Variant 2-176328878-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_006554.5(MTX2):c.383A>G(p.Tyr128Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000206 in 1,455,734 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

MTX2
NM_006554.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.80

Variant links:

Genes affected

MTX2 (HGNC:7506): (metaxin 2) The protein encoded by this gene is highly similar to the metaxin 2 protein from mouse, which has been shown to interact with the mitochondrial membrane protein metaxin 1. Because of this similarity, it is thought that the encoded protein is peripherally associated with the cytosolic face of the outer mitochondrial membrane, and that it is involved in the import of proteins into the mitochondrion. Alternative splicing results in multiple transcript variants. A related pseudogene has been identified on chromosome 7. [provided by RefSeq, Jun 2009]

MTX2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.909

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MTX2	NM_006554.5 linkuse as main transcript	c.383A>G	p.Tyr128Cys	missense_variant	7/10	ENST00000249442.11	NP_006545.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MTX2	ENST00000249442.11 linkuse as main transcript	c.383A>G	p.Tyr128Cys	missense_variant	7/10	1	NM_006554.5	ENSP00000249442	P1	O75431-1
MTX2	ENST00000420864.5 linkuse as main transcript	c.*473A>G		3_prime_UTR_variant, NMD_transcript_variant	8/11	1		ENSP00000403545
MTX2	ENST00000452865.1 linkuse as main transcript	c.383A>G	p.Tyr128Cys	missense_variant	7/10	3		ENSP00000398757
MTX2	ENST00000443241.5 linkuse as main transcript	c.215A>G	p.Tyr72Cys	missense_variant	4/7	3		ENSP00000414176

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

249200

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

134756

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000164

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000206

AC:

AN:

1455734

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

724248

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000506

Gnomad4 SAS exome

AF:

0.0000117

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000165

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

Aug 22, 2023

The c.383A>G (p.Y128C) alteration is located in exon 7 (coding exon 7) of the MTX2 gene. This alteration results from a A to G substitution at nucleotide position 383, causing the tyrosine (Y) at amino acid position 128 to be replaced by a cysteine (C). 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

Pathogenic

0.67

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Pathogenic

0.15

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

T;T;.

Eigen

Pathogenic

0.80

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.99

D;D;D

M_CAP

Benign

0.034

MetaRNN

Pathogenic

0.91

D;D;D

MetaSVM

Benign

-0.43

MutationAssessor

Pathogenic

3.2

M;.;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Pathogenic

0.80

PROVEAN

Pathogenic

-8.5

D;D;D

REVEL

Uncertain

0.53

Sift

Uncertain

0.0010

D;D;D

Sift4G

Uncertain

0.0030

D;D;D

Polyphen

1.0

D;.;.

Vest4

0.91

MutPred

0.77

Loss of catalytic residue at L123 (P = 0.1424);.;Loss of catalytic residue at L123 (P = 0.1424);

MVP

0.65

MPC

0.76

ClinPred

0.99

GERP RS

5.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.84

gMVP

0.86

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