Variant 22-23958409-C-T 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_001080843.4(GSTT2B):c.401G>A(p.Arg134His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000248 in 1,459,986 control chromosomes in the GnomAD database, including 1 homozygotes. 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 (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 19)

Exomes 𝑓: 0.00025 ( 1 hom. )

Failed GnomAD Quality Control

Consequence

GSTT2B
NM_001080843.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.05

Variant links:

Genes affected

GSTT2B (HGNC:33437): (glutathione S-transferase theta 2B) The protein encoded by this gene, glutathione S-transferase (GST) theta 2B (GSTT2B), is a member of a superfamily of proteins that catalyze the conjugation of reduced glutathione to a variety of electrophilic and hydrophobic compounds. Human GSTs can be divided into five main classes: alpha, mu, pi, theta, and zeta. The theta class includes GSTT1, GSTT2, and GSTT2B. GSTT2 and GSTT2B are nearly identical to each other, and share 55% amino acid identity with GSTT1. All three genes may play a role in human carcinogenesis. The GSTT2B gene is a pseudogene in some populations. [provided by RefSeq, Sep 2015]

GSTT2B 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=0.03497815).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GSTT2B	NM_001080843.4 linkuse as main transcript	c.401G>A	p.Arg134His	missense_variant	4/5	ENST00000290765.9
GSTT2B	NM_001363804.1 linkuse as main transcript	c.401G>A	p.Arg134His	missense_variant	4/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GSTT2B	ENST00000290765.9 linkuse as main transcript	c.401G>A	p.Arg134His	missense_variant	4/5	1	NM_001080843.4	P1
GSTT2B	ENST00000404172.3 linkuse as main transcript	c.401G>A	p.Arg134His	missense_variant	4/5	1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

151716

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.000145

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:

0.000380

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000139

AC:

AN:

244704

Hom.:

AF XY:

0.000166

AC XY:

AN XY:

132290

show subpopulations

Gnomad AFR exome

AF:

0.0000627

Gnomad AMR exome

AF:

0.0000295

Gnomad ASJ exome

AF:

0.000100

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000684

Gnomad NFE exome

AF:

0.000145

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.000248

AC:

362

AN:

1459986

Hom.:

Cov.:

AF XY:

0.000229

AC XY:

166

AN XY:

726222

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000468

Gnomad4 NFE exome

AF:

0.000294

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.000119

AC:

AN:

151834

Hom.:

Cov.:

AF XY:

0.0000944

AC XY:

AN XY:

74168

show subpopulations

Gnomad4 AFR

AF:

0.000145

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000380

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000144

Hom.:

Bravo

AF:

0.0000756

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000906

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

Sep 26, 2023

The c.401G>A (p.R134H) alteration is located in exon 4 (coding exon 4) of the GSTT2B gene. This alteration results from a G to A substitution at nucleotide position 401, causing the arginine (R) at amino acid position 134 to be replaced by a histidine (H). 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

0.13

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.65

CADD

Benign

8.1

DANN

Uncertain

1.0

DEOGEN2

Benign

0.011

T;T

Eigen

Benign

-0.63

Eigen_PC

Benign

-0.78

FATHMM_MKL

Benign

0.0093

LIST_S2

Benign

0.79

T;T

M_CAP

Benign

0.0026

MetaRNN

Benign

0.035

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Uncertain

2.4

M;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.38

PROVEAN

Benign

-1.3

N;N

REVEL

Benign

0.042

Sift

Benign

0.17

T;T

Sift4G

Benign

0.12

T;T

Polyphen

0.60

P;P

Vest4

0.15

MVP

0.13

MPC

2.4

ClinPred

0.22

GERP RS

-0.13

Varity_R

0.10

gMVP

0.40

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