dbSNP rs557145756: TPSB2:p.Gly77Val (chr16-1229569-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_024164.6(TPSB2):c.230G>T(p.Gly77Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G77E) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 18)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

TPSB2
NM_024164.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.133

Publications

0 publications found

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:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TPSB2	NM_024164.6 link	c.230G>T	p.Gly77Val	missense_variant	Exon 3 of 6	ENST00000606293.5	NP_077078.5	P20231A0A140VJT7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TPSB2	ENST00000606293.5 link	c.230G>T	p.Gly77Val	missense_variant	Exon 3 of 6	1	NM_024164.6	ENSP00000482743.1		P20231

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

178232

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

1396232

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

690532

African (AFR)

AF:

0.00

AC:

AN:

29540

American (AMR)

AF:

0.00

AC:

AN:

34752

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

22202

East Asian (EAS)

AF:

0.00

AC:

AN:

36980

South Asian (SAS)

AF:

0.00

AC:

AN:

73746

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49316

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1087946

Other (OTH)

AF:

0.00

AC:

AN:

57456

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000334

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Uncertain

0.097

BayesDel_noAF

Benign

-0.10

CADD

Benign

(source)

DANN

Uncertain

0.99

Eigen

Benign

0.059

Eigen_PC

Benign

-0.083

FATHMM_MKL

Benign

0.25

LIST_S2

Benign

0.20

T;T

M_CAP

Pathogenic

0.34

MetaRNN

Uncertain

0.59

D;D

MetaSVM

Uncertain

0.45

PhyloP100

0.13

PrimateAI

Uncertain

0.56

Sift4G

Benign

0.54

T;T

Vest4

0.49

MutPred

0.42

Gain of ubiquitination at K81 (P = 0.2044);.;

MVP

0.33

ClinPred

0.98

GERP RS

2.5

gMVP

0.44

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.24

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.24

Position offset: 2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over