Variant 16-1229331-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BP4_Strong

The NM_024164.6(TPSB2):c.359C>T(p.Ala120Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000093 ( 0 hom., cov: 4)

Exomes 𝑓: 0.0017 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

TPSB2
NM_024164.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.144

Variant links:

Genes affected

TPSB2 (HGNC:14120): (tryptase beta 2) Tryptases comprise a family of trypsin-like serine proteases, the peptidase family S1. Tryptases are enzymatically active only as heparin-stabilized tetramers, and they are resistant to all known endogenous proteinase inhibitors. Several tryptase genes are clustered on chromosome 16p13.3. These genes are characterized by several distinct features. They have a highly conserved 3' UTR and contain tandem repeat sequences at the 5' flank and 3' UTR which are thought to play a role in regulation of the mRNA stability. These genes have an intron immediately upstream of the initiator Met codon, which separates the site of transcription initiation from protein coding sequence. This feature is characteristic of tryptases but is unusual in other genes. The alleles of this gene exhibit an unusual amount of sequence variation, such that the alleles were once thought to represent two separate genes, beta II and beta III. Beta tryptases appear to be the main isoenzymes expressed in mast cells, whereas in basophils, alpha-tryptases predominate. Tryptases have been implicated as mediators in the pathogenesis of asthma and other allergic and inflammatory disorders. [provided by RefSeq, Jul 2008]

TPSB2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0455395).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TPSB2	NM_024164.6 linkuse as main transcript	c.359C>T	p.Ala120Val	missense_variant	4/6	ENST00000606293.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TPSB2	ENST00000606293.5 linkuse as main transcript	c.359C>T	p.Ala120Val	missense_variant	4/6	1	NM_024164.6	P2

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

21584

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000412

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:

0.0000753

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00335

AC:

215

AN:

64122

Hom.:

AF XY:

0.00320

AC XY:

107

AN XY:

33470

show subpopulations

Gnomad AFR exome

AF:

0.000680

Gnomad AMR exome

AF:

0.00393

Gnomad ASJ exome

AF:

0.00424

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00275

Gnomad FIN exome

AF:

0.00125

Gnomad NFE exome

AF:

0.00436

Gnomad OTH exome

AF:

0.00359

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00169

AC:

921

AN:

545332

Hom.:

Cov.:

AF XY:

0.00162

AC XY:

450

AN XY:

277938

show subpopulations

Gnomad4 AFR exome

AF:

0.000343

Gnomad4 AMR exome

AF:

0.00103

Gnomad4 ASJ exome

AF:

0.00176

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000886

Gnomad4 FIN exome

AF:

0.00415

Gnomad4 NFE exome

AF:

0.00171

Gnomad4 OTH exome

AF:

0.00234

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000926

AC:

AN:

21588

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

9332

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000411

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000753

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.00156

Hom.:

ExAC

AF:

0.000199

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

Nov 19, 2021

The c.359C>T (p.A120V) alteration is located in exon 4 (coding exon 3) of the TPSB2 gene. This alteration results from a C to T substitution at nucleotide position 359, causing the alanine (A) at amino acid position 120 to be replaced by a valine (V). 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

BayesDel_addAF

Uncertain

0.075

BayesDel_noAF

Benign

-0.13

CADD

Benign

DANN

Uncertain

1.0

Eigen

Benign

-0.44

Eigen_PC

Benign

-0.70

FATHMM_MKL

Benign

0.075

LIST_S2

Benign

0.73

T;T

M_CAP

Uncertain

0.18

MetaRNN

Benign

0.046

T;T

MetaSVM

Benign

-0.59

MutationTaster

Benign

1.0

PrimateAI

Benign

0.31

Sift4G

Uncertain

0.035

D;D

Vest4

0.34

MutPred

0.60

Loss of stability (P = 0.1194);.;

MVP

0.18

ClinPred

0.053

GERP RS

-1.2

gMVP

0.25

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