3-49357605-G-A

Variant names:

Variant summary

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

The NM_000581.4(GPX1):c.395C>T(p.Ala132Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000221 in 1,613,118 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00023 ( 0 hom. )

Consequence

GPX1
NM_000581.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 3.53

Variant links:

Genes affected

GPX1 (HGNC:4553): (glutathione peroxidase 1) The protein encoded by this gene belongs to the glutathione peroxidase family, members of which catalyze the reduction of organic hydroperoxides and hydrogen peroxide (H2O2) by glutathione, and thereby protect cells against oxidative damage. Other studies indicate that H2O2 is also essential for growth-factor mediated signal transduction, mitochondrial function, and maintenance of thiol redox-balance; therefore, by limiting H2O2 accumulation, glutathione peroxidases are also involved in modulating these processes. Several isozymes of this gene family exist in vertebrates, which vary in cellular location and substrate specificity. This isozyme is the most abundant, is ubiquitously expressed and localized in the cytoplasm, and whose preferred substrate is hydrogen peroxide. It is also a selenoprotein, containing the rare amino acid selenocysteine (Sec) at its active site. Sec is encoded by the UGA codon, which normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, designated the Sec insertion sequence (SECIS) element, that is necessary for the recognition of UGA as a Sec codon, rather than as a stop signal. This gene contains an in-frame GCG trinucleotide repeat in the coding region, and three alleles with 4, 5 or 6 repeats have been found in the human population. The allele with 4 GCG repeats has been significantly associated with breast cancer risk in premenopausal women. Alternatively spliced transcript variants have been found for this gene. Pseudogenes of this locus have been identified on chromosomes X and 21. [provided by RefSeq, Aug 2017]

GPX1 links:

ENSG00000290318 (HGNC:):

ENSG00000290318 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=0.082586974).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GPX1	NM_000581.4 link	c.395C>T	p.Ala132Val	missense_variant	Exon 2 of 2	ENST00000419783.3	NP_000572.2	P07203-1Q7L4Q3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GPX1	ENST00000419783.3 link	c.395C>T	p.Ala132Val	missense_variant	Exon 2 of 2	1	NM_000581.4	ENSP00000407375.1		P07203-1
ENSG00000290318	ENST00000704381 link	c.*115C>T		3_prime_UTR_variant	Exon 6 of 6			ENSP00000515884.1		A0A994J514

Frequencies

GnomAD3 genomes

AF:

0.000184

AC:

AN:

152156

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000459

Gnomad ASJ

AF:

0.00173

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000191

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000136

AC:

AN:

249118

Hom.:

AF XY:

0.000140

AC XY:

AN XY:

135284

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.000497

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000928

Gnomad NFE exome

AF:

0.000204

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000225

AC:

329

AN:

1460962

Hom.:

Cov.:

AF XY:

0.000198

AC XY:

144

AN XY:

726814

show subpopulations

Gnomad4 AFR exome

AF:

0.0000897

Gnomad4 AMR exome

AF:

0.0000895

Gnomad4 ASJ exome

AF:

0.000344

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000938

Gnomad4 NFE exome

AF:

0.000265

Gnomad4 OTH exome

AF:

0.000199

GnomAD4 genome

AF:

0.000184

AC:

AN:

152156

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74328

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000459

Gnomad4 ASJ

AF:

0.00173

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.000191

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000237

Hom.:

Bravo

AF:

0.000136

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000239

AC:

ExAC

AF:

0.000116

AC:

EpiCase

AF:

0.000491

EpiControl

AF:

0.000415

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 16, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.395C>T (p.A132V) alteration is located in exon 2 (coding exon 2) of the GPX1 gene. This alteration results from a C to T substitution at nucleotide position 395, causing the alanine (A) at amino acid position 132 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Gluthathione peroxidase deficiency

Uncertain:1

Nov 13, 2023

Revvity Omics, Revvity

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.65

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.12

T;.;.

Eigen

Benign

-0.087

Eigen_PC

Benign

0.036

FATHMM_MKL

Uncertain

0.80

LIST_S2

Benign

0.76

T;T;T

MetaRNN

Benign

0.083

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.8

L;.;.

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.7

N;.;.

REVEL

Benign

0.056

Sift

Benign

0.18

T;.;.

Sift4G

Benign

0.069

T;T;.

Polyphen

0.0010

B;.;.

Vest4

0.091

MVP

0.57

MPC

0.64

ClinPred

0.12

GERP RS

4.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.062

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