfotransferase 2) The protein encoded by this gene catalyzes the O-sulfation of tyrosine residues within acidic regions of proteins. The encoded protein is a type II integral membrane protein found in the Golgi body. Alternative splicing produces multiple transcript variants encoding distinct isoforms. [provided by RefSeq, May 2018]

TPST2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.020944417).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TPST2	NM_003595.5 linkuse as main transcript	c.749A>G	p.Lys250Arg	missense_variant	3/7	ENST00000338754.9	NP_003586.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TPST2	ENST00000338754.9 linkuse as main transcript	c.749A>G	p.Lys250Arg	missense_variant	3/7	1	NM_003595.5	ENSP00000339813	P1

Frequencies

GnomAD3 genomes

AF:

0.0000986

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000338

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:

0.00316

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000478

AC:

AN:

251288

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135834

show subpopulations

Gnomad AFR exome

AF:

0.000615

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:

0.00000880

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000267

AC:

AN:

1461852

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

727232

show subpopulations

Gnomad4 AFR exome

AF:

0.00105

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:

0.00000180

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000985

AC:

AN:

152280

Hom.:

Cov.:

AF XY:

0.0000671

AC XY:

AN XY:

74464

show subpopulations

Gnomad4 AFR

AF:

0.000337

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

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.000162

ExAC

AF:

0.0000494

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 24, 2023

The c.749A>G (p.K250R) alteration is located in exon 3 (coding exon 1) of the TPST2 gene. This alteration results from a A to G substitution at nucleotide position 749, causing the lysine (K) at amino acid position 250 to be replaced by an arginine (R). 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

0.067

BayesDel_addAF

Benign

-0.56

BayesDel_noAF

Benign

-0.67

CADD

Benign

DANN

Benign

0.070

DEOGEN2

Benign

0.089

T;T;T

Eigen

Benign

-0.90

Eigen_PC

Benign

-0.71

FATHMM_MKL

Benign

0.37

LIST_S2

Benign

0.70

.;.;T

M_CAP

Benign

0.0039

MetaRNN

Benign

0.021

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.72

N;N;N

MutationTaster

Benign

0.55

N;N;N

PrimateAI

Benign

0.33

PROVEAN

Benign

0.85

N;N;N

REVEL

Benign

0.085

Sift

Benign

1.0

T;T;T

Sift4G

Benign

1.0

T;T;T

Polyphen

0.0

B;B;B

Vest4

0.055

MutPred

0.32

Gain of phosphorylation at S248 (P = 0.1256);Gain of phosphorylation at S248 (P = 0.1256);Gain of phosphorylation at S248 (P = 0.1256);

MVP

0.10

MPC

0.48

ClinPred

0.023

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.091

gMVP

0.49

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