Variant chr20-23985887-G-A 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_178311.3(GGTLC1):c.392C>T(p.Thr131Met) variant causes a missense change. The variant allele was found at a frequency of 0.000127 in 1,611,926 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

GGTLC1
NM_178311.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.79

Variant links:

Genes affected

GGTLC1 (HGNC:16437): (gamma-glutamyltransferase light chain 1) This gene encodes a member of the gamma-glutamyl transpeptidase (GGT) family, which are important in the metabolism of glutathione. The most ubiquitously expressed human GGT gene, GGT1, encodes a single transmembrane polypeptide that is post-translationally processed to form a heavy and a light chain. In contrast, the product of this gene only contains homology to the light chain region, and lacks a transmembrane domain. Multiple alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Oct 2008]

GGTLC1 links:

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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=0.06325391).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GGTLC1	NM_178311.3 linkuse as main transcript	c.392C>T	p.Thr131Met	missense_variant	4/6	ENST00000335694.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
GGTLC1	ENST00000335694.4 linkuse as main transcript	c.392C>T	p.Thr131Met	missense_variant	4/6	1	NM_178311.3	P1
GGTLC1	ENST00000278765.8 linkuse as main transcript	c.392C>T	p.Thr131Met	missense_variant	4/6	1		P1
GGTLC1	ENST00000286890.8 linkuse as main transcript	c.392C>T	p.Thr131Met	missense_variant	3/5	1		P1

Frequencies

GnomAD3 genomes

AF:

0.000131

AC:

AN:

152216

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:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000215

AC:

AN:

251110

Hom.:

AF XY:

0.000251

AC XY:

AN XY:

135718

show subpopulations

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 SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00125

Gnomad NFE exome

AF:

0.000229

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000127

AC:

185

AN:

1459710

Hom.:

Cov.:

AF XY:

0.000117

AC XY:

AN XY:

726162

show subpopulations

Gnomad4 AFR exome

AF:

0.0000599

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000104

Gnomad4 FIN exome

AF:

0.00103

Gnomad4 NFE exome

AF:

0.000104

Gnomad4 OTH exome

AF:

0.0000498

GnomAD4 genome

AF:

0.000131

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.000215

AC XY:

AN XY:

74350

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.000941

Gnomad4 NFE

AF:

0.000132

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000126

Hom.:

Bravo

AF:

0.0000982

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000185

AC:

ExAC

AF:

0.000198

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.000119

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

Aug 17, 2022

The c.392C>T (p.T131M) alteration is located in exon 4 (coding exon 3) of the GGTLC1 gene. This alteration results from a C to T substitution at nucleotide position 392, causing the threonine (T) at amino acid position 131 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

0.23

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.50

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.022

T;T;T

Eigen

Benign

-0.20

Eigen_PC

Benign

-0.41

FATHMM_MKL

Benign

0.59

M_CAP

Benign

0.0012

MetaRNN

Benign

0.063

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.5

M;M;M

MutationTaster

Benign

0.99

N;N;N

PrimateAI

Uncertain

0.60

PROVEAN

Pathogenic

-5.2

D;D;D

REVEL

Benign

0.12

Sift

Uncertain

0.0010

D;D;D

Sift4G

Pathogenic

0.0010

D;D;D

Polyphen

0.85

P;P;P

Vest4

0.42

MVP

0.072

MPC

0.62

ClinPred

0.61

GERP RS

0.84

Varity_R

0.42

gMVP

0.80

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