Genetic Variant GPT:p.Ala87Val (chr8-144504778-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_005309.3(GPT):c.260C>T(p.Ala87Val) variant causes a missense change. The variant allele was found at a frequency of 0.00055 in 1,613,388 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 0.00059 ( 0 hom., cov: 34)

Exomes 𝑓: 0.00055 ( 0 hom. )

Consequence

GPT
NM_005309.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.09

Variant links:

Genes affected

GPT (HGNC:4552): (glutamic--pyruvic transaminase) This gene encodes cytosolic alanine aminotransaminase 1 (ALT1); also known as glutamate-pyruvate transaminase 1. This enzyme catalyzes the reversible transamination between alanine and 2-oxoglutarate to generate pyruvate and glutamate and, therefore, plays a key role in the intermediary metabolism of glucose and amino acids. Serum activity levels of this enzyme are routinely used as a biomarker of liver injury caused by drug toxicity, infection, alcohol, and steatosis. A related gene on chromosome 16 encodes a putative mitochondrial alanine aminotransaminase.[provided by RefSeq, Nov 2009]

GPT links:

ENSG00000255182 (HGNC:):

ENSG00000255182 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.20176905).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GPT	NM_005309.3 link	c.260C>T	p.Ala87Val	missense_variant	Exon 3 of 11	ENST00000394955.3	NP_005300.1	P24298

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GPT	ENST00000394955.3 link	c.260C>T	p.Ala87Val	missense_variant	Exon 3 of 11	1	NM_005309.3	ENSP00000378408.2		P24298

Frequencies

GnomAD3 genomes

AF:

0.000591

AC:

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00113

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00107

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.000593

AC:

149

AN:

251334

Hom.:

AF XY:

0.000655

AC XY:

AN XY:

135860

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00120

Gnomad NFE exome

AF:

0.00101

Gnomad OTH exome

AF:

0.000652

GnomAD4 exome

AF:

0.000546

AC:

798

AN:

1461208

Hom.:

Cov.:

AF XY:

0.000601

AC XY:

437

AN XY:

726914

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.000112

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.000101

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00113

Gnomad4 NFE exome

AF:

0.000631

Gnomad4 OTH exome

AF:

0.000381

GnomAD4 genome

AF:

0.000591

AC:

AN:

152180

Hom.:

Cov.:

AF XY:

0.000552

AC XY:

AN XY:

74342

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00113

Gnomad4 NFE

AF:

0.00107

Gnomad4 OTH

AF:

0.00191

Alfa

AF:

0.000989

Hom.:

Bravo

AF:

0.000400

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000725

AC:

EpiCase

AF:

0.000600

EpiControl

AF:

0.000415

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 24, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.260C>T (p.A87V) alteration is located in exon 3 (coding exon 3) of the GPT gene. This alteration results from a C to T substitution at nucleotide position 260, causing the alanine (A) at amino acid position 87 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

AlphaMissense

Uncertain

0.34

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.18

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.76

D;D

Eigen

Uncertain

0.62

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Uncertain

0.90

LIST_S2

Pathogenic

0.98

.;D

M_CAP

Benign

0.064

MetaRNN

Benign

0.20

T;T

MetaSVM

Uncertain

-0.036

MutationAssessor

Pathogenic

3.4

M;M

PrimateAI

Benign

0.48

PROVEAN

Uncertain

-3.3

D;D

REVEL

Uncertain

0.32

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.0040

D;D

Polyphen

0.96

P;P

Vest4

0.42

MVP

0.84

MPC

0.11

ClinPred

0.18

GERP RS

5.4

Varity_R

0.63

gMVP

0.92

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