2-197705429-C-G

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_138395.4(MARS2):c.24C>G(p.Arg8Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00142 in 1,611,374 control chromosomes in the GnomAD database, including 27 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Synonymous variant affecting the same amino acid position (i.e. R8R) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0068 ( 17 hom., cov: 33)

Exomes 𝑓: 0.00086 ( 10 hom. )

Consequence

MARS2
NM_138395.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 1.52

Variant links:

Genes affected

MARS2 (HGNC:25133): (methionyl-tRNA synthetase 2, mitochondrial) This gene produces a mitochondrial methionyl-tRNA synthetase protein that is encoded by the nuclear genome and imported to the mitochondrion. This protein likely functions as a monomer and is predicted to localize to the mitochondrial matrix. Mutations in this gene are associated with the autosomal recessive neurodegenerative disease spastic ataxia-3 (SPAX3). [provided by RefSeq, Apr 2014]

MARS2 links:

ENSG00000222017 (HGNC:):

ENSG00000222017 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.7).

BP6

Variant 2-197705429-C-G is Benign according to our data. Variant chr2-197705429-C-G is described in ClinVar as [Benign]. Clinvar id is 138170.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=1.52 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00679 (1035/152362) while in subpopulation AFR AF= 0.0234 (972/41590). AF 95% confidence interval is 0.0222. There are 17 homozygotes in gnomad4. There are 482 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 17 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MARS2	NM_138395.4 link	c.24C>G	p.Arg8Arg	synonymous_variant	Exon 1 of 1	ENST00000282276.8	NP_612404.1	Q96GW9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MARS2	ENST00000282276.8 link	c.24C>G	p.Arg8Arg	synonymous_variant	Exon 1 of 1	6	NM_138395.4	ENSP00000282276.6		Q96GW9
ENSG00000222017	ENST00000409845.1 link	n.166+6565C>G		intron_variant	Intron 2 of 3	1

Frequencies

GnomAD3 genomes

AF:

0.00673

AC:

1025

AN:

152244

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0232

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00275

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:

0.000132

Gnomad OTH

AF:

0.00574

GnomAD3 exomes

AF:

0.00194

AC:

476

AN:

245374

Hom.:

AF XY:

0.00150

AC XY:

201

AN XY:

133850

show subpopulations

Gnomad AFR exome

AF:

0.0232

Gnomad AMR exome

AF:

0.00212

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000274

Gnomad OTH exome

AF:

0.00232

GnomAD4 exome

AF:

0.000855

AC:

1248

AN:

1459012

Hom.:

Cov.:

AF XY:

0.000722

AC XY:

524

AN XY:

725794

show subpopulations

Gnomad4 AFR exome

AF:

0.0235

Gnomad4 AMR exome

AF:

0.00242

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000214

Gnomad4 OTH exome

AF:

0.00182

GnomAD4 genome

AF:

0.00679

AC:

1035

AN:

152362

Hom.:

Cov.:

AF XY:

0.00647

AC XY:

482

AN XY:

74520

show subpopulations

Gnomad4 AFR

AF:

0.0234

Gnomad4 AMR

AF:

0.00274

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000132

Gnomad4 OTH

AF:

0.00568

Alfa

AF:

0.00187

Hom.:

Bravo

AF:

0.00754

Asia WGS

AF:

0.00289

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.000296

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Jan 15, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

not specified

Benign:1

Jan 25, 2014

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.70

CADD

Benign

7.1

DANN

Benign

0.60

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.0

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