Genetic Variant MTX2:p.Met115Ile (chr2-176328352-G-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BS1_Supporting

The NM_006554.5(MTX2):c.345G>A(p.Met115Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000063 in 1,587,854 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000063 ( 0 hom. )

Consequence

MTX2
NM_006554.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 10.0

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BS1

Variant frequency is greater than expected in population eas. gnomad4_exome allele frequency = 0.00000626 (9/1436924) while in subpopulation EAS AF= 0.00013 (5/38604). AF 95% confidence interval is 0.0000502. There are 0 homozygotes in gnomad4_exome. There are 5 alleles in male gnomad4_exome subpopulation. Median coverage is 29. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MTX2	NM_006554.5 link	c.345G>A	p.Met115Ile	missense_variant	Exon 6 of 10	ENST00000249442.11	NP_006545.1	O75431-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MTX2	ENST00000249442.11 link	c.345G>A	p.Met115Ile	missense_variant	Exon 6 of 10	1	NM_006554.5	ENSP00000249442.6		O75431-1

Frequencies

GnomAD3 genomes

AF:

0.00000663

AC:

AN:

150930

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000149

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000252

AC:

AN:

237984

Hom.:

AF XY:

0.0000232

AC XY:

AN XY:

129420

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000174

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000274

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000626

AC:

AN:

1436924

Hom.:

Cov.:

AF XY:

0.00000699

AC XY:

AN XY:

714948

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000130

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000273

Gnomad4 OTH exome

AF:

0.0000169

GnomAD4 genome

AF:

0.00000663

AC:

AN:

150930

Hom.:

Cov.:

AF XY:

0.0000136

AC XY:

AN XY:

73682

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:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000149

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 20, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.345G>A (p.M115I) alteration is located in exon 6 (coding exon 6) of the MTX2 gene. This alteration results from a G to A substitution at nucleotide position 345, causing the methionine (M) at amino acid position 115 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

Pathogenic

0.74

BayesDel_addAF

Uncertain

0.077

BayesDel_noAF

Pathogenic

0.15

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.068

T;T;.

Eigen

Uncertain

0.31

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.95

D;D;D

M_CAP

Benign

0.019

MetaRNN

Uncertain

0.43

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

L;.;.

PrimateAI

Pathogenic

0.86

PROVEAN

Benign

-2.3

N;N;N

REVEL

Uncertain

0.36

Sift

Uncertain

0.023

D;D;D

Sift4G

Benign

0.13

T;T;T

Polyphen

0.041

B;.;.

Vest4

0.87

MutPred

0.59

Loss of ubiquitination at K112 (P = 0.0487);.;Loss of ubiquitination at K112 (P = 0.0487);

MVP

0.26

MPC

0.21

ClinPred

0.29

GERP RS

5.9

Varity_R

0.36

gMVP

0.70

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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