Variant chr22-37024552-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_021126.8(MPST):c.397G>A(p.Val133Ile) variant causes a missense change. The variant allele was found at a frequency of 0.000000701 in 1,426,312 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

MPST
NM_021126.8 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.50

Variant links:

Genes affected

MPST (HGNC:7223): (mercaptopyruvate sulfurtransferase) This protein encoded by this gene catalyzes the transfer of a sulfur ion from 3-mercaptopyruvate to cyanide or other thiol compounds. It may be involved in cysteine degradation and cyanide detoxification. There is confusion in literature between this protein (mercaptopyruvate sulfurtransferase, MPST), which appears to be cytoplasmic, and thiosulfate sulfurtransferase (rhodanese, TST, GeneID:7263), which is a mitochondrial protein. Deficiency in MPST activity has been implicated in a rare inheritable disorder known as mercaptolactate-cysteine disulfiduria (MCDU). Alternatively spliced transcript variants encoding same or different isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

MPST links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MPST	NM_021126.8 linkuse as main transcript	c.397G>A	p.Val133Ile	missense_variant	2/3	ENST00000429360.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MPST	ENST00000429360.6 linkuse as main transcript	c.397G>A	p.Val133Ile	missense_variant	2/3	1	NM_021126.8		P25325-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.01e-7

AC:

AN:

1426312

Hom.:

Cov.:

AF XY:

0.00000141

AC XY:

AN XY:

708300

show subpopulations

Gnomad4 AFR exome

AF:

0.0000305

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

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

May 17, 2023

The c.397G>A (p.V133I) alteration is located in exon 2 (coding exon 2) of the MPST gene. This alteration results from a G to A substitution at nucleotide position 397, causing the valine (V) at amino acid position 133 to be replaced by an isoleucine (I). 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

0.20

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.39

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.022

T;T;T;.;.;T;.

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.57

FATHMM_MKL

Uncertain

0.95

M_CAP

Benign

0.012

MetaRNN

Uncertain

0.53

D;D;D;D;D;D;D

MetaSVM

Benign

-0.46

MutationAssessor

Uncertain

2.5

M;M;M;.;.;M;.

MutationTaster

Benign

1.0

D;D;D;D;D;D;D

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.0

N;N;N;.;N;N;.

REVEL

Benign

0.26

Sift

Uncertain

0.0070

D;D;D;.;D;D;.

Sift4G

Uncertain

0.015

D;D;D;D;D;D;D

Polyphen

0.97

D;D;D;.;D;D;D

Vest4

0.38

MutPred

0.66

Loss of MoRF binding (P = 0.1194);Loss of MoRF binding (P = 0.1194);Loss of MoRF binding (P = 0.1194);.;Loss of MoRF binding (P = 0.1194);Loss of MoRF binding (P = 0.1194);Loss of MoRF binding (P = 0.1194);

MVP

0.47

ClinPred

0.86

GERP RS

3.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.44

gMVP

0.68

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